bootm: make use of legacy image format configurable

make the use of legacy image format configurable through the config define CONFIG_IMAGE_FORMAT_LEGACY. When relying on signed FIT images with required signature check the legacy image format should be disabled. Therefore introduce this new define and enable legacy image format if CONFIG_FIT_SIGNATURE is not set. If CONFIG_FIT_SIGNATURE is set disable per default the legacy image format. Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Lars Steubesand <lars.steubesand@philips.com> Cc: Mike Pearce <mike@kaew.be> Cc: Wolfgang Denk <wd@denx.de> Cc: Tom Rini <trini@ti.com> Cc: Michal Simek <monstr@monstr.eu> Acked-by: Simon Glass <sjg@chromium.org>
2014-05-28 11:33:33 +02:00 · 2014-05-28 11:33:33 +02:00 · 21d29f7f9f
commit 21d29f7f9f
parent 5f65826b1b
14 changed files with 97 additions and 11 deletions
--- a/18
+++ b/18
@ -3200,6 +3200,19 @@ FIT uImage format:
 -150	common/cmd_nand.c	Incorrect FIT image format
  151	common/cmd_nand.c	FIT image format OK

+- legacy image format:
+		CONFIG_IMAGE_FORMAT_LEGACY
+		enables the legacy image format support in U-Boot.
+
+		Default:
+		enabled if CONFIG_FIT_SIGNATURE is not defined.
+
+		CONFIG_DISABLE_IMAGE_LEGACY
+		disable the legacy image format
+
+		This define is introduced, as the legacy image format is
+		enabled per default for backward compatibility.
+
 - FIT image support:
 		CONFIG_FIT
 		Enable support for the FIT uImage format.
@ -3216,6 +3229,11 @@ FIT uImage format:
 		using a hash signed and verified using RSA. See
 		doc/uImage.FIT/signature.txt for more details.

+		WARNING: When relying on signed FIT images with required
+		signature check the legacy image format is default
+		disabled. If a board need legacy image format support
+		enable this through CONFIG_IMAGE_FORMAT_LEGACY
+
 - Standalone program support:
 		CONFIG_STANDALONE_LOAD_ADDR

--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@ -230,6 +230,7 @@ static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,

 	/* get image parameters */
 	switch (genimg_get_format(os_hdr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		images.os.type = image_get_type(os_hdr);
 		images.os.comp = image_get_comp(os_hdr);
@ -238,6 +239,7 @@ static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
 		images.os.end = image_get_image_end(os_hdr);
 		images.os.load = image_get_load(os_hdr);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		if (fit_image_get_type(images.fit_hdr_os,
@ -847,6 +849,7 @@ int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
 	return 0;
 }

+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 /**
 * image_get_kernel - verify legacy format kernel image
 * @img_addr: in RAM address of the legacy format image to be verified
@ -897,6 +900,7 @@ static image_header_t *image_get_kernel(ulong img_addr, int verify)
 	}
 	return hdr;
 }
+#endif

 /**
 * boot_get_kernel - find kernel image
@ -914,7 +918,9 @@ static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 		char * const argv[], bootm_headers_t *images, ulong *os_data,
 		ulong *os_len)
 {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	image_header_t	*hdr;
+#endif
 	ulong		img_addr;
 	const void *buf;
 #if defined(CONFIG_FIT)
@ -952,6 +958,7 @@ static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 	*os_data = *os_len = 0;
 	buf = map_sysmem(img_addr, 0);
 	switch (genimg_get_format(buf)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		printf("## Booting kernel from Legacy Image at %08lx ...\n",
 				img_addr);
@ -994,6 +1001,7 @@ static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 		images->legacy_hdr_valid = 1;
 		bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		os_noffset = fit_image_load(images, FIT_KERNEL_PROP,
@ -1131,6 +1139,7 @@ static int image_info(ulong addr)
 	printf("\n## Checking Image at %08lx ...\n", addr);

 	switch (genimg_get_format(hdr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		puts("   Legacy image found\n");
 		if (!image_check_magic(hdr)) {
@ -1152,6 +1161,7 @@ static int image_info(ulong addr)
 		}
 		puts("OK\n");
 		return 0;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		puts("   FIT image found\n");
@ -1211,6 +1221,7 @@ static int do_imls_nor(void)
 				goto next_sector;

