mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 14:40:41 +00:00
a1f4a3dd05
- update mach-types.h to latest arm.linux.org.uk master list - Set correct OMAP1610 bi_arch_number for build target * Patch by Curt Brune, 06 Jul 2004: evb4510: add support for timer interrupt; cleanup
381 lines
9 KiB
C
381 lines
9 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
*
|
|
* Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
|
|
*
|
|
* 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 <image.h>
|
|
#include <zlib.h>
|
|
#include <asm/byteorder.h>
|
|
#ifdef CONFIG_HAS_DATAFLASH
|
|
#include <dataflash.h>
|
|
#endif
|
|
|
|
/*cmd_boot.c*/
|
|
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
|
|
|
|
#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
|
|
defined (CONFIG_CMDLINE_TAG) || \
|
|
defined (CONFIG_INITRD_TAG) || \
|
|
defined (CONFIG_SERIAL_TAG) || \
|
|
defined (CONFIG_REVISION_TAG) || \
|
|
defined (CONFIG_VFD)
|
|
static void setup_start_tag (bd_t *bd);
|
|
|
|
# ifdef CONFIG_SETUP_MEMORY_TAGS
|
|
static void setup_memory_tags (bd_t *bd);
|
|
# endif
|
|
static void setup_commandline_tag (bd_t *bd, char *commandline);
|
|
|
|
#if 0
|
|
static void setup_ramdisk_tag (bd_t *bd);
|
|
#endif
|
|
# ifdef CONFIG_INITRD_TAG
|
|
static void setup_initrd_tag (bd_t *bd, ulong initrd_start,
|
|
ulong initrd_end);
|
|
# endif
|
|
static void setup_end_tag (bd_t *bd);
|
|
|
|
# if defined (CONFIG_VFD)
|
|
static void setup_videolfb_tag (gd_t *gd);
|
|
# endif
|
|
|
|
|
|
static struct tag *params;
|
|
#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
|
|
|
|
#ifdef CONFIG_SHOW_BOOT_PROGRESS
|
|
# include <status_led.h>
|
|
# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
|
|
#else
|
|
# define SHOW_BOOT_PROGRESS(arg)
|
|
#endif
|
|
|
|
extern image_header_t header; /* from cmd_bootm.c */
|
|
|
|
|
|
void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
|
|
ulong addr, ulong *len_ptr, int verify)
|
|
{
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
ulong len = 0, checksum;
|
|
ulong initrd_start, initrd_end;
|
|
ulong data;
|
|
void (*theKernel)(int zero, int arch, uint params);
|
|
image_header_t *hdr = &header;
|
|
bd_t *bd = gd->bd;
|
|
|
|
#ifdef CONFIG_CMDLINE_TAG
|
|
char *commandline = getenv ("bootargs");
|
|
#endif
|
|
|
|
theKernel = (void (*)(int, int, uint))ntohl(hdr->ih_ep);
|
|
|
|
/*
|
|
* Check if there is an initrd image
|
|
*/
|
|
if (argc >= 3) {
|
|
SHOW_BOOT_PROGRESS (9);
|
|
|
|
addr = simple_strtoul (argv[2], NULL, 16);
|
|
|
|
printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
|
|
|
|
/* Copy header so we can blank CRC field for re-calculation */
|
|
#ifdef CONFIG_HAS_DATAFLASH
|
|
if (addr_dataflash (addr)) {
|
|
read_dataflash (addr, sizeof (image_header_t),
|
|
(char *) &header);
|
|
} else
|
|
#endif
|
|
memcpy (&header, (char *) addr,
|
|
sizeof (image_header_t));
|
|
|
|
if (ntohl (hdr->ih_magic) != IH_MAGIC) {
|
|
printf ("Bad Magic Number\n");
|
|
SHOW_BOOT_PROGRESS (-10);
|
|
do_reset (cmdtp, flag, argc, argv);
|
|
}
|
|
|
|
data = (ulong) & header;
|
|
len = sizeof (image_header_t);
|
|
|
|
checksum = ntohl (hdr->ih_hcrc);
|
|
hdr->ih_hcrc = 0;
|
|
|
|
if (crc32 (0, (char *) data, len) != checksum) {
