2011-12-05 14:52:25 +00:00
|
|
|
/*
|
|
|
|
* LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards
|
|
|
|
*
|
|
|
|
* Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
|
|
|
|
*
|
|
|
|
* Some parts of this code was based on the OpenWrt specific lzma-loader
|
|
|
|
* for the BCM47xx and ADM5120 based boards:
|
|
|
|
* Copyright (C) 2004 Manuel Novoa III (mjn3@codepoet.org)
|
|
|
|
* Copyright (C) 2005 Mineharu Takahara <mtakahar@yahoo.com>
|
|
|
|
* Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
|
|
|
|
*
|
|
|
|
* The image_header structure has been taken from the U-Boot project.
|
|
|
|
* (C) Copyright 2008 Semihalf
|
|
|
|
* (C) Copyright 2000-2005
|
|
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
|
|
*
|
|
|
|
* 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 <stddef.h>
|
|
|
|
#include <stdint.h>
|
|
|
|
|
|
|
|
#include "config.h"
|
|
|
|
#include "cache.h"
|
|
|
|
#include "printf.h"
|
|
|
|
#include "LzmaDecode.h"
|
|
|
|
|
|
|
|
#define AR71XX_FLASH_START 0x1f000000
|
|
|
|
#define AR71XX_FLASH_END 0x1fe00000
|
|
|
|
|
|
|
|
#define KSEG0 0x80000000
|
|
|
|
#define KSEG1 0xa0000000
|
|
|
|
|
|
|
|
#define KSEG1ADDR(a) ((((unsigned)(a)) & 0x1fffffffU) | KSEG1)
|
|
|
|
|
|
|
|
#undef LZMA_DEBUG
|
|
|
|
|
|
|
|
#ifdef LZMA_DEBUG
|
|
|
|
# define DBG(f, a...) printf(f, ## a)
|
|
|
|
#else
|
|
|
|
# define DBG(f, a...) do {} while (0)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#define IH_MAGIC_OKLI 0x4f4b4c49 /* 'OKLI' */
|
|
|
|
|
|
|
|
#define IH_NMLEN 32 /* Image Name Length */
|
|
|
|
|
|
|
|
typedef struct image_header {
|
|
|
|
uint32_t ih_magic; /* Image Header Magic Number */
|
|
|
|
uint32_t ih_hcrc; /* Image Header CRC Checksum */
|
|
|
|
uint32_t ih_time; /* Image Creation Timestamp */
|
|
|
|
uint32_t ih_size; /* Image Data Size */
|
|
|
|
uint32_t ih_load; /* Data Load Address */
|
|
|
|
uint32_t ih_ep; /* Entry Point Address */
|
|
|
|
uint32_t ih_dcrc; /* Image Data CRC Checksum */
|
|
|
|
uint8_t ih_os; /* Operating System */
|
|
|
|
uint8_t ih_arch; /* CPU architecture */
|
|
|
|
uint8_t ih_type; /* Image Type */
|
|
|
|
uint8_t ih_comp; /* Compression Type */
|
|
|
|
uint8_t ih_name[IH_NMLEN]; /* Image Name */
|
|
|
|
} image_header_t;
|
|
|
|
|
|
|
|
/* beyond the image end, size not known in advance */
|
|
|
|
extern unsigned char workspace[];
|
|
|
|
extern void board_init(void);
|
|
|
|
|
|
|
|
static CLzmaDecoderState lzma_state;
|
|
|
|
static unsigned char *lzma_data;
|
|
|
|
static unsigned long lzma_datasize;
|
|
|
|
static unsigned long lzma_outsize;
|
|
|
|
static unsigned long kernel_la;
|
|
|
|
|
|
|
|
#ifdef CONFIG_KERNEL_CMDLINE
|
2015-08-02 15:06:54 +00:00
|
|
|
#define kernel_argc 2
|
2011-12-05 14:52:25 +00:00