 			switch (genimg_get_format(hdr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 			case IMAGE_FORMAT_LEGACY:
 				if (!image_check_hcrc(hdr))
 					goto next_sector;
@ -1225,6 +1236,7 @@ static int do_imls_nor(void)
 					puts("OK\n");
 				}
 				break;
+#endif
 #if defined(CONFIG_FIT)
 			case IMAGE_FORMAT_FIT:
 				if (!fit_check_format(hdr))
@ -1359,12 +1371,14 @@ static int do_imls_nand(void)
 			}

 			switch (genimg_get_format(buffer)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 			case IMAGE_FORMAT_LEGACY:
 				header = (const image_header_t *)buffer;

 				len = image_get_image_size(header);
 				nand_imls_legacyimage(nand, nand_dev, off, len);
 				break;
+#endif
 #if defined(CONFIG_FIT)
 			case IMAGE_FORMAT_FIT:
 				len = fit_get_size(buffer);
--- a/common/cmd_disk.c
+++ b/common/cmd_disk.c
@ -17,7 +17,9 @@ int common_diskboot(cmd_tbl_t *cmdtp, const char *intf, int argc,
 	ulong addr = CONFIG_SYS_LOAD_ADDR;
 	ulong cnt;
 	disk_partition_t info;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	image_header_t *hdr;
+#endif
 	block_dev_desc_t *dev_desc;

 #if defined(CONFIG_FIT)
@ -62,6 +64,7 @@ int common_diskboot(cmd_tbl_t *cmdtp, const char *intf, int argc,
 	bootstage_mark(BOOTSTAGE_ID_IDE_PART_READ);

 	switch (genimg_get_format((void *) addr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		hdr = (image_header_t *) addr;

@ -78,6 +81,7 @@ int common_diskboot(cmd_tbl_t *cmdtp, const char *intf, int argc,

 		cnt = image_get_image_size(hdr);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		fit_hdr = (const void *) addr;
--- a/common/cmd_fdc.c
+++ b/common/cmd_fdc.c
@ -635,7 +635,9 @@ int do_fdcboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	FD_GEO_STRUCT *pFG = (FD_GEO_STRUCT *)floppy_type;
 	FDC_COMMAND_STRUCT *pCMD = &cmd;
 	unsigned long addr,imsize;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	image_header_t *hdr;  /* used for fdc boot */
+#endif
 	unsigned char boot_drive;
 	int i,nrofblk;
 #if defined(CONFIG_FIT)
@ -689,12 +691,14 @@ int do_fdcboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	}

 	switch (genimg_get_format ((void *)addr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		hdr = (image_header_t *)addr;
 		image_print_contents (hdr);

 		imsize = image_get_image_size (hdr);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		fit_hdr = (const void *)addr;
--- a/common/cmd_fpga.c
+++ b/common/cmd_fpga.c
@ -201,6 +201,7 @@ int do_fpga(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 #if defined(CONFIG_CMD_FPGA_LOADMK)
 	case FPGA_LOADMK:
 		switch (genimg_get_format(fpga_data)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 		case IMAGE_FORMAT_LEGACY:
 			{
 				image_header_t *hdr =
@ -229,6 +230,7 @@ int do_fpga(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 					       BIT_FULL);
 			}
 			break;
+#endif
 #if defined(CONFIG_FIT)
 		case IMAGE_FORMAT_FIT:
 			{
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@ -898,7 +898,9 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 	int r;
 	char *s;
 	size_t cnt;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	image_header_t *hdr;
+#endif
 #if defined(CONFIG_FIT)
 	const void *fit_hdr = NULL;
 #endif
@ -924,6 +926,7 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 	bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);

 	switch (genimg_get_format ((void *)addr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		hdr = (image_header_t *)addr;

@ -932,6 +935,7 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,

 		cnt = image_get_image_size (hdr);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		fit_hdr = (const void *)addr;
--- a/common/cmd_source.c
+++ b/common/cmd_source.c
@ -29,7 +29,9 @@ int
 source (ulong addr, const char *fit_uname)
 {
 	ulong		len;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	const image_header_t *hdr;
+#endif
 	ulong		*data;
 	int		verify;
 	void *buf;
@ -44,6 +46,7 @@ source (ulong addr, const char *fit_uname)

 	buf = map_sysmem(addr, 0);
 	switch (genimg_get_format(buf)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		hdr = buf;

