Daisuke Nojiri 5946911129 CBI: Make data offset and size variable ...

Currently CBI data offset and size are fixed. This patch makes them
variable. Each data item consists of <tag><size><value> where <tag>
is a numeric value assigned to each data item, <size> is the number
of bytes used for <value>.

BUG=b:70294260
BRANCH=none
TEST=Use 'ectool cbi set' to set board version, oem, sku.
Verify the contents by cbi console command and ectool cbi get.
1. ectool cbi set 0 0x202 2 2 (Init CBI and write board ver. of size 2)
2. ectool cbi set 1 1 1 (write oem id of size 1)
3. ectool cbi set 2 2 1 (write sku id of size 1)
4. ectool cbi get 0
 514 (0x202)
5. ectool cbi get 1
 1 (0x1)
6. ectool cbi get 2
 2 (0x2)
7. Run cbi console command:
 CBI_VERSION: 0x0000
 TOTAL_SIZE: 18
 BOARD_VERSION: 514 (0x202)
 OEM_ID: 1 (0x1)
 SKU_ID: 2 (0x2)
  43 42 49 8c 00 00 12 00 00 02 02 02 01 01 01 02
  01 02

Change-Id: I5a30a4076e3eb448f4808d2af8ec4ef4c016ae5e
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/920905
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

2018-02-16 18:47:52 -08:00

186 KiB

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