* Support for FDT in uImage format, error when using FDT from flash
Signed-off-by: Matthew McClintock <msm@freescale.com>
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index f1c0eb4..6eb258e 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -528,7 +528,7 @@
void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
image_header_t *hdr = &header;
#ifdef CONFIG_OF_FLAT_TREE
- char *of_flat_tree;
+ char *of_flat_tree = NULL;
#endif
if ((s = getenv ("initrd_high")) != NULL) {
@@ -737,14 +737,73 @@
}
#ifdef CONFIG_OF_FLAT_TREE
- if (argc >= 3)
- {
+ if(argc >= 3) {
of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
- printf ("Booting using flat device tree at 0x%x\n",
+ 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;
+ }
+#endif
+ } else if (ntohl(hdr->ih_magic) == IH_MAGIC) {
+ printf("## Flat Device Tree Image at %08lX\n", hdr);
+ print_image_hdr(hdr);
+
+ if ((ntohl(hdr->ih_load) < ((unsigned long)hdr + ntohl(hdr->ih_size) + sizeof(hdr))) &&
+ ((ntohl(hdr->ih_load) + ntohl(hdr->ih_size)) > (unsigned long)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);
+ header.ih_hcrc = 0;
+
+ if(checksum != crc32(0, (uchar *)&header, sizeof(image_header_t))) {
+ printf("ERROR: Flat Device Tree header checksum is invalid\n");
+ return;
+ }
+
+ checksum = ntohl(hdr->ih_dcrc);
+ addr = (ulong)((uchar *)(hdr) + sizeof(image_header_t));
+ len = ntohl(hdr->ih_size);
+
+ if(checksum != crc32(0, (uchar *)addr, len)) {
+ printf("ERROR: Flat Device Tree checksum is invalid\n");
+ return;
+ }
+ printf("OK\n");
+
+ if (ntohl(hdr->ih_type) != IH_TYPE_FLATDT) {
+ printf ("ERROR: uImage not Flat Device Tree type\n");
+ return;
+ }
+ if (ntohl(hdr->ih_comp) != IH_COMP_NONE) {
+ printf("ERROR: uImage is not uncompressed\n");
+ return;
+ }
+ if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) {
+ printf ("ERROR: uImage data is not a flat device tree\n");
+ return;
+ }
+
+ 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);
+ } else {
+ printf ("Did not find a flat flat device tree at address %08lX\n", of_flat_tree);
+ return;
+ }
+ printf (" Booting using flat device tree at 0x%x\n",
of_flat_tree);
}
#endif
-
if (!data) {
debug ("No initrd\n");
}
@@ -1272,6 +1331,7 @@
case IH_TYPE_MULTI: type = "Multi-File Image"; break;
case IH_TYPE_FIRMWARE: type = "Firmware"; break;
case IH_TYPE_SCRIPT: type = "Script"; break;
+ case IH_TYPE_FLATDT: type = "Flat Device Tree"; break;
default: type = "Unknown Image"; break;
}
diff --git a/include/image.h b/include/image.h
index 139df0b..ea7e953 100644
--- a/include/image.h
+++ b/include/image.h
@@ -124,6 +124,7 @@
#define IH_TYPE_FIRMWARE 5 /* Firmware Image */
#define IH_TYPE_SCRIPT 6 /* Script file */
#define IH_TYPE_FILESYSTEM 7 /* Filesystem Image (any type) */
+#define IH_TYPE_FLATDT 8 /* Binary Flat Device Tree Blob */
/*
* Compression Types
diff --git a/tools/mkimage.c b/tools/mkimage.c
index fea3e5b..d6000e0 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -130,6 +130,7 @@
{ IH_TYPE_RAMDISK, "ramdisk", "RAMDisk Image", },
{ IH_TYPE_SCRIPT, "script", "Script", },
{ IH_TYPE_STANDALONE, "standalone", "Standalone Program", },
+ { IH_TYPE_FLATDT, "flat_dt", "Flat Device Tree", },
{ -1, "", "", },
};