|
|
printf ("Bad Header Checksum\n");
|
|
SHOW_BOOT_PROGRESS (-11);
|
|
do_reset (cmdtp, flag, argc, argv);
|
|
}
|
|
|
|
SHOW_BOOT_PROGRESS (10);
|
|
|
|
print_image_hdr (hdr);
|
|
|
|
data = addr + sizeof (image_header_t);
|
|
len = ntohl (hdr->ih_size);
|
|
|
|
#ifdef CONFIG_HAS_DATAFLASH
|
|
if (addr_dataflash (addr)) {
|
|
read_dataflash (data, len, (char *) CFG_LOAD_ADDR);
|
|
data = CFG_LOAD_ADDR;
|
|
}
|
|
#endif
|
|
|
|
if (verify) {
|
|
ulong csum = 0;
|
|
|
|
printf (" Verifying Checksum ... ");
|
|
csum = crc32 (0, (char *) data, len);
|
|
if (csum != ntohl (hdr->ih_dcrc)) {
|
|
printf ("Bad Data CRC\n");
|
|
SHOW_BOOT_PROGRESS (-12);
|
|
do_reset (cmdtp, flag, argc, argv);
|
|
}
|
|
printf ("OK\n");
|
|
}
|
|
|
|
SHOW_BOOT_PROGRESS (11);
|
|
|
|
if ((hdr->ih_os != IH_OS_LINUX) ||
|
|
(hdr->ih_arch != IH_CPU_ARM) ||
|
|
(hdr->ih_type != IH_TYPE_RAMDISK)) {
|
|
printf ("No Linux ARM Ramdisk Image\n");
|
|
SHOW_BOOT_PROGRESS (-13);
|
|
do_reset (cmdtp, flag, argc, argv);
|
|
}
|
|
|
|
#if defined(CONFIG_B2) || defined(CONFIG_EVB4510)
|
|
/*
|
|
*we need to copy the ramdisk to SRAM to let Linux boot
|
|
*/
|
|
memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
|
|
data = ntohl(hdr->ih_load);
|
|
#endif /* CONFIG_B2 || CONFIG_EVB4510 */
|
|
|
|
/*
|
|
* Now check if we have a multifile image
|
|
*/
|
|
} else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
|
|
ulong tail = ntohl (len_ptr[0]) % 4;
|
|
int i;
|
|
|
|
SHOW_BOOT_PROGRESS (13);
|
|
|
|
/* skip kernel length and terminator */
|
|
data = (ulong) (&len_ptr[2]);
|
|
/* skip any additional image length fields */
|
|
for (i = 1; len_ptr[i]; ++i)
|
|
data += 4;
|
|
/* add kernel length, and align */
|
|
data += ntohl (len_ptr[0]);
|
|
if (tail) {
|
|
data += 4 - tail;
|
|
}
|
|
|
|
len = ntohl (len_ptr[1]);
|
|
|
|
} else {
|
|
/*
|
|
* no initrd image
|
|
*/
|
|
SHOW_BOOT_PROGRESS (14);
|
|
|
|
len = data = 0;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (!data) {
|
|
printf ("No initrd\n");
|
|
}
|
|
#endif
|
|
|
|
if (data) {
|
|
initrd_start = data;
|
|
initrd_end = initrd_start + len;
|
|
} else {
|
|
initrd_start = 0;
|
|
initrd_end = 0;
|
|
}
|
|
|
|
SHOW_BOOT_PROGRESS (15);
|
|
|
|
debug ("## Transferring control to Linux (at address %08lx) ...\n",
|
|
(ulong) theKernel);
|
|
|
|
#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
|
|
defined (CONFIG_CMDLINE_TAG) || \
|
|
defined (CONFIG_INITRD_TAG) || \
|
|
defined (CONFIG_SERIAL_TAG) || \
|
|
defined (CONFIG_REVISION_TAG) || \
|
|
defined (CONFIG_VFD)
|
|
setup_start_tag (bd);
|
|
#ifdef CONFIG_SERIAL_TAG
|
|
setup_serial_tag (¶ms);
|
|
#endif
|
|
#ifdef CONFIG_REVISION_TAG
|
|
setup_revision_tag (¶ms);
|
|
#endif
|
|
#ifdef CONFIG_SETUP_MEMORY_TAGS
|
|
setup_memory_tags (bd);
|
|
#endif
|
|
#ifdef CONFIG_CMDLINE_TAG
|
|
setup_commandline_tag (bd, commandline);
|
|
#endif
|
|
#ifdef CONFIG_INITRD_TAG
|
|
if (initrd_start && initrd_end)
|
|
setup_initrd_tag (bd, initrd_start, initrd_end);
|
|
#endif
|
|
#if defined (CONFIG_VFD)
|
|
setup_videolfb_tag ((gd_t *) gd);
|
|
#endif
|
|
setup_end_tag (bd);
|
|
#endif
|
|
|
|
/* we assume that the kernel is in place */
|
|
printf ("\nStarting kernel ...\n\n");
