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poppy: Implement workaround for broken reset flags

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Boards Rev1 and Rev2 will lose VBAT on power cycle and therefore
cannot successfully save the reset flag state.

Implement workaround that will allow these boards to continue to
work for FAFT testing by indicating to the skylake chipset power code
that it should skip the PMIC reset when doing 'reboot ap-off'.

BUG=b:62504451
BRANCH=None
TEST=Verified that "reboot ap-off" works fine on Rev1.

Change-Id: I97ee346c0e8796375dc295cfa7a86cd0d57d4e4f
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/530515
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
This commit is contained in:
Furquan Shaikh
2017-06-10 10:50:04 -07:00
committed by chrome-bot
parent 52c5b31c22
commit cabd486cb2
1 changed files with 12 additions and 0 deletions
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12
board/poppy/board.c
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@@ -894,3 +894,15 @@ static void board_chipset_suspend(void)
gpio_set_level(GPIO_ENABLE_BACKLIGHT, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
int board_has_working_reset_flags(void)
{
int version = system_get_board_version();
/* Boards Rev1 and Rev2 will lose reset flags on power cycle. */
if ((version == 1) || (version == 2))
return 0;
/* All other board versions should have working reset flags */
return 1;
}