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-rw-r--r--lib_mips/bootm.c198
1 files changed, 198 insertions, 0 deletions
diff --git a/lib_mips/bootm.c b/lib_mips/bootm.c
new file mode 100644
index 0000000..e4c139e
--- /dev/null
+++ b/lib_mips/bootm.c
@@ -0,0 +1,198 @@
+/*
+ * (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);
+
+extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
+void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
+ bootm_headers_t *images)
+{
+ ulong initrd_start, initrd_end;
+ ulong ep = 0;
+ void (*theKernel) (int, char **, char **, int *);
+ char *commandline = getenv ("bootargs");
+ char env_buf[12];
+ int ret;
+
+ /* find kernel entry point */
+ if (images->legacy_hdr_valid) {
+ ep = image_get_ep (images->legacy_hdr_os);
+#if defined(CONFIG_FIT)
+ } else if (images->fit_uname_os) {
+ 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;
+ }
+ theKernel = (void (*)(int, char **, char **, int *))ep;
+
+ ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_MIPS,
+ &initrd_start, &initrd_end);
+ if (ret)
+ goto error;
+
+ 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);
+
+ if (!images->autostart)
+ return ;
+
+ /* 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;
+
+error:
+ if (images->autostart)
+ do_reset (cmdtp, flag, argc, argv);
+ return;
+}
+
+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;
+ }
+}