aboutsummaryrefslogtreecommitdiff
path: root/hw
diff options
context:
space:
mode:
authorPeter Maydell <peter.maydell@linaro.org>2020-10-29 11:40:04 +0000
committerPeter Maydell <peter.maydell@linaro.org>2020-10-29 11:40:04 +0000
commit802427bcdae1ad2eceea8a8877ecad835e3f8fde (patch)
tree3b27c2bb1642d355cb762e9a597f83cb17d299aa /hw
parentc0444009147aa935d52d5acfc6b70094bb42b0dd (diff)
parent32bd322a0134ed89db00f2b9b3894982db3dedcb (diff)
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20201027-1' into staging
target-arm queue: * raspi: add model of cprman clock manager * sbsa-ref: add an SBSA generic watchdog device * arm/trace: Fix hex printing * raspi: Add models of Pi 3 model A+, Pi Zero and Pi A+ * hw/arm/smmuv3: Set the restoration priority of the vSMMUv3 explicitly * Nuvoton NPCM7xx: Add USB, RNG, GPIO and watchdog support * hw/arm: fix min_cpus for xlnx-versal-virt platform * hw/arm/highbank: Silence warnings about missing fallthrough statements * linux-user: Support Aarch64 BTI * Armv7M systick: fix corner case bugs by rewriting to use ptimer # gpg: Signature made Tue 27 Oct 2020 11:27:10 GMT # gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE # gpg: issuer "peter.maydell@linaro.org" # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate] # Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE * remotes/pmaydell/tags/pull-target-arm-20201027-1: (48 commits) hw/timer/armv7m_systick: Rewrite to use ptimers hw/core/ptimer: Support ptimer being disabled by timer callback hw/arm/sbsa-ref: add SBSA watchdog device hw/watchdog: Implement SBSA watchdog device hw/arm/bcm2835_peripherals: connect the UART clock hw/char/pl011: add a clock input hw/misc/bcm2835_cprman: add sane reset values to the registers hw/misc/bcm2835_cprman: add the DSI0HSCK multiplexer hw/misc/bcm2835_cprman: implement clock mux behaviour hw/misc/bcm2835_cprman: add a clock mux skeleton implementation hw/misc/bcm2835_cprman: implement PLL channels behaviour hw/misc/bcm2835_cprman: add a PLL channel skeleton implementation hw/misc/bcm2835_cprman: implement PLLs behaviour hw/misc/bcm2835_cprman: add a PLL skeleton implementation hw/arm/raspi: add a skeleton implementation of the CPRMAN hw/arm/raspi: fix CPRMAN base address hw/core/clock: trace clock values in Hz instead of ns hw/core/clock: provide the VMSTATE_ARRAY_CLOCK macro arm/trace: Fix hex printing hw/arm/raspi: Add the Raspberry Pi 3 model A+ ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
-rw-r--r--hw/arm/Kconfig1
-rw-r--r--hw/arm/bcm2835_peripherals.c15
-rw-r--r--hw/arm/bcm2836.c184
-rw-r--r--hw/arm/highbank.c2
-rw-r--r--hw/arm/npcm7xx.c126
-rw-r--r--hw/arm/raspi.c41
-rw-r--r--hw/arm/sbsa-ref.c23
-rw-r--r--hw/arm/smmuv3.c1
-rw-r--r--hw/arm/trace-events2
-rw-r--r--hw/arm/xlnx-versal-virt.c1
-rw-r--r--hw/char/pl011.c45
-rw-r--r--hw/char/trace-events1
-rw-r--r--hw/core/clock.c6
-rw-r--r--hw/core/ptimer.c4
-rw-r--r--hw/core/trace-events4
-rw-r--r--hw/gpio/meson.build1
-rw-r--r--hw/gpio/npcm7xx_gpio.c424
-rw-r--r--hw/gpio/trace-events7
-rw-r--r--hw/misc/bcm2835_cprman.c808
-rw-r--r--hw/misc/meson.build2
-rw-r--r--hw/misc/npcm7xx_clk.c28
-rw-r--r--hw/misc/npcm7xx_rng.c180
-rw-r--r--hw/misc/trace-events9
-rw-r--r--hw/timer/armv7m_systick.c124
-rw-r--r--hw/timer/npcm7xx_timer.c270
-rw-r--r--hw/usb/hcd-ehci-sysbus.c19
-rw-r--r--hw/usb/hcd-ehci.h1
-rw-r--r--hw/watchdog/Kconfig3
-rw-r--r--hw/watchdog/meson.build1
-rw-r--r--hw/watchdog/sbsa_gwdt.c293
30 files changed, 2432 insertions, 194 deletions
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 3c893e07cd..fdf4464b94 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -212,6 +212,7 @@ config SBSA_REF
select PL031 # RTC
select PL061 # GPIO
select USB_EHCI_SYSBUS
+ select WDT_SBSA
config SABRELITE
bool
diff --git a/hw/arm/bcm2835_peripherals.c b/hw/arm/bcm2835_peripherals.c
index 48909a43c3..dcff13433e 100644
--- a/hw/arm/bcm2835_peripherals.c
+++ b/hw/arm/bcm2835_peripherals.c
@@ -121,6 +121,9 @@ static void bcm2835_peripherals_init(Object *obj)
/* DWC2 */
object_initialize_child(obj, "dwc2", &s->dwc2, TYPE_DWC2_USB);
+ /* CPRMAN clock manager */
+ object_initialize_child(obj, "cprman", &s->cprman, TYPE_BCM2835_CPRMAN);
+
object_property_add_const_link(OBJECT(&s->dwc2), "dma-mr",
OBJECT(&s->gpu_bus_mr));
}
@@ -160,6 +163,15 @@ static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
return;
}
+ /* CPRMAN clock manager */
+ if (!sysbus_realize(SYS_BUS_DEVICE(&s->cprman), errp)) {
+ return;
+ }
+ memory_region_add_subregion(&s->peri_mr, CPRMAN_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->cprman), 0));
+ qdev_connect_clock_in(DEVICE(&s->uart0), "clk",
+ qdev_get_clock_out(DEVICE(&s->cprman), "uart-out"));
+
memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
@@ -354,8 +366,7 @@ static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
create_unimp(s, &s->txp, "bcm2835-txp", TXP_OFFSET, 0x1000);
create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET, 0x40);
- create_unimp(s, &s->cprman, "bcm2835-cprman", CPRMAN_OFFSET, 0x1000);
- create_unimp(s, &s->a2w, "bcm2835-a2w", A2W_OFFSET, 0x1000);
+ create_unimp(s, &s->powermgt, "bcm2835-powermgt", PM_OFFSET, 0x114);
create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
create_unimp(s, &s->spi[0], "bcm2835-spi0", SPI0_OFFSET, 0x20);
diff --git a/hw/arm/bcm2836.c b/hw/arm/bcm2836.c
index f15cc3b405..de7ade2878 100644
--- a/hw/arm/bcm2836.c
+++ b/hw/arm/bcm2836.c
@@ -17,46 +17,45 @@
#include "hw/arm/raspi_platform.h"
#include "hw/sysbus.h"
-struct BCM283XInfo {
+typedef struct BCM283XClass {
+ /*< private >*/
+ DeviceClass parent_class;
+ /*< public >*/
const char *name;
const char *cpu_type;
+ unsigned core_count;
hwaddr peri_base; /* Peripheral base address seen by the CPU */
hwaddr ctrl_base; /* Interrupt controller and mailboxes etc. */
int clusterid;
-};
+} BCM283XClass;
-static const BCM283XInfo bcm283x_socs[] = {
- {
- .name = TYPE_BCM2836,
- .cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"),
- .peri_base = 0x3f000000,
- .ctrl_base = 0x40000000,
- .clusterid = 0xf,
- },
-#ifdef TARGET_AARCH64
- {
- .name = TYPE_BCM2837,
- .cpu_type = ARM_CPU_TYPE_NAME("cortex-a53"),
- .peri_base = 0x3f000000,
- .ctrl_base = 0x40000000,
- .clusterid = 0x0,
- },
-#endif
-};
+#define BCM283X_CLASS(klass) \
+ OBJECT_CLASS_CHECK(BCM283XClass, (klass), TYPE_BCM283X)
+#define BCM283X_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(BCM283XClass, (obj), TYPE_BCM283X)
+
+static Property bcm2836_enabled_cores_property =
+ DEFINE_PROP_UINT32("enabled-cpus", BCM283XState, enabled_cpus, 0);
static void bcm2836_init(Object *obj)
{
BCM283XState *s = BCM283X(obj);
BCM283XClass *bc = BCM283X_GET_CLASS(obj);
- const BCM283XInfo *info = bc->info;
int n;
- for (n = 0; n < BCM283X_NCPUS; n++) {
+ for (n = 0; n < bc->core_count; n++) {
object_initialize_child(obj, "cpu[*]", &s->cpu[n].core,
- info->cpu_type);
+ bc->cpu_type);
+ }
+ if (bc->core_count > 1) {
+ qdev_property_add_static(DEVICE(obj), &bcm2836_enabled_cores_property);
+ qdev_prop_set_uint32(DEVICE(obj), "enabled-cpus", bc->core_count);
}
- object_initialize_child(obj, "control", &s->control, TYPE_BCM2836_CONTROL);
+ if (bc->ctrl_base) {
+ object_initialize_child(obj, "control", &s->control,
+ TYPE_BCM2836_CONTROL);
+ }
object_initialize_child(obj, "peripherals", &s->peripherals,
TYPE_BCM2835_PERIPHERALS);
@@ -66,13 +65,11 @@ static void bcm2836_init(Object *obj)
"vcram-size");
}
-static void bcm2836_realize(DeviceState *dev, Error **errp)
+static bool bcm283x_common_realize(DeviceState *dev, Error **errp)
{
BCM283XState *s = BCM283X(dev);
BCM283XClass *bc = BCM283X_GET_CLASS(dev);
- const BCM283XInfo *info = bc->info;
Object *obj;
- int n;
/* common peripherals from bcm2835 */
@@ -81,21 +78,52 @@ static void bcm2836_realize(DeviceState *dev, Error **errp)
object_property_add_const_link(OBJECT(&s->peripherals), "ram", obj);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->peripherals), errp)) {
- return;
+ return false;
}
object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->peripherals),
"sd-bus");
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(&s->peripherals), 0,
- info->peri_base, 1);
+ bc->peri_base, 1);
+ return true;
+}
+
+static void bcm2835_realize(DeviceState *dev, Error **errp)
+{
+ BCM283XState *s = BCM283X(dev);
+
+ if (!bcm283x_common_realize(dev, errp)) {
+ return;
+ }
+
+ if (!qdev_realize(DEVICE(&s->cpu[0].core), NULL, errp)) {
+ return;
+ }
+
+ /* Connect irq/fiq outputs from the interrupt controller. */
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0,
+ qdev_get_gpio_in(DEVICE(&s->cpu[0].core), ARM_CPU_IRQ));
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 1,
+ qdev_get_gpio_in(DEVICE(&s->cpu[0].core), ARM_CPU_FIQ));
+}
+
+static void bcm2836_realize(DeviceState *dev, Error **errp)
+{
+ BCM283XState *s = BCM283X(dev);
+ BCM283XClass *bc = BCM283X_GET_CLASS(dev);
+ int n;
+
+ if (!bcm283x_common_realize(dev, errp)) {
+ return;
+ }
/* bcm2836 interrupt controller (and mailboxes, etc.) */
if (!sysbus_realize(SYS_BUS_DEVICE(&s->control), errp)) {
return;
}
- sysbus_mmio_map(SYS_BUS_DEVICE(&s->control), 0, info->ctrl_base);
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->control), 0, bc->ctrl_base);
sysbus_connect_irq(SYS_BUS_DEVICE(&s->peripherals), 0,
qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-irq", 0));
@@ -104,11 +132,11 @@ static void bcm2836_realize(DeviceState *dev, Error **errp)
for (n = 0; n < BCM283X_NCPUS; n++) {
/* TODO: this should be converted to a property of ARM_CPU */
- s->cpu[n].core.mp_affinity = (info->clusterid << 8) | n;
+ s->cpu[n].core.mp_affinity = (bc->clusterid << 8) | n;
/* set periphbase/CBAR value for CPU-local registers */
if (!object_property_set_int(OBJECT(&s->cpu[n].core), "reset-cbar",
- info->peri_base, errp)) {
+ bc->peri_base, errp)) {
return;
}
@@ -142,47 +170,77 @@ static void bcm2836_realize(DeviceState *dev, Error **errp)
}
}
-static Property bcm2836_props[] = {
- DEFINE_PROP_UINT32("enabled-cpus", BCM283XState, enabled_cpus,
- BCM283X_NCPUS),
- DEFINE_PROP_END_OF_LIST()
-};
-
static void bcm283x_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
- BCM283XClass *bc = BCM283X_CLASS(oc);
- bc->info = data;
- dc->realize = bcm2836_realize;
- device_class_set_props(dc, bcm2836_props);
/* Reason: Must be wired up in code (see raspi_init() function) */
dc->user_creatable = false;
}
-static const TypeInfo bcm283x_type_info = {
- .name = TYPE_BCM283X,
- .parent = TYPE_DEVICE,
- .instance_size = sizeof(BCM283XState),
- .instance_init = bcm2836_init,
- .class_size = sizeof(BCM283XClass),
- .abstract = true,
+static void bcm2835_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ BCM283XClass *bc = BCM283X_CLASS(oc);
+
+ bc->cpu_type = ARM_CPU_TYPE_NAME("arm1176");
+ bc->core_count = 1;
+ bc->peri_base = 0x20000000;
+ dc->realize = bcm2835_realize;
+};
+
+static void bcm2836_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ BCM283XClass *bc = BCM283X_CLASS(oc);
+
+ bc->cpu_type = ARM_CPU_TYPE_NAME("cortex-a7");
+ bc->core_count = BCM283X_NCPUS;
+ bc->peri_base = 0x3f000000;
+ bc->ctrl_base = 0x40000000;
+ bc->clusterid = 0xf;
+ dc->realize = bcm2836_realize;
};
-static void bcm2836_register_types(void)
+#ifdef TARGET_AARCH64
+static void bcm2837_class_init(ObjectClass *oc, void *data)
{
- int i;
-
- type_register_static(&bcm283x_type_info);
- for (i = 0; i < ARRAY_SIZE(bcm283x_socs); i++) {
- TypeInfo ti = {
- .name = bcm283x_socs[i].name,
- .parent = TYPE_BCM283X,
- .class_init = bcm283x_class_init,
- .class_data = (void *) &bcm283x_socs[i],
