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[v3,24/28] riscv: sifive_u: Support loading initramfs

Message ID 1565510821-3927-25-git-send-email-bmeng.cn@gmail.com
State Superseded
Headers show
Series riscv: sifive_u: Improve the emulation fidelity of sifive_u machine | expand

Commit Message

Bin Meng Aug. 11, 2019, 8:06 a.m. UTC 
The loading of initramfs is currently not supported on 'sifive_u'.
Add the support to make '-initrd' command line parameter useful.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Chih-Min Chao <chihmin.chao@sifive.com>
---

Changes in v3: None
Changes in v2: None

 hw/riscv/sifive_u.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

Comments

Alistair Francis Aug. 11, 2019, 5:17 p.m. UTC | #1 
On Sun, Aug 11, 2019 at 1:17 AM Bin Meng <bmeng.cn@gmail.com> wrote:
>
> The loading of initramfs is currently not supported on 'sifive_u'.
> Add the support to make '-initrd' command line parameter useful.
>
> Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
> Reviewed-by: Chih-Min Chao <chihmin.chao@sifive.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>
> Changes in v3: None
> Changes in v2: None
>
>  hw/riscv/sifive_u.c | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
> index e8bef44..b0026aa 100644
> --- a/hw/riscv/sifive_u.c
> +++ b/hw/riscv/sifive_u.c
> @@ -328,7 +328,18 @@ static void riscv_sifive_u_init(MachineState *machine)
>                                   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(s->fdt, "/chosen",
> +                                  "linux,initrd-start", start);
> +            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
> +                                  end);
> +        }
>      }
>
>      /* reset vector */
> --
> 2.7.4
>
>
diff mbox series

Patch

diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index e8bef44..b0026aa 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -328,7 +328,18 @@  static void riscv_sifive_u_init(MachineState *machine)
                                  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(s->fdt, "/chosen",
+                                  "linux,initrd-start", start);
+            qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
+                                  end);
+        }
     }
 
     /* reset vector */