@ -84,6 +87,7 @@ source (ulong addr, const char *fit_uname)
 		 */
 		while (*data++);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		if (fit_uname == NULL) {
--- a/common/cmd_ximg.c
+++ b/common/cmd_ximg.c
@ -32,10 +32,13 @@ do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
 	ulong		addr = load_addr;
 	ulong		dest = 0;
-	ulong		data, len, count;
+	ulong		data, len;
 	int		verify;
 	int		part = 0;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
+	ulong		count;
 	image_header_t	*hdr = NULL;
+#endif
 #if defined(CONFIG_FIT)
 	const char	*uname = NULL;
 	const void*	fit_hdr;
@ -64,6 +67,7 @@ do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 	}

 	switch (genimg_get_format((void *)addr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:

 		printf("## Copying part %d from legacy image "
@ -114,6 +118,7 @@ do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])

 		image_multi_getimg(hdr, part, &data, &len);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		if (uname == NULL) {
@ -211,7 +216,7 @@ do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 			}
 			break;
 #endif
-#if defined(CONFIG_BZIP2)
+#if defined(CONFIG_BZIP2) && defined(CONFIG_IMAGE_FORMAT_LEGACY)
 		case IH_COMP_BZIP2:
 			{
 				int i;
--- a/common/image-fdt.c
+++ b/common/image-fdt.c
@ -29,6 +29,7 @@ static void fdt_error(const char *msg)
 	puts(" - must RESET the board to recover.\n");
 }

+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 static const image_header_t *image_get_fdt(ulong fdt_addr)
 {
 	const image_header_t *fdt_hdr = map_sysmem(fdt_addr, 0);
@ -61,6 +62,7 @@ static const image_header_t *image_get_fdt(ulong fdt_addr)
 	}
 	return fdt_hdr;
 }
+#endif

 /**
 * boot_fdt_add_mem_rsv_regions - Mark the memreserve sections as unusable
@ -220,11 +222,13 @@ error:
 int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
 		bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
 {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	const image_header_t *fdt_hdr;
+	ulong		load, load_end;
+	ulong		image_start, image_data, image_end;
+#endif
 	ulong		fdt_addr;
 	char		*fdt_blob = NULL;
-	ulong		image_start, image_data, image_end;
-	ulong		load, load_end;
 	void		*buf;
 #if defined(CONFIG_FIT)
 	const char	*fit_uname_config = images->fit_uname_cfg;
@ -298,6 +302,7 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
 		 */
 		buf = map_sysmem(fdt_addr, 0);
 		switch (genimg_get_format(buf)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 		case IMAGE_FORMAT_LEGACY:
 			/* verify fdt_addr points to a valid image header */
 			printf("## Flattened Device Tree from Legacy Image at %08lx\n",
@ -337,6 +342,7 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,

 			fdt_addr = load;
 			break;
+#endif
 		case IMAGE_FORMAT_FIT:
 			/*
 			 * This case will catch both: new uImage format
--- a/common/image.c
+++ b/common/image.c
@ -44,8 +44,10 @@ extern int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);

 DECLARE_GLOBAL_DATA_PTR;

+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 static const image_header_t *image_get_ramdisk(ulong rd_addr, uint8_t arch,
 						int verify);
+#endif
 #else
 #include "mkimage.h"
 #include <u-boot/md5.h>
@ -330,6 +332,7 @@ void image_print_contents(const void *ptr)


 #ifndef USE_HOSTCC
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 /**
 * image_get_ramdisk - get and verify ramdisk image
 * @rd_addr: ramdisk image start address
@ -391,6 +394,7 @@ static const image_header_t *image_get_ramdisk(ulong rd_addr, uint8_t arch,

 	return rd_hdr;
 }
+#endif
 #endif /* !USE_HOSTCC */

 /*****************************************************************************/
@ -654,22 +658,23 @@ int genimg_get_comp_id(const char *name)
 */
 int genimg_get_format(const void *img_addr)
 {
-	ulong format = IMAGE_FORMAT_INVALID;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	const image_header_t *hdr;