- };
- type_register(&ti);
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ BCM283XClass *bc = BCM283X_CLASS(oc);
+
+ bc->cpu_type = ARM_CPU_TYPE_NAME("cortex-a53");
+ bc->core_count = BCM283X_NCPUS;
+ bc->peri_base = 0x3f000000;
+ bc->ctrl_base = 0x40000000;
+ bc->clusterid = 0x0;
+ dc->realize = bcm2836_realize;
+};
+#endif
+
+static const TypeInfo bcm283x_types[] = {
+ {
+ .name = TYPE_BCM2835,
+ .parent = TYPE_BCM283X,
+ .class_init = bcm2835_class_init,
+ }, {
+ .name = TYPE_BCM2836,
+ .parent = TYPE_BCM283X,
+ .class_init = bcm2836_class_init,
+#ifdef TARGET_AARCH64
+ }, {
+ .name = TYPE_BCM2837,
+ .parent = TYPE_BCM283X,
+ .class_init = bcm2837_class_init,
+#endif
+ }, {
+ .name = TYPE_BCM283X,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(BCM283XState),
+ .instance_init = bcm2836_init,
+ .class_size = sizeof(BCM283XClass),
+ .class_init = bcm283x_class_init,
+ .abstract = true,
}
-}
+};
-type_init(bcm2836_register_types)
+DEFINE_TYPES(bcm283x_types)
diff --git a/hw/arm/highbank.c b/hw/arm/highbank.c
index da0510d7ce..f71087860d 100644
--- a/hw/arm/highbank.c
+++ b/hw/arm/highbank.c
@@ -92,10 +92,12 @@ static void hb_reset_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
address_space_stl_notdirty(&address_space_memory,
SMP_BOOT_REG + 0x30, 0,
MEMTXATTRS_UNSPECIFIED, NULL);
+ /* fallthrough */
case 3:
address_space_stl_notdirty(&address_space_memory,
SMP_BOOT_REG + 0x20, 0,
MEMTXATTRS_UNSPECIFIED, NULL);
+ /* fallthrough */
case 2:
address_space_stl_notdirty(&address_space_memory,
SMP_BOOT_REG + 0x10, 0,
diff --git a/hw/arm/npcm7xx.c b/hw/arm/npcm7xx.c
index 037f3a26f2..47e2b6fc40 100644
--- a/hw/arm/npcm7xx.c
+++ b/hw/arm/npcm7xx.c
@@ -44,6 +44,11 @@
#define NPCM7XX_GCR_BA (0xf0800000)
#define NPCM7XX_CLK_BA (0xf0801000)
#define NPCM7XX_MC_BA (0xf0824000)
+#define NPCM7XX_RNG_BA (0xf000b000)
+
+/* USB Host modules */
+#define NPCM7XX_EHCI_BA (0xf0806000)
+#define NPCM7XX_OHCI_BA (0xf0807000)
/* Internal AHB SRAM */
#define NPCM7XX_RAM3_BA (0xc0008000)
@@ -86,6 +91,19 @@ enum NPCM7xxInterrupt {
NPCM7XX_TIMER12_IRQ,
NPCM7XX_TIMER13_IRQ,
NPCM7XX_TIMER14_IRQ,
+ NPCM7XX_WDG0_IRQ = 47, /* Timer Module 0 Watchdog */
+ NPCM7XX_WDG1_IRQ, /* Timer Module 1 Watchdog */
+ NPCM7XX_WDG2_IRQ, /* Timer Module 2 Watchdog */
+ NPCM7XX_EHCI_IRQ = 61,
+ NPCM7XX_OHCI_IRQ = 62,
+ NPCM7XX_GPIO0_IRQ = 116,
+ NPCM7XX_GPIO1_IRQ,
+ NPCM7XX_GPIO2_IRQ,
+ NPCM7XX_GPIO3_IRQ,
+ NPCM7XX_GPIO4_IRQ,
+ NPCM7XX_GPIO5_IRQ,
+ NPCM7XX_GPIO6_IRQ,
+ NPCM7XX_GPIO7_IRQ,
};
/* Total number of GIC interrupts, including internal Cortex-A9 interrupts. */
@@ -121,6 +139,55 @@ static const hwaddr npcm7xx_fiu3_flash_addr[] = {
};
static const struct {
+ hwaddr regs_addr;
+ uint32_t unconnected_pins;
+ uint32_t reset_pu;
+ uint32_t reset_pd;
+ uint32_t reset_osrc;
+ uint32_t reset_odsc;
+} npcm7xx_gpio[] = {
+ {
+ .regs_addr = 0xf0010000,
+ .reset_pu = 0xff03ffff,
+ .reset_pd = 0x00fc0000,
+ }, {
+ .regs_addr = 0xf0011000,
+ .unconnected_pins = 0x0000001e,
+ .reset_pu = 0xfefffe07,
+ .reset_pd = 0x010001e0,
+ }, {
+ .regs_addr = 0xf0012000,
+ .reset_pu = 0x780fffff,
+ .reset_pd = 0x07f00000,
+ .reset_odsc = 0x00700000,
+ }, {
+ .regs_addr = 0xf0013000,
+ .reset_pu = 0x00fc0000,
+ .reset_pd = 0xff000000,
+ }, {
+ .regs_addr = 0xf0014000,
+ .reset_pu = 0xffffffff,
+ }, {
+ .regs_addr = 0xf0015000,
+ .reset_pu = 0xbf83f801,
+ .reset_pd = 0x007c0000,
+ .reset_osrc = 0x000000f1,
+ .reset_odsc = 0x3f9f80f1,
+ }, {
+ .regs_addr = 0xf0016000,
+ .reset_pu = 0xfc00f801,
+ .reset_pd = 0x000007fe,
+ .reset_odsc = 0x00000800,
+ }, {
+ .regs_addr = 0xf0017000,
+ .unconnected_pins = 0xffffff00,
+ .reset_pu = 0x0000007f,
+ .reset_osrc = 0x0000007f,
+ .reset_odsc = 0x0000007f,
+ },
+};
+
+static const struct {
const char *name;
hwaddr regs_addr;
int cs_count;
@@ -253,11 +320,19 @@ static void npcm7xx_init(Object *obj)
object_initialize_child(obj, "otp2", &s->fuse_array,
TYPE_NPCM7XX_FUSE_ARRAY);
object_initialize_child(obj, "mc", &s->mc, TYPE_NPCM7XX_MC);
+ object_initialize_child(obj, "rng", &s->rng, TYPE_NPCM7XX_RNG);
for (i = 0; i < ARRAY_SIZE(s->tim); i++) {
object_initialize_child(obj, "tim[*]", &s->tim[i], TYPE_NPCM7XX_TIMER);
}
+ for (i = 0; i < ARRAY_SIZE(s->gpio); i++) {
+ object_initialize_child(obj, "gpio[*]", &s->gpio[i], TYPE_NPCM7XX_GPIO);
+ }
+
+ object_initialize_child(obj, "ehci", &s->ehci, TYPE_NPCM7XX_EHCI);
+ object_initialize_child(obj, "ohci", &s->ohci, TYPE_SYSBUS_OHCI);
+
QEMU_BUILD_BUG_ON(ARRAY_SIZE(npcm7xx_fiu) != ARRAY_SIZE(s->fiu));
for (i = 0; i < ARRAY_SIZE(s->fiu); i++) {
object_initialize_child(obj, npcm7xx_fiu[i].name, &s->fiu[i],
@@ -353,6 +428,15 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp)
qemu_irq irq = npcm7xx_irq(s, first_irq + j);
sysbus_connect_irq(sbd, j, irq);
}
+
+ /* IRQ for watchdogs */
+ sysbus_connect_irq(sbd, NPCM7XX_TIMERS_PER_CTRL,
+ npcm7xx_irq(s, NPCM7XX_WDG0_IRQ + i));
+ /* GPIO that connects clk module with watchdog */
+ qdev_connect_gpio_out_named(DEVICE(&s->tim[i]),
+ NPCM7XX_WATCHDOG_RESET_GPIO_OUT, 0,
+ qdev_get_gpio_in_named(DEVICE(&s->clk),
+ NPCM7XX_WATCHDOG_RESET_GPIO_IN, i));
}
/* UART0..3 (16550 compatible) */
@@ -362,6 +446,45 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp)
serial_hd(i), DEVICE_LITTLE_ENDIAN);
}
+ /* Random Number Generator. Cannot fail. */
+ sysbus_realize(SYS_BUS_DEVICE(&s->rng), &error_abort);
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->rng), 0, NPCM7XX_RNG_BA);
+
+ /* GPIO modules. Cannot fail. */
+ QEMU_BUILD_BUG_ON(ARRAY_SIZE(npcm7xx_gpio) != ARRAY_SIZE(s->gpio));
+ for (i = 0; i < ARRAY_SIZE(s->gpio); i++) {
+ Object *obj = OBJECT(&s->gpio[i]);
+
+ object_property_set_uint(obj, "reset-pullup",
+ npcm7xx_gpio[i].reset_pu, &error_abort);
+ object_property_set_uint(obj, "reset-pulldown",
+ npcm7xx_gpio[i].reset_pd, &error_abort);
+ object_property_set_uint(obj, "reset-osrc",
+ npcm7xx_gpio[i].reset_osrc, &error_abort);
+ object_property_set_uint(obj, "reset-odsc",
+ npcm7xx_gpio[i].reset_odsc, &error_abort);
+ sysbus_realize(SYS_BUS_DEVICE(obj), &error_abort);
+ sysbus_mmio_map(SYS_BUS_DEVICE(obj), 0, npcm7xx_gpio[i].regs_addr);
+ sysbus_connect_irq(SYS_BUS_DEVICE(obj), 0,
+ npcm7xx_irq(s, NPCM7XX_GPIO0_IRQ + i));
+ }
+
+ /* USB Host */
+ object_property_set_bool(OBJECT(&s->ehci), "companion-enable", true,
+ &error_abort);
+ sysbus_realize(SYS_BUS_DEVICE(&s->ehci), &error_abort);
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->ehci), 0, NPCM7XX_EHCI_BA);
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->ehci), 0,
+ npcm7xx_irq(s, NPCM7XX_EHCI_IRQ));
+
+ object_property_set_str(OBJECT(&s->ohci), "masterbus", "usb-bus.0",
+ &error_abort);
+ object_property_set_uint(OBJECT(&s->ohci), "num-ports", 1, &error_abort);
+ sysbus_realize(SYS_BUS_DEVICE(&s->ohci), &error_abort);
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->ohci), 0, NPCM7XX_OHCI_BA);
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->ohci), 0,
+ npcm7xx_irq(s, NPCM7XX_OHCI_IRQ));
+
/*
* Flash Interface Unit (FIU). Can fail if incorrect number of chip selects
* specified, but this is a programming error.
@@ -400,7 +523,6 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp)
create_unimplemented_device("npcm7xx.vdmx", 0xe0800000, 4 * KiB);
create_unimplemented_device("npcm7xx.pcierc", 0xe1000000, 64 * KiB);
create_unimplemented_device("npcm7xx.kcs", 0xf0007000, 4 * KiB);
- create_unimplemented_device("npcm7xx.rng", 0xf000b000, 4 * KiB);
create_unimplemented_device("npcm7xx.adc", 0xf000c000, 4 * KiB);
create_unimplemented_device("npcm7xx.gfxi", 0xf000e000, 4 * KiB);
create_unimplemented_device("npcm7xx.gpio[0]", 0xf0010000, 4 * KiB);
@@ -447,8 +569,6 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp)
create_unimplemented_device("npcm7xx.mcphy", 0xf05f0000, 64 * KiB);
create_unimplemented_device("npcm7xx.gmac1", 0xf0802000, 8 * KiB);
create_unimplemented_device("npcm7xx.gmac2", 0xf0804000, 8 * KiB);
- create_unimplemented_device("npcm7xx.ehci", 0xf0806000, 4 * KiB);
- create_unimplemented_device("npcm7xx.ohci", 0xf0807000, 4 * KiB);
create_unimplemented_device("npcm7xx.vcd", 0xf0810000, 64 * KiB);
create_unimplemented_device("npcm7xx.ece", 0xf0820000, 8 * KiB);
create_unimplemented_device("npcm7xx.vdma", 0xf0822000, 8 * KiB);
diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index b5b30f0f38..990509d385 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -70,6 +70,7 @@ FIELD(REV_CODE, MEMORY_SIZE, 20, 3);
FIELD(REV_CODE, STYLE, 23, 1);
typedef enum RaspiProcessorId {
+ PROCESSOR_ID_BCM2835 = 0,
PROCESSOR_ID_BCM2836 = 1,
PROCESSOR_ID_BCM2837 = 2,
} RaspiProcessorId;
@@ -78,6 +79,7 @@ static const struct {
const char *type;
int cores_count;
} soc_property[] = {
+ [PROCESSOR_ID_BCM2835] = {TYPE_BCM2835, 1},
[PROCESSOR_ID_BCM2836] = {TYPE_BCM2836, BCM283X_NCPUS},
[PROCESSOR_ID_BCM2837] = {TYPE_BCM2837, BCM283X_NCPUS},
};
@@ -317,6 +319,24 @@ static void raspi_machine_class_common_init(MachineClass *mc,
mc->default_ram_id = "ram";
};
+static void raspi0_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ RaspiMachineClass *rmc = RASPI_MACHINE_CLASS(oc);
+
+ rmc->board_rev = 0x920092; /* Revision 1.2 */
+ raspi_machine_class_common_init(mc, rmc->board_rev);
+};
+
+static void raspi1ap_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ RaspiMachineClass *rmc = RASPI_MACHINE_CLASS(oc);
+
+ rmc->board_rev = 0x900021; /* Revision 1.1 */
+ raspi_machine_class_common_init(mc, rmc->board_rev);
+};
+
static void raspi2b_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
@@ -328,6 +348,15 @@ static void raspi2b_machine_class_init(ObjectClass *oc, void *data)
};
#ifdef TARGET_AARCH64
+static void raspi3ap_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ RaspiMachineClass *rmc = RASPI_MACHINE_CLASS(oc);
+
+ rmc->board_rev = 0x9020e0; /* Revision 1.0 */
+ raspi_machine_class_common_init(mc, rmc->board_rev);
+};
+
static void raspi3b_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
@@ -341,11 +370,23 @@ static void raspi3b_machine_class_init(ObjectClass *oc, void *data)
static const TypeInfo raspi_machine_types[] = {
{
+ .name = MACHINE_TYPE_NAME("raspi0"),
+ .parent = TYPE_RASPI_MACHINE,
+ .class_init = raspi0_machine_class_init,
+ }, {
+ .name = MACHINE_TYPE_NAME("raspi1ap"),
+ .parent = TYPE_RASPI_MACHINE,
+ .class_init = raspi1ap_machine_class_init,
+ }, {
.name = MACHINE_TYPE_NAME("raspi2b"),
.parent = TYPE_RASPI_MACHINE,
.class_init = raspi2b_machine_class_init,
#ifdef TARGET_AARCH64
}, {
+ .name = MACHINE_TYPE_NAME("raspi3ap"),
+ .parent = TYPE_RASPI_MACHINE,
+ .class_init = raspi3ap_machine_class_init,
+ }, {
.name = MACHINE_TYPE_NAME("raspi3b"),
.parent = TYPE_RASPI_MACHINE,
.class_init = raspi3b_machine_class_init,
diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
index 01863510d0..7d9e180c0d 100644
--- a/hw/arm/sbsa-ref.c
+++ b/hw/arm/sbsa-ref.c
@@ -40,6 +40,7 @@
#include "hw/qdev-properties.h"
#include "hw/usb.h"
#include "hw/char/pl011.h"
+#include "hw/watchdog/sbsa_gwdt.h"
#include "net/net.h"
#include "qom/object.h"
@@ -64,6 +65,9 @@ enum {
SBSA_GIC_DIST,
SBSA_GIC_REDIST,
SBSA_SECURE_EC,
+ SBSA_GWDT,
+ SBSA_GWDT_REFRESH,
+ SBSA_GWDT_CONTROL,
SBSA_SMMU,
SBSA_UART,
SBSA_RTC,
@@ -104,6 +108,8 @@ static const MemMapEntry sbsa_ref_memmap[] = {
[SBSA_GIC_DIST] = { 0x40060000, 0x00010000 },
[SBSA_GIC_REDIST] = { 0x40080000, 0x04000000 },
[SBSA_SECURE_EC] = { 0x50000000, 0x00001000 },
+ [SBSA_GWDT_REFRESH] = { 0x50010000, 0x00001000 },
+ [SBSA_GWDT_CONTROL] = { 0x50011000, 0x00001000 },
[SBSA_UART] = { 0x60000000, 0x00001000 },
