[new uImage] Define a API for image handling operations

- Add inline helper macros for basic header processing
- Move common non inline code common/image.c
- Replace direct header access with the API routines
- Rename IH_CPU_* to IH_ARCH_*

Signed-off-by: Marian Balakowicz <m8@semihalf.com>

1 files changed, 14 insertions, 25 deletions

diff --git a/lib_microblaze/microblaze_linux.c b/lib_microblaze/microblaze_linux.c
index 68b58d4..7cd9799 100644
--- a/lib_microblaze/microblaze_linux.c
+++ b/lib_microblaze/microblaze_linux.c
@@ -48,32 +48,24 @@ void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
 	char *commandline = getenv ("bootargs");
 	int i;
 
-	theKernel = (void (*)(char *))ntohl (hdr->ih_ep);
+	theKernel = (void (*)(char *))image_get_ep (hdr);
 
 	/* Check if there is an initrd image */
 	if (argc >= 3) {
 		show_boot_progress (9);
 
 		addr = simple_strtoul (argv[2], NULL, 16);
+		hdr = (image_header_t *)addr;
 
 		printf ("## Loading Ramdisk Image at %08lx ...\n", addr);
 
-		/* Copy header so we can blank CRC field for re-calculation */
-		memcpy (&header, (char *)addr, sizeof (image_header_t));
-
-		if (ntohl (hdr->ih_magic) != IH_MAGIC) {
+		if (!image_check_magic (hdr)) {
 			printf ("Bad Magic Number\n");
 			show_boot_progress (-10);
 			do_reset (cmdtp, flag, argc, argv);
 		}
 
-		data = (ulong) & header;
-		len = sizeof (image_header_t);
-
-		checksum = ntohl (hdr->ih_hcrc);
-		hdr->ih_hcrc = 0;
-
-		if (crc32 (0, (char *)data, len) != checksum) {
+		if (!image_check_magic (hdr)) {
 			printf ("Bad Header Checksum\n");
 			show_boot_progress (-11);
 			do_reset (cmdtp, flag, argc, argv);
@@ -83,15 +75,12 @@ void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
 
 		print_image_hdr (hdr);
 
-		data = addr + sizeof (image_header_t);
-		len = ntohl (hdr->ih_size);
+		data = image_get_data (hdr);
+		len = image_get_data_size (hdr);
 
 		if (verify) {
-			ulong csum = 0;
-
 			printf ("   Verifying Checksum ... ");
-			csum = crc32 (0, (char *)data, len);
-			if (csum != ntohl (hdr->ih_dcrc)) {
+			if (!image_check_dcrc (hdr)) {
 				printf ("Bad Data CRC\n");
 				show_boot_progress (-12);
 				do_reset (cmdtp, flag, argc, argv);
@@ -101,9 +90,9 @@ void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
 
 		show_boot_progress (11);
 
-		if ((hdr->ih_os != IH_OS_LINUX) ||
-		    (hdr->ih_arch != IH_CPU_MICROBLAZE) ||
-		    (hdr->ih_type != IH_TYPE_RAMDISK)) {
+		if (!image_check_os (hdr, IH_OS_LINUX) ||
+		    !image_check_arch (hdr, IH_ARCH_MICROBLAZE) ||
+		    !image_check_type (hdr, IH_TYPE_RAMDISK)) {
 			printf ("No Linux Microblaze Ramdisk Image\n");
 			show_boot_progress (-13);
 			do_reset (cmdtp, flag, argc, argv);
@@ -112,8 +101,8 @@ void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
 		/*
 		 * Now check if we have a multifile image
 		 */
-	} else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
-		ulong tail = ntohl (len_ptr[0]) % 4;
+	} else if (image_check_type (hdr, IH_TYPE_MULTI) && (len_ptr[1])) {
+		ulong tail = image_to_cpu (len_ptr[0]) % 4;
 
 		show_boot_progress (13);
 
@@ -123,12 +112,12 @@ void do_bootm_linux (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[],
 		for (i = 1; len_ptr[i]; ++i)
 			data += 4;
 		/* add kernel length, and align */
-		data += ntohl (len_ptr[0]);
+		data += image_to_cpu (len_ptr[0]);
 		if (tail) {
 			data += 4 - tail;
 		}
 
-		len = ntohl (len_ptr[1]);
+		len = image_to_cpu (len_ptr[1]);
 
 	} else {
 		/*