Re: [PATCH v7 2/3] hw/riscv/boot.c: make riscv_load_initrd() static

[Alistair Francis <alistair23@gmail.com>]

On Sat, Jan 14, 2023 at 3:39 AM Daniel Henrique Barboza
<dbarboza@ventanamicro.com> wrote:
>
> The only remaining caller is riscv_load_kernel_and_initrd() which
> belongs to the same file.
>
> Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> Reviewed-by: Bin Meng <bmeng@tinylab.org>

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

Alistair

> ---
>  hw/riscv/boot.c         | 80 ++++++++++++++++++++---------------------
>  include/hw/riscv/boot.h |  1 -
>  2 files changed, 40 insertions(+), 41 deletions(-)
>
> diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
> index 4888d5c1e0..e868fb6ade 100644
> --- a/hw/riscv/boot.c
> +++ b/hw/riscv/boot.c
> @@ -173,6 +173,46 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
>      exit(1);
>  }
>
> +static void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry)
> +{
> +    const char *filename = machine->initrd_filename;
> +    uint64_t mem_size = machine->ram_size;
> +    void *fdt = machine->fdt;
> +    hwaddr start, end;
> +    ssize_t size;
> +
> +    g_assert(filename != NULL);
> +
> +    /*
> +     * We want to put the initrd far enough into RAM that when the
> +     * kernel is uncompressed it will not clobber the initrd. However
> +     * on boards without much RAM we must ensure that we still leave
> +     * enough room for a decent sized initrd, and on boards with large
> +     * amounts of RAM we must avoid the initrd being so far up in RAM
> +     * that it is outside lowmem and inaccessible to the kernel.
> +     * So for boards with less  than 256MB of RAM we put the initrd
> +     * halfway into RAM, and for boards with 256MB of RAM or more we put
> +     * the initrd at 128MB.
> +     */
> +    start = kernel_entry + MIN(mem_size / 2, 128 * MiB);
> +
> +    size = load_ramdisk(filename, start, mem_size - start);
> +    if (size == -1) {
> +        size = load_image_targphys(filename, start, mem_size - start);
> +        if (size == -1) {
> +            error_report("could not load ramdisk '%s'", filename);
> +            exit(1);
> +        }
> +    }
> +
> +    /* Some RISC-V machines (e.g. opentitan) don't have a fdt. */
> +    if (fdt) {
> +        end = start + size;
> +        qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", start);
> +        qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", end);
> +    }
> +}
> +
>  target_ulong riscv_load_kernel(MachineState *machine,
>                                 target_ulong kernel_start_addr,
>                                 bool load_initrd,
> @@ -225,46 +265,6 @@ out:
>      return kernel_entry;
>  }
>
> -void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry)
> -{
> -    const char *filename = machine->initrd_filename;
> -    uint64_t mem_size = machine->ram_size;
> -    void *fdt = machine->fdt;
> -    hwaddr start, end;
> -    ssize_t size;
> -
> -    g_assert(filename != NULL);
> -
> -    /*
> -     * We want to put the initrd far enough into RAM that when the
> -     * kernel is uncompressed it will not clobber the initrd. However
> -     * on boards without much RAM we must ensure that we still leave
> -     * enough room for a decent sized initrd, and on boards with large
> -     * amounts of RAM we must avoid the initrd being so far up in RAM
> -     * that it is outside lowmem and inaccessible to the kernel.
> -     * So for boards with less  than 256MB of RAM we put the initrd
> -     * halfway into RAM, and for boards with 256MB of RAM or more we put
> -     * the initrd at 128MB.
> -     */
> -    start = kernel_entry + MIN(mem_size / 2, 128 * MiB);
> -
> -    size = load_ramdisk(filename, start, mem_size - start);
> -    if (size == -1) {
> -        size = load_image_targphys(filename, start, mem_size - start);
> -        if (size == -1) {
> -            error_report("could not load ramdisk '%s'", filename);
> -            exit(1);
> -        }
> -    }
> -
> -    /* Some RISC-V machines (e.g. opentitan) don't have a fdt. */
> -    if (fdt) {
> -        end = start + size;
> -        qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", start);
> -        qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", end);
> -    }
> -}
> -
>  uint64_t riscv_load_fdt(hwaddr dram_base, uint64_t mem_size, void *fdt)
>  {
>      uint64_t temp, fdt_addr;
> diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
> index c3de897371..cbd131bad7 100644
> --- a/include/hw/riscv/boot.h
> +++ b/include/hw/riscv/boot.h
> @@ -47,7 +47,6 @@ target_ulong riscv_load_kernel(MachineState *machine,
>                                 target_ulong firmware_end_addr,
>                                 bool load_initrd,
>                                 symbol_fn_t sym_cb);
> -void riscv_load_initrd(MachineState *machine, uint64_t kernel_entry);
>  uint64_t riscv_load_fdt(hwaddr dram_start, uint64_t dram_size, void *fdt);
>  void riscv_setup_rom_reset_vec(MachineState *machine, RISCVHartArrayState *harts,
>                                 hwaddr saddr,
> --
> 2.39.0
>
>