[SBSA_RTC] = { 0x60010000, 0x00001000 },
[SBSA_GPIO] = { 0x60020000, 0x00001000 },
@@ -134,6 +140,7 @@ static const int sbsa_ref_irqmap[] = {
[SBSA_AHCI] = 10,
[SBSA_EHCI] = 11,
[SBSA_SMMU] = 12, /* ... to 15 */
+ [SBSA_GWDT] = 16,
};
static uint64_t sbsa_ref_cpu_mp_affinity(SBSAMachineState *sms, int idx)
@@ -448,6 +455,20 @@ static void create_rtc(const SBSAMachineState *sms)
sysbus_create_simple("pl031", base, qdev_get_gpio_in(sms->gic, irq));
}
+static void create_wdt(const SBSAMachineState *sms)
+{
+ hwaddr rbase = sbsa_ref_memmap[SBSA_GWDT_REFRESH].base;
+ hwaddr cbase = sbsa_ref_memmap[SBSA_GWDT_CONTROL].base;
+ DeviceState *dev = qdev_new(TYPE_WDT_SBSA);
+ SysBusDevice *s = SYS_BUS_DEVICE(dev);
+ int irq = sbsa_ref_irqmap[SBSA_GWDT];
+
+ sysbus_realize_and_unref(s, &error_fatal);
+ sysbus_mmio_map(s, 0, rbase);
+ sysbus_mmio_map(s, 1, cbase);
+ sysbus_connect_irq(s, 0, qdev_get_gpio_in(sms->gic, irq));
+}
+
static DeviceState *gpio_key_dev;
static void sbsa_ref_powerdown_req(Notifier *n, void *opaque)
{
@@ -731,6 +752,8 @@ static void sbsa_ref_init(MachineState *machine)
create_rtc(sms);
+ create_wdt(sms);
+
create_gpio(sms);
create_ahci(sms);
diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index 0122700e72..2017ba7a5a 100644
--- a/hw/arm/smmuv3.c
+++ b/hw/arm/smmuv3.c
@@ -1440,6 +1440,7 @@ static const VMStateDescription vmstate_smmuv3 = {
.name = "smmuv3",
.version_id = 1,
.minimum_version_id = 1,
+ .priority = MIG_PRI_IOMMU,
.fields = (VMStateField[]) {
VMSTATE_UINT32(features, SMMUv3State),
VMSTATE_UINT8(sid_size, SMMUv3State),
diff --git a/hw/arm/trace-events b/hw/arm/trace-events
index c8a4d80f6b..a335ee891d 100644
--- a/hw/arm/trace-events
+++ b/hw/arm/trace-events
@@ -41,7 +41,7 @@ smmuv3_get_cd(uint64_t addr) "CD addr: 0x%"PRIx64
smmuv3_decode_cd(uint32_t oas) "oas=%d"
smmuv3_decode_cd_tt(int i, uint32_t tsz, uint64_t ttb, uint32_t granule_sz, bool had) "TT[%d]:tsz:%d ttb:0x%"PRIx64" granule_sz:%d had:%d"
smmuv3_cmdq_cfgi_ste(int streamid) "streamid =%d"
-smmuv3_cmdq_cfgi_ste_range(int start, int end) "start=0x%d - end=0x%d"
+smmuv3_cmdq_cfgi_ste_range(int start, int end) "start=0x%x - end=0x%x"
smmuv3_cmdq_cfgi_cd(uint32_t sid) "streamid = %d"
smmuv3_config_cache_hit(uint32_t sid, uint32_t hits, uint32_t misses, uint32_t perc) "Config cache HIT for sid %d (hits=%d, misses=%d, hit rate=%d)"
smmuv3_config_cache_miss(uint32_t sid, uint32_t hits, uint32_t misses, uint32_t perc) "Config cache MISS for sid %d (hits=%d, misses=%d, hit rate=%d)"
diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c
index 03e23201b1..ee1282241e 100644
--- a/hw/arm/xlnx-versal-virt.c
+++ b/hw/arm/xlnx-versal-virt.c
@@ -561,6 +561,7 @@ static void versal_virt_machine_class_init(ObjectClass *oc, void *data)
mc->desc = "Xilinx Versal Virtual development board";
mc->init = versal_virt_init;
+ mc->min_cpus = XLNX_VERSAL_NR_ACPUS;
mc->max_cpus = XLNX_VERSAL_NR_ACPUS;
mc->default_cpus = XLNX_VERSAL_NR_ACPUS;
mc->no_cdrom = true;
diff --git a/hw/char/pl011.c b/hw/char/pl011.c
index 13e784f9d9..ede16c781c 100644
--- a/hw/char/pl011.c
+++ b/hw/char/pl011.c
@@ -22,6 +22,7 @@
#include "hw/char/pl011.h"
#include "hw/irq.h"
#include "hw/sysbus.h"
+#include "hw/qdev-clock.h"
#include "migration/vmstate.h"
#include "chardev/char-fe.h"
#include "qemu/log.h"
@@ -169,6 +170,25 @@ static void pl011_set_read_trigger(PL011State *s)
s->read_trigger = 1;
}
+static unsigned int pl011_get_baudrate(const PL011State *s)
+{
+ uint64_t clk;
+
+ if (s->fbrd == 0) {
+ return 0;
+ }
+
+ clk = clock_get_hz(s->clk);
+ return (clk / ((s->ibrd << 6) + s->fbrd)) << 2;
+}
+
+static void pl011_trace_baudrate_change(const PL011State *s)
+{
+ trace_pl011_baudrate_change(pl011_get_baudrate(s),
+ clock_get_hz(s->clk),
+ s->ibrd, s->fbrd);
+}
+
static void pl011_write(void *opaque, hwaddr offset,
uint64_t value, unsigned size)
{
@@ -198,9 +218,11 @@ static void pl011_write(void *opaque, hwaddr offset,
break;
case 9: /* UARTIBRD */
s->ibrd = value;
+ pl011_trace_baudrate_change(s);
break;
case 10: /* UARTFBRD */
s->fbrd = value;
+ pl011_trace_baudrate_change(s);
break;
case 11: /* UARTLCR_H */
/* Reset the FIFO state on FIFO enable or disable */
@@ -286,12 +308,29 @@ static void pl011_event(void *opaque, QEMUChrEvent event)
pl011_put_fifo(opaque, 0x400);
}
+static void pl011_clock_update(void *opaque)
+{
+ PL011State *s = PL011(opaque);
+
+ pl011_trace_baudrate_change(s);
+}
+
static const MemoryRegionOps pl011_ops = {
.read = pl011_read,
.write = pl011_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
+static const VMStateDescription vmstate_pl011_clock = {
+ .name = "pl011/clock",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_CLOCK(clk, PL011State),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static const VMStateDescription vmstate_pl011 = {
.name = "pl011",
.version_id = 2,
@@ -314,6 +353,10 @@ static const VMStateDescription vmstate_pl011 = {
VMSTATE_INT32(read_count, PL011State),
VMSTATE_INT32(read_trigger, PL011State),
VMSTATE_END_OF_LIST()
+ },
+ .subsections = (const VMStateDescription * []) {
+ &vmstate_pl011_clock,
+ NULL
}
};
@@ -334,6 +377,8 @@ static void pl011_init(Object *obj)
sysbus_init_irq(sbd, &s->irq[i]);
}
+ s->clk = qdev_init_clock_in(DEVICE(obj), "clk", pl011_clock_update, s);
+
s->read_trigger = 1;
s->ifl = 0x12;
s->cr = 0x300;
diff --git a/hw/char/trace-events b/hw/char/trace-events
index 609df10fed..81026f6612 100644
--- a/hw/char/trace-events
+++ b/hw/char/trace-events
@@ -65,6 +65,7 @@ pl011_write(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x"
pl011_can_receive(uint32_t lcr, int read_count, int r) "LCR 0x%08x read_count %d returning %d"
pl011_put_fifo(uint32_t c, int read_count) "new char 0x%x read_count now %d"
pl011_put_fifo_full(void) "FIFO now full, RXFF set"
+pl011_baudrate_change(unsigned int baudrate, uint64_t clock, uint32_t ibrd, uint32_t fbrd) "new baudrate %u (clk: %" PRIu64 "hz, ibrd: %" PRIu32 ", fbrd: %" PRIu32 ")"
# cmsdk-apb-uart.c
cmsdk_apb_uart_read(uint64_t offset, uint64_t data, unsigned size) "CMSDK APB UART read: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
diff --git a/hw/core/clock.c b/hw/core/clock.c
index f866717a83..8c6af223e7 100644
--- a/hw/core/clock.c
+++ b/hw/core/clock.c
@@ -54,8 +54,8 @@ bool clock_set(Clock *clk, uint64_t period)
if (clk->period == period) {
return false;
}
- trace_clock_set(CLOCK_PATH(clk), CLOCK_PERIOD_TO_NS(clk->period),
- CLOCK_PERIOD_TO_NS(period));
+ trace_clock_set(CLOCK_PATH(clk), CLOCK_PERIOD_TO_HZ(clk->period),
+ CLOCK_PERIOD_TO_HZ(period));
clk->period = period;
return true;
@@ -69,7 +69,7 @@ static void clock_propagate_period(Clock *clk, bool call_callbacks)
if (child->period != clk->period) {
child->period = clk->period;
trace_clock_update(CLOCK_PATH(child), CLOCK_PATH(clk),
- CLOCK_PERIOD_TO_NS(clk->period),
+ CLOCK_PERIOD_TO_HZ(clk->period),
call_callbacks);
if (call_callbacks && child->callback) {
child->callback(child->callback_opaque);
diff --git a/hw/core/ptimer.c b/hw/core/ptimer.c
index c6d2beb1da..2aa97cb665 100644
--- a/hw/core/ptimer.c
+++ b/hw/core/ptimer.c
@@ -117,6 +117,10 @@ static void ptimer_reload(ptimer_state *s, int delta_adjust)
}
if (delta == 0) {
+ if (s->enabled == 0) {
+ /* trigger callback disabled the timer already */
+ return;
+ }
if (!qtest_enabled()) {
fprintf(stderr, "Timer with delta zero, disabling\n");
}
diff --git a/hw/core/trace-events b/hw/core/trace-events
index 1ac60ede6b..360ddeb2c8 100644
--- a/hw/core/trace-events
+++ b/hw/core/trace-events
@@ -31,6 +31,6 @@ resettable_transitional_function(void *obj, const char *objtype) "obj=%p(%s)"
# clock.c
clock_set_source(const char *clk, const char *src) "'%s', src='%s'"
clock_disconnect(const char *clk) "'%s'"
-clock_set(const char *clk, uint64_t old, uint64_t new) "'%s', ns=%"PRIu64"->%"PRIu64
+clock_set(const char *clk, uint64_t old, uint64_t new) "'%s', %"PRIu64"Hz->%"PRIu64"Hz"
clock_propagate(const char *clk) "'%s'"
-clock_update(const char *clk, const char *src, uint64_t val, int cb) "'%s', src='%s', ns=%"PRIu64", cb=%d"
+clock_update(const char *clk, const char *src, uint64_t hz, int cb) "'%s', src='%s', val=%"PRIu64"Hz cb=%d"
diff --git a/hw/gpio/meson.build b/hw/gpio/meson.build
index 86cae9a0f3..5c0a7d7b95 100644
--- a/hw/gpio/meson.build
+++ b/hw/gpio/meson.build
@@ -6,6 +6,7 @@ softmmu_ss.add(when: 'CONFIG_PUV3', if_true: files('puv3_gpio.c'))
softmmu_ss.add(when: 'CONFIG_ZAURUS', if_true: files('zaurus.c'))
softmmu_ss.add(when: 'CONFIG_IMX', if_true: files('imx_gpio.c'))
+softmmu_ss.add(when: 'CONFIG_NPCM7XX', if_true: files('npcm7xx_gpio.c'))
softmmu_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_gpio.c'))
softmmu_ss.add(when: 'CONFIG_OMAP', if_true: files('omap_gpio.c'))
softmmu_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_gpio.c'))
diff --git a/hw/gpio/npcm7xx_gpio.c b/hw/gpio/npcm7xx_gpio.c
new file mode 100644
index 0000000000..3376901ab1
--- /dev/null
+++ b/hw/gpio/npcm7xx_gpio.c
@@ -0,0 +1,424 @@
+/*
+ * Nuvoton NPCM7xx General Purpose Input / Output (GPIO)
+ *
+ * Copyright 2020 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "qemu/osdep.h"
+
+#include "hw/gpio/npcm7xx_gpio.h"
+#include "hw/irq.h"
+#include "hw/qdev-properties.h"
+#include "migration/vmstate.h"
+#include "qapi/error.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "qemu/units.h"
+#include "trace.h"
+
+/* 32-bit register indices. */
+enum NPCM7xxGPIORegister {
+ NPCM7XX_GPIO_TLOCK1,
+ NPCM7XX_GPIO_DIN,
+ NPCM7XX_GPIO_POL,
+ NPCM7XX_GPIO_DOUT,
+ NPCM7XX_GPIO_OE,
+ NPCM7XX_GPIO_OTYP,
+ NPCM7XX_GPIO_MP,
+ NPCM7XX_GPIO_PU,
+ NPCM7XX_GPIO_PD,
+ NPCM7XX_GPIO_DBNC,
+ NPCM7XX_GPIO_EVTYP,
+ NPCM7XX_GPIO_EVBE,
+ NPCM7XX_GPIO_OBL0,
+ NPCM7XX_GPIO_OBL1,
+ NPCM7XX_GPIO_OBL2,
+ NPCM7XX_GPIO_OBL3,
+ NPCM7XX_GPIO_EVEN,
+ NPCM7XX_GPIO_EVENS,
+ NPCM7XX_GPIO_EVENC,
+ NPCM7XX_GPIO_EVST,
+ NPCM7XX_GPIO_SPLCK,
+ NPCM7XX_GPIO_MPLCK,
+ NPCM7XX_GPIO_IEM,
+ NPCM7XX_GPIO_OSRC,
+ NPCM7XX_GPIO_ODSC,
+ NPCM7XX_GPIO_DOS = 0x68 / sizeof(uint32_t),
+ NPCM7XX_GPIO_DOC,
+ NPCM7XX_GPIO_OES,
+ NPCM7XX_GPIO_OEC,
+ NPCM7XX_GPIO_TLOCK2 = 0x7c / sizeof(uint32_t),
+ NPCM7XX_GPIO_REGS_END,
+};
+
+#define NPCM7XX_GPIO_REGS_SIZE (4 * KiB)
+
+#define NPCM7XX_GPIO_LOCK_MAGIC1 (0xc0defa73)
+#define NPCM7XX_GPIO_LOCK_MAGIC2 (0xc0de1248)
+
+static void npcm7xx_gpio_update_events(NPCM7xxGPIOState *s, uint32_t din_diff)
+{
+ uint32_t din_new = s->regs[NPCM7XX_GPIO_DIN];
+
+ /* Trigger on high level */
+ s->regs[NPCM7XX_GPIO_EVST] |= din_new & ~s->regs[NPCM7XX_GPIO_EVTYP];
+ /* Trigger on both edges */
+ s->regs[NPCM7XX_GPIO_EVST] |= (din_diff & s->regs[NPCM7XX_GPIO_EVTYP]
+ & s->regs[NPCM7XX_GPIO_EVBE]);
+ /* Trigger on rising edge */
+ s->regs[NPCM7XX_GPIO_EVST] |= (din_diff & din_new
+ & s->regs[NPCM7XX_GPIO_EVTYP]);
+
+ trace_npcm7xx_gpio_update_events(DEVICE(s)->canonical_path,
+ s->regs[NPCM7XX_GPIO_EVST],
+ s->regs[NPCM7XX_GPIO_EVEN]);
+ qemu_set_irq(s->irq, !!(s->regs[NPCM7XX_GPIO_EVST]
+ & s->regs[NPCM7XX_GPIO_EVEN]));
+}
+
+static void npcm7xx_gpio_update_pins(NPCM7xxGPIOState *s, uint32_t diff)
+{
+ uint32_t drive_en;
+ uint32_t drive_lvl;
+ uint32_t not_driven;
+ uint32_t undefined;
+ uint32_t pin_diff;
+ uint32_t din_old;
+
+ /* Calculate level of each pin driven by GPIO controller. */
+ drive_lvl = s->regs[NPCM7XX_GPIO_DOUT] ^ s->regs[NPCM7XX_GPIO_POL];
+ /* If OTYP=1, only drive low (open drain) */
+ drive_en = s->regs[NPCM7XX_GPIO_OE] & ~(s->regs[NPCM7XX_GPIO_OTYP]
+ & drive_lvl);
+ /*
+ * If a pin is driven to opposite levels by the GPIO controller and the
+ * external driver, the result is undefined.
