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| author | Anton Staaf <robotboy@chromium.org> | 2015-03-30 11:01:10 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-04-13 15:27:11 +0000 |
| commit | 676a995cb3e940b1c9e727ec8a97bef2a14c4ca5 (patch) | |
| tree | f9dfcdfceb6291c6bc6cbd3b5e4ae693503fae81 | |
| parent | f224ae87bd6967533d53278541c57414d61d26cf (diff) | |
| download | chrome-ec-676a995cb3e940b1c9e727ec8a97bef2a14c4ca5.tar.gz | |
Ryu: Add PD_NO_DEBUG logic
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>
| -rw-r--r-- | common/main.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/common/main.c b/common/main.c index 00bc19df4a..8f9c48e4af 100644 --- a/common/main.c +++ b/common/main.c @@ -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(); |