diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/loongarch-stub.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/loongarch-stub.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/loongarch-stub.c b/drivers/firmware/efi/libstub/loongarch-stub.c new file mode 100644 index 0000000000..d6ec5d4b8d --- /dev/null +++ b/drivers/firmware/efi/libstub/loongarch-stub.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Author: Yun Liu <liuyun@loongson.cn> + * Huacai Chen <chenhuacai@loongson.cn> + * Copyright (C) 2020-2022 Loongson Technology Corporation Limited + */ + +#include <asm/efi.h> +#include <asm/addrspace.h> +#include "efistub.h" + +extern int kernel_asize; +extern int kernel_fsize; +extern int kernel_offset; +extern int kernel_entry; + +efi_status_t handle_kernel_image(unsigned long *image_addr, + unsigned long *image_size, + unsigned long *reserve_addr, + unsigned long *reserve_size, + efi_loaded_image_t *image, + efi_handle_t image_handle) +{ + efi_status_t status; + unsigned long kernel_addr = 0; + + kernel_addr = (unsigned long)&kernel_offset - kernel_offset; + + status = efi_relocate_kernel(&kernel_addr, kernel_fsize, kernel_asize, + EFI_KIMG_PREFERRED_ADDRESS, efi_get_kimg_min_align(), 0x0); + + *image_addr = kernel_addr; + *image_size = kernel_asize; + + return status; +} + +unsigned long kernel_entry_address(unsigned long kernel_addr) +{ + unsigned long base = (unsigned long)&kernel_offset - kernel_offset; + + return (unsigned long)&kernel_entry - base + kernel_addr; +} |