diff options
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0119-Handle-pending-eSPI-HOST-OOB-RESET-VW-events.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0119-Handle-pending-eSPI-HOST-OOB-RESET-VW-events.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0119-Handle-pending-eSPI-HOST-OOB-RESET-VW-events.patch b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0119-Handle-pending-eSPI-HOST-OOB-RESET-VW-events.patch new file mode 100644 index 000000000..fe27864a2 --- /dev/null +++ b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0119-Handle-pending-eSPI-HOST-OOB-RESET-VW-events.patch @@ -0,0 +1,56 @@ +From 562a6d31576b91d1c7f2c9df0d12966a1f034ac6 Mon Sep 17 00:00:00 2001 +From: Saravanan Palanisamy <saravanan.palanisamy@intel.com> +Date: Wed, 23 Sep 2020 19:23:37 +0000 +Subject: [PATCH] Handle pending eSPI HOST, OOB RESET VW events. + +Add support for handling of HOST_RESET_WARN, OOB_RESET_WARN VW events received +before espi-ISR is registered. +Without this support, SoC does not boot to BIOS and wait for ACK endlessly +for these events. These events can be induced in some platforms in ME-recovery +mode. + +Tested: +1. Test: Induce HOST_RESET_WARN event before BMC uboot espi is initialized. + Expected: BMC should send HOST_RESET_ACK from uboot. PASS. +2. Test: Disable the HOST_RESET_WARN ACK support for early events in uboot, + and repeat test case 1. + Expected: BMC should send HOST_RESET_ACK from kernel(this change). PASS. + +Signed-off-by: Saravanan Palanisamy <saravanan.palanisamy@intel.com> +Signed-off-by: Richard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com> +--- + drivers/misc/aspeed-espi-slave.c | 18 ++++++++++++++++++ + 1 file changed, 18 insertions(+) + +diff --git a/drivers/misc/aspeed-espi-slave.c b/drivers/misc/aspeed-espi-slave.c +index cb8ed585c69f..ed7bff4d5046 100644 +--- a/drivers/misc/aspeed-espi-slave.c ++++ b/drivers/misc/aspeed-espi-slave.c +@@ -179,6 +179,24 @@ static void aspeed_espi_boot_ack(struct aspeed_espi *priv) + evt | ASPEED_ESPI_SYSEVT1_SUS_ACK); + dev_dbg(priv->dev, "Boot SYSEVT1_SUS_WARN: acked\n"); + } ++ ++ regmap_read(priv->map, ASPEED_ESPI_SYSEVT, &evt); ++ if (evt & ASPEED_ESPI_SYSEVT_HOST_RST_WARN && ++ !(evt & ASPEED_ESPI_SYSEVT_HOST_RST_ACK)) { ++ regmap_write_bits(priv->map, ASPEED_ESPI_SYSEVT, ++ ASPEED_ESPI_SYSEVT_HOST_RST_ACK, ++ ASPEED_ESPI_SYSEVT_HOST_RST_ACK); ++ dev_dbg(priv->dev, "Boot SYSEVT_HOST_RST_WARN: acked\n"); ++ } ++ ++ regmap_read(priv->map, ASPEED_ESPI_SYSEVT, &evt); ++ if (evt & ASPEED_ESPI_SYSEVT_OOB_RST_WARN && ++ !(evt & ASPEED_ESPI_SYSEVT_OOB_RST_ACK)) { ++ regmap_write_bits(priv->map, ASPEED_ESPI_SYSEVT, ++ ASPEED_ESPI_SYSEVT_OOB_RST_ACK, ++ ASPEED_ESPI_SYSEVT_OOB_RST_ACK); ++ dev_dbg(priv->dev, "Boot SYSEVT_OOB_RST_WARN: acked\n"); ++ } + } + + static irqreturn_t aspeed_espi_irq(int irq, void *arg) +-- +2.17.1 + |