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-rw-r--r--hw/arm/Kconfig1
-rw-r--r--hw/arm/allwinner-a10.c7
-rw-r--r--hw/misc/Kconfig3
-rw-r--r--hw/misc/allwinner-a10-dramc.c179
-rw-r--r--hw/misc/meson.build1
5 files changed, 191 insertions, 0 deletions
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 2be618fe8f..9ce756fca7 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -324,6 +324,7 @@ config ALLWINNER_A10
select ALLWINNER_A10_PIT
select ALLWINNER_A10_PIC
select ALLWINNER_A10_CCM
+ select ALLWINNER_A10_DRAMC
select ALLWINNER_EMAC
select SERIAL
select UNIMP
diff --git a/hw/arm/allwinner-a10.c b/hw/arm/allwinner-a10.c
index 86baeeeca2..a5f7a36ac9 100644
--- a/hw/arm/allwinner-a10.c
+++ b/hw/arm/allwinner-a10.c
@@ -25,6 +25,7 @@
#include "hw/boards.h"
#include "hw/usb/hcd-ohci.h"
+#define AW_A10_DRAMC_BASE 0x01c01000
#define AW_A10_MMC0_BASE 0x01c0f000
#define AW_A10_CCM_BASE 0x01c20000
#define AW_A10_PIC_REG_BASE 0x01c20400
@@ -49,6 +50,8 @@ static void aw_a10_init(Object *obj)
object_initialize_child(obj, "ccm", &s->ccm, TYPE_AW_A10_CCM);
+ object_initialize_child(obj, "dramc", &s->dramc, TYPE_AW_A10_DRAMC);
+
object_initialize_child(obj, "emac", &s->emac, TYPE_AW_EMAC);
object_initialize_child(obj, "sata", &s->sata, TYPE_ALLWINNER_AHCI);
@@ -110,6 +113,10 @@ static void aw_a10_realize(DeviceState *dev, Error **errp)
sysbus_realize(SYS_BUS_DEVICE(&s->ccm), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, AW_A10_CCM_BASE);
+ /* DRAM Control Module */
+ sysbus_realize(SYS_BUS_DEVICE(&s->dramc), &error_fatal);
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->dramc), 0, AW_A10_DRAMC_BASE);
+
/* FIXME use qdev NIC properties instead of nd_table[] */
if (nd_table[0].used) {
qemu_check_nic_model(&nd_table[0], TYPE_AW_EMAC);
diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index ed07bf4133..052fb54310 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -177,4 +177,7 @@ config LASI
config ALLWINNER_A10_CCM
bool
+config ALLWINNER_A10_DRAMC
+ bool
+
source macio/Kconfig
diff --git a/hw/misc/allwinner-a10-dramc.c b/hw/misc/allwinner-a10-dramc.c
new file mode 100644
index 0000000000..e118b0c2fd
--- /dev/null
+++ b/hw/misc/allwinner-a10-dramc.c
@@ -0,0 +1,179 @@
+/*
+ * Allwinner A10 DRAM Controller emulation
+ *
+ * Copyright (C) 2022 Strahinja Jankovic <strahinja.p.jankovic@gmail.com>
+ *
+ * This file is derived from Allwinner H3 DRAMC,
+ * by Niek Linnenbank.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "hw/sysbus.h"
+#include "migration/vmstate.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "hw/misc/allwinner-a10-dramc.h"
+
+/* DRAMC register offsets */
+enum {
+ REG_SDR_CCR = 0x0000,
+ REG_SDR_ZQCR0 = 0x00a8,
+ REG_SDR_ZQSR = 0x00b0
+};
+
+#define REG_INDEX(offset) (offset / sizeof(uint32_t))
+
+/* DRAMC register flags */
+enum {
+ REG_SDR_CCR_DATA_TRAINING = (1 << 30),
+ REG_SDR_CCR_DRAM_INIT = (1 << 31),
+};
+enum {
+ REG_SDR_ZQSR_ZCAL = (1 << 31),
+};
+
+/* DRAMC register reset values */
+enum {
+ REG_SDR_CCR_RESET = 0x80020000,
+ REG_SDR_ZQCR0_RESET = 0x07b00000,
+ REG_SDR_ZQSR_RESET = 0x80000000
+};
+
+static uint64_t allwinner_a10_dramc_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ const AwA10DramControllerState *s = AW_A10_DRAMC(opaque);
+ const uint32_t idx = REG_INDEX(offset);
+
+ switch (offset) {
+ case REG_SDR_CCR:
+ case REG_SDR_ZQCR0:
+ case REG_SDR_ZQSR:
+ break;
+ case 0x2e4 ... AW_A10_DRAMC_IOSIZE:
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: out-of-bounds offset 0x%04x\n",
+ __func__, (uint32_t)offset);
+ return 0;
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: unimplemented read offset 0x%04x\n",