 	hdr = (const image_header_t *)img_addr;
 	if (image_check_magic(hdr))
-		format = IMAGE_FORMAT_LEGACY;
+		return IMAGE_FORMAT_LEGACY;
+#endif
 #if defined(CONFIG_FIT) || defined(CONFIG_OF_LIBFDT)
-	else if (fdt_check_header(img_addr) == 0)
-		format = IMAGE_FORMAT_FIT;
+	if (fdt_check_header(img_addr) == 0)
+		return IMAGE_FORMAT_FIT;
 #endif
 #ifdef CONFIG_ANDROID_BOOT_IMAGE
-	else if (android_image_check_header(img_addr) == 0)
-		format = IMAGE_FORMAT_ANDROID;
+	if (android_image_check_header(img_addr) == 0)
+		return IMAGE_FORMAT_ANDROID;
 #endif

-	return format;
+	return IMAGE_FORMAT_INVALID;
 }

 /**
@ -711,12 +716,14 @@ ulong genimg_get_image(ulong img_addr)

 		/* get data size */
 		switch (genimg_get_format(buf)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 		case IMAGE_FORMAT_LEGACY:
 			d_size = image_get_data_size(buf);
 			debug("   Legacy format image found at 0x%08lx, "
 					"size 0x%08lx\n",
 					ram_addr, d_size);
 			break;
+#endif
 #if defined(CONFIG_FIT)
 		case IMAGE_FORMAT_FIT:
 			d_size = fit_get_size(buf) - h_size;
@ -792,7 +799,9 @@ int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,
 {
 	ulong rd_addr, rd_load;
 	ulong rd_data, rd_len;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	const image_header_t *rd_hdr;
+#endif
 	void *buf;
 #ifdef CONFIG_SUPPORT_RAW_INITRD
 	char *end;
@ -875,6 +884,7 @@ int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,
 		 */
 		buf = map_sysmem(rd_addr, 0);
 		switch (genimg_get_format(buf)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 		case IMAGE_FORMAT_LEGACY:
 			printf("## Loading init Ramdisk from Legacy "
 					"Image at %08lx ...\n", rd_addr);
@ -890,6 +900,7 @@ int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,
 			rd_len = image_get_data_size(rd_hdr);
 			rd_load = image_get_load(rd_hdr);
 			break;
+#endif
 #if defined(CONFIG_FIT)
 		case IMAGE_FORMAT_FIT:
 			rd_noffset = fit_image_load(images, FIT_RAMDISK_PROP,
--- a/doc/uImage.FIT/signature.txt
+++ b/doc/uImage.FIT/signature.txt
@ -328,6 +328,9 @@ be enabled:
 CONFIG_FIT_SIGNATURE - enable signing and verfication in FITs
 CONFIG_RSA - enable RSA algorithm for signing

+WARNING: When relying on signed FIT images with required signature check
+the legacy image format is default disabled by not defining
+CONFIG_IMAGE_FORMAT_LEGACY

 Testing
 -------
--- a/include/config_fallbacks.h
+++ b/include/config_fallbacks.h
@ -83,4 +83,12 @@
 #define CONFIG_SYS_HZ		1000
 #endif

+#ifndef CONFIG_FIT_SIGNATURE
+#define CONFIG_IMAGE_FORMAT_LEGACY
+#endif
+
+#ifdef CONFIG_DISABLE_IMAGE_LEGACY
+#undef CONFIG_IMAGE_FORMAT_LEGACY
+#endif
+
 #endif	/* __CONFIG_FALLBACKS_H */
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@ -225,6 +225,7 @@
 /* FIT support */
 #define CONFIG_FIT
 #define CONFIG_FIT_VERBOSE	1 /* enable fit_format_{error,warning}() */
+#define CONFIG_IMAGE_FORMAT_LEGACY /* enable also legacy image format */

 /* FDT support */
 #define CONFIG_OF_CONTROL
--- a/include/image.h
+++ b/include/image.h
@ -412,7 +412,9 @@ enum fit_load_op {
 #ifndef USE_HOSTCC
 /* Image format types, returned by _get_format() routine */
 #define IMAGE_FORMAT_INVALID	0x00
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 #define IMAGE_FORMAT_LEGACY	0x01	/* legacy image_header based format */
+#endif
 #define IMAGE_FORMAT_FIT	0x02	/* new, libfdt based format */
 #define IMAGE_FORMAT_ANDROID	0x03	/* Android boot image */