From c934aad06c8df5e95af4c461bf3d62f7c95169a0 Mon Sep 17 00:00:00 2001 From: Pali Rohár Date: Fri, 23 Jul 2021 11:13:57 +0200 Subject: tools: kwbimage: Align SPI and NAND images to 256 bytes Writing into SPI NOR and NAND memory can be done only in 256 bytes long blocks. Align final image size so that when it is burned into SPI NOR or NAND memory via U-Boot's commands (sf or mtd), we can use the $filesize variable directly as the length argument. Signed-off-by: Pali Rohár Reviewed-by: Marek Behún Reviewed-by: Stefan Roese Reviewed-by: Chris Packham Tested-by: Chris Packham --- tools/kwbimage.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'tools/kwbimage.c') diff --git a/tools/kwbimage.c b/tools/kwbimage.c index c775abf0e3d..f40ba0994dd 100644 --- a/tools/kwbimage.c +++ b/tools/kwbimage.c @@ -1510,6 +1510,17 @@ static int image_get_version(void) return e->version; } +static int image_get_bootfrom(void) +{ + struct image_cfg_element *e; + + e = image_find_option(IMAGE_CFG_BOOT_FROM); + if (!e) + return -1; + + return e->bootfrom; +} + static void kwbimage_set_header(void *ptr, struct stat *sbuf, int ifd, struct image_tool_params *params) { @@ -1642,6 +1653,7 @@ static int kwbimage_generate(struct image_tool_params *params, FILE *fcfg; struct stat s; int alloc_len; + int bootfrom; int version; void *hdr; int ret; @@ -1678,6 +1690,7 @@ static int kwbimage_generate(struct image_tool_params *params, exit(EXIT_FAILURE); } + bootfrom = image_get_bootfrom(); version = image_get_version(); switch (version) { /* @@ -1717,8 +1730,12 @@ static int kwbimage_generate(struct image_tool_params *params, * The resulting image needs to be 4-byte aligned. At least * the Marvell hdrparser tool complains if its unaligned. * After the image data is stored 4-byte checksum. + * Final SPI and NAND images must be aligned to 256 bytes. */ - return 4 + (4 - s.st_size % 4) % 4; + if (bootfrom == IBR_HDR_SPI_ID || bootfrom == IBR_HDR_NAND_ID) + return 4 + (256 - (alloc_len + s.st_size + 4) % 256) % 256; + else + return 4 + (4 - s.st_size % 4) % 4; } /* -- cgit v1.2.3