From: Manoj Sai <abbaraju.manojsai@amarulasolutions.com>
Date: Sun, 17 Sep 2023 19:26:26 +0000 (+0530)
Subject: spl: fit: support for booting a LZMA-compressed U-boot binary
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-favicon.png?a=commitdiff_plain;h=a1b7fd7f0af2bf342ec4899be3dda72e02d29c1e;p=u-boot.git

spl: fit: support for booting a LZMA-compressed U-boot binary

If LZMA Compression support is enabled, LZMA compressed U-Boot
binary will be placed at a specified RAM location which is
defined at CONFIG_SYS_LOAD_ADDR and will be assigned  as the
source address.

image_decomp() function, will decompress the LZMA compressed
U-Boot binary which is placed at source address(CONFIG_SYS_LOAD_ADDR)
to the default CONFIG_SYS_TEXT_BASE location.

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

Signed-off-by: Manoj Sai <abbaraju.manojsai@amarulasolutions.com>
Signed-off-by: Suniel Mahesh <sunil@amarulasolutions.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
---

diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c
index 0d28701a11..e567fe268f 100644
--- a/common/spl/spl_fit.c
+++ b/common/spl/spl_fit.c
@@ -282,7 +282,8 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
 			return 0;
 		}
 
-		if (spl_decompression_enabled() && image_comp == IH_COMP_GZIP)
+		if (spl_decompression_enabled() &&
+		    (image_comp == IH_COMP_GZIP || image_comp == IH_COMP_LZMA))
 			src_ptr = map_sysmem(ALIGN(CONFIG_SYS_LOAD_ADDR, ARCH_DMA_MINALIGN), len);
 		else
 			src_ptr = map_sysmem(ALIGN(load_addr, ARCH_DMA_MINALIGN), len);
@@ -330,6 +331,16 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
 			return -EIO;
 		}
 		length = size;
+	} else if (IS_ENABLED(CONFIG_SPL_LZMA) && image_comp == IH_COMP_LZMA) {
+		size = CONFIG_SYS_BOOTM_LEN;
+		ulong loadEnd;
+
+		if (image_decomp(IH_COMP_LZMA, CONFIG_SYS_LOAD_ADDR, 0, 0,
+				 load_ptr, src, length, size, &loadEnd)) {
+			puts("Uncompressing error\n");
+			return -EIO;
+		}
+		length = loadEnd - CONFIG_SYS_LOAD_ADDR;
 	} else {
 		memcpy(load_ptr, src, length);
 	}
diff --git a/include/spl.h b/include/spl.h
index 320ed94273..f62f385afa 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -905,6 +905,6 @@ void spl_save_restore_data(void);
  */
 static inline bool spl_decompression_enabled(void)
 {
-	return IS_ENABLED(CONFIG_SPL_GZIP);
+	return IS_ENABLED(CONFIG_SPL_GZIP) || IS_ENABLED(CONFIG_SPL_LZMA);
 }
 #endif