[PATCH 04/10] spl: fit: support for booting a GZIP-compressed U-boot raw binary

[Manoj Sai]

If GZIP Compression support is enabled, GZIP compressed U-Boot raw binary will
be at a specified RAM location which is defined at
UBOOT_COMPRESSED_BINARY_FIT_USER_DEF_ADDR  and will be assign it as
the source address.

gunzip function in spl_load_fit_image ,will decompress the GZIP compressed
U-Boot raw binary which is placed at source address to the default
CONFIG_SYS_TEXT_BASE location.

spl_load_fit_image function will load the decompressed U-Boot
raw binary, which is placed at the CONFIG_SYS_TEXT_BASE location.

Signed-off-by: Manoj Sai <abbaraju.manoj...@amarulasolutions.com>
Signed-off-by: Suniel Mahesh <su...@amarulasolutions.com>
---
 common/spl/spl_fit.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index 730639f756..e2101099ef 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -281,7 +281,12 @@ static int spl_load_fit_image(struct spl_load_info *info, 
ulong sector,
                        return 0;
                }
 
-               src_ptr = map_sysmem(ALIGN(load_addr, ARCH_DMA_MINALIGN), len);
+               if ((IS_ENABLED(CONFIG_SPL_GZIP) && image_comp == 
IH_COMP_GZIP)) {
+                       src_ptr = 
map_sysmem(ALIGN(CONFIG_VAL(UBOOT_COMPRESSED_BINARY_FIT_USER_DEF_ADDR),
+                                               ARCH_DMA_MINALIGN), len);
+               } else {
+                       src_ptr = map_sysmem(ALIGN(load_addr, 
ARCH_DMA_MINALIGN), len);
+               }
                length = len;
 
                overhead = get_aligned_image_overhead(info, offset);
@@ -319,11 +324,14 @@ static int spl_load_fit_image(struct spl_load_info *info, 
ulong sector,
                board_fit_image_post_process(fit, node, &src, &length);
 
        load_ptr = map_sysmem(load_addr, length);
-       if (IS_ENABLED(CONFIG_SPL_GZIP) && image_comp == IH_COMP_GZIP) {
-               size = length;
-               if (gunzip(load_ptr, CONFIG_SYS_BOOTM_LEN, src, &size)) {
-                       puts("Uncompressing error\n");
-                       return -EIO;
+
+       if ((IS_ENABLED(CONFIG_SPL_GZIP) && image_comp == IH_COMP_GZIP)) {
+               if ((IS_ENABLED(CONFIG_SPL_GZIP) && image_comp == 
IH_COMP_GZIP)) {
+                       size = length;
+                       if (gunzip(load_ptr, CONFIG_SYS_BOOTM_LEN, src, &size)) 
{
+                               puts("Uncompressing error\n");
+                               return -EIO;
+                       }
                }
                length = size;
        } else {
-- 
2.25.1