/* * (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 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); int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) { void (*theKernel) (int, char **, char **, int *); char *commandline = getenv ("bootargs"); char env_buf[12]; char *cp; if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) return 1; /* find kernel entry point */ theKernel = (void (*)(int, char **, char **, int *))images->ep; 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", (ulong)gd->ram_size); debug ("## Giving linux memsize in bytes, %lu\n", (ulong)gd->ram_size); #else sprintf (env_buf, "%lu", (ulong)(gd->ram_size >> 20)); debug ("## Giving linux memsize in MB, %lu\n", (ulong)(gd->ram_size >> 20)); #endif /* CONFIG_MEMSIZE_IN_BYTES */ linux_env_set ("memsize", env_buf); sprintf (env_buf, "0x%08X", (uint) UNCACHED_SDRAM (images->rd_start)); linux_env_set ("initrd_start", env_buf); sprintf (env_buf, "0x%X", (uint) (images->rd_end - images->rd_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); cp = getenv("ethaddr"); if (cp != NULL) { linux_env_set("ethaddr", cp); } cp = getenv("eth1addr"); if (cp != NULL) { linux_env_set("eth1addr", cp); } /* we assume that the kernel is in place */ printf ("\nStarting kernel ...\n\n"); theKernel (linux_argc, linux_argv, linux_env, 0); /* does not return */ return 1; } 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; } }