+ */
+ undefined = drive_en & s->ext_driven & (drive_lvl ^ s->ext_level);
+ if (undefined) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: pins have multiple drivers: 0x%" PRIx32 "\n",
+ DEVICE(s)->canonical_path, undefined);
+ }
+
+ not_driven = ~(drive_en | s->ext_driven);
+ pin_diff = s->pin_level;
+
+ /* Set pins to externally driven level. */
+ s->pin_level = s->ext_level & s->ext_driven;
+ /* Set internally driven pins, ignoring any conflicts. */
+ s->pin_level |= drive_lvl & drive_en;
+ /* Pull up undriven pins with internal pull-up enabled. */
+ s->pin_level |= not_driven & s->regs[NPCM7XX_GPIO_PU];
+ /* Pins not driven, pulled up or pulled down are undefined */
+ undefined |= not_driven & ~(s->regs[NPCM7XX_GPIO_PU]
+ | s->regs[NPCM7XX_GPIO_PD]);
+
+ /* If any pins changed state, update the outgoing GPIOs. */
+ pin_diff ^= s->pin_level;
+ pin_diff |= undefined & diff;
+ if (pin_diff) {
+ int i;
+
+ for (i = 0; i < NPCM7XX_GPIO_NR_PINS; i++) {
+ uint32_t mask = BIT(i);
+ if (pin_diff & mask) {
+ int level = (undefined & mask) ? -1 : !!(s->pin_level & mask);
+ trace_npcm7xx_gpio_set_output(DEVICE(s)->canonical_path,
+ i, level);
+ qemu_set_irq(s->output[i], level);
+ }
+ }
+ }
+
+ /* Calculate new value of DIN after masking and polarity setting. */
+ din_old = s->regs[NPCM7XX_GPIO_DIN];
+ s->regs[NPCM7XX_GPIO_DIN] = ((s->pin_level & s->regs[NPCM7XX_GPIO_IEM])
+ ^ s->regs[NPCM7XX_GPIO_POL]);
+
+ /* See if any new events triggered because of all this. */
+ npcm7xx_gpio_update_events(s, din_old ^ s->regs[NPCM7XX_GPIO_DIN]);
+}
+
+static bool npcm7xx_gpio_is_locked(NPCM7xxGPIOState *s)
+{
+ return s->regs[NPCM7XX_GPIO_TLOCK1] == 1;
+}
+
+static uint64_t npcm7xx_gpio_regs_read(void *opaque, hwaddr addr,
+ unsigned int size)
+{
+ hwaddr reg = addr / sizeof(uint32_t);
+ NPCM7xxGPIOState *s = opaque;
+ uint64_t value = 0;
+
+ switch (reg) {
+ case NPCM7XX_GPIO_TLOCK1 ... NPCM7XX_GPIO_EVEN:
+ case NPCM7XX_GPIO_EVST ... NPCM7XX_GPIO_ODSC:
+ value = s->regs[reg];
+ break;
+
+ case NPCM7XX_GPIO_EVENS ... NPCM7XX_GPIO_EVENC:
+ case NPCM7XX_GPIO_DOS ... NPCM7XX_GPIO_TLOCK2:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: read from write-only register 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, addr);
+ break;
+
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: read from invalid offset 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, addr);
+ break;
+ }
+
+ trace_npcm7xx_gpio_read(DEVICE(s)->canonical_path, addr, value);
+
+ return value;
+}
+
+static void npcm7xx_gpio_regs_write(void *opaque, hwaddr addr, uint64_t v,
+ unsigned int size)
+{
+ hwaddr reg = addr / sizeof(uint32_t);
+ NPCM7xxGPIOState *s = opaque;
+ uint32_t value = v;
+ uint32_t diff;
+
+ trace_npcm7xx_gpio_write(DEVICE(s)->canonical_path, addr, v);
+
+ if (npcm7xx_gpio_is_locked(s)) {
+ switch (reg) {
+ case NPCM7XX_GPIO_TLOCK1:
+ if (s->regs[NPCM7XX_GPIO_TLOCK2] == NPCM7XX_GPIO_LOCK_MAGIC2 &&
+ value == NPCM7XX_GPIO_LOCK_MAGIC1) {
+ s->regs[NPCM7XX_GPIO_TLOCK1] = 0;
+ s->regs[NPCM7XX_GPIO_TLOCK2] = 0;
+ }
+ break;
+
+ case NPCM7XX_GPIO_TLOCK2:
+ s->regs[reg] = value;
+ break;
+
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: write to locked register @ 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, addr);
+ break;
+ }
+
+ return;
+ }
+
+ diff = s->regs[reg] ^ value;
+
+ switch (reg) {
+ case NPCM7XX_GPIO_TLOCK1:
+ case NPCM7XX_GPIO_TLOCK2:
+ s->regs[NPCM7XX_GPIO_TLOCK1] = 1;
+ s->regs[NPCM7XX_GPIO_TLOCK2] = 0;
+ break;
+
+ case NPCM7XX_GPIO_DIN:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: write to read-only register @ 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, addr);
+ break;
+
+ case NPCM7XX_GPIO_POL:
+ case NPCM7XX_GPIO_DOUT:
+ case NPCM7XX_GPIO_OE:
+ case NPCM7XX_GPIO_OTYP:
+ case NPCM7XX_GPIO_PU:
+ case NPCM7XX_GPIO_PD:
+ case NPCM7XX_GPIO_IEM:
+ s->regs[reg] = value;
+ npcm7xx_gpio_update_pins(s, diff);
+ break;
+
+ case NPCM7XX_GPIO_DOS:
+ s->regs[NPCM7XX_GPIO_DOUT] |= value;
+ npcm7xx_gpio_update_pins(s, value);
+ break;
+ case NPCM7XX_GPIO_DOC:
+ s->regs[NPCM7XX_GPIO_DOUT] &= ~value;
+ npcm7xx_gpio_update_pins(s, value);
+ break;
+ case NPCM7XX_GPIO_OES:
+ s->regs[NPCM7XX_GPIO_OE] |= value;
+ npcm7xx_gpio_update_pins(s, value);
+ break;
+ case NPCM7XX_GPIO_OEC:
+ s->regs[NPCM7XX_GPIO_OE] &= ~value;
+ npcm7xx_gpio_update_pins(s, value);
+ break;
+
+ case NPCM7XX_GPIO_EVTYP:
+ case NPCM7XX_GPIO_EVBE:
+ case NPCM7XX_GPIO_EVEN:
+ s->regs[reg] = value;
+ npcm7xx_gpio_update_events(s, 0);
+ break;
+
+ case NPCM7XX_GPIO_EVENS:
+ s->regs[NPCM7XX_GPIO_EVEN] |= value;
+ npcm7xx_gpio_update_events(s, 0);
+ break;
+ case NPCM7XX_GPIO_EVENC:
+ s->regs[NPCM7XX_GPIO_EVEN] &= ~value;
+ npcm7xx_gpio_update_events(s, 0);
+ break;
+
+ case NPCM7XX_GPIO_EVST:
+ s->regs[reg] &= ~value;
+ npcm7xx_gpio_update_events(s, 0);
+ break;
+
+ case NPCM7XX_GPIO_MP:
+ case NPCM7XX_GPIO_DBNC:
+ case NPCM7XX_GPIO_OSRC:
+ case NPCM7XX_GPIO_ODSC:
+ /* Nothing to do; just store the value. */
+ s->regs[reg] = value;
+ break;
+
+ case NPCM7XX_GPIO_OBL0:
+ case NPCM7XX_GPIO_OBL1:
+ case NPCM7XX_GPIO_OBL2:
+ case NPCM7XX_GPIO_OBL3:
+ s->regs[reg] = value;
+ qemu_log_mask(LOG_UNIMP, "%s: Blinking is not implemented\n",
+ __func__);
+ break;
+
+ case NPCM7XX_GPIO_SPLCK:
+ case NPCM7XX_GPIO_MPLCK:
+ qemu_log_mask(LOG_UNIMP, "%s: Per-pin lock is not implemented\n",
+ __func__);
+ break;
+
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: write to invalid offset 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, addr);
+ break;
+ }
+}
+
+static const MemoryRegionOps npcm7xx_gpio_regs_ops = {
+ .read = npcm7xx_gpio_regs_read,
+ .write = npcm7xx_gpio_regs_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ .unaligned = false,
+ },
+};
+
+static void npcm7xx_gpio_set_input(void *opaque, int line, int level)
+{
+ NPCM7xxGPIOState *s = opaque;
+
+ trace_npcm7xx_gpio_set_input(DEVICE(s)->canonical_path, line, level);
+
+ g_assert(line >= 0 && line < NPCM7XX_GPIO_NR_PINS);
+
+ s->ext_driven = deposit32(s->ext_driven, line, 1, level >= 0);
+ s->ext_level = deposit32(s->ext_level, line, 1, level > 0);
+
+ npcm7xx_gpio_update_pins(s, BIT(line));
+}
+
+static void npcm7xx_gpio_enter_reset(Object *obj, ResetType type)
+{
+ NPCM7xxGPIOState *s = NPCM7XX_GPIO(obj);
+
+ memset(s->regs, 0, sizeof(s->regs));
+
+ s->regs[NPCM7XX_GPIO_PU] = s->reset_pu;
+ s->regs[NPCM7XX_GPIO_PD] = s->reset_pd;
+ s->regs[NPCM7XX_GPIO_OSRC] = s->reset_osrc;
+ s->regs[NPCM7XX_GPIO_ODSC] = s->reset_odsc;
+}
+
+static void npcm7xx_gpio_hold_reset(Object *obj)
+{
+ NPCM7xxGPIOState *s = NPCM7XX_GPIO(obj);
+
+ npcm7xx_gpio_update_pins(s, -1);
+}
+
+static void npcm7xx_gpio_init(Object *obj)
+{
+ NPCM7xxGPIOState *s = NPCM7XX_GPIO(obj);
+ DeviceState *dev = DEVICE(obj);
+
+ memory_region_init_io(&s->mmio, obj, &npcm7xx_gpio_regs_ops, s,
+ "regs", NPCM7XX_GPIO_REGS_SIZE);
+ sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
+ sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
+
+ qdev_init_gpio_in(dev, npcm7xx_gpio_set_input, NPCM7XX_GPIO_NR_PINS);
+ qdev_init_gpio_out(dev, s->output, NPCM7XX_GPIO_NR_PINS);
+}
+
+static const VMStateDescription vmstate_npcm7xx_gpio = {
+ .name = "npcm7xx-gpio",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(pin_level, NPCM7xxGPIOState),
+ VMSTATE_UINT32(ext_level, NPCM7xxGPIOState),
+ VMSTATE_UINT32(ext_driven, NPCM7xxGPIOState),
+ VMSTATE_UINT32_ARRAY(regs, NPCM7xxGPIOState, NPCM7XX_GPIO_NR_REGS),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static Property npcm7xx_gpio_properties[] = {
+ /* Bit n set => pin n has pullup enabled by default. */
+ DEFINE_PROP_UINT32("reset-pullup", NPCM7xxGPIOState, reset_pu, 0),
+ /* Bit n set => pin n has pulldown enabled by default. */
+ DEFINE_PROP_UINT32("reset-pulldown", NPCM7xxGPIOState, reset_pd, 0),
+ /* Bit n set => pin n has high slew rate by default. */
+ DEFINE_PROP_UINT32("reset-osrc", NPCM7xxGPIOState, reset_osrc, 0),
+ /* Bit n set => pin n has high drive strength by default. */
+ DEFINE_PROP_UINT32("reset-odsc", NPCM7xxGPIOState, reset_odsc, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void npcm7xx_gpio_class_init(ObjectClass *klass, void *data)
+{
+ ResettableClass *reset = RESETTABLE_CLASS(klass);
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ QEMU_BUILD_BUG_ON(NPCM7XX_GPIO_REGS_END > NPCM7XX_GPIO_NR_REGS);
+
+ dc->desc = "NPCM7xx GPIO Controller";
+ dc->vmsd = &vmstate_npcm7xx_gpio;
+ reset->phases.enter = npcm7xx_gpio_enter_reset;
+ reset->phases.hold = npcm7xx_gpio_hold_reset;
+ device_class_set_props(dc, npcm7xx_gpio_properties);
+}
+
+static const TypeInfo npcm7xx_gpio_types[] = {
+ {
+ .name = TYPE_NPCM7XX_GPIO,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(NPCM7xxGPIOState),
+ .class_init = npcm7xx_gpio_class_init,
+ .instance_init = npcm7xx_gpio_init,
+ },
+};
+DEFINE_TYPES(npcm7xx_gpio_types);
diff --git a/hw/gpio/trace-events b/hw/gpio/trace-events
index 6e3f048745..46ab9323bd 100644
--- a/hw/gpio/trace-events
+++ b/hw/gpio/trace-events
@@ -1,5 +1,12 @@
# See docs/devel/tracing.txt for syntax documentation.
+# npcm7xx_gpio.c
+npcm7xx_gpio_read(const char *id, uint64_t offset, uint64_t value) " %s offset: 0x%04" PRIx64 " value 0x%08" PRIx64
+npcm7xx_gpio_write(const char *id, uint64_t offset, uint64_t value) "%s offset: 0x%04" PRIx64 " value 0x%08" PRIx64
+npcm7xx_gpio_set_input(const char *id, int32_t line, int32_t level) "%s line: %" PRIi32 " level: %" PRIi32
+npcm7xx_gpio_set_output(const char *id, int32_t line, int32_t level) "%s line: %" PRIi32 " level: %" PRIi32
+npcm7xx_gpio_update_events(const char *id, uint32_t evst, uint32_t even) "%s evst: 0x%08" PRIx32 " even: 0x%08" PRIx32
+
# nrf51_gpio.c
nrf51_gpio_read(uint64_t offset, uint64_t r) "offset 0x%" PRIx64 " value 0x%" PRIx64
nrf51_gpio_write(uint64_t offset, uint64_t value) "offset 0x%" PRIx64 " value 0x%" PRIx64
diff --git a/hw/misc/bcm2835_cprman.c b/hw/misc/bcm2835_cprman.c
new file mode 100644
index 0000000000..7e415a017c
--- /dev/null
+++ b/hw/misc/bcm2835_cprman.c
@@ -0,0 +1,808 @@
+/*
+ * BCM2835 CPRMAN clock manager
+ *
+ * Copyright (c) 2020 Luc Michel <luc@lmichel.fr>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+/*
+ * This peripheral is roughly divided into 3 main parts:
+ * - the PLLs
+ * - the PLL channels
+ * - the clock muxes
+ *
+ * A main oscillator (xosc) feeds all the PLLs. Each PLLs has one or more
+ * channels. Those channel are then connected to the clock muxes. Each mux has
+ * multiples sources (usually the xosc, some of the PLL channels and some "test
+ * debug" clocks). A mux is configured to select a given source through its
+ * control register. Each mux has one output clock that also goes out of the
+ * CPRMAN. This output clock usually connects to another peripheral in the SoC
+ * (so a given mux is dedicated to a peripheral).
+ *
+ * At each level (PLL, channel and mux), the clock can be altered through
+ * dividers (and multipliers in case of the PLLs), and can be disabled (in this
+ * case, the next levels see no clock).
+ *
+ * This can be sum-up as follows (this is an example and not the actual BCM2835
+ * clock tree):
+ *
+ * /-->[PLL]-|->[PLL channel]--... [mux]--> to peripherals
+ * | |->[PLL channel] muxes takes [mux]
+ * | \->[PLL channel] inputs from [mux]
+ * | some channels [mux]
+ * [xosc]---|-->[PLL]-|->[PLL channel] and other srcs [mux]
+ * | \->[PLL channel] ...-->[mux]
+ * | [mux]
+ * \-->[PLL]--->[PLL channel] [mux]
+ *
+ * The page at https://elinux.org/The_Undocumented_Pi gives the actual clock
+ * tree configuration.
+ *
+ * The CPRMAN exposes clock outputs with the name of the clock mux suffixed
+ * with "-out" (e.g. "uart-out", "h264-out", ...).
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "migration/vmstate.h"
+#include "hw/qdev-properties.h"
+#include "hw/misc/bcm2835_cprman.h"
+#include "hw/misc/bcm2835_cprman_internals.h"
+#include "trace.h"
+
+/* PLL */
+
+static void pll_reset(DeviceState *dev)
+{
+ CprmanPllState *s = CPRMAN_PLL(dev);
+ const PLLResetInfo *info = &PLL_RESET_INFO[s->id];
+
+ *s->reg_cm = info->cm;
+ *s->reg_a2w_ctrl = info->a2w_ctrl;
+ memcpy(s->reg_a2w_ana, info->a2w_ana, sizeof(info->a2w_ana));
+ *s->reg_a2w_frac = info->a2w_frac;
+}
+
+static bool pll_is_locked(const CprmanPllState *pll)
+{
+ return !FIELD_EX32(*pll->reg_a2w_ctrl, A2W_PLLx_CTRL, PWRDN)
+ && !FIELD_EX32(*pll->reg_cm, CM_PLLx, ANARST);
+}
+
+static void pll_update(CprmanPllState *pll)
+{
+ uint64_t freq, ndiv, fdiv, pdiv;
+
+ if (!pll_is_locked(pll)) {
+ clock_update(pll->out, 0);
+ return;
+ }
+
+ pdiv = FIELD_EX32(*pll->reg_a2w_ctrl, A2W_PLLx_CTRL, PDIV);
+
+ if (!pdiv) {
+ clock_update(pll->out, 0);
+ return;
+ }
+
+ ndiv = FIELD_EX32(*pll->reg_a2w_ctrl, A2W_PLLx_CTRL, NDIV);
+ fdiv = FIELD_EX32(*pll->reg_a2w_frac, A2W_PLLx_FRAC, FRAC);
+
+ if (pll->reg_a2w_ana[1] & pll->prediv_mask) {
+ /* The prescaler doubles the parent frequency */
+ ndiv *= 2;
+ fdiv *= 2;
+ }
+
+ /*
+ * We have a multiplier with an integer part (ndiv) and a fractional part
+ * (fdiv), and a divider (pdiv).
+ */
+ freq = clock_get_hz(pll->xosc_in) *
+ ((ndiv << R_A2W_PLLx_FRAC_FRAC_LENGTH) + fdiv);
+ freq /= pdiv;
+ freq >>= R_A2W_PLLx_FRAC_FRAC_LENGTH;
+
+ clock_update_hz(pll->out, freq);
+}
+
+static void pll_xosc_update(void *opaque)
+{
+ pll_update(CPRMAN_PLL(opaque));
+}
+
+static void pll_init(Object *obj)
+{
+ CprmanPllState *s = CPRMAN_PLL(obj);
+
+ s->xosc_in = qdev_init_clock_in(DEVICE(s), "xosc-in", pll_xosc_update, s);
+ s->out = qdev_init_clock_out(DEVICE(s), "out");
+}
+
+static const VMStateDescription pll_vmstate = {
+ .name = TYPE_CPRMAN_PLL,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_CLOCK(xosc_in, CprmanPllState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void pll_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = pll_reset;
+ dc->vmsd = &pll_vmstate;
+}
+
+static const TypeInfo cprman_pll_info = {
+ .name = TYPE_CPRMAN_PLL,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(CprmanPllState),
+ .class_init = pll_class_init,
+ .instance_init = pll_init,
+};
+
+
+/* PLL channel */
+
+static void pll_channel_reset(DeviceState *dev)
+{
+ CprmanPllChannelState *s = CPRMAN_PLL_CHANNEL(dev);
+ const PLLChannelResetInfo *info = &PLL_CHANNEL_RESET_INFO[s->id];
+
+ *s->reg_a2w_ctrl = info->a2w_ctrl;
+}
+
+static bool pll_channel_is_enabled(CprmanPllChannelState *channel)
+{
+ /*
+ * XXX I'm not sure of the purpose of the LOAD field. The Linux driver does
+ * not set it when enabling the channel, but does clear it when disabling
+ * it.
+ */
+ return !FIELD_EX32(*channel->reg_a2w_ctrl, A2W_PLLx_CHANNELy, DISABLE)
+ && !(*channel->reg_cm & channel->hold_mask);
+}
+
+static void pll_channel_update(CprmanPllChannelState *channel)
+{
+ uint64_t freq, div;
+
+ if (!pll_channel_is_enabled(channel)) {
+ clock_update(channel->out, 0);
+ return;
+ }
+
+ div = FIELD_EX32(*channel->reg_a2w_ctrl, A2W_PLLx_CHANNELy, DIV);
+
+ if (!div) {
+ /*
+ * It seems that when the divider value is 0, it is considered as
+ * being maximum by the hardware (see the Linux driver).
+ */
+ div = R_A2W_PLLx_CHANNELy_DIV_MASK;
+ }
+
+ /* Some channels have an additional fixed divider */
+ freq = clock_get_hz(channel->pll_in) / (div * channel->fixed_divider);
+
+ clock_update_hz(channel->out, freq);
+}
+
+/* Update a PLL and all its channels */
+static void pll_update_all_channels(BCM2835CprmanState *s,
+ CprmanPllState *pll)
+{
+ size_t i;
+
+ pll_update(pll);
+
+ for (i = 0; i < CPRMAN_NUM_PLL_CHANNEL; i++) {
+ CprmanPllChannelState *channel = &s->channels[i];
+ if (channel->parent == pll->id) {
+ pll_channel_update(channel);
+ }
+ }
+}
+
+static void pll_channel_pll_in_update(void *opaque)
+{
+ pll_channel_update(CPRMAN_PLL_CHANNEL(opaque));
+}
+
+static void pll_channel_init(Object *obj)
+{
+ CprmanPllChannelState *s = CPRMAN_PLL_CHANNEL(obj);
+
+ s->pll_in = qdev_init_clock_in(DEVICE(s), "pll-in",
+ pll_channel_pll_in_update, s);
+ s->out = qdev_init_clock_out(DEVICE(s), "out");
+}
+
+static const VMStateDescription pll_channel_vmstate = {
+ .name = TYPE_CPRMAN_PLL_CHANNEL,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_CLOCK(pll_in, CprmanPllChannelState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void pll_channel_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = pll_channel_reset;
+ dc->vmsd = &pll_channel_vmstate;
+}
+
+static const TypeInfo cprman_pll_channel_info = {
+ .name = TYPE_CPRMAN_PLL_CHANNEL,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(CprmanPllChannelState),
+ .class_init = pll_channel_class_init,
+ .instance_init = pll_channel_init,
+};
+
+
+/* clock mux */
+
+static bool clock_mux_is_enabled(CprmanClockMuxState *mux)
+{
+ return FIELD_EX32(*mux->reg_ctl, CM_CLOCKx_CTL, ENABLE);
+}
+
+static void clock_mux_update(CprmanClockMuxState *mux)
+{
+ uint64_t freq;
+ uint32_t div, src = FIELD_EX32(*mux->reg_ctl, CM_CLOCKx_CTL, SRC);
+ bool enabled = clock_mux_is_enabled(mux);
+
+ *mux->reg_ctl = FIELD_DP32(*mux->reg_ctl, CM_CLOCKx_CTL, BUSY, enabled);
+
+ if (!enabled) {
+ clock_update(mux->out, 0);
+ return;
+ }
+
+ freq = clock_get_hz(mux->srcs[src]);
+
+ if (mux->int_bits == 0 && mux->frac_bits == 0) {
+ clock_update_hz(mux->out, freq);
+ return;
+ }
+
+ /*
+ * The divider has an integer and a fractional part. The size of each part
+ * varies with the muxes (int_bits and frac_bits). Both parts are
+ * concatenated, with the integer part always starting at bit 12.
