| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* |
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| 3 | * Author: Yun Liu <liuyun@loongson.cn> |
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| 4 | * Huacai Chen <chenhuacai@loongson.cn> |
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| 5 | * Copyright (C) 2020-2022 Loongson Technology Corporation Limited |
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| 6 | */ |
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| 7 | |
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| 8 | #include <asm/efi.h> |
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| 9 | #include <asm/addrspace.h> |
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| 10 | #include "efistub.h" |
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| 11 | #include "loongarch-stub.h" |
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| 12 | |
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| 13 | extern int kernel_asize; |
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| 14 | extern int kernel_fsize; |
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| 15 | extern int kernel_entry; |
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| 16 | |
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| 17 | efi_status_t handle_kernel_image(unsigned long *image_addr, |
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| 18 | unsigned long *image_size, |
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| 19 | unsigned long *reserve_addr, |
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| 20 | unsigned long *reserve_size, |
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| 21 | efi_loaded_image_t *image, |
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| 22 | efi_handle_t image_handle) |
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| 23 | { |
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| 24 | efi_status_t status; |
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| 25 | unsigned long kernel_addr = 0; |
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| 26 | |
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| 27 | kernel_addr = (unsigned long)image->image_base; |
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| 28 | |
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| 29 | status = efi_relocate_kernel(image_addr: &kernel_addr, image_size: kernel_fsize, alloc_size: kernel_asize, |
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| 30 | preferred_addr: EFI_KIMG_PREFERRED_ADDRESS, alignment: efi_get_kimg_min_align(), min_addr: 0x0); |
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| 31 | |
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| 32 | *image_addr = kernel_addr; |
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| 33 | *image_size = kernel_asize; |
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| 34 | |
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| 35 | return status; |
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| 36 | } |
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| 37 | |
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| 38 | unsigned long kernel_entry_address(unsigned long kernel_addr, |
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| 39 | efi_loaded_image_t *image) |
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| 40 | { |
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| 41 | unsigned long base = (unsigned long)image->image_base; |
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| 42 | |
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| 43 | return (unsigned long)&kernel_entry - base + kernel_addr; |
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| 44 | } |
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| 45 | |
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