// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/unicore32/boot/compressed/misc.c * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao */ #include <asm/unaligned.h> #include <mach/uncompress.h> /* * gzip delarations */ unsigned char *output_data; unsigned long output_ptr; unsigned int free_mem_ptr; unsigned int free_mem_end_ptr; #define STATIC static #define STATIC_RW_DATA /* non-static please */ /* * arch-dependent implementations */ #ifndef ARCH_HAVE_DECOMP_ERROR #define arch_decomp_error(x) #endif #ifndef ARCH_HAVE_DECOMP_SETUP #define arch_decomp_setup() #endif #ifndef ARCH_HAVE_DECOMP_PUTS #define arch_decomp_puts(p) #endif void *memcpy(void *dest, const void *src, size_t n) { int i = 0; unsigned char *d = (unsigned char *)dest, *s = (unsigned char *)src; for (i = n >> 3; i > 0; i--) { *d++ = *s++; *d++ = *s++; *d++ = *s++; *d++ = *s++; *d++ = *s++; *d++ = *s++; *d++ = *s++; *d++ = *s++; } if (n & 1 << 2) { *d++ = *s++; *d++ = *s++; *d++ = *s++; *d++ = *s++; } if (n & 1 << 1) { *d++ = *s++; *d++ = *s++; } if (n & 1) *d++ = *s++; return dest; } void error(char *x) { arch_decomp_puts("\n\n"); arch_decomp_puts(x); arch_decomp_puts("\n\n -- System halted"); arch_decomp_error(x); for (;;) ; /* Halt */ } /* Heap size should be adjusted for different decompress method */ #ifdef CONFIG_KERNEL_GZIP #include "../../../../lib/decompress_inflate.c" #endif #ifdef CONFIG_KERNEL_BZIP2 #include "../../../../lib/decompress_bunzip2.c" #endif #ifdef CONFIG_KERNEL_LZO #include "../../../../lib/decompress_unlzo.c" #endif #ifdef CONFIG_KERNEL_LZMA #include "../../../../lib/decompress_unlzma.c" #endif unsigned long decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, unsigned long free_mem_ptr_end_p) { unsigned char *tmp; output_data = (unsigned char *)output_start; free_mem_ptr = free_mem_ptr_p; free_mem_end_ptr = free_mem_ptr_end_p; arch_decomp_setup(); tmp = (unsigned char *) (((unsigned long)input_data_end) - 4); output_ptr = get_unaligned_le32(tmp); arch_decomp_puts("Uncompressing Linux..."); __decompress(input_data, input_data_end - input_data, NULL, NULL, output_data, 0, NULL, error); arch_decomp_puts(" done, booting the kernel.\n"); return output_ptr; }