[PATCH v5 01/23] efi: Define fields in struct efi_mem_desc

Ilias Apalodimas ilias.apalodimas at linaro.org
Wed Dec 11 15:45:00 CET 2024


Hi Simon,

[...]

>         u32 reserved;
> diff --git a/include/efi_loader.h b/include/efi_loader.h
> index 39809eac1bc..ee0cdd36500 100644
> --- a/include/efi_loader.h
> +++ b/include/efi_loader.h
> @@ -788,8 +788,10 @@ efi_status_t efi_add_memory_map(u64 start, u64 size, int memory_type);
>  /**
>   * efi_add_memory_map_pg() - add pages to the memory map
>   *
> - * @start:                     start address, must be a multiple of
> - *                             EFI_PAGE_SIZE
> + * @start: start address, must be a multiple of EFI_PAGE_SIZE. Note that this
> + * is actually a pointer provided as an integer. To pass in an address, pass
> + * in (ulong)map_to_sysmem(addr)

Why is this a pointer? This is the physical address of the hardware.

Thanks
/Ilias
> + *
>   * @pages:                     number of pages to add
>   * @memory_type:               type of memory added
>   * @overlap_conventional:      region may only overlap free(conventional)
> diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
> index e493934c713..f1154f73e05 100644
> --- a/lib/efi_loader/efi_memory.c
> +++ b/lib/efi_loader/efi_memory.c
> @@ -384,7 +384,9 @@ efi_status_t efi_add_memory_map_pg(u64 start, u64 pages,
>  /**
>   * efi_add_memory_map() - add memory area to the memory map
>   *
> - * @start:             start address of the memory area
> + * @start:             start address of the memory area. Note that this is
> + *                     actually a pointer provided as an integer. To pass in
> + *                     an address, pass in (ulong)map_to_sysmem(addr)
>   * @size:              length in bytes of the memory area
>   * @memory_type:       type of memory added
>   *
> --
> 2.34.1
>


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