+ *
+ * 31 12 11 0
+ * ------------------------------
+ * CM_DIV | | int | frac | |
+ * ------------------------------
+ * <-----> <------>
+ * int_bits frac_bits
+ */
+ div = extract32(*mux->reg_div,
+ R_CM_CLOCKx_DIV_FRAC_LENGTH - mux->frac_bits,
+ mux->int_bits + mux->frac_bits);
+
+ if (!div) {
+ clock_update(mux->out, 0);
+ return;
+ }
+
+ freq = muldiv64(freq, 1 << mux->frac_bits, div);
+
+ clock_update_hz(mux->out, freq);
+}
+
+static void clock_mux_src_update(void *opaque)
+{
+ CprmanClockMuxState **backref = opaque;
+ CprmanClockMuxState *s = *backref;
+ CprmanClockMuxSource src = backref - s->backref;
+
+ if (FIELD_EX32(*s->reg_ctl, CM_CLOCKx_CTL, SRC) != src) {
+ return;
+ }
+
+ clock_mux_update(s);
+}
+
+static void clock_mux_reset(DeviceState *dev)
+{
+ CprmanClockMuxState *clock = CPRMAN_CLOCK_MUX(dev);
+ const ClockMuxResetInfo *info = &CLOCK_MUX_RESET_INFO[clock->id];
+
+ *clock->reg_ctl = info->cm_ctl;
+ *clock->reg_div = info->cm_div;
+}
+
+static void clock_mux_init(Object *obj)
+{
+ CprmanClockMuxState *s = CPRMAN_CLOCK_MUX(obj);
+ size_t i;
+
+ for (i = 0; i < CPRMAN_NUM_CLOCK_MUX_SRC; i++) {
+ char *name = g_strdup_printf("srcs[%zu]", i);
+ s->backref[i] = s;
+ s->srcs[i] = qdev_init_clock_in(DEVICE(s), name,
+ clock_mux_src_update,
+ &s->backref[i]);
+ g_free(name);
+ }
+
+ s->out = qdev_init_clock_out(DEVICE(s), "out");
+}
+
+static const VMStateDescription clock_mux_vmstate = {
+ .name = TYPE_CPRMAN_CLOCK_MUX,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_ARRAY_CLOCK(srcs, CprmanClockMuxState,
+ CPRMAN_NUM_CLOCK_MUX_SRC),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void clock_mux_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = clock_mux_reset;
+ dc->vmsd = &clock_mux_vmstate;
+}
+
+static const TypeInfo cprman_clock_mux_info = {
+ .name = TYPE_CPRMAN_CLOCK_MUX,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(CprmanClockMuxState),
+ .class_init = clock_mux_class_init,
+ .instance_init = clock_mux_init,
+};
+
+
+/* DSI0HSCK mux */
+
+static void dsi0hsck_mux_update(CprmanDsi0HsckMuxState *s)
+{
+ bool src_is_plld = FIELD_EX32(*s->reg_cm, CM_DSI0HSCK, SELPLLD);
+ Clock *src = src_is_plld ? s->plld_in : s->plla_in;
+
+ clock_update(s->out, clock_get(src));
+}
+
+static void dsi0hsck_mux_in_update(void *opaque)
+{
+ dsi0hsck_mux_update(CPRMAN_DSI0HSCK_MUX(opaque));
+}
+
+static void dsi0hsck_mux_init(Object *obj)
+{
+ CprmanDsi0HsckMuxState *s = CPRMAN_DSI0HSCK_MUX(obj);
+ DeviceState *dev = DEVICE(obj);
+
+ s->plla_in = qdev_init_clock_in(dev, "plla-in", dsi0hsck_mux_in_update, s);
+ s->plld_in = qdev_init_clock_in(dev, "plld-in", dsi0hsck_mux_in_update, s);
+ s->out = qdev_init_clock_out(DEVICE(s), "out");
+}
+
+static const VMStateDescription dsi0hsck_mux_vmstate = {
+ .name = TYPE_CPRMAN_DSI0HSCK_MUX,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_CLOCK(plla_in, CprmanDsi0HsckMuxState),
+ VMSTATE_CLOCK(plld_in, CprmanDsi0HsckMuxState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void dsi0hsck_mux_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->vmsd = &dsi0hsck_mux_vmstate;
+}
+
+static const TypeInfo cprman_dsi0hsck_mux_info = {
+ .name = TYPE_CPRMAN_DSI0HSCK_MUX,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(CprmanDsi0HsckMuxState),
+ .class_init = dsi0hsck_mux_class_init,
+ .instance_init = dsi0hsck_mux_init,
+};
+
+
+/* CPRMAN "top level" model */
+
+static uint32_t get_cm_lock(const BCM2835CprmanState *s)
+{
+ static const int CM_LOCK_MAPPING[CPRMAN_NUM_PLL] = {
+ [CPRMAN_PLLA] = R_CM_LOCK_FLOCKA_SHIFT,
+ [CPRMAN_PLLC] = R_CM_LOCK_FLOCKC_SHIFT,
+ [CPRMAN_PLLD] = R_CM_LOCK_FLOCKD_SHIFT,
+ [CPRMAN_PLLH] = R_CM_LOCK_FLOCKH_SHIFT,
+ [CPRMAN_PLLB] = R_CM_LOCK_FLOCKB_SHIFT,
+ };
+
+ uint32_t r = 0;
+ size_t i;
+
+ for (i = 0; i < CPRMAN_NUM_PLL; i++) {
+ r |= pll_is_locked(&s->plls[i]) << CM_LOCK_MAPPING[i];
+ }
+
+ return r;
+}
+
+static uint64_t cprman_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ BCM2835CprmanState *s = CPRMAN(opaque);
+ uint64_t r = 0;
+ size_t idx = offset / sizeof(uint32_t);
+
+ switch (idx) {
+ case R_CM_LOCK:
+ r = get_cm_lock(s);
+ break;
+
+ default:
+ r = s->regs[idx];
+ }
+
+ trace_bcm2835_cprman_read(offset, r);
+ return r;
+}
+
+static inline void update_pll_and_channels_from_cm(BCM2835CprmanState *s,
+ size_t idx)
+{
+ size_t i;
+
+ for (i = 0; i < CPRMAN_NUM_PLL; i++) {
+ if (PLL_INIT_INFO[i].cm_offset == idx) {
+ pll_update_all_channels(s, &s->plls[i]);
+ return;
+ }
+ }
+}
+
+static inline void update_channel_from_a2w(BCM2835CprmanState *s, size_t idx)
+{
+ size_t i;
+
+ for (i = 0; i < CPRMAN_NUM_PLL_CHANNEL; i++) {
+ if (PLL_CHANNEL_INIT_INFO[i].a2w_ctrl_offset == idx) {
+ pll_channel_update(&s->channels[i]);
+ return;
+ }
+ }
+}
+
+static inline void update_mux_from_cm(BCM2835CprmanState *s, size_t idx)
+{
+ size_t i;
+
+ for (i = 0; i < CPRMAN_NUM_CLOCK_MUX; i++) {
+ if ((CLOCK_MUX_INIT_INFO[i].cm_offset == idx) ||
+ (CLOCK_MUX_INIT_INFO[i].cm_offset + 4 == idx)) {
+ /* matches CM_CTL or CM_DIV mux register */
+ clock_mux_update(&s->clock_muxes[i]);
+ return;
+ }
+ }
+}
+
+#define CASE_PLL_A2W_REGS(pll_) \
+ case R_A2W_ ## pll_ ## _CTRL: \
+ case R_A2W_ ## pll_ ## _ANA0: \
+ case R_A2W_ ## pll_ ## _ANA1: \
+ case R_A2W_ ## pll_ ## _ANA2: \
+ case R_A2W_ ## pll_ ## _ANA3: \
+ case R_A2W_ ## pll_ ## _FRAC
+
+static void cprman_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+ BCM2835CprmanState *s = CPRMAN(opaque);
+ size_t idx = offset / sizeof(uint32_t);
+
+ if (FIELD_EX32(value, CPRMAN, PASSWORD) != CPRMAN_PASSWORD) {
+ trace_bcm2835_cprman_write_invalid_magic(offset, value);
+ return;
+ }
+
+ value &= ~R_CPRMAN_PASSWORD_MASK;
+
+ trace_bcm2835_cprman_write(offset, value);
+ s->regs[idx] = value;
+
+ switch (idx) {
+ case R_CM_PLLA ... R_CM_PLLH:
+ case R_CM_PLLB:
+ /*
+ * A given CM_PLLx register is shared by both the PLL and the channels
+ * of this PLL.
+ */
+ update_pll_and_channels_from_cm(s, idx);
+ break;
+
+ CASE_PLL_A2W_REGS(PLLA) :
+ pll_update(&s->plls[CPRMAN_PLLA]);
+ break;
+
+ CASE_PLL_A2W_REGS(PLLC) :
+ pll_update(&s->plls[CPRMAN_PLLC]);
+ break;
+
+ CASE_PLL_A2W_REGS(PLLD) :
+ pll_update(&s->plls[CPRMAN_PLLD]);
+ break;
+
+ CASE_PLL_A2W_REGS(PLLH) :
+ pll_update(&s->plls[CPRMAN_PLLH]);
+ break;
+
+ CASE_PLL_A2W_REGS(PLLB) :
+ pll_update(&s->plls[CPRMAN_PLLB]);
+ break;
+
+ case R_A2W_PLLA_DSI0:
+ case R_A2W_PLLA_CORE:
+ case R_A2W_PLLA_PER:
+ case R_A2W_PLLA_CCP2:
+ case R_A2W_PLLC_CORE2:
+ case R_A2W_PLLC_CORE1:
+ case R_A2W_PLLC_PER:
+ case R_A2W_PLLC_CORE0:
+ case R_A2W_PLLD_DSI0:
+ case R_A2W_PLLD_CORE:
+ case R_A2W_PLLD_PER:
+ case R_A2W_PLLD_DSI1:
+ case R_A2W_PLLH_AUX:
+ case R_A2W_PLLH_RCAL:
+ case R_A2W_PLLH_PIX:
+ case R_A2W_PLLB_ARM:
+ update_channel_from_a2w(s, idx);
+ break;
+
+ case R_CM_GNRICCTL ... R_CM_SMIDIV:
+ case R_CM_TCNTCNT ... R_CM_VECDIV:
+ case R_CM_PULSECTL ... R_CM_PULSEDIV:
+ case R_CM_SDCCTL ... R_CM_ARMCTL:
+ case R_CM_AVEOCTL ... R_CM_EMMCDIV:
+ case R_CM_EMMC2CTL ... R_CM_EMMC2DIV:
+ update_mux_from_cm(s, idx);
+ break;
+
+ case R_CM_DSI0HSCK:
+ dsi0hsck_mux_update(&s->dsi0hsck_mux);
+ break;
+ }
+}
+
+#undef CASE_PLL_A2W_REGS
+
+static const MemoryRegionOps cprman_ops = {
+ .read = cprman_read,
+ .write = cprman_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid = {
+ /*
+ * Although this hasn't been checked against real hardware, nor the
+ * information can be found in a datasheet, it seems reasonable because
+ * of the "PASSWORD" magic value found in every registers.
+ */
+ .min_access_size = 4,
+ .max_access_size = 4,
+ .unaligned = false,
+ },
+ .impl = {
+ .max_access_size = 4,
+ },
+};
+
+static void cprman_reset(DeviceState *dev)
+{
+ BCM2835CprmanState *s = CPRMAN(dev);
+ size_t i;
+
+ memset(s->regs, 0, sizeof(s->regs));
+
+ for (i = 0; i < CPRMAN_NUM_PLL; i++) {
+ device_cold_reset(DEVICE(&s->plls[i]));
+ }
+
+ for (i = 0; i < CPRMAN_NUM_PLL_CHANNEL; i++) {
+ device_cold_reset(DEVICE(&s->channels[i]));
+ }
+
+ device_cold_reset(DEVICE(&s->dsi0hsck_mux));
+
+ for (i = 0; i < CPRMAN_NUM_CLOCK_MUX; i++) {
+ device_cold_reset(DEVICE(&s->clock_muxes[i]));
+ }
+
+ clock_update_hz(s->xosc, s->xosc_freq);
+}
+
+static void cprman_init(Object *obj)
+{
+ BCM2835CprmanState *s = CPRMAN(obj);
+ size_t i;
+
+ for (i = 0; i < CPRMAN_NUM_PLL; i++) {
+ object_initialize_child(obj, PLL_INIT_INFO[i].name,
+ &s->plls[i], TYPE_CPRMAN_PLL);
+ set_pll_init_info(s, &s->plls[i], i);
+ }
+
+ for (i = 0; i < CPRMAN_NUM_PLL_CHANNEL; i++) {
+ object_initialize_child(obj, PLL_CHANNEL_INIT_INFO[i].name,
+ &s->channels[i],
+ TYPE_CPRMAN_PLL_CHANNEL);
+ set_pll_channel_init_info(s, &s->channels[i], i);
+ }
+
+ object_initialize_child(obj, "dsi0hsck-mux",
+ &s->dsi0hsck_mux, TYPE_CPRMAN_DSI0HSCK_MUX);
+ s->dsi0hsck_mux.reg_cm = &s->regs[R_CM_DSI0HSCK];
+
+ for (i = 0; i < CPRMAN_NUM_CLOCK_MUX; i++) {
+ char *alias;
+
+ object_initialize_child(obj, CLOCK_MUX_INIT_INFO[i].name,
+ &s->clock_muxes[i],
+ TYPE_CPRMAN_CLOCK_MUX);
+ set_clock_mux_init_info(s, &s->clock_muxes[i], i);
+
+ /* Expose muxes output as CPRMAN outputs */
+ alias = g_strdup_printf("%s-out", CLOCK_MUX_INIT_INFO[i].name);
+ qdev_alias_clock(DEVICE(&s->clock_muxes[i]), "out", DEVICE(obj), alias);
+ g_free(alias);
+ }
+
+ s->xosc = clock_new(obj, "xosc");
+ s->gnd = clock_new(obj, "gnd");
+
+ clock_set(s->gnd, 0);
+
+ memory_region_init_io(&s->iomem, obj, &cprman_ops,
+ s, "bcm2835-cprman", 0x2000);
+ sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->iomem);
+}
+
+static void connect_mux_sources(BCM2835CprmanState *s,
+ CprmanClockMuxState *mux,
+ const CprmanPllChannel *clk_mapping)
+{
+ size_t i;
+ Clock *td0 = s->clock_muxes[CPRMAN_CLOCK_TD0].out;
+ Clock *td1 = s->clock_muxes[CPRMAN_CLOCK_TD1].out;
+
+ /* For sources from 0 to 3. Source 4 to 9 are mux specific */
+ Clock * const CLK_SRC_MAPPING[] = {
+ [CPRMAN_CLOCK_SRC_GND] = s->gnd,
+ [CPRMAN_CLOCK_SRC_XOSC] = s->xosc,
+ [CPRMAN_CLOCK_SRC_TD0] = td0,
+ [CPRMAN_CLOCK_SRC_TD1] = td1,
+ };
+
+ for (i = 0; i < CPRMAN_NUM_CLOCK_MUX_SRC; i++) {
+ CprmanPllChannel mapping = clk_mapping[i];
+ Clock *src;
+
+ if (mapping == CPRMAN_CLOCK_SRC_FORCE_GROUND) {
+ src = s->gnd;
+ } else if (mapping == CPRMAN_CLOCK_SRC_DSI0HSCK) {
+ src = s->dsi0hsck_mux.out;
+ } else if (i < CPRMAN_CLOCK_SRC_PLLA) {
+ src = CLK_SRC_MAPPING[i];
+ } else {
+ src = s->channels[mapping].out;
+ }
+
+ clock_set_source(mux->srcs[i], src);
+ }
+}
+
+static void cprman_realize(DeviceState *dev, Error **errp)
+{
+ BCM2835CprmanState *s = CPRMAN(dev);
+ size_t i;
+
+ for (i = 0; i < CPRMAN_NUM_PLL; i++) {
+ CprmanPllState *pll = &s->plls[i];
+
+ clock_set_source(pll->xosc_in, s->xosc);
+
+ if (!qdev_realize(DEVICE(pll), NULL, errp)) {
+ return;
+ }
+ }
+
+ for (i = 0; i < CPRMAN_NUM_PLL_CHANNEL; i++) {
+ CprmanPllChannelState *channel = &s->channels[i];
+ CprmanPll parent = PLL_CHANNEL_INIT_INFO[i].parent;
+ Clock *parent_clk = s->plls[parent].out;
+
+ clock_set_source(channel->pll_in, parent_clk);
+
+ if (!qdev_realize(DEVICE(channel), NULL, errp)) {
+ return;
+ }
+ }
+
+ clock_set_source(s->dsi0hsck_mux.plla_in,
+ s->channels[CPRMAN_PLLA_CHANNEL_DSI0].out);
+ clock_set_source(s->dsi0hsck_mux.plld_in,
+ s->channels[CPRMAN_PLLD_CHANNEL_DSI0].out);
+
+ if (!qdev_realize(DEVICE(&s->dsi0hsck_mux), NULL, errp)) {
+ return;
+ }
+
+ for (i = 0; i < CPRMAN_NUM_CLOCK_MUX; i++) {
+ CprmanClockMuxState *clock_mux = &s->clock_muxes[i];
+
+ connect_mux_sources(s, clock_mux, CLOCK_MUX_INIT_INFO[i].src_mapping);
+
+ if (!qdev_realize(DEVICE(clock_mux), NULL, errp)) {
+ return;
+ }
+ }
+}
+
+static const VMStateDescription cprman_vmstate = {
+ .name = TYPE_BCM2835_CPRMAN,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32_ARRAY(regs, BCM2835CprmanState, CPRMAN_NUM_REGS),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static Property cprman_properties[] = {
+ DEFINE_PROP_UINT32("xosc-freq-hz", BCM2835CprmanState, xosc_freq, 19200000),
+ DEFINE_PROP_END_OF_LIST()
+};
+
+static void cprman_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = cprman_realize;
+ dc->reset = cprman_reset;
+ dc->vmsd = &cprman_vmstate;
