Openwrt/package/uboot-ifxmips/files/lib_bootstrap/bootstrap_board_danube.c
Felix Fietkau 783bb0e81c move ifxmips uboot to package/
SVN-Revision: 11601
2008-06-28 19:53:41 +00:00

502 lines
12 KiB
C

/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <devices.h>
#include <version.h>
#include <net.h>
#include <environment.h>
#ifdef CONFIG_DANUBE
#include <asm-mips/danube.h>
#include <configs/danube.h>
#endif
#include "LzmaWrapper.h"
//#define DEBUG_ENABLE_BOOTSTRAP_PRINTF
DECLARE_GLOBAL_DATA_PTR;
#if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < BOOTSTRAP_CFG_MONITOR_BASE) || \
(CFG_ENV_ADDR >= (BOOTSTRAP_CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
defined(CFG_ENV_IS_IN_NVRAM)
#define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
#else
#define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
#endif
#undef DEBUG
#if (CONFIG_COMMANDS & CFG_CMD_NAND)
extern unsigned long nand_init(void);
#endif
#ifdef CONFIG_SERIAL_FLASH
extern int serial_flash_init (void);
#endif
extern int timer_init(void);
extern int incaip_set_cpuclk(void);
extern ulong uboot_end_data_bootstrap;
extern ulong uboot_end_bootstrap;
ulong monitor_flash_len;
const char version_string[] =
U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
static char *failed = "*** failed ***\n";
/*
* Begin and End of memory area for malloc(), and current "brk"
*/
static ulong mem_malloc_start;
static ulong mem_malloc_end;
static ulong mem_malloc_brk;
/*
* The Malloc area is immediately below the monitor copy in DRAM
*/
static void mem_malloc_init (ulong dest_addr)
{
// ulong dest_addr = BOOTSTRAP_CFG_MONITOR_BASE + gd->reloc_off;
mem_malloc_end = dest_addr;
mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
mem_malloc_brk = mem_malloc_start;
memset ((void *) mem_malloc_start,
0,
mem_malloc_end - mem_malloc_start);
}
void *malloc(unsigned int size)
{
if(size < (mem_malloc_end - mem_malloc_start))
{
mem_malloc_start += size;
return (void *)(mem_malloc_start - size);
}
return NULL;
}
void *realloc(void *src,unsigned int size)
{
return NULL;
}
void free(void *src)
{
return;
}
void *sbrk (ptrdiff_t increment)
{
ulong old = mem_malloc_brk;
ulong new = old + increment;
if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
return (NULL);
}
mem_malloc_brk = new;
return ((void *) old);
}
static int init_func_ram (void)
{
#ifdef CONFIG_BOARD_TYPES
int board_type = gd->board_type;
#else
int board_type = 0; /* use dummy arg */
#endif
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
puts ("DRAM: ");
#endif
if ((gd->ram_size = initdram (board_type)) > 0) {
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
print_size (gd->ram_size, "\n");
#endif
return (0);
}
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
puts (failed);
#endif
return (1);
}
static int display_banner(void)
{
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("\n\n%s\n\n", version_string);
#endif
return (0);
}
static int init_baudrate (void)
{
#if 0
char tmp[64]; /* long enough for environment variables */
int i = getenv_r ("baudrate", tmp, sizeof (tmp));
gd->baudrate = (i > 0)
? (int) simple_strtoul (tmp, NULL, 10)
: CONFIG_BAUDRATE;
#endif
gd->baudrate = CONFIG_BAUDRATE;
return (0);
}
#ifdef CONFIG_DANUBE
static void init_led(void)
{
*(unsigned long *)0xBE100B18 |= 0x70;
*(unsigned long *)0xBE100B1C |= 0x70;
*(unsigned long *)0xBE100B20 &= ~0x70;
*(unsigned long *)0xBE100B24 |= 0x70;
#ifdef USE_REFERENCE_BOARD
*DANUBE_LED_CON1 = 0x00000003;
*DANUBE_LED_CPU0 = 0x0000010;
*DANUBE_LED_CPU1 = 0x00000000;
*DANUBE_LED_AR = 0x00000000;
*DANUBE_LED_CON0 = 0x84000000;
#else
*DANUBE_LED_CON1 = 0x00000007;
*DANUBE_LED_CPU0 = 0x00001000;
*DANUBE_LED_CPU1 = 0x00000000;
*DANUBE_LED_AR = 0x00000000;
*DANUBE_LED_CON0 = 0x84000000;
#endif
}
#endif
/*
* Breath some life into the board...
