Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4959
-gerrit
commit ca9a50d6267b2499a3202541f43fa71456d71cf3 Author: Aaron Durbin adurbin@chromium.org Date: Mon Nov 11 14:55:47 2013 -0600
rambi: mainboard EC - SCI and SMI fixes
As rambi is a baytrail board it doesn't have a dedicated wake pin. Therefore, one needs to enable the proper GPIO to wake up the sytem before going into S3.
BUG=chrome-os-partner:23505 BRANCH=None TEST=Put system into S3. Keyboard press created wake event. Also, typed 'lidclose' on EC console while at recovery screen. Machine properly shutdown.
Change-Id: Ic67b6bce93d57c620f498505d83197e4ae34a07d Signed-off-by: Aaron Durbin adurbin@chromium.org Reviewed-on: https://chromium-review.googlesource.com/176392 --- src/mainboard/google/rambi/ec.c | 1 + src/mainboard/google/rambi/mainboard_smi.c | 13 ++++++++++--- 2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/src/mainboard/google/rambi/ec.c b/src/mainboard/google/rambi/ec.c index 0919f0f..c055d61 100644 --- a/src/mainboard/google/rambi/ec.c +++ b/src/mainboard/google/rambi/ec.c @@ -43,6 +43,7 @@ void mainboard_ec_init(void) } else { google_chromeec_log_events(MAINBOARD_EC_LOG_EVENTS | MAINBOARD_EC_S5_WAKE_EVENTS); + google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS); }
/* Clear wake events, these are enabled on entry to sleep */ diff --git a/src/mainboard/google/rambi/mainboard_smi.c b/src/mainboard/google/rambi/mainboard_smi.c index ac5c841..09a8580 100644 --- a/src/mainboard/google/rambi/mainboard_smi.c +++ b/src/mainboard/google/rambi/mainboard_smi.c @@ -28,6 +28,9 @@ #include <baytrail/nvs.h> #include <baytrail/pmc.h>
+/* The wake gpio is SUS_GPIO[0]. */ +#define WAKE_GPIO_EN SUS_GPIO_EN0 + int mainboard_io_trap_handler(int smif) { switch (smif) { @@ -67,7 +70,7 @@ static uint8_t mainboard_smi_ec(void)
/* Go to S5 */ pm1_cnt = inl(pmbase + PM1_CNT); - pm1_cnt |= SLP_TYP | (SLP_TYP_S5 << SLP_TYP_SHIFT); + pm1_cnt |= SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT); outl(pm1_cnt, pmbase + PM1_CNT); break; } @@ -75,9 +78,11 @@ static uint8_t mainboard_smi_ec(void) return cmd; }
-void mainboard_smi_gpi(uint32_t gpi_sts) +/* The entire 32-bit ALT_GPIO_SMI register is passed as a parameter. Note, that + * this includes the enable bits in the lower 16 bits. */ +void mainboard_smi_gpi(uint32_t alt_gpio_smi) { - if (gpi_sts & (1 << EC_SMI_GPI)) { + if (alt_gpio_smi & (1 << EC_SMI_GPI)) { /* Process all pending events */ while (mainboard_smi_ec() != 0); } @@ -97,6 +102,8 @@ void mainboard_smi_sleep(uint8_t slp_typ)
/* Enable wake events */ google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS); + /* Enable wake pin in GPE block. */ + enable_gpe(WAKE_GPIO_EN); break; case 5: if (smm_get_gnvs()->s5u0 == 0)