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authorDaniel Allred <d-allred@ti.com>2016-06-27 09:19:21 -0500
committerTom Rini <trini@konsulko.com>2016-07-14 18:22:21 -0400
commitda74d1f341e46ecc0ae893b4aa3b771ce9dba9f3 (patch)
treee9ca2d8caaa004feae5120c53540e9bf3afe7ee1 /common/spl
parentbf9ec864f4f5f52afecfdcea1d258ee4072bdd01 (diff)
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spl: fit: add support for post-processing of images
The next stage boot loader image and the selected FDT can be post- processed by board/platform/device-specific code, which can include modifying the size and altering the starting source address before copying these binary blobs to their final destination. This might be desired to do things like strip headers or footers attached to the images before they were packaged into the FIT, or to perform operations such as decryption or authentication. Introduce new configuration option CONFIG_SPL_FIT_IMAGE_POST_PROCESS to allow controlling this feature. If enabled, a platform-specific post-process function must be provided. Signed-off-by: Daniel Allred <d-allred@ti.com> Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/spl')
-rw-r--r--common/spl/spl_fit.c21
1 files changed, 16 insertions, 5 deletions
diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index 9874708..069e94d 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -132,7 +132,7 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit)
int data_offset, data_size;
int base_offset, align_len = ARCH_DMA_MINALIGN - 1;
int src_sector;
- void *dst;
+ void *dst, *src;
/*
* Figure out where the external images start. This is the base for the
@@ -206,8 +206,13 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit)
return -EIO;
debug("image: dst=%p, data_offset=%x, size=%x\n", dst, data_offset,
data_size);
- memcpy(dst, dst + get_aligned_image_overhead(info, data_offset),
- data_size);
+ src = dst + get_aligned_image_overhead(info, data_offset);
+
+#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
+ board_fit_image_post_process((void **)&src, (size_t *)&data_size);
+#endif
+
+ memcpy(dst, src, data_size);
/* Figure out which device tree the board wants to use */
fdt_len = spl_fit_select_fdt(fit, images, &fdt_offset);
@@ -236,8 +241,14 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit)
*/
debug("fdt: dst=%p, data_offset=%x, size=%x\n", dst, fdt_offset,
fdt_len);
- memcpy(load_ptr + data_size,
- dst + get_aligned_image_overhead(info, fdt_offset), fdt_len);
+ src = dst + get_aligned_image_overhead(info, fdt_offset);
+ dst = load_ptr + data_size;
+
+#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
+ board_fit_image_post_process((void **)&src, (size_t *)&fdt_len);
+#endif
+
+ memcpy(dst, src, fdt_len);
return 0;
}