1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Author: Yun Liu <liuyun@loongson.cn> 4 * Huacai Chen <chenhuacai@loongson.cn> 5 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited 6 */ 7 8 #include <asm/efi.h> 9 #include <asm/addrspace.h> 10 #include "efistub.h" 11 12 extern int kernel_asize; 13 extern int kernel_fsize; 14 extern int kernel_offset; 15 extern int kernel_entry; 16 17 efi_status_t handle_kernel_image(unsigned long *image_addr, 18 unsigned long *image_size, 19 unsigned long *reserve_addr, 20 unsigned long *reserve_size, 21 efi_loaded_image_t *image, 22 efi_handle_t image_handle) 23 { 24 efi_status_t status; 25 unsigned long kernel_addr = 0; 26 27 kernel_addr = (unsigned long)&kernel_offset - kernel_offset; 28 29 status = efi_relocate_kernel(&kernel_addr, kernel_fsize, kernel_asize, 30 EFI_KIMG_PREFERRED_ADDRESS, efi_get_kimg_min_align(), 0x0); 31 32 *image_addr = kernel_addr; 33 *image_size = kernel_asize; 34 35 return status; 36 } 37 38 unsigned long kernel_entry_address(unsigned long kernel_addr) 39 { 40 unsigned long base = (unsigned long)&kernel_offset - kernel_offset; 41 42 return (unsigned long)&kernel_entry - base + kernel_addr; 43 } 44