From 2bd2be545f39db24b6174d57b503d42eddab9371 Mon Sep 17 00:00:00 2001 From: Michael Niewöhner Date: Tue, 3 Mar 2020 20:47:01 +0100 Subject: soc/intel/common/block: tco: enable intruder SMI if selected MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Set TCO to issue an SMI when the case instrusion switch gets pressed. The SMI is controlled along with the general TCO SMI Kconfig. Tested on X11SSM-F. Change-Id: I3bc62c79ca3dc9e8896d9e2b9abdc14cfa46a9e7 Signed-off-by: Michael Niewöhner Reviewed-on: https://review.coreboot.org/c/coreboot/+/39264 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/intel/common/block/smbus/tco.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'src/soc/intel/common/block/smbus') 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 #include #include +#include #include #include #include @@ -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(); } -- cgit v1.2.3