|
|
|
static const char kernel_cmdline[] = CONFIG_KERNEL_CMDLINE;
|
|
|
|
static const char *kernel_argv[] = {
|
2015-08-02 15:06:54 +00:00
|
|
|
NULL,
|
2011-12-05 14:52:25 +00:00
|
|
|
kernel_cmdline,
|
|
|
|
NULL,
|
|
|
|
};
|
|
|
|
#endif /* CONFIG_KERNEL_CMDLINE */
|
|
|
|
|
|
|
|
static void halt(void)
|
|
|
|
{
|
|
|
|
printf("\nSystem halted!\n");
|
|
|
|
for(;;);
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline__ unsigned long get_be32(void *buf)
|
|
|
|
{
|
|
|
|
unsigned char *p = buf;
|
|
|
|
|
|
|
|
return (((unsigned long) p[0] << 24) +
|
|
|
|
((unsigned long) p[1] << 16) +
|
|
|
|
((unsigned long) p[2] << 8) +
|
|
|
|
(unsigned long) p[3]);
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline__ unsigned char lzma_get_byte(void)
|
|
|
|
{
|
|
|
|
unsigned char c;
|
|
|
|
|
|
|
|
lzma_datasize--;
|
|
|
|
c = *lzma_data++;
|
|
|
|
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int lzma_init_props(void)
|
|
|
|
{
|
|
|
|
unsigned char props[LZMA_PROPERTIES_SIZE];
|
|
|
|
int res;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* read lzma properties */
|
|
|
|
for (i = 0; i < LZMA_PROPERTIES_SIZE; i++)
|
|
|
|
props[i] = lzma_get_byte();
|
|
|
|
|
|
|
|
/* read the lower half of uncompressed size in the header */
|
|
|
|
lzma_outsize = ((SizeT) lzma_get_byte()) +
|
|
|
|
((SizeT) lzma_get_byte() << 8) +
|
|
|
|
((SizeT) lzma_get_byte() << 16) +
|
|
|
|
((SizeT) lzma_get_byte() << 24);
|
|
|
|
|
|
|
|
/* skip rest of the header (upper half of uncompressed size) */
|
|
|
|
for (i = 0; i < 4; i++)
|
|
|
|
lzma_get_byte();
|
|
|
|
|
|
|
|
res = LzmaDecodeProperties(&lzma_state.Properties, props,
|
|
|
|
LZMA_PROPERTIES_SIZE);
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int lzma_decompress(unsigned char *outStream)
|
|
|
|
{
|
|
|
|
SizeT ip, op;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
lzma_state.Probs = (CProb *) workspace;
|
|
|
|
|
|
|
|
ret = LzmaDecode(&lzma_state, lzma_data, lzma_datasize, &ip, outStream,
|
|
|
|
lzma_outsize, &op);
|
|
|
|
|
|
|
|
if (ret != LZMA_RESULT_OK) {
|
|
|
|
int i;
|
|
|
|
|
|
|
|
DBG("LzmaDecode error %d at %08x, osize:%d ip:%d op:%d\n",
|
|
|
|
ret, lzma_data + ip, lzma_outsize, ip, op);
|
|
|
|
|
|
|
|
for (i = 0; i < 16; i++)
|
|
|
|
DBG("%02x ", lzma_data[ip + i]);
|
|
|
|
|
|
|
|
DBG("\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if (LZMA_WRAPPER)
|
|
|
|
static void lzma_init_data(void)
|
|
|
|
{
|
|
|
|
extern unsigned char _lzma_data_start[];
|
|
|
|
extern unsigned char _lzma_data_end[];
|
|
|
|
|
|
|
|
kernel_la = LOADADDR;
|
|
|
|
lzma_data = _lzma_data_start;
|
|
|
|
lzma_datasize = _lzma_data_end - _lzma_data_start;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
