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spl: fit: Eanble GZIP support for image decompression 

Add Kconfig option SPL_GZIP and SPL_ZLIB to enable gunzip support for
SPL boot, eg. falcon boot compressed kernel image.

Signed-off-by: York Sun <york.sun@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
York Sun 2017-08-15 11:14:43 -07:00
parent d1f2ee7021
commit 7264f2928b
3 changed files with 45 additions and 4 deletions
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32
common/spl/spl_fit.c
View File

@ -11,6 +11,10 @@
#include <libfdt.h>
#include <spl.h>
#ifndef CONFIG_SYS_BOOTM_LEN
#define CONFIG_SYS_BOOTM_LEN (64 << 20)
#endif
/**
* spl_fit_get_image_node(): By using the matching configuration subnode,
* retrieve the name of an image, specified by a property name and an index
@ -135,6 +139,19 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
ulong overhead;
int nr_sectors;
int align_len = ARCH_DMA_MINALIGN - 1;
uint8_t image_comp = -1, type = -1;
if (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP)) {
if (fit_image_get_comp(fit, node, &image_comp))
puts("Cannot get image compression format.\n");
else
debug("%s ", genimg_get_comp_name(image_comp));
if (fit_image_get_type(fit, node, &type))
puts("Cannot get image type.\n");
else
debug("%s ", genimg_get_type_name(type));
}
offset = fdt_getprop_u32(fit, node, "data-offset");
if (offset == FDT_ERROR)
@ -154,7 +171,7 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
if (info->read(info, sector + get_aligned_image_offset(info, offset),
nr_sectors, (void*)load_ptr) != nr_sectors)
return -EIO;
debug("image: dst=%lx, offset=%lx, size=%lx\n", load_ptr, offset,
debug("image dst=%lx, offset=%lx, size=%lx\n", load_ptr, offset,
(unsigned long)length);
src = (void *)load_ptr + overhead;
@ -162,7 +179,18 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
board_fit_image_post_process(&src, &length);
#endif
memcpy((void*)load_addr, src, length);
if (IS_ENABLED(CONFIG_SPL_OS_BOOT) &&
IS_ENABLED(CONFIG_SPL_GZIP) &&
image_comp == IH_COMP_GZIP &&
type == IH_TYPE_KERNEL) {
if (gunzip((void *)load_addr, CONFIG_SYS_BOOTM_LEN,
src, &length)) {
puts("Uncompressing error\n");
return -EIO;
}
} else {
memcpy((void *)load_addr, src, length);
}
if (image_info) {
image_info->load_addr = load_addr;

12
lib/Kconfig
View File

@ -176,6 +176,18 @@ config LZO
bool "Enable LZO decompression support"
help
This enables support for LZO compression algorithm.r
config SPL_GZIP
bool "Enable gzip decompression support for SPL build"
select SPL_ZLIB
help
This enables support for GZIP compression altorithm for SPL boot.
config SPL_ZLIB
bool
help
This enables compression lib for SPL boot.
endmenu
config ERRNO_STR

5
lib/Makefile
View File

@ -11,7 +11,6 @@ obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_EFI_LOADER) += efi_loader/
obj-$(CONFIG_LZMA) += lzma/
obj-$(CONFIG_LZO) += lzo/
obj-$(CONFIG_ZLIB) += zlib/
obj-$(CONFIG_BZIP2) += bzip2/
obj-$(CONFIG_TIZEN) += tizen/
obj-$(CONFIG_FIT) += libfdt/
@ -26,7 +25,6 @@ obj-y += crc16.o
obj-$(CONFIG_ERRNO_STR) += errno_str.o
obj-$(CONFIG_FIT) += fdtdec_common.o
obj-$(CONFIG_TEST_FDTDEC) += fdtdec_test.o
obj-$(CONFIG_GZIP) += gunzip.o
obj-$(CONFIG_GZIP_COMPRESSED) += gzip.o
obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += smbios.o
obj-y += initcall.o
@ -49,6 +47,9 @@ obj-$(CONFIG_RSA) += rsa/
obj-$(CONFIG_SHA1) += sha1.o
obj-$(CONFIG_SHA256) += sha256.o
obj-$(CONFIG_$(SPL_)ZLIB) += zlib/
obj-$(CONFIG_$(SPL_)GZIP) += gunzip.o
obj-$(CONFIG_$(SPL_TPL_)SAVEENV) += qsort.o
obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += libfdt/
ifneq ($(CONFIG_$(SPL_TPL_)BUILD)$(CONFIG_$(SPL_TPL_)OF_PLATDATA),yy)