tools: kwbimage: Support u-boot.img padding to CONFIG_SYS_SPI_U_BOOT_OFFS

This is used on the AXP boards, to pad u-boot.img to the desired offset in
SPI flash (only this boot target supported right now). This offset is
used by the SPL then to load u-boot.img into SDRAM and execute it there.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Luka Perkov <luka.perkov@sartura.hr>

diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 66f459ad6b1c7f2b65eb612349e6a2e647c8238e..28ce1e4f08f24230191e66009f2e07a41c55d40d 100644 (file)
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -16,6 +16,7 @@
 #include <image.h>
 #include <stdint.h>
 #include "kwbimage.h"
+#include <config.h>
 
 #define ALIGN_SUP(x, a) (((x) + (a - 1)) & ~(a - 1))
 
@@ -868,6 +869,16 @@ static int kwbimage_generate(struct image_tool_params *params,
                        sizeof(struct ext_hdr_v0);
        } else {
                alloc_len = image_headersz_v1(params, NULL);
+#if defined(CONFIG_SYS_SPI_U_BOOT_OFFS)
+               if (alloc_len > CONFIG_SYS_SPI_U_BOOT_OFFS) {
+                       fprintf(stderr, "Error: Image header (incl. SPL image) too big!\n");
+                       fprintf(stderr, "header=0x%x CONFIG_SYS_SPI_U_BOOT_OFFS=0x%x!\n",
+                               alloc_len, CONFIG_SYS_SPI_U_BOOT_OFFS);
+                       fprintf(stderr, "Increase CONFIG_SYS_SPI_U_BOOT_OFFS!\n");
+               } else {
+                       alloc_len = CONFIG_SYS_SPI_U_BOOT_OFFS;
+               }
+#endif
        }
 
        hdr = malloc(alloc_len);