diff options
Diffstat (limited to 'arch/riscv/kernel/head.S')
| -rw-r--r-- | arch/riscv/kernel/head.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S index 703e59d717f0..11e2a4fe66e0 100644 --- a/arch/riscv/kernel/head.S +++ b/arch/riscv/kernel/head.S @@ -12,6 +12,7 @@ #include <asm/csr.h> #include <asm/hwcap.h> #include <asm/image.h> +#include "efi-header.S" __HEAD ENTRY(_start) @@ -21,10 +22,18 @@ ENTRY(_start) * Do not modify it without modifying the structure and all bootloaders * that expects this header format!! */ +#ifdef CONFIG_EFI + /* + * This instruction decodes to "MZ" ASCII required by UEFI. + */ + c.li s4,-13 + j _start_kernel +#else /* jump to start kernel */ j _start_kernel /* reserved */ .word 0 +#endif .balign 8 #if __riscv_xlen == 64 /* Image load offset(2MB) from start of RAM */ @@ -42,7 +51,14 @@ ENTRY(_start) .ascii RISCV_IMAGE_MAGIC .balign 4 .ascii RISCV_IMAGE_MAGIC2 +#ifdef CONFIG_EFI + .word pe_head_start - _start +pe_head_start: + + __EFI_PE_HEADER +#else .word 0 +#endif .align 2 #ifdef CONFIG_MMU |