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-rw-r--r--src/soc/intel/common/block/smbus/tco.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/smbus/tco.c b/src/soc/intel/common/block/smbus/tco.c
index bd8790aa6e..2c0b760481 100644
--- a/src/soc/intel/common/block/smbus/tco.c
+++ b/src/soc/intel/common/block/smbus/tco.c
@@ -19,6 +19,7 @@
#include <device/pci.h>
#include <device/pci_def.h>
#include <intelblocks/pcr.h>
+#include <intelblocks/pmclib.h>
#include <intelblocks/tco.h>
#include <soc/iomap.h>
#include <soc/pci_devs.h>
@@ -96,6 +97,18 @@ static void tco_timer_disable(void)
tco_write_reg(TCO1_CNT, tcocnt);
}
+/* Enable and initialize TCO intruder SMI */
+static void tco_intruder_smi_enable(void)
+{
+ uint16_t tcocnt;
+
+ /* Make TCO issue an SMI on INTRD_DET assertion */
+ tcocnt = tco_read_reg(TCO2_CNT);
+ tcocnt &= ~TCO_INTRD_SEL_MASK;
+ tcocnt |= TCO_INTRD_SEL_SMI;
+ tco_write_reg(TCO2_CNT, tcocnt);
+}
+
/* Enable TCO BAR using SMBUS TCO base to access TCO related register */
static void tco_enable_bar(void)
{
@@ -137,4 +150,8 @@ void tco_configure(void)
tco_enable_bar();
tco_timer_disable();
+
+ /* Enable intruder interrupt if TCO interrupts are enabled*/
+ if (CONFIG(SOC_INTEL_COMMON_BLOCK_SMM_TCO_ENABLE))
+ tco_intruder_smi_enable();
}