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authorAlistair Francis <alistair.francis@wdc.com>2019-10-08 16:32:25 -0700
committerPalmer Dabbelt <palmer@sifive.com>2019-10-28 07:47:28 -0700
commit71eb522c406342c3cefa7a2837c7417eeb430ae1 (patch)
tree1554f1199005d42d3d2f51b14bcd94aa18c26782 /hw
parentcdfc19e456c7bb6dc7c308a7bc0bb22f3969843f (diff)
riscv/virt: Add the PFlash CFI01 device
Add the CFI01 PFlash to the RISC-V virt board. This is the same PFlash from the ARM Virt board and the implementation is based on the ARM Virt board. This allows users to specify flash files from the command line. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/riscv/Kconfig1
-rw-r--r--hw/riscv/virt.c86
2 files changed, 87 insertions, 0 deletions
diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig
index fb19b2df3a..b12660b9f8 100644
--- a/hw/riscv/Kconfig
+++ b/hw/riscv/Kconfig
@@ -36,4 +36,5 @@ config RISCV_VIRT
select SERIAL
select VIRTIO_MMIO
select PCI_EXPRESS_GENERIC_BRIDGE
+ select PFLASH_CFI01
select SIFIVE
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index bdbdfadd29..b2156abd6c 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -26,6 +26,7 @@
#include "hw/boards.h"
#include "hw/loader.h"
#include "hw/sysbus.h"
+#include "hw/qdev-properties.h"
#include "hw/char/serial.h"
#include "target/riscv/cpu.h"
#include "hw/riscv/riscv_hart.h"
@@ -61,12 +62,77 @@ static const struct MemmapEntry {
[VIRT_PLIC] = { 0xc000000, 0x4000000 },
[VIRT_UART0] = { 0x10000000, 0x100 },
[VIRT_VIRTIO] = { 0x10001000, 0x1000 },
+ [VIRT_FLASH] = { 0x20000000, 0x2000000 },
[VIRT_DRAM] = { 0x80000000, 0x0 },
[VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 },
[VIRT_PCIE_PIO] = { 0x03000000, 0x00010000 },
[VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 },
};
+#define VIRT_FLASH_SECTOR_SIZE (256 * KiB)
+
+static PFlashCFI01 *virt_flash_create1(RISCVVirtState *s,
+ const char *name,
+ const char *alias_prop_name)
+{
+ /*
+ * Create a single flash device. We use the same parameters as
+ * the flash devices on the ARM virt board.
+ */
+ DeviceState *dev = qdev_create(NULL, TYPE_PFLASH_CFI01);
+
+ qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE);
+ qdev_prop_set_uint8(dev, "width", 4);
+ qdev_prop_set_uint8(dev, "device-width", 2);
+ qdev_prop_set_bit(dev, "big-endian", false);
+ qdev_prop_set_uint16(dev, "id0", 0x89);
+ qdev_prop_set_uint16(dev, "id1", 0x18);
+ qdev_prop_set_uint16(dev, "id2", 0x00);
+ qdev_prop_set_uint16(dev, "id3", 0x00);
+ qdev_prop_set_string(dev, "name", name);
+
+ object_property_add_child(OBJECT(s), name, OBJECT(dev),
+ &error_abort);
+ object_property_add_alias(OBJECT(s), alias_prop_name,
+ OBJECT(dev), "drive", &error_abort);
+
+ return PFLASH_CFI01(dev);
+}
+
+static void virt_flash_create(RISCVVirtState *s)
+{
+ s->flash[0] = virt_flash_create1(s, "virt.flash0", "pflash0");
+ s->flash[1] = virt_flash_create1(s, "virt.flash1", "pflash1");
+}
+
+static void virt_flash_map1(PFlashCFI01 *flash,
+ hwaddr base, hwaddr size,
+ MemoryRegion *sysmem)
+{
+ DeviceState *dev = DEVICE(flash);
+
+ assert(size % VIRT_FLASH_SECTOR_SIZE == 0);
+ assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
+ qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
+ qdev_init_nofail(dev);
+
+ memory_region_add_subregion(sysmem, base,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(dev),
+ 0));
+}
+
+static void virt_flash_map(RISCVVirtState *s,
+ MemoryRegion *sysmem)
+{
+ hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2;
+ hwaddr flashbase = virt_memmap[VIRT_FLASH].base;
+
+ virt_flash_map1(s->flash[0], flashbase, flashsize,
+ sysmem);
+ virt_flash_map1(s->flash[1], flashbase + flashsize, flashsize,
+ sysmem);
+}
+
static void create_pcie_irq_map(void *fdt, char *nodename,
uint32_t plic_phandle)
{
@@ -121,6 +187,8 @@ static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
char *nodename;
uint32_t plic_phandle, phandle = 1;
int i;
+ hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2;
+ hwaddr flashbase = virt_memmap[VIRT_FLASH].base;
fdt = s->fdt = create_device_tree(&s->fdt_size);
if (!fdt) {
@@ -314,6 +382,15 @@ static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
}
g_free(nodename);
+
+ nodename = g_strdup_printf("/flash@%" PRIx64, flashbase);
+ qemu_fdt_add_subnode(s->fdt, nodename);
+ qemu_fdt_setprop_string(s->fdt, nodename, "compatible", "cfi-flash");
+ qemu_fdt_setprop_sized_cells(s->fdt, nodename, "reg",
+ 2, flashbase, 2, flashsize,
+ 2, flashbase + flashsize, 2, flashsize);
+ qemu_fdt_setprop_cell(s->fdt, nodename, "bank-width", 4);
+ g_free(nodename);
}
@@ -493,6 +570,15 @@ static void riscv_virt_board_init(MachineState *machine)
0, qdev_get_gpio_in(DEVICE(s->plic), UART0_IRQ), 399193,
serial_hd(0), DEVICE_LITTLE_ENDIAN);
+ virt_flash_create(s);
+
+ for (i = 0; i < ARRAY_SIZE(s->flash); i++) {
+ /* Map legacy -drive if=pflash to machine properties */
+ pflash_cfi01_legacy_drive(s->flash[i],
+ drive_get(IF_PFLASH, 0, i));
+ }
+ virt_flash_map(s, system_memory);
+
g_free(plic_hart_config);
}