*
* The first part of initialization is running from Flash memory;
* its main purpose is to initialize the RAM so that we
* can relocate the monitor code to RAM.
*/
/*
* All attempts to come up with a "common" initialization sequence
* that works for all boards and architectures failed: some of the
* requirements are just _too_ different. To get rid of the resulting
* mess of board dependend #ifdef'ed code we now make the whole
* initialization sequence configurable to the user.
*
* The requirements for any new initalization function is simple: it
* receives a pointer to the "global data" structure as it's only
* argument, and returns an integer return code, where 0 means
* "continue" and != 0 means "fatal error, hang the system".
*/
typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] = {
//timer_init,
//env_init, /* initialize environment */
#ifdef CONFIG_INCA_IP
incaip_set_cpuclk, /* set cpu clock according to environment variable */
#endif
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
init_baudrate, /* initialze baudrate settings */
serial_init, /* serial communications setup */
console_init_f,
display_banner, /* say that we are here */
#endif
init_func_ram,
//checkboard,
NULL,
};
void bootstrap_board_init_f(ulong bootflag)
{
gd_t gd_data, *id;
bd_t *bd;
init_fnc_t **init_fnc_ptr;
ulong addr, addr_sp, len = (ulong)&uboot_end_bootstrap - BOOTSTRAP_CFG_MONITOR_BASE;
ulong *s;
ulong lzmaImageaddr = 0;
#ifdef CONFIG_PURPLE
void copy_code (ulong);
#endif
/* Pointer is writable since we allocated a register for it.
*/
gd = &gd_data;
/* compiler optimization barrier needed for GCC >= 3.4 */
__asm__ __volatile__("": : :"memory");
memset ((void *)gd, 0, sizeof (gd_t));
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0) {
hang ();
}
}
/*
* Now that we have DRAM mapped and working, we can
* relocate the code and continue running from DRAM.
*/
addr = CFG_SDRAM_BASE + gd->ram_size;
/* We can reserve some RAM "on top" here.
*/
/* round down to next 4 kB limit.
*/
addr &= ~(4096 - 1);
debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
/* Reserve memory for U-Boot code, data & bss
* round down to next 16 kB limit
*/
addr -= len;
addr &= ~(16 * 1024 - 1);
debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
/* Reserve memory for malloc() arena.
*/
addr_sp = addr - TOTAL_MALLOC_LEN;
debug ("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, addr_sp);
/*
* (permanently) allocate a Board Info struct
* and a permanent copy of the "global" data
*/
addr_sp -= sizeof(bd_t);
bd = (bd_t *)addr_sp;
gd->bd = bd;
debug ("Reserving %d Bytes for Board Info at: %08lx\n",
sizeof(bd_t), addr_sp);
addr_sp -= sizeof(gd_t);
id = (gd_t *)addr_sp;
debug ("Reserving %d Bytes for Global Data at: %08lx\n",
sizeof (gd_t), addr_sp);
/* Reserve memory for boot params.
*/
addr_sp -= CFG_BOOTPARAMS_LEN;
bd->bi_boot_params = addr_sp;
debug ("Reserving %dk for boot params() at: %08lx\n",
CFG_BOOTPARAMS_LEN >> 10, addr_sp);
/*
* Finally, we set up a new (bigger) stack.
