image_header_t *hdr = &header;
#ifdef CONFIG_OF_FLAT_TREE
char *of_flat_tree = NULL;
+ ulong of_data = 0;
#endif
if ((s = getenv ("initrd_high")) != NULL) {
}
#ifdef CONFIG_OF_FLAT_TREE
- if(argc > 3) {
+ if(argc > 3) {
of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
hdr = (image_header_t *)of_flat_tree;
-
+
if (*(ulong *)of_flat_tree == OF_DT_HEADER) {
#ifndef CFG_NO_FLASH
- if (addr2info((ulong)of_flat_tree) != NULL) {
- printf ("Cannot modify flat device tree stored in flash\n" \
- "Copy to memory before using the bootm command\n");
- return;
- }
+ if (addr2info((ulong)of_flat_tree) != NULL)
+ of_data = (ulong)of_flat_tree;
#endif
} else if (ntohl(hdr->ih_magic) == IH_MAGIC) {
printf("## Flat Device Tree Image at %08lX\n", hdr);
printf ("ERROR: Load address overwrites Flat Device Tree uImage\n");
return;
}
-
+
printf(" Verifying Checksum ... ");
memmove (&header, (char *)hdr, sizeof(image_header_t));
checksum = ntohl(header.ih_hcrc);
printf ("ERROR: uImage data is not a flat device tree\n");
return;
}
-
- memmove((void *)ntohl(hdr->ih_load),
+
+ memmove((void *)ntohl(hdr->ih_load),
(void *)(of_flat_tree + sizeof(image_header_t)),
ntohl(hdr->ih_size));
of_flat_tree = (char *)ntohl(hdr->ih_load);
}
printf (" Booting using flat device tree at 0x%x\n",
of_flat_tree);
- } else if(getenv("disable_of") == NULL) {
- printf ("ERROR: bootm needs flat device tree as third argument\n");
- return;
+ } else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1]) && (len_ptr[2])) {
+ u_long tail = ntohl(len_ptr[0]) % 4;
+ int i;
+
+ /* skip kernel length, initrd length, and terminator */
+ of_data = (ulong)(&len_ptr[3]);
+ /* skip any additional image length fields */
+ for (i=2; len_ptr[i]; ++i)
+ of_data += 4;
+ /* add kernel length, and align */
+ of_data += ntohl(len_ptr[0]);
+ if (tail) {
+ of_data += 4 - tail;
+ }
+
+ /* add initrd length, and align */
+ tail = ntohl(len_ptr[1]) % 4;
+ of_data += ntohl(len_ptr[1]);
+ if (tail) {
+ of_data += 4 - tail;
+ }
+
+ if (((struct boot_param_header *)of_data)->magic != OF_DT_HEADER) {
+ printf ("ERROR: image is not a flat device tree\n");
+ return;
+ }
+
+ if (((struct boot_param_header *)of_data)->totalsize != ntohl(len_ptr[2])) {
+ printf ("ERROR: flat device tree size does not agree with image\n");
+ return;
+ }
}
#endif
if (!data) {
SHOW_BOOT_PROGRESS (15);
-#ifndef CONFIG_OF_FLAT_TREE
-
#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
unlock_ram_in_cache();
#endif
+#ifdef CONFIG_OF_FLAT_TREE
+ /* move of_flat_tree if needed */
+ if (of_data) {
+ ulong of_start, of_len;
+ of_len = ((struct boot_param_header *)of_data)->totalsize;
+ /* provide extra 8k pad */
+ if (initrd_start)
+ of_start = initrd_start - of_len - 8192;
+ else
+ of_start = (ulong)kbd - of_len - 8192;
+ of_start &= ~(4096 - 1); /* align on page */
+ debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
+ of_data, of_data + of_len - 1, of_len, of_len);
+
+ of_flat_tree = (char *)of_start;
+ printf (" Loading Device Tree to %08lx, end %08lx ... ",
+ of_start, of_start + of_len - 1);
+ memmove ((void *)of_start, (void *)of_data, of_len);
+ }
+#endif
+
/*
- * Linux Kernel Parameters:
+ * 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
*/
- (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
-
-#else
-
-#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
- unlock_ram_in_cache();
+#ifdef CONFIG_OF_FLAT_TREE
+ if (!of_flat_tree) /* no device tree; boot old style */
#endif
+ (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
+ /* does not return */
+
+#ifdef CONFIG_OF_FLAT_TREE
/*
- * Linux Kernel Parameters:
+ * Linux Kernel Parameters (passing device tree):
* r3: ptr to OF flat tree, followed by the board info data
* r4: physical pointer to the kernel itself
* r5: NULL
* r6: NULL
* r7: NULL
*/
- if (getenv("disable_of") != NULL)
- (*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end,
- cmd_start, cmd_end);
- else {
- ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
- /* ft_dump_blob(of_flat_tree); */
- (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
- }
-
+ ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
+ /* ft_dump_blob(of_flat_tree); */
+
+ (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
#endif
}
#endif /* CONFIG_PPC */