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efi_loader: add Linux magic to aarch64 crt0 

Add the Linux magic to the EFI file header to allow running our test
programs with GRUB's linux command. Now we can dump the fixed-up device
tree with our dtbdump.efi tool.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2021-01-29 12:35:51 +01:00
parent 850d27b4b9
commit 18dd984c56
2 changed files with 4 additions and 1 deletions
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3
arch/arm/lib/crt0_aarch64_efi.S
View File

@ -18,7 +18,8 @@
.globl ImageBase
ImageBase:
.short IMAGE_DOS_SIGNATURE /* 'MZ' */
.skip 58 /* 'MZ' + pad + offset == 64 */
.skip 54 /* 'MZ' + pad + offset == 64 */
.long LINUX_ARM64_MAGIC /* For GRUB's linux command */
.long pe_header - ImageBase /* Offset to the PE header */
pe_header:
.long IMAGE_NT_SIGNATURE /* 'PE' */

2
include/asm-generic/pe.h
View File

@ -51,4 +51,6 @@
#define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER 12
#define IMAGE_SUBSYSTEM_EFI_ROM 13
#define LINUX_ARM64_MAGIC 0x644d5241
#endif /* _ASM_PE_H */