+ device_class_set_props(dc, cprman_properties);
+}
+
+static const TypeInfo cprman_info = {
+ .name = TYPE_BCM2835_CPRMAN,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(BCM2835CprmanState),
+ .class_init = cprman_class_init,
+ .instance_init = cprman_init,
+};
+
+static void cprman_register_types(void)
+{
+ type_register_static(&cprman_info);
+ type_register_static(&cprman_pll_info);
+ type_register_static(&cprman_pll_channel_info);
+ type_register_static(&cprman_clock_mux_info);
+ type_register_static(&cprman_dsi0hsck_mux_info);
+}
+
+type_init(cprman_register_types);
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index aa8ec3bca9..4a06cbabef 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -60,6 +60,7 @@ softmmu_ss.add(when: 'CONFIG_MAINSTONE', if_true: files('mst_fpga.c'))
softmmu_ss.add(when: 'CONFIG_NPCM7XX', if_true: files(
'npcm7xx_clk.c',
'npcm7xx_gcr.c',
+ 'npcm7xx_rng.c',
))
softmmu_ss.add(when: 'CONFIG_OMAP', if_true: files(
'omap_clk.c',
@@ -74,6 +75,7 @@ softmmu_ss.add(when: 'CONFIG_RASPI', if_true: files(
'bcm2835_property.c',
'bcm2835_rng.c',
'bcm2835_thermal.c',
+ 'bcm2835_cprman.c',
))
softmmu_ss.add(when: 'CONFIG_SLAVIO', if_true: files('slavio_misc.c'))
softmmu_ss.add(when: 'CONFIG_ZYNQ', if_true: files('zynq_slcr.c', 'zynq-xadc.c'))
diff --git a/hw/misc/npcm7xx_clk.c b/hw/misc/npcm7xx_clk.c
index 21ab4200d1..6732437fe2 100644
--- a/hw/misc/npcm7xx_clk.c
+++ b/hw/misc/npcm7xx_clk.c
@@ -17,6 +17,7 @@
#include "qemu/osdep.h"
#include "hw/misc/npcm7xx_clk.h"
+#include "hw/timer/npcm7xx_timer.h"
#include "migration/vmstate.h"
#include "qemu/error-report.h"
#include "qemu/log.h"
@@ -24,6 +25,7 @@
#include "qemu/timer.h"
#include "qemu/units.h"
#include "trace.h"
+#include "sysemu/watchdog.h"
#define PLLCON_LOKI BIT(31)
#define PLLCON_LOKS BIT(30)
@@ -87,6 +89,12 @@ static const uint32_t cold_reset_values[NPCM7XX_CLK_NR_REGS] = {
[NPCM7XX_CLK_AHBCKFI] = 0x000000c8,
};
+/* Register Field Definitions */
+#define NPCM7XX_CLK_WDRCR_CA9C BIT(0) /* Cortex A9 Cores */
+
+/* The number of watchdogs that can trigger a reset. */
+#define NPCM7XX_NR_WATCHDOGS (3)
+
static uint64_t npcm7xx_clk_read(void *opaque, hwaddr offset, unsigned size)
{
uint32_t reg = offset / sizeof(uint32_t);
@@ -187,6 +195,24 @@ static void npcm7xx_clk_write(void *opaque, hwaddr offset,
s->regs[reg] = value;
}
+/* Perform reset action triggered by a watchdog */
+static void npcm7xx_clk_perform_watchdog_reset(void *opaque, int n,
+ int level)
+{
+ NPCM7xxCLKState *clk = NPCM7XX_CLK(opaque);
+ uint32_t rcr;
+
+ g_assert(n >= 0 && n <= NPCM7XX_NR_WATCHDOGS);
+ rcr = clk->regs[NPCM7XX_CLK_WD0RCR + n];
+ if (rcr & NPCM7XX_CLK_WDRCR_CA9C) {
+ watchdog_perform_action();
+ } else {
+ qemu_log_mask(LOG_UNIMP,
+ "%s: only CPU reset is implemented. (requested 0x%" PRIx32")\n",
+ __func__, rcr);
+ }
+}
+
static const struct MemoryRegionOps npcm7xx_clk_ops = {
.read = npcm7xx_clk_read,
.write = npcm7xx_clk_write,
@@ -226,6 +252,8 @@ static void npcm7xx_clk_init(Object *obj)
memory_region_init_io(&s->iomem, obj, &npcm7xx_clk_ops, s,
TYPE_NPCM7XX_CLK, 4 * KiB);
sysbus_init_mmio(&s->parent, &s->iomem);
+ qdev_init_gpio_in_named(DEVICE(s), npcm7xx_clk_perform_watchdog_reset,
+ NPCM7XX_WATCHDOG_RESET_GPIO_IN, NPCM7XX_NR_WATCHDOGS);
}
static const VMStateDescription vmstate_npcm7xx_clk = {
diff --git a/hw/misc/npcm7xx_rng.c b/hw/misc/npcm7xx_rng.c
new file mode 100644
index 0000000000..f650f3401f
--- /dev/null
+++ b/hw/misc/npcm7xx_rng.c
@@ -0,0 +1,180 @@
+/*
+ * Nuvoton NPCM7xx Random Number Generator.
+ *
+ * Copyright 2020 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include "qemu/osdep.h"
+
+#include "hw/misc/npcm7xx_rng.h"
+#include "migration/vmstate.h"
+#include "qemu/bitops.h"
+#include "qemu/guest-random.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "qemu/units.h"
+
+#include "trace.h"
+
+#define NPCM7XX_RNG_REGS_SIZE (4 * KiB)
+
+#define NPCM7XX_RNGCS (0x00)
+#define NPCM7XX_RNGCS_CLKP(rv) extract32(rv, 2, 4)
+#define NPCM7XX_RNGCS_DVALID BIT(1)
+#define NPCM7XX_RNGCS_RNGE BIT(0)
+
+#define NPCM7XX_RNGD (0x04)
+#define NPCM7XX_RNGMODE (0x08)
+#define NPCM7XX_RNGMODE_NORMAL (0x02)
+
+static bool npcm7xx_rng_is_enabled(NPCM7xxRNGState *s)
+{
+ return (s->rngcs & NPCM7XX_RNGCS_RNGE) &&
+ (s->rngmode == NPCM7XX_RNGMODE_NORMAL);
+}
+
+static uint64_t npcm7xx_rng_read(void *opaque, hwaddr offset, unsigned size)
+{
+ NPCM7xxRNGState *s = opaque;
+ uint64_t value = 0;
+
+ switch (offset) {
+ case NPCM7XX_RNGCS:
+ /*
+ * If the RNG is enabled, but we don't have any valid random data, try
+ * obtaining some and update the DVALID bit accordingly.
+ */
+ if (!npcm7xx_rng_is_enabled(s)) {
+ s->rngcs &= ~NPCM7XX_RNGCS_DVALID;
+ } else if (!(s->rngcs & NPCM7XX_RNGCS_DVALID)) {
+ uint8_t byte = 0;
+
+ if (qemu_guest_getrandom(&byte, sizeof(byte), NULL) == 0) {
+ s->rngd = byte;
+ s->rngcs |= NPCM7XX_RNGCS_DVALID;
+ }
+ }
+ value = s->rngcs;
+ break;
+ case NPCM7XX_RNGD:
+ if (npcm7xx_rng_is_enabled(s) && s->rngcs & NPCM7XX_RNGCS_DVALID) {
+ s->rngcs &= ~NPCM7XX_RNGCS_DVALID;
+ value = s->rngd;
+ s->rngd = 0;
+ }
+ break;
+ case NPCM7XX_RNGMODE:
+ value = s->rngmode;
+ break;
+
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: read from invalid offset 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, offset);
+ break;
+ }
+
+ trace_npcm7xx_rng_read(offset, value, size);
+
+ return value;
+}
+
+static void npcm7xx_rng_write(void *opaque, hwaddr offset, uint64_t value,
+ unsigned size)
+{
+ NPCM7xxRNGState *s = opaque;
+
+ trace_npcm7xx_rng_write(offset, value, size);
+
+ switch (offset) {
+ case NPCM7XX_RNGCS:
+ s->rngcs &= NPCM7XX_RNGCS_DVALID;
+ s->rngcs |= value & ~NPCM7XX_RNGCS_DVALID;
+ break;
+ case NPCM7XX_RNGD:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: write to read-only register @ 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, offset);
+ break;
+ case NPCM7XX_RNGMODE:
+ s->rngmode = value;
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: write to invalid offset 0x%" HWADDR_PRIx "\n",
+ DEVICE(s)->canonical_path, offset);
+ break;
+ }
+}
+
+static const MemoryRegionOps npcm7xx_rng_ops = {
+ .read = npcm7xx_rng_read,
+ .write = npcm7xx_rng_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid = {
+ .min_access_size = 1,
+ .max_access_size = 4,
+ .unaligned = false,
+ },
+};
+
+static void npcm7xx_rng_enter_reset(Object *obj, ResetType type)
+{
+ NPCM7xxRNGState *s = NPCM7XX_RNG(obj);
+
+ s->rngcs = 0;
+ s->rngd = 0;
+ s->rngmode = 0;
+}
+
+static void npcm7xx_rng_init(Object *obj)
+{
+ NPCM7xxRNGState *s = NPCM7XX_RNG(obj);
+
+ memory_region_init_io(&s->iomem, obj, &npcm7xx_rng_ops, s, "regs",
+ NPCM7XX_RNG_REGS_SIZE);
+ sysbus_init_mmio(&s->parent, &s->iomem);
+}
+
+static const VMStateDescription vmstate_npcm7xx_rng = {
+ .name = "npcm7xx-rng",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(rngcs, NPCM7xxRNGState),
+ VMSTATE_UINT8(rngd, NPCM7xxRNGState),
+ VMSTATE_UINT8(rngmode, NPCM7xxRNGState),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static void npcm7xx_rng_class_init(ObjectClass *klass, void *data)
+{
+ ResettableClass *rc = RESETTABLE_CLASS(klass);
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->desc = "NPCM7xx Random Number Generator";
+ dc->vmsd = &vmstate_npcm7xx_rng;
+ rc->phases.enter = npcm7xx_rng_enter_reset;
+}
+
+static const TypeInfo npcm7xx_rng_types[] = {
+ {
+ .name = TYPE_NPCM7XX_RNG,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(NPCM7xxRNGState),
+ .class_init = npcm7xx_rng_class_init,
+ .instance_init = npcm7xx_rng_init,
+ },
+};
+DEFINE_TYPES(npcm7xx_rng_types);
diff --git a/hw/misc/trace-events b/hw/misc/trace-events
index c68811b670..b5118acd3f 100644
--- a/hw/misc/trace-events
+++ b/hw/misc/trace-events
@@ -116,6 +116,10 @@ npcm7xx_clk_write(uint64_t offset, uint32_t value) "offset: 0x%04" PRIx64 " valu
npcm7xx_gcr_read(uint64_t offset, uint32_t value) " offset: 0x%04" PRIx64 " value: 0x%08" PRIx32
npcm7xx_gcr_write(uint64_t offset, uint32_t value) "offset: 0x%04" PRIx64 " value: 0x%08" PRIx32
+# npcm7xx_rng.c
+npcm7xx_rng_read(uint64_t offset, uint64_t value, unsigned size) "offset: 0x%04" PRIx64 " value: 0x%02" PRIx64 " size: %u"
+npcm7xx_rng_write(uint64_t offset, uint64_t value, unsigned size) "offset: 0x%04" PRIx64 " value: 0x%02" PRIx64 " size: %u"
+
# stm32f4xx_syscfg.c
stm32f4xx_syscfg_set_irq(int gpio, int line, int level) "Interupt: GPIO: %d, Line: %d; Level: %d"
stm32f4xx_pulse_exti(int irq) "Pulse EXTI: %d"
@@ -228,3 +232,8 @@ led_change_intensity(const char *color, const char *desc, uint8_t old_intensity_
# pca9552.c
pca955x_gpio_status(const char *description, const char *buf) "%s GPIOs 0-15 [%s]"
pca955x_gpio_change(const char *description, unsigned id, unsigned prev_state, unsigned current_state) "%s GPIO id:%u status: %u -> %u"
+
+# bcm2835_cprman.c
+bcm2835_cprman_read(uint64_t offset, uint64_t value) "offset:0x%" PRIx64 " value:0x%" PRIx64
+bcm2835_cprman_write(uint64_t offset, uint64_t value) "offset:0x%" PRIx64 " value:0x%" PRIx64
+bcm2835_cprman_write_invalid_magic(uint64_t offset, uint64_t value) "offset:0x%" PRIx64 " value:0x%" PRIx64
diff --git a/hw/timer/armv7m_systick.c b/hw/timer/armv7m_systick.c
index a8cec7eb56..2f192011eb 100644
--- a/hw/timer/armv7m_systick.c
+++ b/hw/timer/armv7m_systick.c
@@ -39,26 +39,6 @@ static inline int64_t systick_scale(SysTickState *s)
}
}
-static void systick_reload(SysTickState *s, int reset)
-{
- /* The Cortex-M3 Devices Generic User Guide says that "When the
- * ENABLE bit is set to 1, the counter loads the RELOAD value from the
- * SYST RVR register and then counts down". So, we need to check the
- * ENABLE bit before reloading the value.
- */
- trace_systick_reload();
-
- if ((s->control & SYSTICK_ENABLE) == 0) {
- return;
- }
-
- if (reset) {
- s->tick = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- }
- s->tick += (s->reload + 1) * systick_scale(s);
- timer_mod(s->timer, s->tick);
-}
-
static void systick_timer_tick(void *opaque)
{
SysTickState *s = (SysTickState *)opaque;
@@ -70,10 +50,12 @@ static void systick_timer_tick(void *opaque)
/* Tell the NVIC to pend the SysTick exception */
qemu_irq_pulse(s->irq);
}
- if (s->reload == 0) {
- s->control &= ~SYSTICK_ENABLE;
- } else {
- systick_reload(s, 0);
+ if (ptimer_get_limit(s->ptimer) == 0) {
+ /*
+ * Timer expiry with SYST_RVR zero disables the timer
+ * (but doesn't clear SYST_CSR.ENABLE)
+ */
+ ptimer_stop(s->ptimer);
}
}
@@ -94,30 +76,11 @@ static MemTxResult systick_read(void *opaque, hwaddr addr, uint64_t *data,
s->control &= ~SYSTICK_COUNTFLAG;
break;
case 0x4: /* SysTick Reload Value. */
- val = s->reload;
+ val = ptimer_get_limit(s->ptimer);
break;
case 0x8: /* SysTick Current Value. */
- {
- int64_t t;
-
- if ((s->control & SYSTICK_ENABLE) == 0) {
- val = 0;
- break;
- }
- t = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- if (t >= s->tick) {
- val = 0;
- break;
- }
- val = ((s->tick - (t + 1)) / systick_scale(s)) + 1;
- /* The interrupt in triggered when the timer reaches zero.
- However the counter is not reloaded until the next clock
- tick. This is a hack to return zero during the first tick. */
- if (val > s->reload) {
- val = 0;
- }
+ val = ptimer_get_count(s->ptimer);
break;
- }
case 0xc: /* SysTick Calibration Value. */
val = 10000;
break;
@@ -149,39 +112,50 @@ static MemTxResult systick_write(void *opaque, hwaddr addr,
switch (addr) {
case 0x0: /* SysTick Control and Status. */
{
- uint32_t oldval = s->control;
+ uint32_t oldval;
+ ptimer_transaction_begin(s->ptimer);
+ oldval = s->control;
s->control &= 0xfffffff8;
s->control |= value & 7;
+
if ((oldval ^ value) & SYSTICK_ENABLE) {
- int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
if (value & SYSTICK_ENABLE) {
- if (s->tick) {
- s->tick += now;
- timer_mod(s->timer, s->tick);
- } else {
- systick_reload(s, 1);
- }
+ /*
+ * Always reload the period in case board code has
+ * changed system_clock_scale. If we ever replace that
+ * global with a more sensible API then we might be able
+ * to set the period only when it actually changes.
