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authorThibaut VARENE <hacks@slashdirt.org>2017-07-30 12:40:25 +0200
committerMathias Kresin <dev@kresin.me>2017-08-03 00:11:25 +0200
commitb70a96285c0f489be68bfea7a84a7950a58ddc79 (patch)
tree35a3ea38b1b1f464a95999fba8301ddf9da6c1e5
parent695f5ea85a20d14b179053496ff007cb5d947923 (diff)
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tools/firmware-utils: document reserved fields in mkchkimg
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
-rw-r--r--tools/firmware-utils/src/mkchkimg.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/tools/firmware-utils/src/mkchkimg.c b/tools/firmware-utils/src/mkchkimg.c
index e152f7d468..0fe01f0707 100644
--- a/tools/firmware-utils/src/mkchkimg.c
+++ b/tools/firmware-utils/src/mkchkimg.c
@@ -31,6 +31,20 @@
#define MAX_BOARD_ID_LEN (64)
+/*
+ * Note on the reserved field of the chk_header:
+ * OFW naming scheme is typically: DEVICENAME-VA.B.C.D_E.F.G.chk, with A-G
+ * between 0 and 255. For instance: EX3700_EX3800-V1.0.0.58_1.0.38.chk
+ * The reserved field works like this:
+ * reserved[0]: region code. 1 for WW (WorldWide) and 2 for NA (North America)
+ * reserved[1]: A
+ * reserved[2]: B
+ * reserved[3]: C
+ * reserved[4]: D
+ * reserved[5]: E
+ * reserved[6]: F
+ * reserved[7]: G
+ */
struct chk_header {
uint32_t magic;
uint32_t header_len;
@@ -248,10 +262,10 @@ main (int argc, char * argv[])
hdr->reserved[1] = 1; /* Major */
hdr->reserved[2] = 1; /* Minor */
hdr->reserved[3] = 99; /* Build */
- hdr->reserved[4] = 0; /* Unknown t1 ? was 1 */
- hdr->reserved[5] = 0; /* Unknonw t2 ? was 0 */
- hdr->reserved[6] = 0; /* Unknonw t3 ? was 1 */
- hdr->reserved[7] = 0; /* Unused ? */
+ hdr->reserved[4] = 0;
+ hdr->reserved[5] = 0;
+ hdr->reserved[6] = 0;
+ hdr->reserved[7] = 0;
message (" Board Id: %s", board_id);
message (" Region: %s", region == 1 ? "World Wide (WW)"
: (region == 2 ? "North America (NA)" : "Unknown"));