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Ryu: Add PD_NO_DEBUG logic

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Signed-off-by: Anton Staaf <robotboy@chromium.org>

BRANCH=None
BUG=chromium:470299
TEST=make buildall -j

Change-Id: I79f831c8a0b581561472470986b86c77b7f824a1
Reviewed-on: https://chromium-review.googlesource.com/264796
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
This commit is contained in:
Anton Staaf
2015-03-30 11:01:10 -07:00
committed by ChromeOS Commit Bot
parent f224ae87bd
commit 676a995cb3
1 changed files with 15 additions and 0 deletions
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15
common/main.c
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@@ -78,6 +78,21 @@ test_mockable int main(void)
flash_pre_init();
#endif
#if defined(CONFIG_CASE_CLOSED_DEBUG)
/*
* If the device is both soft (EC flash protection active) and hard
* (WP hardware signal active) write protected then we assert
* PD_NO_DEBUG, preventing the EC from interfering with the AP's
* access to the SPI flash. The PD_NO_DEBUG signal is latched in
* hardware, so changing this GPIO later has no effect.
*/
#define FLASH_PROTECT_MASK (EC_FLASH_PROTECT_RO_NOW | \
EC_FLASH_PROTECT_GPIO_ASSERTED)
if ((flash_get_protect() & FLASH_PROTECT_MASK) == FLASH_PROTECT_MASK)
gpio_set_level(GPIO_PD_DISABLE_DEBUG, 1);
#endif
/* Set the CPU clocks / PLLs. System is now running at full speed. */
clock_init();