2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
126 lines
2.9 KiB
C
126 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2001 MontaVista Software Inc.
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* Author: Matt Porter <mporter@mvista.com>
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*
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* Copyright (C) 2009 Lemote, Inc.
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* Author: Wu Zhangjin <wuzhangjin@gmail.com>
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/libfdt.h>
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#include <asm/addrspace.h>
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/*
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* These two variables specify the free mem region
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* that can be used for temporary malloc area
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*/
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unsigned long free_mem_ptr;
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unsigned long free_mem_end_ptr;
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/* The linker tells us where the image is. */
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extern unsigned char __image_begin, __image_end;
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/* debug interfaces */
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#ifdef CONFIG_DEBUG_ZBOOT
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extern void puts(const char *s);
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extern void puthex(unsigned long long val);
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#else
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#define puts(s) do {} while (0)
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#define puthex(val) do {} while (0)
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#endif
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extern char __appended_dtb[];
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void error(char *x)
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{
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puts("\n\n");
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puts(x);
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puts("\n\n -- System halted");
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while (1)
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; /* Halt */
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}
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/* activate the code for pre-boot environment */
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#define STATIC static
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#ifdef CONFIG_KERNEL_GZIP
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#include "../../../../lib/decompress_inflate.c"
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#endif
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#ifdef CONFIG_KERNEL_BZIP2
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#include "../../../../lib/decompress_bunzip2.c"
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#endif
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#ifdef CONFIG_KERNEL_LZ4
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#include "../../../../lib/decompress_unlz4.c"
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#endif
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#ifdef CONFIG_KERNEL_LZMA
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#include "../../../../lib/decompress_unlzma.c"
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#endif
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#ifdef CONFIG_KERNEL_LZO
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#include "../../../../lib/decompress_unlzo.c"
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#endif
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#ifdef CONFIG_KERNEL_XZ
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#include "../../../../lib/decompress_unxz.c"
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#endif
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const unsigned long __stack_chk_guard = 0x000a0dff;
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void __stack_chk_fail(void)
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{
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error("stack-protector: Kernel stack is corrupted\n");
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}
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void decompress_kernel(unsigned long boot_heap_start)
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{
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unsigned long zimage_start, zimage_size;
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zimage_start = (unsigned long)(&__image_begin);
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zimage_size = (unsigned long)(&__image_end) -
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(unsigned long)(&__image_begin);
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puts("zimage at: ");
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puthex(zimage_start);
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puts(" ");
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puthex(zimage_size + zimage_start);
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puts("\n");
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/* This area are prepared for mallocing when decompressing */
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free_mem_ptr = boot_heap_start;
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free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE;
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/* Display standard Linux/MIPS boot prompt */
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puts("Uncompressing Linux at load address ");
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puthex(VMLINUX_LOAD_ADDRESS_ULL);
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puts("\n");
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/* Decompress the kernel with according algorithm */
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__decompress((char *)zimage_start, zimage_size, 0, 0,
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(void *)VMLINUX_LOAD_ADDRESS_ULL, 0, 0, error);
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if (IS_ENABLED(CONFIG_MIPS_RAW_APPENDED_DTB) &&
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fdt_magic((void *)&__appended_dtb) == FDT_MAGIC) {
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unsigned int image_size, dtb_size;
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dtb_size = fdt_totalsize((void *)&__appended_dtb);
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/* last four bytes is always image size in little endian */
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image_size = le32_to_cpup((void *)&__image_end - 4);
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/* copy dtb to where the booted kernel will expect it */
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memcpy((void *)VMLINUX_LOAD_ADDRESS_ULL + image_size,
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__appended_dtb, dtb_size);
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}
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/* FIXME: should we flush cache here? */
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puts("Now, booting the kernel...\n");
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}
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