On Wed, Apr 22, 2020 at 01:21:18PM +0200, Clement Leger wrote:
> This will allows elf loader to directly have an elf file available. Thus
> filetype_elf bootm handlers will be able to use this elf file directly.
>
> Signed-off-by: Clement Leger <cleger@xxxxxxxxx>
> ---
> common/bootm.c | 27 +++++++++++++++++++++++++++
> include/bootm.h | 3 +++
> 2 files changed, 30 insertions(+)
>
> diff --git a/common/bootm.c b/common/bootm.c
> index 366f31455..015d90f3c 100644
> --- a/common/bootm.c
> +++ b/common/bootm.c
> @@ -455,6 +455,8 @@ int bootm_get_os_size(struct image_data *data)
> {
> int ret;
>
> + if (data->elf)
> + return data->elf->high_addr - data->elf->low_addr;
> if (data->os)
> return uimage_get_size(data->os, uimage_part_num(data->os_part));
> if (data->os_fit)
> @@ -502,6 +504,20 @@ static int bootm_open_os_uimage(struct image_data *data)
> return 0;
> }
>
> +static int bootm_open_elf(struct image_data *data)
> +{
> +
> + data->elf = elf_open(data->os_file);
> + if (IS_ERR(data->elf))
> + return PTR_ERR(data->elf);
> +
> + printf("Entry Point: %08llx\n", data->elf->entry);
> +
> + data->os_address = data->elf->entry;
> +
> + return 0;
> +}
> +
This will give you linker errors when elf support is not compiled in.
if (!IS_ENABLED(CONFIG_ELF))
return -ENOSYS;
might be enough already, plus maybe an bootm kconfig option which
explicitly selects CONFIG_ELF when desired.
Sascha
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