Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755912Ab0LIJib (ORCPT ); Thu, 9 Dec 2010 04:38:31 -0500 Received: from mprc.pku.edu.cn ([162.105.203.9]:53326 "EHLO mprc.pku.edu.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755897Ab0LIJi2 (ORCPT ); Thu, 9 Dec 2010 04:38:28 -0500 From: "Guan Xuetao" To: "Arnd Bergmann" Cc: , Subject: [PATCHv1 008/211] unicore32: new file arch/unicore32/boot/compressed/misc.c Date: Thu, 9 Dec 2010 17:38:26 +0800 Message-ID: <01da01cb9784$d44c0460$7ce40d20$@mprc.pku.edu.cn> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AcuXhNP0y/6QfpikR3uC1ifOkX3fyQ== Content-Language: zh-cn Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3922 Lines: 168 From: Guan Xuetao decompress_kernel call wrapper in c function Signed-off-by: Guan Xuetao --- arch/unicore32/boot/compressed/misc.c | 143 +++++++++++++++++++++++++++++++++ 1 files changed, 143 insertions(+), 0 deletions(-) diff --git a/arch/unicore32/boot/compressed/misc.c b/arch/unicore32/boot/compressed/misc.c new file mode 100644 index 0000000..28dda37 --- /dev/null +++ b/arch/unicore32/boot/compressed/misc.c @@ -0,0 +1,143 @@ +/* + * linux/arch/unicore32/boot/compressed/misc.c + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include + +/* + * 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 + +/* Diagnostic functions */ +#ifdef DEBUG +# define Assert(cond, msg) { if (!(cond)) error(msg); } +# define Trace(x) fprintf x +# define Tracev(x) { if (verbose) fprintf x; } +# define Tracevv(x) { if (verbose > 1) fprintf x; } +# define Tracec(c, x) { if (verbose && (c)) fprintf x; } +# define Tracecv(c, x) { if ((verbose > 1) && (c)) fprintf x; } +#else +# define Assert(cond, msg) +# define Trace(x) +# define Tracev(x) +# define Tracevv(x) +# define Tracec(c, x) +# define Tracecv(c, x) +#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); + + do { } while (1); /* 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, NULL, error); + arch_decomp_puts(" done, booting the kernel.\n"); + return output_ptr; +} -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/