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tools/firmware-utils: document reserved fields in mkchkimg

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Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
This commit is contained in:
Thibaut VARENE 2017-07-30 12:40:25 +02:00 committed by Mathias Kresin
parent 695f5ea85a
commit b70a96285c
1 changed files with 18 additions and 4 deletions
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22
tools/firmware-utils/src/mkchkimg.c
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@ -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"));