[coreboot-gerrit] New patch to review for coreboot: util/cbfstool: Allow overwriting CBFS regions with raw data on request

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16998

-gerrit

commit 32a5ce4031ca3623c281b8227c1ccb4589b0ab9c
Author: Patrick Georgi <pgeorgi at chromium.org>
Date:   Wed Oct 12 16:46:13 2016 +0200

    util/cbfstool: Allow overwriting CBFS regions with raw data on request
    
    Add a --force/-F option and enable it for cbfstool write, where it has
    the effect of not testing if the fmap region contains a CBFS or if the
    data to write is a CBFS image.
    
    Change-Id: I02f72841a20db3d86d1b67ccf371bd40bb9a4d51
    Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
---
 util/cbfstool/cbfstool.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/util/cbfstool/cbfstool.c b/util/cbfstool/cbfstool.c
index e70cb4b..c695e55 100644
--- a/util/cbfstool/cbfstool.c
+++ b/util/cbfstool/cbfstool.c
@@ -82,6 +82,7 @@ static struct param {
 	/* for linux payloads */
 	char *initrd;
 	char *cmdline;
+	int force;
 } param = {
 	/* All variables not listed are initialized as zero. */
 	.arch = CBFS_ARCHITECTURE_UNKNOWN,
@@ -935,7 +936,7 @@ static int cbfs_write(void)
 		return 1;
 	}
 
-	if (region_is_modern_cbfs(param.region_name)) {
+	if (!param.force && region_is_modern_cbfs(param.region_name)) {
 		ERROR("Target image region '%s' is a CBFS and must be manipulated using add and remove\n",
 							param.region_name);
 		return 1;
@@ -952,7 +953,7 @@ static int cbfs_write(void)
 		buffer_delete(&new_content);
 		return 1;
 	}
-	if (buffer_check_magic(&new_content, CBFS_FILE_MAGIC,
+	if (!param.force && buffer_check_magic(&new_content, CBFS_FILE_MAGIC,
 						strlen(CBFS_FILE_MAGIC))) {
 		ERROR("File '%s' appears to be a CBFS and cannot be inserted into a raw region\n",
 								param.filename);
@@ -1088,7 +1089,7 @@ static const struct command commands[] = {
 	{"read", "r:f:vh?", cbfs_read, true, false},
 	{"remove", "H:r:n:vh?", cbfs_remove, true, true},
 	{"update-fit", "H:r:n:x:vh?", cbfs_update_fit, true, true},
-	{"write", "r:f:udvh?", cbfs_write, true, true},
+	{"write", "r:f:Fudvh?", cbfs_write, true, true},
 };
 
 static struct option long_options[] = {
@@ -1104,6 +1105,7 @@ static struct option long_options[] = {
 	{"fill-upward",   no_argument,       0, 'u' },
 	{"flashmap",      required_argument, 0, 'M' },
 	{"fmap-regions",  required_argument, 0, 'r' },
+	{"force",         no_argument,       0, 'F' },
 	{"source-region", required_argument, 0, 'R' },
 	{"hash-algorithm",required_argument, 0, 'A' },
 	{"header-offset", required_argument, 0, 'H' },
@@ -1444,6 +1446,9 @@ int main(int argc, char **argv)
 			case 'f':
 				param.filename = optarg;
 				break;
+			case 'F':
+				param.force = 1;
+				break;
 			case 'i':
 				param.u64val = strtoull(optarg, &suffix, 0);
 				if (!*optarg || (suffix && *suffix)) {