diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0019-Apply-WDT-reset-mask-to-reset-needed-controller.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0019-Apply-WDT-reset-mask-to-reset-needed-controller.patch | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0019-Apply-WDT-reset-mask-to-reset-needed-controller.patch b/meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0019-Apply-WDT-reset-mask-to-reset-needed-controller.patch deleted file mode 100644 index b68975c40..000000000 --- a/meta-openbmc-mods/meta-ast2600/recipes-bsp/u-boot/files/0019-Apply-WDT-reset-mask-to-reset-needed-controller.patch +++ /dev/null @@ -1,78 +0,0 @@ -From 5179bc2cba159b9167fee90a2c6a7ea2824df8ad Mon Sep 17 00:00:00 2001 -From: Suryakanth Sekar <suryakanth.sekar@linux.intel.com> -Date: Thu, 18 Jun 2020 05:32:48 +0530 -Subject: [PATCH] Apply WDT reset mask to reset needed controller - -Issue: -Whenever BIOS and BMC warm reset happens at a time. -BIOS is not booting. - -Root caused: -BMC resetting the LPC controller during BMC warm reset. -Which cause BIOS hang as BIOS cannot dump the BIOS serial data. - -Fix: -WDT reset mask has been updated from default to proper value, -such that controllers interacting with host will not be reset -during wdt reset operation. -This was missed earlier, causing BIOS to hang whenever BMC resets, -as BIOS was accessing the serial port (LPC controller). -De-coupling LPC controller will make sure BIOS serial port access -is not disturbed. -Reset mask is updated not to reset the following controllers -additionally on the default mask setting. -1. LPC controller -2. PWM controller -3. GPIO controller - -Quick Step to reproduce: -Stop the BMC in uboot and add below bootcmd command -setenv bootcmd "reset" -Do the System power ON or System warm reset. - -Tested: -1. Ran overnight continous BIOS and BMC warm reset on two SUTs. - -2. Ran the TestApp which dump the BIOS serial port continously and -do the BMC reset. - -3. Stop the BMC in uboot and add below bootcmd command -setenv bootcmd "reset" -Do the System Power ON or System warm reset. - -Signed-off-by: Suryakanth Sekar <suryakanth.sekar@linux.intel.com> -Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com> ---- - arch/arm/mach-aspeed/ast2600/platform.S | 9 +++++++++ - 1 file changed, 9 insertions(+) - -diff --git a/arch/arm/mach-aspeed/ast2600/platform.S b/arch/arm/mach-aspeed/ast2600/platform.S -index d881ba8565f2..68eb0000922a 100644 ---- a/arch/arm/mach-aspeed/ast2600/platform.S -+++ b/arch/arm/mach-aspeed/ast2600/platform.S -@@ -66,6 +66,9 @@ - #define AST_MAC2_BASE (0x1E680000) - #define AST_MAC2_CTRL2 (AST_MAC2_BASE + 0x058) - -+#define AST_WDT1_BASE 0x1E785000 -+#define AST_WDT1_RESET_MASK2 (AST_WDT1_BASE + 0x020) -+ - #define AST_GPIO_BASE (0x1E780000) - #define AST_GPIOYZ_DATA_VALUE (AST_GPIO_BASE + 0x1E0) - -@@ -264,6 +267,12 @@ wait_lock: - str r1, [r0] - - 1: -+ /* disable LPC, PWM and GPIO2 resets on WDT1 reset */ -+ ldr r0, =AST_WDT1_RESET_MASK2 -+ ldr r1, [r0] -+ bic r1, #0x2A00 -+ str r1, [r0] -+ - /* release display port reset */ - ldr r0, =AST_SCU_SYSRST_CTRL_CLR - movw r1, #0x0000 --- -2.7.4 - |