There are lots of warnings when building EFI 64-bit payload.
include/asm-generic/bitops/__fls.h:17:2: warning: left shift count >= width of type if (!(word & (~0ul << 32))) { ^
In fact, U-Boot itself as EFI payload is running in 32-bit mode. So BITS_PER_LONG needs to still be 32, but EFI status codes are 64-bit when booting from 64-bit EFI. Introduce EFI_BITS_PER_LONG to bridge those status codes with U-Boot's BITS_PER_LONG.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
---
Changes in v2: - Rework the patch to fix 64-bit payload boot issue
arch/x86/include/asm/types.h | 4 ---- include/efi.h | 32 ++++++++++++++++++++------------ 2 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/arch/x86/include/asm/types.h b/arch/x86/include/asm/types.h index 766617f..880dcb4 100644 --- a/arch/x86/include/asm/types.h +++ b/arch/x86/include/asm/types.h @@ -44,11 +44,7 @@ typedef __INT64_TYPE__ s64; typedef __UINT64_TYPE__ u64; #endif
-#ifdef CONFIG_EFI_STUB_64BIT -#define BITS_PER_LONG 64 -#else #define BITS_PER_LONG 32 -#endif /* Dma addresses are 32-bits wide. */
typedef u32 dma_addr_t; diff --git a/include/efi.h b/include/efi.h index 21921f1..83de2d4 100644 --- a/include/efi.h +++ b/include/efi.h @@ -27,19 +27,27 @@
struct efi_device_path;
+#define EFI_BITS_PER_LONG BITS_PER_LONG + +/* With 64-bit EFI stub, EFI_BITS_PER_LONG has to be 64 */ +#ifdef CONFIG_EFI_STUB_64BIT +#undef EFI_BITS_PER_LONG +#define EFI_BITS_PER_LONG 64 +#endif + #define EFI_SUCCESS 0 -#define EFI_LOAD_ERROR (1 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_INVALID_PARAMETER (2 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_UNSUPPORTED (3 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_BAD_BUFFER_SIZE (4 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_BUFFER_TOO_SMALL (5 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_NOT_READY (6 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_DEVICE_ERROR (7 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_WRITE_PROTECTED (8 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_OUT_OF_RESOURCES (9 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_ACCESS_DENIED (15 | (1UL << (BITS_PER_LONG - 1))) -#define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG - 1))) +#define EFI_LOAD_ERROR (1 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_INVALID_PARAMETER (2 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_UNSUPPORTED (3 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_BAD_BUFFER_SIZE (4 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_BUFFER_TOO_SMALL (5 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_NOT_READY (6 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_DEVICE_ERROR (7 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_WRITE_PROTECTED (8 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_OUT_OF_RESOURCES (9 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_NOT_FOUND (14 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_ACCESS_DENIED (15 | (1UL << (EFI_BITS_PER_LONG - 1))) +#define EFI_SECURITY_VIOLATION (26 | (1UL << (EFI_BITS_PER_LONG - 1)))
typedef unsigned long efi_status_t; typedef u64 efi_physical_addr_t;