#include <watchdog.h>
#include <environment.h>
#include <asm/byteorder.h>
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# include <status_led.h>
+#endif
DECLARE_GLOBAL_DATA_PTR;
+extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
#define PHYSADDR(x) x
#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);
+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[],
- image_header_t *hdr, int verify)
+ bootm_headers_t *images)
{
ulong sp;
ulong rd_data_start, rd_data_end, rd_len;
- ulong initrd_high;
ulong initrd_start, initrd_end;
- int initrd_copy_to_ram = 1;
+ int ret;
ulong cmd_start, cmd_end;
- char *cmdline;
- char *s;
- bd_t *kbd;
- void (*kernel) (bd_t *, ulong, ulong, ulong, ulong);
-
- if ((s = getenv("initrd_high")) != NULL) {
- /* a value of "no" or a similar string will act like 0,
- * turning the "load high" feature off. This is intentional.
- */
- initrd_high = simple_strtoul(s, NULL, 16);
- if (initrd_high == ~0)
- initrd_copy_to_ram = 0;
- } else { /* not set, no restrictions to load high */
- initrd_high = ~0;
- }
+ ulong bootmap_base;
+ bd_t *kbd;
+ ulong ep = 0;
+ void (*kernel) (bd_t *, ulong, ulong, ulong, ulong);
+ struct lmb *lmb = images->lmb;
-#ifdef CONFIG_LOGBUFFER
- kbd = gd->bd;
- /* Prevent initrd from overwriting logbuffer */
- if (initrd_high < (kbd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD))
- initrd_high = kbd->bi_memsize - LOGBUFF_LEN - LOGBUFF_OVERHEAD;
- debug("## Logbuffer at 0x%08lX ", kbd->bi_memsize - LOGBUFF_LEN);
-#endif
+ bootmap_base = getenv_bootm_low();
/*
* Booting a (Linux) kernel image
* memory, which means far enough below the current stack
* pointer.
*/
- asm("movel %%a7, %%d0\n"
- "movel %%d0, %0\n": "=d"(sp): :"%d0");
-
- debug("## Current stack ends at 0x%08lX ", sp);
-
- sp -= 2048; /* just to be sure */
- if (sp > CFG_BOOTMAPSZ)
- sp = CFG_BOOTMAPSZ;
- sp &= ~0xF;
-
- debug("=> set upper limit to 0x%08lX\n", sp);
-
- cmdline = (char *)((sp - CFG_BARGSIZE) & ~0xF);
- kbd = (bd_t *) (((ulong) cmdline - sizeof(bd_t)) & ~0xF);
-
- if ((s = getenv("bootargs")) == NULL)
- s = "";
-
- strcpy(cmdline, s);
-
- cmd_start = (ulong) & cmdline[0];
- cmd_end = cmd_start + strlen(cmdline);
-
- *kbd = *(gd->bd);
-
-#ifdef DEBUG
- printf("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
+ sp = get_sp();
+ debug ("## Current stack ends at 0x%08lx ", sp);
+
+ /* adjust sp by 1K to be safe */
+ sp -= 1024;
+ lmb_reserve(lmb, sp, (CFG_SDRAM_BASE + gd->ram_size - sp));
+
+ /* 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;
+ }
- do_bdinfo(NULL, 0, 0, NULL);
+ /* 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 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) {
+ fit_unsupported_reset ("M68K linux bootm");
+ do_reset (cmdtp, flag, argc, argv);
#endif
-
- if ((s = getenv("clocks_in_mhz")) != NULL) {
- /* convert all clock information to MHz */
- kbd->bi_intfreq /= 1000000L;
- kbd->bi_busfreq /= 1000000L;
+ } else {
+ puts ("Could not find kernel entry point!\n");
+ do_reset (cmdtp, flag, argc, argv);
}
+ kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))ep;
- kernel =
- (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr);
-
- get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
+ /* find ramdisk */
+ ret = boot_get_ramdisk (cmdtp, flag, argc, argv, images,
IH_ARCH_M68K, &rd_data_start, &rd_data_end);
- rd_len = rd_data_end - rd_data_start;
- if (rd_data_start) {
- if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */
- initrd_start = rd_data_start;
- initrd_end = rd_data_end;
- } else {
- initrd_start = (ulong) kbd - rd_len;
- initrd_start &= ~(4096 - 1); /* align on page */
-
- if (initrd_high) {
- ulong nsp;
-
- /*
- * the inital ramdisk does not need to be within
- * CFG_BOOTMAPSZ as it is not accessed until after
- * the mm system is initialised.
- *
- * do the stack bottom calculation again and see if
- * the initrd will fit just below the monitor stack
- * bottom without overwriting the area allocated
- * above for command line args and board info.
- */
- asm("movel %%a7, %%d0\n"
- "movel %%d0, %0\n": "=d"(nsp): :"%d0");
-
- nsp -= 2048; /* just to be sure */
- nsp &= ~0xF;
-
- if (nsp > initrd_high) /* limit as specified */
- nsp = initrd_high;
-
- nsp -= rd_len;
- nsp &= ~(4096 - 1); /* align on page */
-
- if (nsp >= sp)
- initrd_start = nsp;
- }
-
- SHOW_BOOT_PROGRESS(12);
-
- debug
- ("## initrd at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
- rd_data_start, rd_data_end - 1, rd_len, rd_len);
-
- initrd_end = initrd_start + rd_len;
- printf(" Loading Ramdisk to %08lx, end %08lx ... ",
- initrd_start, initrd_end);
-
- memmove_wd((void *)initrd_start,
- (void *)rd_data_start, rd_len, CHUNKSZ);
-
- puts("OK\n");
- }
- } else {
- initrd_start = 0;
- initrd_end = 0;
- }
+ if (ret)
+ goto error;
+
+ rd_len = rd_data_end - rd_data_start;
+ ret = boot_ramdisk_high (lmb, rd_data_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);
+ if (!images->autostart)
+ return;
/*
* Linux Kernel Parameters (passing board info data):
* r3: ptr to board info data
*/
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
/* does not return */
+ return ;
+
+error:
+ if (images->autostart)
+ do_reset (cmdtp, flag, argc, argv);
+ return ;
+}
+
+static ulong get_sp (void)
+{
+ ulong sp;
+
+ asm("movel %%a7, %%d0\n"
+ "movel %%d0, %0\n": "=d"(sp): :"%d0");
+
+ 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;
+ }
}
projects / karo-tx-uboot.git / blobdiff