|
|
|
|
#ifdef CONFIG_USB_DEVICE
|
|
{
|
|
extern void udc_disconnect (void);
|
|
udc_disconnect ();
|
|
}
|
|
#endif
|
|
|
|
cleanup_before_linux ();
|
|
|
|
theKernel (0, bd->bi_arch_number, bd->bi_boot_params);
|
|
}
|
|
|
|
|
|
#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
|
|
defined (CONFIG_CMDLINE_TAG) || \
|
|
defined (CONFIG_INITRD_TAG) || \
|
|
defined (CONFIG_SERIAL_TAG) || \
|
|
defined (CONFIG_REVISION_TAG) || \
|
|
defined (CONFIG_VFD)
|
|
static void setup_start_tag (bd_t *bd)
|
|
{
|
|
params = (struct tag *) bd->bi_boot_params;
|
|
|
|
params->hdr.tag = ATAG_CORE;
|
|
params->hdr.size = tag_size (tag_core);
|
|
|
|
params->u.core.flags = 0;
|
|
params->u.core.pagesize = 0;
|
|
params->u.core.rootdev = 0;
|
|
|
|
params = tag_next (params);
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_SETUP_MEMORY_TAGS
|
|
static void setup_memory_tags (bd_t *bd)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
|
|
params->hdr.tag = ATAG_MEM;
|
|
params->hdr.size = tag_size (tag_mem32);
|
|
|
|
params->u.mem.start = bd->bi_dram[i].start;
|
|
params->u.mem.size = bd->bi_dram[i].size;
|
|
|
|
params = tag_next (params);
|
|
}
|
|
}
|
|
#endif /* CONFIG_SETUP_MEMORY_TAGS */
|
|
|
|
|
|
static void setup_commandline_tag (bd_t *bd, char *commandline)
|
|
{
|
|
char *p;
|
|
|
|
if (!commandline)
|
|
return;
|
|
|
|
/* eat leading white space */
|
|
for (p = commandline; *p == ' '; p++);
|
|
|
|
/* skip non-existent command lines so the kernel will still
|
|
* use its default command line.
|
|
*/
|
|
if (*p == '\0')
|
|
return;
|
|
|
|
params->hdr.tag = ATAG_CMDLINE;
|
|
params->hdr.size =
|
|
(sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
|
|
|
|
strcpy (params->u.cmdline.cmdline, p);
|
|
|
|
params = tag_next (params);
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_INITRD_TAG
|
|
static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
|
|
{
|
|
/* an ATAG_INITRD node tells the kernel where the compressed
|
|
* ramdisk can be found. ATAG_RDIMG is a better name, actually.
|
|
*/
|
|
params->hdr.tag = ATAG_INITRD2;
|
|
params->hdr.size = tag_size (tag_initrd);
|
|
|
|
params->u.initrd.start = initrd_start;
|
|
params->u.initrd.size = initrd_end - initrd_start;
|
|
|
|
params = tag_next (params);
|
|
}
|
|
#endif /* CONFIG_INITRD_TAG */
|
|
|
|
|
|
#if defined (CONFIG_VFD)
|
|
static void setup_videolfb_tag (gd_t *gd)
|
|
{
|
|
/* An ATAG_VIDEOLFB node tells the kernel where and how large
|
|
* the framebuffer for video was allocated (among other things).
|
|
* Note that a _physical_ address is passed !
|
|
*
|
|
* We only use it to pass the address and size, the other entries
|
|
* in the tag_videolfb are not of interest.
|
|
*/
|
|
params->hdr.tag = ATAG_VIDEOLFB;
|
|
params->hdr.size = tag_size (tag_videolfb);
|
|
|
|
params->u.videolfb.lfb_base = (u32) gd->fb_base;
|
|
/* 7168 = 256*4*56/8 - actually 2 pages (8192 bytes) are allocated */
|
|
params->u.videolfb.lfb_size = 7168;
|
|
|
|
params = tag_next (params);
|
|
}
|
|
#endif
|
|
|
|
static void setup_end_tag (bd_t *bd)
|
|
{
|
|
params->hdr.tag = ATAG_NONE;
|
|
params->hdr.size = 0;
|
|
}
|
|
|
|
#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
|