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mkimage: fit: spl: Add an optional static offset for external data

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When building a FIT with external data (-E), U-Boot proper may require
absolute positioning for executing the external firmware. To acheive this
use the (-p) switch, which will replace the amended 'data-offset' with
'data-position' indicating the absolute position of external data.

It is considered an error if the requested absolute position overlaps with the
initial data required for the compact FIT.

Signed-off-by: Teddy Reed <teddy.reed@gmail.com>
This commit is contained in:
Teddy Reed
2016-06-09 19:38:02 -07:00
committed by Tom Rini
parent 92dfd9221c
commit f8f9107d97
5 changed files with 39 additions and 3 deletions
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13
tools/mkimage.c
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@@ -93,11 +93,13 @@ static void usage(const char *msg)
" -f => input filename for FIT source\n");
#ifdef CONFIG_FIT_SIGNATURE
fprintf(stderr,
"Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-r]\n"
"Signing / verified boot options: [-E] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r]\n"
" -E => place data outside of the FIT structure\n"
" -k => set directory containing private keys\n"
" -K => write public keys to this .dtb file\n"
" -c => add comment in signature node\n"
" -F => re-sign existing FIT image\n"
" -p => place external data at a static position\n"
" -r => mark keys used as 'required' in dtb\n");
#else
fprintf(stderr,
@@ -136,7 +138,7 @@ static void process_args(int argc, char **argv)
int opt;
while ((opt = getopt(argc, argv,
"a:A:b:cC:d:D:e:Ef:Fk:K:ln:O:rR:qsT:vVx")) != -1) {
"a:A:b:cC:d:D:e:Ef:Fk:K:ln:p:O:rR:qsT:vVx")) != -1) {
switch (opt) {
case 'a':
params.addr = strtoull(optarg, &ptr, 16);
@@ -216,6 +218,13 @@ static void process_args(int argc, char **argv)
if (params.os < 0)
usage("Invalid operating system");
break;
case 'p':
params.external_offset = strtoull(optarg, &ptr, 16);
if (*ptr) {
fprintf(stderr, "%s: invalid offset size %s\n",
params.cmdname, optarg);
exit(EXIT_FAILURE);
}
case 'q':
params.quiet = 1;
break;