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/*
* (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 <image.h>
#include <zlib.h>
#include <asm/byteorder.h>
#include <asm/addrspace.h>
DECLARE_GLOBAL_DATA_PTR;
#define LINUX_MAX_ENVS 256
#define LINUX_MAX_ARGS 256
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
static int linux_argc;
static char ** linux_argv;
static char ** linux_env;
static char * linux_env_p;
static int linux_env_idx;
static void linux_params_init (ulong start, char * commandline);
static void linux_env_set (char * env_name, char * env_val);
void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
image_header_t *hdr, int verify)
{
ulong rd_data, rd_len;
ulong initrd_start, initrd_end;
image_header_t *rd_hdr;
void (*theKernel) (int, char **, char **, int *);
char *commandline = getenv ("bootargs");
char env_buf[12];
theKernel =
(void (*)(int, char **, char **, int *))image_get_ep (hdr);
/*
* Check if there is an initrd image
*/
if (argc >= 3) {
show_boot_progress (9);
rd_hdr = (image_header_t *)simple_strtoul (argv[2], NULL, 16);
printf ("## Loading Ramdisk Image at %08lx ...\n", rd_hdr);
if (!image_check_magic (rd_hdr)) {
printf ("Bad Magic Number\n");
show_boot_progress (-10);
do_reset (cmdtp, flag, argc, argv);
}
if (!image_check_hcrc (rd_hdr)) {
printf ("Bad Header Checksum\n");
show_boot_progress (-11);
do_reset (cmdtp, flag, argc, argv);
}
show_boot_progress (10);
print_image_hdr (rd_hdr);
rd_data = image_get_data (rd_hdr);
rd_len = image_get_data_size (rd_hdr);
if (verify) {
printf (" Verifying Checksum ... ");
if (!image_check_dcrc (rd_hdr)) {
printf ("Bad Data CRC\n");
show_boot_progress (-12);
do_reset (cmdtp, flag, argc, argv);
}
printf ("OK\n");
}
show_boot_progress (11);
if (!image_check_os (rd_hdr, IH_OS_LINUX) ||
!image_check_arch (rd_hdr, IH_ARCH_MIPS) ||
!image_check_type (rd_hdr, IH_TYPE_RAMDISK)) {
printf ("No Linux MIPS Ramdisk Image\n");
show_boot_progress (-13);
do_reset (cmdtp, flag, argc, argv);
}
/*
* Now check if we have a multifile image
*/
} else if (image_check_type (hdr, IH_TYPE_MULTI)) {
/*
* Get second entry data start address and len
*/
show_boot_progress (13);
image_multi_getimg (hdr, 1, &rd_data, &rd_len);
} else {
/*
* no initrd image
*/
show_boot_progress (14);
rd_data = rd_len = 0;
}
#ifdef DEBUG
if (!rd_data) {
printf ("No initrd\n");
}
#endif
if (rd_data) {
initrd_start = rd_data;
initrd_end = initrd_start + rd_len;
} else {
initrd_start = 0;
initrd_end = 0;
}
show_boot_progress (15);
#ifdef DEBUG
printf ("## Transferring control to Linux (at address %08lx) ...\n",
(ulong) theKernel);
#endif
linux_params_init (UNCACHED_SDRAM (gd->bd->bi_boot_params), commandline);
#ifdef CONFIG_MEMSIZE_IN_BYTES
sprintf (env_buf, "%lu", gd->ram_size);
#ifdef DEBUG
printf ("## Giving linux memsize in bytes, %lu\n", gd->ram_size);
#endif
#else
sprintf (env_buf, "%lu", gd->ram_size >> 20);
#ifdef DEBUG
printf ("## Giving linux memsize in MB, %lu\n", gd->ram_size >> 20);
#endif
#endif /* CONFIG_MEMSIZE_IN_BYTES */
linux_env_set ("memsize", env_buf);
sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (initrd_start));
linux_env_set ("initrd_start", env_buf);
sprintf (env_buf, "0x%X", (uint) (initrd_end - initrd_start));
linux_env_set ("initrd_size", env_buf);
sprintf (env_buf, "0x%08X", (uint) (gd->bd->bi_flashstart));
linux_env_set ("flash_start", env_buf);
sprintf (env_buf, "0x%X", (uint) (gd->bd->bi_flashsize));
linux_env_set ("flash_size", env_buf);
/* we assume that the kernel is in place */
printf ("\nStarting kernel ...\n\n");
theKernel (linux_argc, linux_argv, linux_env, 0);
}
static void linux_params_init (ulong start, char *line)
{
char *next, *quote, *argp;
linux_argc = 1;
linux_argv = (char **) start;
linux_argv[0] = 0;
argp = (char *) (linux_argv + LINUX_MAX_ARGS);
next = line;
while (line && *line && linux_argc < LINUX_MAX_ARGS) {
quote = strchr (line, '"');
next = strchr (line, ' ');
while (next != NULL && quote != NULL && quote < next) {
/* we found a left quote before the next blank
* now we have to find the matching right quote
*/
next = strchr (quote + 1, '"');
if (next != NULL) {
quote = strchr (next + 1, '"');
next = strchr (next + 1, ' ');
}
}
if (next == NULL) {
next = line + strlen (line);
}
linux_argv[linux_argc] = argp;
memcpy (argp, line, next - line);
argp[next - line] = 0;
argp += next - line + 1;
linux_argc++;
if (*next)
next++;
line = next;
}
linux_env = (char **) (((ulong) argp + 15) & ~15);
linux_env[0] = 0;
linux_env_p = (char *) (linux_env + LINUX_MAX_ENVS);
linux_env_idx = 0;
}
static void linux_env_set (char *env_name, char *env_val)
{
if (linux_env_idx < LINUX_MAX_ENVS - 1) {
linux_env[linux_env_idx] = linux_env_p;
strcpy (linux_env_p, env_name);
linux_env_p += strlen (env_name);
strcpy (linux_env_p, "=");
linux_env_p += 1;
strcpy (linux_env_p, env_val);
linux_env_p += strlen (env_val);
linux_env_p++;
linux_env[++linux_env_idx] = 0;
}
}
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