[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL v2 02/19] hw/riscv: virt: Allow passing custom DTB
From: |
Alistair Francis |
Subject: |
[PULL v2 02/19] hw/riscv: virt: Allow passing custom DTB |
Date: |
Tue, 3 Nov 2020 07:21:33 -0800 |
From: Anup Patel <anup.patel@wdc.com>
Extend virt machine to allow passing custom DTB using "-dtb"
command-line parameter. This will help users pass modified DTB
to virt machine.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20201022053225.2596110-2-anup.patel@wdc.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
hw/riscv/virt.c | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 6bfd10dfc7..25cea7aa67 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -181,6 +181,7 @@ static void create_fdt(RISCVVirtState *s, const struct
MemmapEntry *memmap,
{
void *fdt;
int i, cpu, socket;
+ const char *dtb_filename;
MachineState *mc = MACHINE(s);
uint64_t addr, size;
uint32_t *clint_cells, *plic_cells;
@@ -194,10 +195,20 @@ static void create_fdt(RISCVVirtState *s, const struct
MemmapEntry *memmap,
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) {
- error_report("create_device_tree() failed");
- exit(1);
+ dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
+ if (dtb_filename) {
+ fdt = s->fdt = load_device_tree(dtb_filename, &s->fdt_size);
+ if (!fdt) {
+ error_report("load_device_tree() failed");
+ exit(1);
+ }
+ goto update_bootargs;
+ } else {
+ fdt = s->fdt = create_device_tree(&s->fdt_size);
+ if (!fdt) {
+ error_report("create_device_tree() failed");
+ exit(1);
+ }
}
qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu");
@@ -418,9 +429,6 @@ static void create_fdt(RISCVVirtState *s, const struct
MemmapEntry *memmap,
qemu_fdt_add_subnode(fdt, "/chosen");
qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", name);
- if (cmdline) {
- qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
- }
g_free(name);
name = g_strdup_printf("/soc/rtc@%lx", (long)memmap[VIRT_RTC].base);
@@ -441,6 +449,11 @@ static void create_fdt(RISCVVirtState *s, const struct
MemmapEntry *memmap,
2, flashbase + flashsize, 2, flashsize);
qemu_fdt_setprop_cell(s->fdt, name, "bank-width", 4);
g_free(name);
+
+update_bootargs:
+ if (cmdline) {
+ qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+ }
}
static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem,
--
2.28.0
- [PULL v2 00/19] riscv-to-apply queue, Alistair Francis, 2020/11/03
- [PULL v2 02/19] hw/riscv: virt: Allow passing custom DTB,
Alistair Francis <=
- [PULL v2 01/19] hw/riscv: sifive_u: Allow passing custom DTB, Alistair Francis, 2020/11/03
- [PULL v2 03/19] target/riscv: Merge m/vsstatus and m/vsstatush into one uint64_t unit, Alistair Francis, 2020/11/03
- [PULL v2 05/19] target/riscv: Add PMP state description, Alistair Francis, 2020/11/03
- [PULL v2 06/19] target/riscv: Add H extension state description, Alistair Francis, 2020/11/03
- [PULL v2 07/19] target/riscv: Add V extension state description, Alistair Francis, 2020/11/03
- [PULL v2 04/19] target/riscv: Add basic vmstate description of CPU, Alistair Francis, 2020/11/03
- [PULL v2 08/19] target/riscv: Add sifive_plic vmstate, Alistair Francis, 2020/11/03
- [PULL v2 09/19] hw/riscv: microchip_pfsoc: Document where to look at the SoC memory maps, Alistair Francis, 2020/11/03
- [PULL v2 10/19] hw/misc: Add Microchip PolarFire SoC DDR Memory Controller support, Alistair Francis, 2020/11/03
- [PULL v2 11/19] hw/riscv: microchip_pfsoc: Connect DDR memory controller modules, Alistair Francis, 2020/11/03