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 #include "loongarch-stub.h"
12
13 extern int kernel_asize;
14 extern int kernel_fsize;
15 extern int kernel_entry;
16
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)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)image->image_base;
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
kernel_entry_address(unsigned long kernel_addr,efi_loaded_image_t * image)38 unsigned long kernel_entry_address(unsigned long kernel_addr,
39 efi_loaded_image_t *image)
40 {
41 unsigned long base = (unsigned long)image->image_base;
42
43 return (unsigned long)&kernel_entry - base + kernel_addr;
44 }
45