+ */
+ ptimer_set_period(s->ptimer, systick_scale(s));
+ ptimer_run(s->ptimer, 0);
} else {
- timer_del(s->timer);
- s->tick -= now;
- if (s->tick < 0) {
- s->tick = 0;
- }
+ ptimer_stop(s->ptimer);
}
} else if ((oldval ^ value) & SYSTICK_CLKSOURCE) {
- /* This is a hack. Force the timer to be reloaded
- when the reference clock is changed. */
- systick_reload(s, 1);
+ ptimer_set_period(s->ptimer, systick_scale(s));
}
+ ptimer_transaction_commit(s->ptimer);
break;
}
case 0x4: /* SysTick Reload Value. */
- s->reload = value;
+ ptimer_transaction_begin(s->ptimer);
+ ptimer_set_limit(s->ptimer, value & 0xffffff, 0);
+ ptimer_transaction_commit(s->ptimer);
break;
- case 0x8: /* SysTick Current Value. Writes reload the timer. */
- systick_reload(s, 1);
+ case 0x8: /* SysTick Current Value. */
+ /*
+ * Writing any value clears SYST_CVR to zero and clears
+ * SYST_CSR.COUNTFLAG. The counter will then reload from SYST_RVR
+ * on the next clock edge unless SYST_RVR is zero.
+ */
+ ptimer_transaction_begin(s->ptimer);
+ if (ptimer_get_limit(s->ptimer) == 0) {
+ ptimer_stop(s->ptimer);
+ }
+ ptimer_set_count(s->ptimer, 0);
s->control &= ~SYSTICK_COUNTFLAG;
+ ptimer_transaction_commit(s->ptimer);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
@@ -210,10 +184,13 @@ static void systick_reset(DeviceState *dev)
*/
assert(system_clock_scale != 0);
+ ptimer_transaction_begin(s->ptimer);
s->control = 0;
- s->reload = 0;
- s->tick = 0;
- timer_del(s->timer);
+ ptimer_stop(s->ptimer);
+ ptimer_set_count(s->ptimer, 0);
+ ptimer_set_limit(s->ptimer, 0, 0);
+ ptimer_set_period(s->ptimer, systick_scale(s));
+ ptimer_transaction_commit(s->ptimer);
}
static void systick_instance_init(Object *obj)
@@ -229,18 +206,21 @@ static void systick_instance_init(Object *obj)
static void systick_realize(DeviceState *dev, Error **errp)
{
SysTickState *s = SYSTICK(dev);
- s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, systick_timer_tick, s);
+ s->ptimer = ptimer_init(systick_timer_tick, s,
+ PTIMER_POLICY_WRAP_AFTER_ONE_PERIOD |
+ PTIMER_POLICY_NO_COUNTER_ROUND_DOWN |
+ PTIMER_POLICY_NO_IMMEDIATE_RELOAD |
+ PTIMER_POLICY_TRIGGER_ONLY_ON_DECREMENT);
}
static const VMStateDescription vmstate_systick = {
.name = "armv7m_systick",
- .version_id = 1,
- .minimum_version_id = 1,
+ .version_id = 2,
+ .minimum_version_id = 2,
.fields = (VMStateField[]) {
VMSTATE_UINT32(control, SysTickState),
- VMSTATE_UINT32(reload, SysTickState),
VMSTATE_INT64(tick, SysTickState),
- VMSTATE_TIMER_PTR(timer, SysTickState),
+ VMSTATE_PTIMER(ptimer, SysTickState),
VMSTATE_END_OF_LIST()
}
};
diff --git a/hw/timer/npcm7xx_timer.c b/hw/timer/npcm7xx_timer.c
index 5703e43d40..d24445bd6e 100644
--- a/hw/timer/npcm7xx_timer.c
+++ b/hw/timer/npcm7xx_timer.c
@@ -17,6 +17,7 @@
#include "qemu/osdep.h"
#include "hw/irq.h"
+#include "hw/qdev-properties.h"
#include "hw/misc/npcm7xx_clk.h"
#include "hw/timer/npcm7xx_timer.h"
#include "migration/vmstate.h"
@@ -60,6 +61,50 @@ enum NPCM7xxTimerRegisters {
#define NPCM7XX_TCSR_PRESCALE_START 0
#define NPCM7XX_TCSR_PRESCALE_LEN 8
+#define NPCM7XX_WTCR_WTCLK(rv) extract32(rv, 10, 2)
+#define NPCM7XX_WTCR_FREEZE_EN BIT(9)
+#define NPCM7XX_WTCR_WTE BIT(7)
+#define NPCM7XX_WTCR_WTIE BIT(6)
+#define NPCM7XX_WTCR_WTIS(rv) extract32(rv, 4, 2)
+#define NPCM7XX_WTCR_WTIF BIT(3)
+#define NPCM7XX_WTCR_WTRF BIT(2)
+#define NPCM7XX_WTCR_WTRE BIT(1)
+#define NPCM7XX_WTCR_WTR BIT(0)
+
+/*
+ * The number of clock cycles between interrupt and reset in watchdog, used
+ * by the software to handle the interrupt before system is reset.
+ */
+#define NPCM7XX_WATCHDOG_INTERRUPT_TO_RESET_CYCLES 1024
+
+/* Start or resume the timer. */
+static void npcm7xx_timer_start(NPCM7xxBaseTimer *t)
+{
+ int64_t now;
+
+ now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ t->expires_ns = now + t->remaining_ns;
+ timer_mod(&t->qtimer, t->expires_ns);
+}
+
+/* Stop counting. Record the time remaining so we can continue later. */
+static void npcm7xx_timer_pause(NPCM7xxBaseTimer *t)
+{
+ int64_t now;
+
+ timer_del(&t->qtimer);
+ now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ t->remaining_ns = t->expires_ns - now;
+}
+
+/* Delete the timer and reset it to default state. */
+static void npcm7xx_timer_clear(NPCM7xxBaseTimer *t)
+{
+ timer_del(&t->qtimer);
+ t->expires_ns = 0;
+ t->remaining_ns = 0;
+}
+
/*
* Returns the index of timer in the tc->timer array. This can be used to
* locate the registers that belong to this timer.
@@ -102,6 +147,52 @@ static uint32_t npcm7xx_timer_ns_to_count(NPCM7xxTimer *t, int64_t ns)
return count;
}
+static uint32_t npcm7xx_watchdog_timer_prescaler(const NPCM7xxWatchdogTimer *t)
+{
+ switch (NPCM7XX_WTCR_WTCLK(t->wtcr)) {
+ case 0:
+ return 1;
+ case 1:
+ return 256;
+ case 2:
+ return 2048;
+ case 3:
+ return 65536;
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static void npcm7xx_watchdog_timer_reset_cycles(NPCM7xxWatchdogTimer *t,
+ int64_t cycles)
+{
+ uint32_t prescaler = npcm7xx_watchdog_timer_prescaler(t);
+ int64_t ns = (NANOSECONDS_PER_SECOND / NPCM7XX_TIMER_REF_HZ) * cycles;
+
+ /*
+ * The reset function always clears the current timer. The caller of the
+ * this needs to decide whether to start the watchdog timer based on
+ * specific flag in WTCR.
+ */
+ npcm7xx_timer_clear(&t->base_timer);
+
+ ns *= prescaler;
+ t->base_timer.remaining_ns = ns;
+}
+
+static void npcm7xx_watchdog_timer_reset(NPCM7xxWatchdogTimer *t)
+{
+ int64_t cycles = 1;
+ uint32_t s = NPCM7XX_WTCR_WTIS(t->wtcr);
+
+ g_assert(s <= 3);
+
+ cycles <<= NPCM7XX_WATCHDOG_BASETIME_SHIFT;
+ cycles <<= 2 * s;
+
+ npcm7xx_watchdog_timer_reset_cycles(t, cycles);
+}
+
/*
* Raise the interrupt line if there's a pending interrupt and interrupts are
* enabled for this timer. If not, lower it.
@@ -116,16 +207,6 @@ static void npcm7xx_timer_check_interrupt(NPCM7xxTimer *t)
trace_npcm7xx_timer_irq(DEVICE(tc)->canonical_path, index, pending);
}
-/* Start or resume the timer. */
-static void npcm7xx_timer_start(NPCM7xxTimer *t)
-{
- int64_t now;
-
- now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- t->expires_ns = now + t->remaining_ns;
- timer_mod(&t->qtimer, t->expires_ns);
-}
-
/*
* Called when the counter reaches zero. Sets the interrupt flag, and either
* restarts or disables the timer.
@@ -138,9 +219,9 @@ static void npcm7xx_timer_reached_zero(NPCM7xxTimer *t)
tc->tisr |= BIT(index);
if (t->tcsr & NPCM7XX_TCSR_PERIODIC) {
- t->remaining_ns = npcm7xx_timer_count_to_ns(t, t->ticr);
+ t->base_timer.remaining_ns = npcm7xx_timer_count_to_ns(t, t->ticr);
if (t->tcsr & NPCM7XX_TCSR_CEN) {
- npcm7xx_timer_start(t);
+ npcm7xx_timer_start(&t->base_timer);
}
} else {
t->tcsr &= ~(NPCM7XX_TCSR_CEN | NPCM7XX_TCSR_CACT);
@@ -149,18 +230,6 @@ static void npcm7xx_timer_reached_zero(NPCM7xxTimer *t)
npcm7xx_timer_check_interrupt(t);
}
-/* Stop counting. Record the time remaining so we can continue later. */
-static void npcm7xx_timer_pause(NPCM7xxTimer *t)
-{
- int64_t now;
-
- timer_del(&t->qtimer);
- now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- t->remaining_ns = t->expires_ns - now;
- if (t->remaining_ns <= 0) {
- npcm7xx_timer_reached_zero(t);
- }
-}
/*
* Restart the timer from its initial value. If the timer was enabled and stays
@@ -170,10 +239,10 @@ static void npcm7xx_timer_pause(NPCM7xxTimer *t)
*/
static void npcm7xx_timer_restart(NPCM7xxTimer *t, uint32_t old_tcsr)
{
- t->remaining_ns = npcm7xx_timer_count_to_ns(t, t->ticr);
+ t->base_timer.remaining_ns = npcm7xx_timer_count_to_ns(t, t->ticr);
if (old_tcsr & t->tcsr & NPCM7XX_TCSR_CEN) {
- npcm7xx_timer_start(t);
+ npcm7xx_timer_start(&t->base_timer);
}
}
@@ -184,10 +253,10 @@ static uint32_t npcm7xx_timer_read_tdr(NPCM7xxTimer *t)
if (t->tcsr & NPCM7XX_TCSR_CEN) {
int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- return npcm7xx_timer_ns_to_count(t, t->expires_ns - now);
+ return npcm7xx_timer_ns_to_count(t, t->base_timer.expires_ns - now);
}
- return npcm7xx_timer_ns_to_count(t, t->remaining_ns);
+ return npcm7xx_timer_ns_to_count(t, t->base_timer.remaining_ns);
}
static void npcm7xx_timer_write_tcsr(NPCM7xxTimer *t, uint32_t new_tcsr)
@@ -219,9 +288,9 @@ static void npcm7xx_timer_write_tcsr(NPCM7xxTimer *t, uint32_t new_tcsr)
if (npcm7xx_tcsr_prescaler(old_tcsr) != npcm7xx_tcsr_prescaler(new_tcsr)) {
/* Recalculate time remaining based on the current TDR value. */
- t->remaining_ns = npcm7xx_timer_count_to_ns(t, tdr);
+ t->base_timer.remaining_ns = npcm7xx_timer_count_to_ns(t, tdr);
if (old_tcsr & t->tcsr & NPCM7XX_TCSR_CEN) {
- npcm7xx_timer_start(t);
+ npcm7xx_timer_start(&t->base_timer);
}
}
@@ -235,10 +304,13 @@ static void npcm7xx_timer_write_tcsr(NPCM7xxTimer *t, uint32_t new_tcsr)
if ((old_tcsr ^ new_tcsr) & NPCM7XX_TCSR_CEN) {
if (new_tcsr & NPCM7XX_TCSR_CEN) {
t->tcsr |= NPCM7XX_TCSR_CACT;
- npcm7xx_timer_start(t);
+ npcm7xx_timer_start(&t->base_timer);
} else {
t->tcsr &= ~NPCM7XX_TCSR_CACT;
- npcm7xx_timer_pause(t);
+ npcm7xx_timer_pause(&t->base_timer);
+ if (t->base_timer.remaining_ns <= 0) {
+ npcm7xx_timer_reached_zero(t);
+ }
}
}
}
@@ -259,9 +331,47 @@ static void npcm7xx_timer_write_tisr(NPCM7xxTimerCtrlState *s, uint32_t value)
if (value & (1U << i)) {
npcm7xx_timer_check_interrupt(&s->timer[i]);
}
+
}
}
+static void npcm7xx_timer_write_wtcr(NPCM7xxWatchdogTimer *t, uint32_t new_wtcr)
+{
+ uint32_t old_wtcr = t->wtcr;
+
+ /*
+ * WTIF and WTRF are cleared by writing 1. Writing 0 makes these bits
+ * unchanged.
+ */
+ if (new_wtcr & NPCM7XX_WTCR_WTIF) {
+ new_wtcr &= ~NPCM7XX_WTCR_WTIF;
+ } else if (old_wtcr & NPCM7XX_WTCR_WTIF) {
+ new_wtcr |= NPCM7XX_WTCR_WTIF;
+ }
+ if (new_wtcr & NPCM7XX_WTCR_WTRF) {
+ new_wtcr &= ~NPCM7XX_WTCR_WTRF;
+ } else if (old_wtcr & NPCM7XX_WTCR_WTRF) {
+ new_wtcr |= NPCM7XX_WTCR_WTRF;
+ }
+
+ t->wtcr = new_wtcr;
+
+ if (new_wtcr & NPCM7XX_WTCR_WTR) {
+ t->wtcr &= ~NPCM7XX_WTCR_WTR;
+ npcm7xx_watchdog_timer_reset(t);
+ if (new_wtcr & NPCM7XX_WTCR_WTE) {
+ npcm7xx_timer_start(&t->base_timer);
+ }
+ } else if ((old_wtcr ^ new_wtcr) & NPCM7XX_WTCR_WTE) {
+ if (new_wtcr & NPCM7XX_WTCR_WTE) {
+ npcm7xx_timer_start(&t->base_timer);
+ } else {
+ npcm7xx_timer_pause(&t->base_timer);
+ }
+ }
+
+}
+
static hwaddr npcm7xx_tcsr_index(hwaddr reg)
{
switch (reg) {
@@ -353,7 +463,7 @@ static uint64_t npcm7xx_timer_read(void *opaque, hwaddr offset, unsigned size)
break;
case NPCM7XX_TIMER_WTCR:
- value = s->wtcr;
+ value = s->watchdog_timer.wtcr;
break;
default:
@@ -409,8 +519,7 @@ static void npcm7xx_timer_write(void *opaque, hwaddr offset,
return;
case NPCM7XX_TIMER_WTCR:
- qemu_log_mask(LOG_UNIMP, "%s: WTCR write not implemented: 0x%08x\n",
- __func__, value);
+ npcm7xx_timer_write_wtcr(&s->watchdog_timer, value);
return;
}
@@ -448,15 +557,42 @@ static void npcm7xx_timer_enter_reset(Object *obj, ResetType type)
for (i = 0; i < NPCM7XX_TIMERS_PER_CTRL; i++) {
NPCM7xxTimer *t = &s->timer[i];
- timer_del(&t->qtimer);
- t->expires_ns = 0;
- t->remaining_ns = 0;
+ npcm7xx_timer_clear(&t->base_timer);
t->tcsr = 0x00000005;
t->ticr = 0x00000000;
}
s->tisr = 0x00000000;
- s->wtcr = 0x00000400;
+ /*
+ * Set WTCLK to 1(default) and reset all flags except WTRF.
+ * WTRF is not reset during a core domain reset.
