X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fmtd%2Fredboot.c;h=5b58523e4d4ecd597c8d72e63ae702a7b5d02389;hb=5bd34c091a044d130601370c370f84b1c59f1627;hp=7b7ca5ab5ae41c27502c1f28800250263a2015f8;hpb=4060994c3e337b40e0f6fa8ce2cc178e021baf3d;p=powerpc.git

diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c
index 7b7ca5ab5a..5b58523e4d 100644
--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -1,5 +1,5 @@
 /*
- * $Id: redboot.c,v 1.18 2005/11/07 11:14:21 gleixner Exp $
+ * $Id: redboot.c,v 1.21 2006/03/30 18:34:37 bjd Exp $
  *
  * Parse RedBoot-style Flash Image System (FIS) tables and
  * produce a Linux partition array to match.
@@ -15,14 +15,14 @@
 
 struct fis_image_desc {
     unsigned char name[16];      // Null terminated name
-    unsigned long flash_base;    // Address within FLASH of image
-    unsigned long mem_base;      // Address in memory where it executes
-    unsigned long size;          // Length of image
-    unsigned long entry_point;   // Execution entry point
-    unsigned long data_length;   // Length of actual data
-    unsigned char _pad[256-(16+7*sizeof(unsigned long))];
-    unsigned long desc_cksum;    // Checksum over image descriptor
-    unsigned long file_cksum;    // Checksum over image data
+    uint32_t	  flash_base;    // Address within FLASH of image
+    uint32_t	  mem_base;      // Address in memory where it executes
+    uint32_t	  size;          // Length of image
+    uint32_t	  entry_point;   // Execution entry point
+    uint32_t	  data_length;   // Length of actual data
+    unsigned char _pad[256-(16+7*sizeof(uint32_t))];
+    uint32_t	  desc_cksum;    // Checksum over image descriptor
+    uint32_t	  file_cksum;    // Checksum over image data
 };
 
 struct fis_list {
@@ -85,12 +85,32 @@ static int parse_redboot_partitions(struct mtd_info *master,
 
 	numslots = (master->erasesize / sizeof(struct fis_image_desc));
 	for (i = 0; i < numslots; i++) {
-		if (buf[i].name[0] == 0xff) {
-			i = numslots;
+		if (!memcmp(buf[i].name, "FIS directory", 14)) {
+			/* This is apparently the FIS directory entry for the
+			 * FIS directory itself.  The FIS directory size is
+			 * one erase block; if the buf[i].size field is
+			 * swab32(erasesize) then we know we are looking at
+			 * a byte swapped FIS directory - swap all the entries!
+			 * (NOTE: this is 'size' not 'data_length'; size is
+			 * the full size of the entry.)
+			 */
+			if (swab32(buf[i].size) == master->erasesize) {
+				int j;
+				for (j = 0; j < numslots && buf[j].name[0] != 0xff; ++j) {
+					/* The unsigned long fields were written with the
+					 * wrong byte sex, name and pad have no byte sex.
+					 */
+					swab32s(&buf[j].flash_base);
+					swab32s(&buf[j].mem_base);
+					swab32s(&buf[j].size);
+					swab32s(&buf[j].entry_point);
+					swab32s(&buf[j].data_length);
+					swab32s(&buf[j].desc_cksum);
+					swab32s(&buf[j].file_cksum);
+				}
+			}
 			break;
 		}
-		if (!memcmp(buf[i].name, "FIS directory", 14))
-			break;
 	}
 	if (i == numslots) {
 		/* Didn't find it */
@@ -104,7 +124,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
 		struct fis_list *new_fl, **prev;
 
 		if (buf[i].name[0] == 0xff)
-			break;
+			continue;
 		if (!redboot_checksum(&buf[i]))
 			break;