static void lzma_init_data(void)
|
|
|
|
{
|
|
|
|
struct image_header *hdr = NULL;
|
|
|
|
unsigned char *flash_base;
|
|
|
|
unsigned long flash_ofs;
|
|
|
|
unsigned long kernel_ofs;
|
|
|
|
unsigned long kernel_size;
|
|
|
|
|
|
|
|
flash_base = (unsigned char *) KSEG1ADDR(AR71XX_FLASH_START);
|
|
|
|
|
|
|
|
printf("Looking for OpenWrt image... ");
|
|
|
|
|
|
|
|
for (flash_ofs = CONFIG_FLASH_OFFS;
|
|
|
|
flash_ofs <= (CONFIG_FLASH_OFFS + CONFIG_FLASH_MAX);
|
|
|
|
flash_ofs += CONFIG_FLASH_STEP) {
|
|
|
|
unsigned long magic;
|
|
|
|
unsigned char *p;
|
|
|
|
|
|
|
|
p = flash_base + flash_ofs;
|
|
|
|
magic = get_be32(p);
|
|
|
|
if (magic == IH_MAGIC_OKLI) {
|
|
|
|
hdr = (struct image_header *) p;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (hdr == NULL) {
|
|
|
|
printf("not found!\n");
|
|
|
|
halt();
|
|
|
|
}
|
|
|
|
|
|
|
|
printf("found at 0x%08x\n", flash_base + flash_ofs);
|
|
|
|
|
|
|
|
kernel_ofs = sizeof(struct image_header);
|
|
|
|
kernel_size = get_be32(&hdr->ih_size);
|
|
|
|
kernel_la = get_be32(&hdr->ih_load);
|
|
|
|
|
|
|
|
lzma_data = flash_base + flash_ofs + kernel_ofs;
|
|
|
|
lzma_datasize = kernel_size;
|
|
|
|
}
|
|
|
|
#endif /* (LZMA_WRAPPER) */
|
|
|
|
|
|
|
|
void loader_main(unsigned long reg_a0, unsigned long reg_a1,
|
|
|
|
unsigned long reg_a2, unsigned long reg_a3)
|
|
|
|
{
|
|
|
|
void (*kernel_entry) (unsigned long, unsigned long, unsigned long,
|
|
|
|
unsigned long);
|
|
|
|
int res;
|
|
|
|
|
|
|
|
board_init();
|
|
|
|
|
|
|
|
printf("\n\nOpenWrt kernel loader for AR7XXX/AR9XXX\n");
|
|
|
|
printf("Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>\n");
|
|
|
|
|
|
|
|
lzma_init_data();
|
|
|
|
|
|
|
|
res = lzma_init_props();
|
|
|
|
if (res != LZMA_RESULT_OK) {
|
|
|
|
printf("Incorrect LZMA stream properties!\n");
|
|
|
|
halt();
|
|
|
|
}
|
|
|
|
|
|
|
|
printf("Decompressing kernel... ");
|
|
|
|
|
|
|
|
res = lzma_decompress((unsigned char *) kernel_la);
|
|
|
|
if (res != LZMA_RESULT_OK) {
|
|
|
|
printf("failed, ");
|
|
|
|
switch (res) {
|
|
|
|
case LZMA_RESULT_DATA_ERROR:
|
|
|
|
printf("data error!\n");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
printf("unknown error %d!\n", res);
|
|
|
|
}
|
|
|
|
halt();
|
|
|
|
} else {
|
|
|
|
printf("done!\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
flush_cache(kernel_la, lzma_outsize);
|
|
|
|
|
|
|
|
printf("Starting kernel at %08x...\n\n", kernel_la);
|
|
|
|
|
|
|
|
#ifdef CONFIG_KERNEL_CMDLINE
|
|
|
|
reg_a0 = kernel_argc;
|
|
|
|
reg_a1 = (unsigned long) kernel_argv;
|
|
|
|
reg_a2 = 0;
|
|
|
|
reg_a3 = 0;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
kernel_entry = (void *) kernel_la;
|
|
|
|
kernel_entry(reg_a0, reg_a1, reg_a2, reg_a3);
|
|
|
|
}
|