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authorDavid Wu <david_wu@quanta.corp-partner.google.com>2019-07-30 09:53:23 +0800
committerFurquan Shaikh <furquan@google.com>2019-08-01 16:47:10 +0000
commit92dc39129156307913dbf3c07f926554f0c14ab8 (patch)
treef7bc788b3964d3c5890e74cb09bdaac2976d52c7 /src
parentbba18c55403bf3c664683993848eba93b3ec8e24 (diff)
downloadcoreboot-92dc39129156307913dbf3c07f926554f0c14ab8.tar.xz
soc/intel/cannonlake/bootblock: Clear the GPI IS & IE registers
Clear the GPI Interrupt Status & Enable registers to prevent any interrupt storms due to GPI. BUG=b:138282962 TEST=Ensure that the Interrupt status & enable registers are reset during the boot-up when the system is brought out of G3, S5 & S3. Ensure that the system boots fine to ChromeOS. Change-Id: I2185355d0095601e0778b6bf47ae137cc53e4051 Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34624 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Diffstat (limited to 'src')
-rw-r--r--src/soc/intel/cannonlake/bootblock/bootblock.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/bootblock/bootblock.c b/src/soc/intel/cannonlake/bootblock/bootblock.c
index 5555969289..30c2266096 100644
--- a/src/soc/intel/cannonlake/bootblock/bootblock.c
+++ b/src/soc/intel/cannonlake/bootblock/bootblock.c
@@ -59,6 +59,11 @@ void bootblock_soc_early_init(void)
void bootblock_soc_init(void)
{
+ /*
+ * Clear the GPI interrupt status and enable registers. These
+ * registers do not get reset to default state when booting from S5.
+ */
+ gpi_clear_int_cfg();
report_platform_info();
pch_early_init();
}