#include <common.h>
#include <command.h>
#include <image.h>
-#include <zlib.h>
+#include <u-boot/zlib.h>
#include <bzlib.h>
#include <watchdog.h>
#include <environment.h>
#include <asm/byteorder.h>
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# include <status_led.h>
+#endif
DECLARE_GLOBAL_DATA_PTR;
#define LINUX_MAX_ENVS 256
#define LINUX_MAX_ARGS 256
-#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
-
static ulong get_sp (void);
+static void set_clocks_in_mhz (bd_t *kbd);
-void do_bootm_linux(cmd_tbl_t * cmdtp, int flag,
- int argc, char *argv[],
- image_header_t *hdr, int verify)
+void arch_lmb_reserve(struct lmb *lmb)
{
- ulong sp_limit;
-
- ulong rd_data_start, rd_data_end, rd_len;
- ulong initrd_start, initrd_end;
-
- ulong cmd_start, cmd_end;
- char *cmdline;
- char *s;
- bd_t *kbd;
- void (*kernel) (bd_t *, ulong, ulong, ulong, ulong);
+ ulong sp;
/*
* Booting a (Linux) kernel image
*
* Allocate space for command line and board info - the
* address should be as high as possible within the reach of
- * the kernel (see CFG_BOOTMAPSZ settings), but in unused
+ * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
* memory, which means far enough below the current stack
* pointer.
*/
- sp_limit = get_sp();
-
- debug("## Current stack ends at 0x%08lX ", sp_limit);
-
- sp_limit -= 2048; /* just to be sure */
- if (sp_limit > CFG_BOOTMAPSZ)
- sp_limit = CFG_BOOTMAPSZ;
- sp_limit &= ~0xF;
+ sp = get_sp();
+ debug ("## Current stack ends at 0x%08lx ", sp);
- debug("=> set upper limit to 0x%08lX\n", sp_limit);
-
- cmdline = (char *)((sp_limit - CFG_BARGSIZE) & ~0xF);
- kbd = (bd_t *) (((ulong) cmdline - sizeof(bd_t)) & ~0xF);
-
- if ((s = getenv("bootargs")) == NULL)
- s = "";
-
- strcpy(cmdline, s);
+ /* adjust sp by 1K to be safe */
+ sp -= 1024;
+ lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + gd->ram_size - sp));
+}
- cmd_start = (ulong) & cmdline[0];
- cmd_end = cmd_start + strlen(cmdline);
+int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+{
+ ulong rd_len;
+ ulong initrd_start, initrd_end;
+ int ret;
- *kbd = *(gd->bd);
+ ulong cmd_start, cmd_end;
+ ulong bootmap_base;
+ bd_t *kbd;
+ void (*kernel) (bd_t *, ulong, ulong, ulong, ulong);
+ struct lmb *lmb = &images->lmb;
-#ifdef DEBUG
- printf("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
+ if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
+ return 1;
- do_bdinfo(NULL, 0, 0, NULL);
-#endif
+ bootmap_base = getenv_bootm_low();
- if ((s = getenv("clocks_in_mhz")) != NULL) {
- /* convert all clock information to MHz */
- kbd->bi_intfreq /= 1000000L;
- kbd->bi_busfreq /= 1000000L;
+ /* allocate space and init command line */
+ ret = boot_get_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
+ if (ret) {
+ puts("ERROR with allocation of cmdline\n");
+ goto error;
}
- /* find kernel */
- kernel =
- (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr);
+ /* allocate space for kernel copy of board info */
+ ret = boot_get_kbd (lmb, &kbd, bootmap_base);
+ if (ret) {
+ puts("ERROR with allocation of kernel bd\n");
+ goto error;
+ }
+ set_clocks_in_mhz(kbd);
- /* find ramdisk */
- get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
- IH_ARCH_M68K, &rd_data_start, &rd_data_end);
+ kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))images->ep;
- rd_len = rd_data_end - rd_data_start;
- ramdisk_high (rd_data_start, rd_len, kdb, sp_limit, get_sp (),
+ rd_len = images->rd_end - images->rd_start;
+ ret = boot_ramdisk_high (lmb, images->rd_start, rd_len,
&initrd_start, &initrd_end);
+ if (ret)
+ goto error;
debug("## Transferring control to Linux (at address %08lx) ...\n",
(ulong) kernel);
- SHOW_BOOT_PROGRESS(15);
+ show_boot_progress (15);
/*
* Linux Kernel Parameters (passing board info data):
- * r3: ptr to board info data
- * r4: initrd_start or 0 if no initrd
- * r5: initrd_end - unused if r4 is 0
- * r6: Start of command line string
- * r7: End of command line string
+ * sp+00: Ignore, side effect of using jsr to jump to kernel
+ * sp+04: ptr to board info data
+ * sp+08: initrd_start or 0 if no initrd
+ * sp+12: initrd_end - unused if initrd_start is 0
+ * sp+16: Start of command line string
+ * sp+20: End of command line string
*/
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
/* does not return */
+error:
+ return 1;
}
static ulong get_sp (void)
return sp;
}
+
+static void set_clocks_in_mhz (bd_t *kbd)
+{
+ char *s;
+
+ if ((s = getenv("clocks_in_mhz")) != NULL) {
+ /* convert all clock information to MHz */
+ kbd->bi_intfreq /= 1000000L;
+ kbd->bi_busfreq /= 1000000L;
+ }
+}