diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2019-07-19 06:40:43 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2019-09-17 08:42:39 -0700 |
| commit | 0f8d4462498afd2f071cb5c837750b703a48ba18 (patch) | |
| tree | 007b1db9a794295100ceb7d9e855c9942314b1f4 /hw/riscv | |
| parent | f8c3db33a5e863291182f8862ddf81618a7c6194 (diff) | |
riscv: sifive_u: Add support for loading initrd
Add support for loading initrd with "-initrd <filename>"
to the sifive_u machine. This lets us boot into Linux without
disk drive.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'hw/riscv')
| -rw-r--r-- | hw/riscv/sifive_u.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 9910fa6708..32167d05a1 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -67,7 +67,7 @@ static const struct MemmapEntry { #define GEM_REVISION 0x10070109 -static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, +static void *create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, uint64_t mem_size, const char *cmdline) { void *fdt; @@ -244,11 +244,14 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); } g_free(nodename); + + return fdt; } static void riscv_sifive_u_init(MachineState *machine) { const struct MemmapEntry *memmap = sifive_u_memmap; + void *fdt; SiFiveUState *s = g_new0(SiFiveUState, 1); MemoryRegion *system_memory = get_system_memory(); @@ -269,13 +272,24 @@ static void riscv_sifive_u_init(MachineState *machine) main_mem); /* create device tree */ - create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); + fdt = create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); riscv_find_and_load_firmware(machine, BIOS_FILENAME, memmap[SIFIVE_U_DRAM].base); if (machine->kernel_filename) { - riscv_load_kernel(machine->kernel_filename); + uint64_t kernel_entry = riscv_load_kernel(machine->kernel_filename); + + if (machine->initrd_filename) { + hwaddr start; + hwaddr end = riscv_load_initrd(machine->initrd_filename, + machine->ram_size, kernel_entry, + &start); + qemu_fdt_setprop_cell(fdt, "/chosen", + "linux,initrd-start", start); + qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", + end); + } } /* reset vector */ |