1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
// 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"
typedef void __noreturn (*kernel_entry_t)(bool efi, unsigned long fdt);
extern int kernel_asize;
extern int kernel_fsize;
extern int kernel_offset;
extern kernel_entry_t kernel_entry;
efi_status_t check_platform_features(void)
{
return EFI_SUCCESS;
}
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,
PHYSADDR(VMLINUX_LOAD_ADDRESS), SZ_2M, 0x0);
*image_addr = kernel_addr;
*image_size = kernel_asize;
return status;
}
void __noreturn efi_enter_kernel(unsigned long entrypoint, unsigned long fdt, unsigned long fdt_size)
{
kernel_entry_t real_kernel_entry;
/* Config Direct Mapping */
csr_write64(CSR_DMW0_INIT, LOONGARCH_CSR_DMWIN0);
csr_write64(CSR_DMW1_INIT, LOONGARCH_CSR_DMWIN1);
real_kernel_entry = (kernel_entry_t)
((unsigned long)&kernel_entry - entrypoint + VMLINUX_LOAD_ADDRESS);
if (!efi_novamap)
real_kernel_entry(true, fdt);
else
real_kernel_entry(false, fdt);
}
|
