On Tue, May 27, 2025 at 11:22:52PM +0200, Ahmad Fatoum wrote:
> From: Ahmad Fatoum <ah...@a3f.at>
>
> We shouldn't have any physical addresses exceeding 32-bit on 64-bit
> systems,
Why? Aren't 64bit physical addresses normal on 64bit systems?
> especially as barebox doesn't implement ARM32 LPAE.
This patch doesn't seem to be Arm specific, so why mention ARM32 LPAE
here?
I think I am missing something here.
Sascha
>
> Add helpers to convert between the types to be able to drop casts and
> checks in the code.
>
> Signed-off-by: Ahmad Fatoum <a.fat...@barebox.org>
> ---
> include/efi/types.h | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/include/efi/types.h b/include/efi/types.h
> index c845d08d62b6..85aaf32f8f1d 100644
> --- a/include/efi/types.h
> +++ b/include/efi/types.h
> @@ -2,7 +2,11 @@
> #ifndef _EFI_TYPES_H_
> #define _EFI_TYPES_H_
>
> +#ifndef __ASSEMBLY__
> +
> #include <linux/types.h>
> +#include <linux/limits.h>
> +#include <linux/stddef.h>
> #include <linux/compiler.h>
> #include <linux/uuid.h>
>
> @@ -65,4 +69,17 @@ union efi_ip_address {
> struct efi_ipv6_address v6;
> };
>
> +static inline void *efi_phys_to_virt(efi_physical_addr_t addr)
> +{
> + if (addr > UINTPTR_MAX)
> + __builtin_trap();
> +
> + return (void *)(uintptr_t)addr;
> +}
> +
> +static inline efi_physical_addr_t efi_virt_to_phys(const void *addr)
> +{
> + return (uintptr_t)addr;
> +}
> +
> #endif
> --
> 2.39.5
>
>
>
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