/* * (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 <asm/byteorder.h> /* The SH kernel reads arguments from the empty zero page at location * 0 at the start of SDRAM. The following are copied from * arch/sh/kernel/setup.c and may require tweaking if the kernel sources * change. */ #define PARAM ((unsigned char *)CFG_SDRAM_BASE + 0x1000) #define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000)) #define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004)) #define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008)) #define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c)) #define INITRD_START (*(unsigned long *) (PARAM+0x010)) #define INITRD_SIZE (*(unsigned long *) (PARAM+0x014)) /* ... */ #define COMMAND_LINE ((char *) (PARAM+0x100)) #define RAMDISK_IMAGE_START_MASK 0x07FF extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); #ifdef CFG_DEBUG static void hexdump (unsigned char *buf, int len) { int i; for (i = 0; i < len; i++) { if ((i % 16) == 0) printf ("%s%08x: ", i ? "\n" : "", (unsigned int) &buf[i]); printf ("%02x ", buf[i]); } printf ("\n"); } #endif void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], bootm_headers_t *images) { ulong ep = 0; char *bootargs = getenv("bootargs"); /* find kernel entry point */ if (images->legacy_hdr_valid) { ep = image_get_ep (&images->legacy_hdr_os_copy); #if defined(CONFIG_FIT) } else if (images->fit_uname_os) { int ret = fit_image_get_entry (images->fit_hdr_os, images->fit_noffset_os, &ep); if (ret) { puts ("Can't get entry point property!\n"); goto error; } #endif } else { puts ("Could not find kernel entry point!\n"); goto error; } void (*kernel) (void) = (void (*)(void))ep; if (!images->autostart) return ; /* Setup parameters */ memset(PARAM, 0, 0x1000); /* Clear zero page */ strcpy(COMMAND_LINE, bootargs); kernel(); /* does not return */ return; error: if (images->autostart) do_reset (cmdtp, flag, argc, argv); return; }