[coreboot-gerrit] New patch to review for coreboot: soc/intel/quark: Clear SMI and wake events

[Leroy P Leahy (leroy.p.leahy@intel.com)]

Leroy P Leahy (leroy.p.leahy at intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14945

-gerrit

commit 3439a0e25e5482c5e53e8b27db4f13da160c6add
Author: Lee Leahy <leroy.p.leahy at intel.com>
Date:   Sun May 22 11:52:28 2016 -0700

    soc/intel/quark: Clear SMI and wake events
    
    Migrate the clearing of the SMI interrupts and wake events from FSP into
    coreboot.
    
    TEST=Build and run on Galileo Gen2
    
    Change-Id: Ia369801da87a16bc00fb2c05475831ebe8a315f8
    Signed-off-by: Lee Leahy <leroy.p.leahy at intel.com>
---
 src/soc/intel/quark/romstage/romstage.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/soc/intel/quark/romstage/romstage.c b/src/soc/intel/quark/romstage/romstage.c
index 4ed5863..491fd14 100644
--- a/src/soc/intel/quark/romstage/romstage.c
+++ b/src/soc/intel/quark/romstage/romstage.c
@@ -30,6 +30,13 @@
 #include <soc/romstage.h>
 #include <soc/reg_access.h>
 
+static const struct reg_script clear_smi_and_wake_events[] = {
+	/* Clear any SMI or wake events */
+	REG_LEG_GPIO_OR(R_QNC_GPE0BLK_GPE0S, B_QNC_GPE0BLK_GPE0S_ALL),
+	REG_LEG_GPIO_OR(R_QNC_GPE0BLK_SMIS, B_QNC_GPE0BLK_SMIS_ALL),
+	REG_SCRIPT_END
+};
+
 static const struct reg_script legacy_gpio_init[] = {
 	/* Temporarily enable the legacy GPIO controller */
 	REG_PCI_WRITE32(R_QNC_LPC_GBA_BASE, IO_ADDRESS_VALID
@@ -70,6 +77,10 @@ struct chipset_power_state *fill_power_state(void)
 
 	ps->prev_sleep_state = 0;
 	printk(BIOS_DEBUG, "prev_sleep_state %d\n", ps->prev_sleep_state);
+
+	/* Clear SMI and wake events */
+	if (ps->prev_sleep_state != 3)
+		reg_script_run_on_dev(LPC_BDF, clear_smi_and_wake_events);
 	return ps;
 }