+ __func__, (uint32_t)offset);
+ return 0;
+ }
+
+ return s->regs[idx];
+}
+
+static void allwinner_a10_dramc_write(void *opaque, hwaddr offset,
+ uint64_t val, unsigned size)
+{
+ AwA10DramControllerState *s = AW_A10_DRAMC(opaque);
+ const uint32_t idx = REG_INDEX(offset);
+
+ switch (offset) {
+ case REG_SDR_CCR:
+ if (val & REG_SDR_CCR_DRAM_INIT) {
+ /* Clear DRAM_INIT to indicate process is done. */
+ val &= ~REG_SDR_CCR_DRAM_INIT;
+ }
+ if (val & REG_SDR_CCR_DATA_TRAINING) {
+ /* Clear DATA_TRAINING to indicate process is done. */
+ val &= ~REG_SDR_CCR_DATA_TRAINING;
+ }
+ break;
+ case REG_SDR_ZQCR0:
+ /* Set ZCAL in ZQSR to indicate calibration is done. */
+ s->regs[REG_INDEX(REG_SDR_ZQSR)] |= REG_SDR_ZQSR_ZCAL;
+ break;
+ case 0x2e4 ... AW_A10_DRAMC_IOSIZE:
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: out-of-bounds offset 0x%04x\n",
+ __func__, (uint32_t)offset);
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: unimplemented write offset 0x%04x\n",
+ __func__, (uint32_t)offset);
+ break;
+ }
+
+ s->regs[idx] = (uint32_t) val;
+}
+
+static const MemoryRegionOps allwinner_a10_dramc_ops = {
+ .read = allwinner_a10_dramc_read,
+ .write = allwinner_a10_dramc_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+ .impl.min_access_size = 4,
+};
+
+static void allwinner_a10_dramc_reset_enter(Object *obj, ResetType type)
+{
+ AwA10DramControllerState *s = AW_A10_DRAMC(obj);
+
+ /* Set default values for registers */
+ s->regs[REG_INDEX(REG_SDR_CCR)] = REG_SDR_CCR_RESET;
+ s->regs[REG_INDEX(REG_SDR_ZQCR0)] = REG_SDR_ZQCR0_RESET;
+ s->regs[REG_INDEX(REG_SDR_ZQSR)] = REG_SDR_ZQSR_RESET;
+}
+
+static void allwinner_a10_dramc_init(Object *obj)
+{
+ SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+ AwA10DramControllerState *s = AW_A10_DRAMC(obj);
+
+ /* Memory mapping */
+ memory_region_init_io(&s->iomem, OBJECT(s), &allwinner_a10_dramc_ops, s,
+ TYPE_AW_A10_DRAMC, AW_A10_DRAMC_IOSIZE);
+ sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static const VMStateDescription allwinner_a10_dramc_vmstate = {
+ .name = "allwinner-a10-dramc",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32_ARRAY(regs, AwA10DramControllerState,
+ AW_A10_DRAMC_REGS_NUM),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void allwinner_a10_dramc_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ ResettableClass *rc = RESETTABLE_CLASS(klass);
+
+ rc->phases.enter = allwinner_a10_dramc_reset_enter;
+ dc->vmsd = &allwinner_a10_dramc_vmstate;
+}
+
+static const TypeInfo allwinner_a10_dramc_info = {
+ .name = TYPE_AW_A10_DRAMC,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_init = allwinner_a10_dramc_init,
+ .instance_size = sizeof(AwA10DramControllerState),
+ .class_init = allwinner_a10_dramc_class_init,
+};
+
+static void allwinner_a10_dramc_register(void)
+{
+ type_register_static(&allwinner_a10_dramc_info);
+}
+
+type_init(allwinner_a10_dramc_register)
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index c828dbeb26..9eaa0750b5 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -39,6 +39,7 @@ subdir('macio')
softmmu_ss.add(when: 'CONFIG_IVSHMEM_DEVICE', if_true: files('ivshmem.c'))
softmmu_ss.add(when: 'CONFIG_ALLWINNER_A10_CCM', if_true: files('allwinner-a10-ccm.c'))
+softmmu_ss.add(when: 'CONFIG_ALLWINNER_A10_DRAMC', if_true: files('allwinner-a10-dramc.c'))
softmmu_ss.add(when: 'CONFIG_ALLWINNER_H3', if_true: files('allwinner-h3-ccu.c'))
specific_ss.add(when: 'CONFIG_ALLWINNER_H3', if_true: files('allwinner-cpucfg.c'))
softmmu_ss.add(when: 'CONFIG_ALLWINNER_H3', if_true: files('allwinner-h3-dramc.c'))
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-27 08:19:36 +0000