d729b554e1
The LoongArch build of the EFI stub is part of the core kernel image, and therefore accesses section markers directly when it needs to figure out the size of the various section. The zboot decompressor does not have access to those symbols, but doesn't really need that either. So let's move handle_kernel_image() into a separate file (or rather, move everything else into a separate file) so that the zboot build does not pull in unused code that links to symbols that it does not define. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Author: Yun Liu <liuyun@loongson.cn>
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* Huacai Chen <chenhuacai@loongson.cn>
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#include <asm/efi.h>
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#include <asm/addrspace.h>
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#include "efistub.h"
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extern int kernel_asize;
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extern int kernel_fsize;
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extern int kernel_offset;
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extern int kernel_entry;
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efi_status_t handle_kernel_image(unsigned long *image_addr,
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unsigned long *image_size,
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unsigned long *reserve_addr,
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unsigned long *reserve_size,
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efi_loaded_image_t *image,
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efi_handle_t image_handle)
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{
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int nr_pages = round_up(kernel_asize, EFI_ALLOC_ALIGN) / EFI_PAGE_SIZE;
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efi_physical_addr_t kernel_addr = EFI_KIMG_PREFERRED_ADDRESS;
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efi_status_t status;
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/*
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* Allocate space for the kernel image at the preferred offset. This is
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* the only location in memory from where we can execute the image, so
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* no point in falling back to another allocation.
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*/
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status = efi_bs_call(allocate_pages, EFI_ALLOCATE_ADDRESS,
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EFI_LOADER_DATA, nr_pages, &kernel_addr);
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if (status != EFI_SUCCESS)
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return status;
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*image_addr = EFI_KIMG_PREFERRED_ADDRESS;
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*image_size = kernel_asize;
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memcpy((void *)EFI_KIMG_PREFERRED_ADDRESS,
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(void *)&kernel_offset - kernel_offset,
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kernel_fsize);
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return status;
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}
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unsigned long kernel_entry_address(void)
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{
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unsigned long base = (unsigned long)&kernel_offset - kernel_offset;
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return (unsigned long)&kernel_entry - base + VMLINUX_LOAD_ADDRESS;
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}
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