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spl: fit: Support both external and embedded data

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SPL supports U-Boot image in FIT format which has data outside of
FIT structure. This adds support for embedded data for normal FIT
images.

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 11:14:44 -07:00
parent 7264f2928b
commit 5fd13d9736
2 changed files with 37 additions and 19 deletions
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52
common/spl/spl_fit.c
View File

@ -132,14 +132,16 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
void *fit, ulong base_offset, int node,
struct spl_image_info *image_info)
{
ulong offset;
int offset;
size_t length;
int len;
ulong load_addr, load_ptr;
void *src;
ulong overhead;
int nr_sectors;
int align_len = ARCH_DMA_MINALIGN - 1;
uint8_t image_comp = -1, type = -1;
const void *data;
if (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP)) {
if (fit_image_get_comp(fit, node, &image_comp))
@ -153,28 +155,40 @@ static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
debug("%s ", genimg_get_type_name(type));
}
offset = fdt_getprop_u32(fit, node, "data-offset");
if (offset == FDT_ERROR)
return -ENOENT;
offset += base_offset;
length = fdt_getprop_u32(fit, node, "data-size");
if (length == FDT_ERROR)
return -ENOENT;
load_addr = fdt_getprop_u32(fit, node, "load");
if (load_addr == FDT_ERROR && image_info)
if (fit_image_get_load(fit, node, &load_addr))
load_addr = image_info->load_addr;
load_ptr = (load_addr + align_len) & ~align_len;
overhead = get_aligned_image_overhead(info, offset);
nr_sectors = get_aligned_image_size(info, length, offset);
if (!fit_image_get_data_offset(fit, node, &offset)) {
/* External data */
offset += base_offset;
if (fit_image_get_data_size(fit, node, &len))
return -ENOENT;
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,
(unsigned long)length);
load_ptr = (load_addr + align_len) & ~align_len;
length = len;
overhead = get_aligned_image_overhead(info, offset);
nr_sectors = get_aligned_image_size(info, length, offset);
if (info->read(info,
sector + get_aligned_image_offset(info, offset),
nr_sectors, (void *)load_ptr) != nr_sectors)
return -EIO;
debug("External data: dst=%lx, offset=%x, size=%lx\n",
load_ptr, offset, (unsigned long)length);
src = (void *)load_ptr + overhead;
} else {
/* Embedded data */
if (fit_image_get_data(fit, node, &data, &length)) {
puts("Cannot get image data/size\n");
return -ENOENT;
}
debug("Embedded data: dst=%lx, size=%lx\n", load_addr,
(unsigned long)length);
src = (void *)data;
}
src = (void *)load_ptr + overhead;
#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
board_fit_image_post_process(&src, &length);
#endif

4
doc/uImage.FIT/source_file_format.txt
View File

@ -288,6 +288,10 @@ The 'data-offset' property can be substituted with 'data-position', which
defines an absolute position or address as the offset. This is helpful when
booting U-Boot proper before performing relocation.
Normal kernel FIT image has data embedded within FIT structure. U-Boot image
for SPL boot has external data. Existence of 'data-offset' can be used to
identify which format is used.
9) Examples
-----------