*
* Leave some safety gap for SP, force alignment on 16 byte boundary
* Clear initial stack frame
*/
addr_sp -= 16;
addr_sp &= ~0xF;
s = (ulong *)addr_sp;
*s-- = 0;
*s-- = 0;
addr_sp = (ulong)s;
debug ("Stack Pointer at: %08lx\n", addr_sp);
/*
* Save local variables to board info struct
*/
bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
memcpy (id, (void *)gd, sizeof (gd_t));
/* On the purple board we copy the code in a special way
* in order to solve flash problems
*/
#ifdef CONFIG_PURPLE
copy_code(addr);
#endif
lzmaImageaddr = (ulong)&uboot_end_data_bootstrap;
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("\n relocating to address %08x ", addr);
#endif
bootstrap_relocate_code (addr_sp, id, addr);
/* NOTREACHED - relocate_code() does not return */
}
/************************************************************************
*
* This is the next part if the initialization sequence: we are now
* running from RAM and have a "normal" C environment, i. e. global
* data can be written, BSS has been cleared, the stack size in not
* that critical any more, etc.
*
************************************************************************
*/
#define CONFIG_LZMA
void bootstrap_board_init_r (gd_t *id, ulong dest_addr)
{
int i;
ulong addr;
ulong data, len, checksum;
ulong *len_ptr;
image_header_t header;
image_header_t *hdr = &header;
unsigned int destLen;
int (*fn)();
#if 1
#endif
/* initialize malloc() area */
mem_malloc_init(dest_addr);
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf("\n Compressed Image at %08x \n ", (BOOTSTRAP_CFG_MONITOR_BASE + ((ulong)&uboot_end_data_bootstrap - dest_addr)));
#endif
addr = (char *)(BOOTSTRAP_CFG_MONITOR_BASE + ((ulong)&uboot_end_data_bootstrap - dest_addr));
memmove (&header, (char *)addr, sizeof(image_header_t));
if (ntohl(hdr->ih_magic) != IH_MAGIC) {
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("Bad Magic Number at address 0x%08lx\n",addr);
#endif
return;
}
data = (ulong)&header;
len = sizeof(image_header_t);
checksum = ntohl(hdr->ih_hcrc);
hdr->ih_hcrc = 0;
if (crc32 (0, (char *)data, len) != checksum) {
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("Bad Header Checksum\n");
#endif
return;
}
data = addr + sizeof(image_header_t);
len = ntohl(hdr->ih_size);
len_ptr = (ulong *)data;
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("Disabling all the interrupts\n");
#endif
disable_interrupts();
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf (" Uncompressing UBoot Image ... \n" );
#endif
/*
* If we've got less than 4 MB of malloc() space,
* use slower decompression algorithm which requires
* at most 2300 KB of memory.
*/
destLen = 0x0;
#ifdef CONFIG_BZIP2
i = BZ2_bzBuffToBuffDecompress ((char*)ntohl(hdr->ih_load),
0x400000, (char *)data, len,
CFG_MALLOC_LEN < (4096 * 1024), 0);
if (i != BZ_OK) {
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("BUNZIP2 ERROR %d - must RESET board to recover\n", i);
#endif
return;
}
#endif /* CONFIG_BZIP2 */
#ifdef CONFIG_MICROBZIP2
i = micro_bzBuffToBuffDecompress ((char*)ntohl(hdr->ih_load),
&destLen, (char *)data, len,
CFG_MALLOC_LEN < (4096 * 1024), 0);
if (i != RETVAL_OK) {
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("MICRO_BUNZIP2 ERROR %d - must RESET board to recover\n", i);
#endif
//do_reset (cmdtp, flag, argc, argv);
return;
}
#endif
#ifdef CONFIG_LZMA
#if 0
i = lzmaBuffToBuffDecompress ((char*)ntohl(hdr->ih_load),
&destLen, (char *)data, len);
#endif
i = lzma_inflate ((unsigned char *)data, len, (unsigned char*)ntohl(hdr->ih_load), &destLen);
if (i != LZMA_RESULT_OK) {
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf ("LZMA ERROR %d - must RESET board to recover\n", i);
#endif
//do_reset (cmdtp, flag, argc, argv);
return;
}
#endif
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
printf (" Uncompression completed successfully with destLen %d\n ",destLen );
#endif
fn = ntohl(hdr->ih_load);
(*fn)();
hang ();
}
void hang (void)
{
#ifdef DEBUG_ENABLE_BOOTSTRAP_PRINTF
puts ("### ERROR ### Please RESET the board ###\n");
#endif
for (;;);
}