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ipq806x: Added support for compressed dtb images

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This commit lays a foundation for packing multiple dtb
images in a single itb image, by supporting compressed dtb
images. This is basically to support all boards across
different soc versions in a single itb image.
The plan is to compress the dtb images, so as to save flash space.

Change-Id: Iba81e311cfda55696209cf99c81e062980629871
Signed-off-by: Gokul Sriram Palanisamy <gpalan@codeaurora.org>
This commit is contained in:
Gokul Sriram Palanisamy 2016-10-26 17:04:12 +05:30
parent b429ae2267
commit 13e938b53d
3 changed files with 64 additions and 10 deletions
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11
common/bootm.c
View file

@ -334,6 +334,11 @@ int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
*load_end = load;
print_decomp_msg(comp, type, load == image_start);
#if defined(CONFIG_DTB_COMPRESSION)
if(type == IH_TYPE_FLATDT)
unc_len = CONFIG_DTB_LOAD_MAXLEN;
#endif
/*
* Load the image to the right place, decompressing if needed. After
* this, image_len will be set to the number of uncompressed bytes
@ -413,7 +418,7 @@ int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
}
#ifndef USE_HOSTCC
static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
int boot_progress)
{
image_info_t os = images->os;
@ -437,7 +442,9 @@ static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
}
flush_cache(load, (*load_end - load) * sizeof(ulong));
debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
debug(" %s loaded at 0x%08lx, end = 0x%08lx\n",
genimg_get_type_name(os.type), load, *load_end);
if (os.type == IH_TYPE_KERNEL)
bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
no_overlap = (os.comp == IH_COMP_NONE && load == image_start);

48
common/image-fit.c
View file

@ -1569,6 +1569,10 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
uint8_t os;
const char *prop_name;
int ret;
#if defined(CONFIG_DTB_COMPRESSION)
bootm_headers_t fdt = {0};
#endif
uint8_t comp_type = IH_COMP_NONE;
fit = map_sysmem(addr, 0);
fit_uname = fit_unamep ? *fit_unamep : NULL;
@ -1650,11 +1654,13 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
return -ENOEXEC;
}
#endif
#if !defined(CONFIG_DTB_COMPRESSION)
if (image_type == IH_TYPE_FLATDT &&
!fit_image_check_comp(fit, noffset, IH_COMP_NONE)) {
puts("FDT image is compressed");
return -EPROTONOSUPPORT;
}
#endif
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_CHECK_ALL);
type_ok = fit_image_check_type(fit, noffset, image_type) ||
@ -1691,11 +1697,31 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
}
len = (ulong)size;
#if defined(CONFIG_DTB_COMPRESSION)
if (!fit_image_get_comp(fit, noffset, &comp_type)
&& (comp_type != IH_COMP_NONE)) {
printf(" %s %s image found\n",
genimg_get_comp_name(comp_type), prop_name);
if (fit_image_get_load(fit, noffset,
&load) != 0) {
printf("ERROR: load address not found for "
"compressed %s..\n", prop_name);
return -EFAULT;
} else {
fdt.os.comp = comp_type;
fdt.os.type = IH_TYPE_FLATDT;
printf(" %s load address is: 0x%08x\n", prop_name,
(unsigned int)load);
}
}
#endif
if (comp_type == IH_COMP_NONE) {
/* verify that image data is a proper FDT blob */
if (image_type == IH_TYPE_FLATDT && fdt_check_header(buf)) {
puts("Subimage data is not a FDT");
return -ENOEXEC;
}
}
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_GET_DATA_OK);
@ -1722,7 +1748,6 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
} else if (load_op != FIT_LOAD_OPTIONAL_NON_ZERO || load) {
ulong image_start, image_end;
ulong load_end;
void *dst;
/*
* move image data to the load address,
@ -1741,8 +1766,27 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
printf(" Loading %s from 0x%08lx to 0x%08lx\n",
prop_name, data, load);
dst = map_sysmem(load, len);
#if defined(CONFIG_DTB_COMPRESSION)
if (comp_type != IH_COMP_NONE) {
fdt.os.image_start = (ulong)data;
fdt.os.image_len = len;
fdt.os.load = load;
if (!bootm_load_os(&fdt, &load_end, 1)) {
/*
* verify that uncompressed image
* data is a proper FDT blob
* */
if (fdt_check_header((char *)load) != 0) {
printf("Error: Uncompresed FIT Subimage"
" data is not a %s", prop_name);
return -ENOEXEC;
}
}
}
#else
void *dst = map_sysmem(load, len);
memmove(dst, buf, len);
#endif
data = load;
}
bootstage_mark(bootstage_id + BOOTSTAGE_SUB_LOAD);

3
include/image.h
View file

@ -917,6 +917,9 @@ int fit_check_ramdisk(const void *fit, int os_noffset,
int calculate_hash(const void *data, int data_len, const char *algo,
uint8_t *value, int *value_len);
int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
int boot_progress);
/*
* At present we only support signing on the host, and verification on the
* device