+ */
+ s->watchdog_timer.wtcr = 0x00000400 | (s->watchdog_timer.wtcr &
+ NPCM7XX_WTCR_WTRF);
+}
+
+static void npcm7xx_watchdog_timer_expired(void *opaque)
+{
+ NPCM7xxWatchdogTimer *t = opaque;
+
+ if (t->wtcr & NPCM7XX_WTCR_WTE) {
+ if (t->wtcr & NPCM7XX_WTCR_WTIF) {
+ if (t->wtcr & NPCM7XX_WTCR_WTRE) {
+ t->wtcr |= NPCM7XX_WTCR_WTRF;
+ /* send reset signal to CLK module*/
+ qemu_irq_raise(t->reset_signal);
+ }
+ } else {
+ t->wtcr |= NPCM7XX_WTCR_WTIF;
+ if (t->wtcr & NPCM7XX_WTCR_WTIE) {
+ /* send interrupt */
+ qemu_irq_raise(t->irq);
+ }
+ npcm7xx_watchdog_timer_reset_cycles(t,
+ NPCM7XX_WATCHDOG_INTERRUPT_TO_RESET_CYCLES);
+ npcm7xx_timer_start(&t->base_timer);
+ }
+ }
}
static void npcm7xx_timer_hold_reset(Object *obj)
@@ -467,6 +603,7 @@ static void npcm7xx_timer_hold_reset(Object *obj)
for (i = 0; i < NPCM7XX_TIMERS_PER_CTRL; i++) {
qemu_irq_lower(s->timer[i].irq);
}
+ qemu_irq_lower(s->watchdog_timer.irq);
}
static void npcm7xx_timer_realize(DeviceState *dev, Error **errp)
@@ -474,43 +611,80 @@ static void npcm7xx_timer_realize(DeviceState *dev, Error **errp)
NPCM7xxTimerCtrlState *s = NPCM7XX_TIMER(dev);
SysBusDevice *sbd = &s->parent;
int i;
+ NPCM7xxWatchdogTimer *w;
for (i = 0; i < NPCM7XX_TIMERS_PER_CTRL; i++) {
NPCM7xxTimer *t = &s->timer[i];
t->ctrl = s;
- timer_init_ns(&t->qtimer, QEMU_CLOCK_VIRTUAL, npcm7xx_timer_expired, t);
+ timer_init_ns(&t->base_timer.qtimer, QEMU_CLOCK_VIRTUAL,
+ npcm7xx_timer_expired, t);
sysbus_init_irq(sbd, &t->irq);
}
+ w = &s->watchdog_timer;
+ w->ctrl = s;
+ timer_init_ns(&w->base_timer.qtimer, QEMU_CLOCK_VIRTUAL,
+ npcm7xx_watchdog_timer_expired, w);
+ sysbus_init_irq(sbd, &w->irq);
+
memory_region_init_io(&s->iomem, OBJECT(s), &npcm7xx_timer_ops, s,
TYPE_NPCM7XX_TIMER, 4 * KiB);
sysbus_init_mmio(sbd, &s->iomem);
+ qdev_init_gpio_out_named(dev, &w->reset_signal,
+ NPCM7XX_WATCHDOG_RESET_GPIO_OUT, 1);
}
-static const VMStateDescription vmstate_npcm7xx_timer = {
- .name = "npcm7xx-timer",
+static const VMStateDescription vmstate_npcm7xx_base_timer = {
+ .name = "npcm7xx-base-timer",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
- VMSTATE_TIMER(qtimer, NPCM7xxTimer),
- VMSTATE_INT64(expires_ns, NPCM7xxTimer),
- VMSTATE_INT64(remaining_ns, NPCM7xxTimer),
+ VMSTATE_TIMER(qtimer, NPCM7xxBaseTimer),
+ VMSTATE_INT64(expires_ns, NPCM7xxBaseTimer),
+ VMSTATE_INT64(remaining_ns, NPCM7xxBaseTimer),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static const VMStateDescription vmstate_npcm7xx_timer = {
+ .name = "npcm7xx-timer",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_STRUCT(base_timer, NPCM7xxTimer,
+ 0, vmstate_npcm7xx_base_timer,
+ NPCM7xxBaseTimer),
VMSTATE_UINT32(tcsr, NPCM7xxTimer),
VMSTATE_UINT32(ticr, NPCM7xxTimer),
VMSTATE_END_OF_LIST(),
},
};
-static const VMStateDescription vmstate_npcm7xx_timer_ctrl = {
- .name = "npcm7xx-timer-ctrl",
+static const VMStateDescription vmstate_npcm7xx_watchdog_timer = {
+ .name = "npcm7xx-watchdog-timer",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
+ VMSTATE_STRUCT(base_timer, NPCM7xxWatchdogTimer,
+ 0, vmstate_npcm7xx_base_timer,
+ NPCM7xxBaseTimer),
+ VMSTATE_UINT32(wtcr, NPCM7xxWatchdogTimer),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static const VMStateDescription vmstate_npcm7xx_timer_ctrl = {
+ .name = "npcm7xx-timer-ctrl",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
VMSTATE_UINT32(tisr, NPCM7xxTimerCtrlState),
- VMSTATE_UINT32(wtcr, NPCM7xxTimerCtrlState),
VMSTATE_STRUCT_ARRAY(timer, NPCM7xxTimerCtrlState,
NPCM7XX_TIMERS_PER_CTRL, 0, vmstate_npcm7xx_timer,
NPCM7xxTimer),
+ VMSTATE_STRUCT(watchdog_timer, NPCM7xxTimerCtrlState,
+ 0, vmstate_npcm7xx_watchdog_timer,
+ NPCM7xxWatchdogTimer),
VMSTATE_END_OF_LIST(),
},
};
diff --git a/hw/usb/hcd-ehci-sysbus.c b/hw/usb/hcd-ehci-sysbus.c
index 3730736540..e3758db1b1 100644
--- a/hw/usb/hcd-ehci-sysbus.c
+++ b/hw/usb/hcd-ehci-sysbus.c
@@ -147,6 +147,24 @@ static const TypeInfo ehci_aw_h3_type_info = {
.class_init = ehci_aw_h3_class_init,
};
+static void ehci_npcm7xx_class_init(ObjectClass *oc, void *data)
+{
+ SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(oc);
+ DeviceClass *dc = DEVICE_CLASS(oc);
+
+ sec->capsbase = 0x0;
+ sec->opregbase = 0x10;
+ sec->portscbase = 0x44;
+ sec->portnr = 1;
+ set_bit(DEVICE_CATEGORY_USB, dc->categories);
+}
+
+static const TypeInfo ehci_npcm7xx_type_info = {
+ .name = TYPE_NPCM7XX_EHCI,
+ .parent = TYPE_SYS_BUS_EHCI,
+ .class_init = ehci_npcm7xx_class_init,
+};
+
static void ehci_tegra2_class_init(ObjectClass *oc, void *data)
{
SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(oc);
@@ -269,6 +287,7 @@ static void ehci_sysbus_register_types(void)
type_register_static(&ehci_platform_type_info);
type_register_static(&ehci_exynos4210_type_info);
type_register_static(&ehci_aw_h3_type_info);
+ type_register_static(&ehci_npcm7xx_type_info);
type_register_static(&ehci_tegra2_type_info);
type_register_static(&ehci_ppc4xx_type_info);
type_register_static(&ehci_fusbh200_type_info);
diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h
index fd122dd4cd..a173707d9b 100644
--- a/hw/usb/hcd-ehci.h
+++ b/hw/usb/hcd-ehci.h
@@ -344,6 +344,7 @@ struct EHCIPCIState {
#define TYPE_PLATFORM_EHCI "platform-ehci-usb"
#define TYPE_EXYNOS4210_EHCI "exynos4210-ehci-usb"
#define TYPE_AW_H3_EHCI "aw-h3-ehci-usb"
+#define TYPE_NPCM7XX_EHCI "npcm7xx-ehci-usb"
#define TYPE_TEGRA2_EHCI "tegra2-ehci-usb"
#define TYPE_PPC4xx_EHCI "ppc4xx-ehci-usb"
#define TYPE_FUSBH200_EHCI "fusbh200-ehci-usb"
diff --git a/hw/watchdog/Kconfig b/hw/watchdog/Kconfig
index 293209b291..66e1d029e3 100644
--- a/hw/watchdog/Kconfig
+++ b/hw/watchdog/Kconfig
@@ -17,3 +17,6 @@ config WDT_DIAG288
config WDT_IMX2
bool
+
+config WDT_SBSA
+ bool
diff --git a/hw/watchdog/meson.build b/hw/watchdog/meson.build
index 9b8725e642..054c403dea 100644
--- a/hw/watchdog/meson.build
+++ b/hw/watchdog/meson.build
@@ -5,3 +5,4 @@ softmmu_ss.add(when: 'CONFIG_WDT_IB700', if_true: files('wdt_ib700.c'))
softmmu_ss.add(when: 'CONFIG_WDT_DIAG288', if_true: files('wdt_diag288.c'))
softmmu_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files('wdt_aspeed.c'))
softmmu_ss.add(when: 'CONFIG_WDT_IMX2', if_true: files('wdt_imx2.c'))
+softmmu_ss.add(when: 'CONFIG_WDT_SBSA', if_true: files('sbsa_gwdt.c'))
diff --git a/hw/watchdog/sbsa_gwdt.c b/hw/watchdog/sbsa_gwdt.c
new file mode 100644
index 0000000000..d0998f8489
--- /dev/null
+++ b/hw/watchdog/sbsa_gwdt.c
@@ -0,0 +1,293 @@
+/*
+ * Generic watchdog device model for SBSA
+ *
+ * The watchdog device has been implemented as revision 1 variant of
+ * the ARM SBSA specification v6.0
+ * (https://developer.arm.com/documentation/den0029/d?lang=en)
+ *
+ * Copyright Linaro.org 2020
+ *
+ * Authors:
+ * Shashi Mallela <shashi.mallela@linaro.org>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at your
+ * option) any later version. See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "sysemu/reset.h"
+#include "sysemu/watchdog.h"
+#include "hw/watchdog/sbsa_gwdt.h"
+#include "qemu/timer.h"
+#include "migration/vmstate.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+
+static WatchdogTimerModel model = {
+ .wdt_name = TYPE_WDT_SBSA,
+ .wdt_description = "SBSA-compliant generic watchdog device",
+};
+
+static const VMStateDescription vmstate_sbsa_gwdt = {
+ .name = "sbsa-gwdt",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_TIMER_PTR(timer, SBSA_GWDTState),
+ VMSTATE_UINT32(wcs, SBSA_GWDTState),
+ VMSTATE_UINT32(worl, SBSA_GWDTState),
+ VMSTATE_UINT32(woru, SBSA_GWDTState),
+ VMSTATE_UINT32(wcvl, SBSA_GWDTState),
+ VMSTATE_UINT32(wcvu, SBSA_GWDTState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+typedef enum WdtRefreshType {
+ EXPLICIT_REFRESH = 0,
+ TIMEOUT_REFRESH = 1,
+} WdtRefreshType;
+
+static uint64_t sbsa_gwdt_rread(void *opaque, hwaddr addr, unsigned int size)
+{
+ SBSA_GWDTState *s = SBSA_GWDT(opaque);
+ uint32_t ret = 0;
+
+ switch (addr) {
+ case SBSA_GWDT_WRR:
+ /* watch refresh read has no effect and returns 0 */
+ ret = 0;
+ break;
+ case SBSA_GWDT_W_IIDR:
+ ret = s->id;
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR, "bad address in refresh frame read :"
+ " 0x%x\n", (int)addr);
+ }
+ return ret;
+}
+
+static uint64_t sbsa_gwdt_read(void *opaque, hwaddr addr, unsigned int size)
+{
+ SBSA_GWDTState *s = SBSA_GWDT(opaque);
+ uint32_t ret = 0;
+
+ switch (addr) {
+ case SBSA_GWDT_WCS:
+ ret = s->wcs;
+ break;
+ case SBSA_GWDT_WOR:
+ ret = s->worl;
+ break;
+ case SBSA_GWDT_WORU:
+ ret = s->woru;
+ break;
+ case SBSA_GWDT_WCV:
+ ret = s->wcvl;
+ break;
+ case SBSA_GWDT_WCVU:
+ ret = s->wcvu;
+ break;
+ case SBSA_GWDT_W_IIDR:
+ ret = s->id;
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR, "bad address in control frame read :"
+ " 0x%x\n", (int)addr);
+ }
+ return ret;
+}
+
+static void sbsa_gwdt_update_timer(SBSA_GWDTState *s, WdtRefreshType rtype)
+{
+ uint64_t timeout = 0;
+
+ timer_del(s->timer);
+
+ if (s->wcs & SBSA_GWDT_WCS_EN) {
+ /*
+ * Extract the upper 16 bits from woru & 32 bits from worl
+ * registers to construct the 48 bit offset value
+ */
+ timeout = s->woru;
+ timeout <<= 32;
+ timeout |= s->worl;
+ timeout = muldiv64(timeout, NANOSECONDS_PER_SECOND, SBSA_TIMER_FREQ);
+ timeout += qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+
+ if ((rtype == EXPLICIT_REFRESH) || ((rtype == TIMEOUT_REFRESH) &&
+ (!(s->wcs & SBSA_GWDT_WCS_WS0)))) {
+ /* store the current timeout value into compare registers */
+ s->wcvu = timeout >> 32;
+ s->wcvl = timeout;
+ }
+ timer_mod(s->timer, timeout);
+ }
+}
+
+static void sbsa_gwdt_rwrite(void *opaque, hwaddr offset, uint64_t data,
+ unsigned size) {
+ SBSA_GWDTState *s = SBSA_GWDT(opaque);
+
+ if (offset == SBSA_GWDT_WRR) {
+ s->wcs &= ~(SBSA_GWDT_WCS_WS0 | SBSA_GWDT_WCS_WS1);
+
+ sbsa_gwdt_update_timer(s, EXPLICIT_REFRESH);
+ } else {
+ qemu_log_mask(LOG_GUEST_ERROR, "bad address in refresh frame write :"
+ " 0x%x\n", (int)offset);
+ }
+}
+
+static void sbsa_gwdt_write(void *opaque, hwaddr offset, uint64_t data,
+ unsigned size) {
+ SBSA_GWDTState *s = SBSA_GWDT(opaque);
+
+ switch (offset) {
+ case SBSA_GWDT_WCS:
+ s->wcs = data & SBSA_GWDT_WCS_EN;
+ qemu_set_irq(s->irq, 0);
+ sbsa_gwdt_update_timer(s, EXPLICIT_REFRESH);
+ break;
+
+ case SBSA_GWDT_WOR:
+ s->worl = data;
+ s->wcs &= ~(SBSA_GWDT_WCS_WS0 | SBSA_GWDT_WCS_WS1);
+ qemu_set_irq(s->irq, 0);
+ sbsa_gwdt_update_timer(s, EXPLICIT_REFRESH);
+ break;
+
+ case SBSA_GWDT_WORU:
+ s->woru = data & SBSA_GWDT_WOR_MASK;
+ s->wcs &= ~(SBSA_GWDT_WCS_WS0 | SBSA_GWDT_WCS_WS1);
+ qemu_set_irq(s->irq, 0);
+ sbsa_gwdt_update_timer(s, EXPLICIT_REFRESH);
+ break;
+
+ case SBSA_GWDT_WCV:
+ s->wcvl = data;
+ break;
+
+ case SBSA_GWDT_WCVU:
+ s->wcvu = data;
+ break;
+
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR, "bad address in control frame write :"
+ " 0x%x\n", (int)offset);
+ }
+ return;
+}
+
+static void wdt_sbsa_gwdt_reset(DeviceState *dev)
+{
+ SBSA_GWDTState *s = SBSA_GWDT(dev);
+
+ timer_del(s->timer);
+
+ s->wcs = 0;
+ s->wcvl = 0;
+ s->wcvu = 0;
+ s->worl = 0;
+ s->woru = 0;
+ s->id = SBSA_GWDT_ID;
+}
+
+static void sbsa_gwdt_timer_sysinterrupt(void *opaque)
+{
+ SBSA_GWDTState *s = SBSA_GWDT(opaque);
+
+ if (!(s->wcs & SBSA_GWDT_WCS_WS0)) {
+ s->wcs |= SBSA_GWDT_WCS_WS0;
+ sbsa_gwdt_update_timer(s, TIMEOUT_REFRESH);
+ qemu_set_irq(s->irq, 1);
+ } else {
+ s->wcs |= SBSA_GWDT_WCS_WS1;
+ qemu_log_mask(CPU_LOG_RESET, "Watchdog timer expired.\n");
+ /*
+ * Reset the watchdog only if the guest gets notified about
+ * expiry. watchdog_perform_action() may temporarily relinquish
+ * the BQL; reset before triggering the action to avoid races with
+ * sbsa_gwdt instructions.
+ */
+ switch (get_watchdog_action()) {
+ case WATCHDOG_ACTION_DEBUG:
+ case WATCHDOG_ACTION_NONE:
+ case WATCHDOG_ACTION_PAUSE:
+ break;
+ default:
+ wdt_sbsa_gwdt_reset(DEVICE(s));
+ }
+ watchdog_perform_action();
+ }
+}
+
+static const MemoryRegionOps sbsa_gwdt_rops = {
+ .read = sbsa_gwdt_rread,
+ .write = sbsa_gwdt_rwrite,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid.min_access_size = 4,
+ .valid.max_access_size = 4,
+ .valid.unaligned = false,
+};
+
+static const MemoryRegionOps sbsa_gwdt_ops = {
+ .read = sbsa_gwdt_read,
+ .write = sbsa_gwdt_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid.min_access_size = 4,
+ .valid.max_access_size = 4,
+ .valid.unaligned = false,
+};
+
+static void wdt_sbsa_gwdt_realize(DeviceState *dev, Error **errp)
+{
+ SBSA_GWDTState *s = SBSA_GWDT(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+ memory_region_init_io(&s->rmmio, OBJECT(dev),
+ &sbsa_gwdt_rops, s,
+ "sbsa_gwdt.refresh",
+ SBSA_GWDT_RMMIO_SIZE);
+
+ memory_region_init_io(&s->cmmio, OBJECT(dev),
+ &sbsa_gwdt_ops, s,
+ "sbsa_gwdt.control",
+ SBSA_GWDT_CMMIO_SIZE);
+
+ sysbus_init_mmio(sbd, &s->rmmio);
+ sysbus_init_mmio(sbd, &s->cmmio);
+
+ sysbus_init_irq(sbd, &s->irq);
+
+ s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sbsa_gwdt_timer_sysinterrupt,
+ dev);
+}
+
+static void wdt_sbsa_gwdt_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = wdt_sbsa_gwdt_realize;
+ dc->reset = wdt_sbsa_gwdt_reset;
+ dc->hotpluggable = false;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ dc->vmsd = &vmstate_sbsa_gwdt;
+}
+
+static const TypeInfo wdt_sbsa_gwdt_info = {
+ .class_init = wdt_sbsa_gwdt_class_init,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .name = TYPE_WDT_SBSA,
+ .instance_size = sizeof(SBSA_GWDTState),
+};
+
+static void wdt_sbsa_gwdt_register_types(void)
+{
+ watchdog_add_model(&model);
+ type_register_static(&wdt_sbsa_gwdt_info);
+}
+
+type_init(wdt_sbsa_gwdt_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-26 15:45:24 +0000