From aae3bab86f19784cbe0767ea0973527ce217bf89 Mon Sep 17 00:00:00 2001 From: Jae Hyun Yoo Date: Fri, 3 Jan 2020 15:14:09 -0800 Subject: [PATCH] Disable crashdump trigger gpio This commit disables crashdump trigger gpio (GPIOC3) to prevent unexpected host failures. Signed-off-by: Jae Hyun Yoo --- board/aspeed/ast2600_intel/intel.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/board/aspeed/ast2600_intel/intel.c b/board/aspeed/ast2600_intel/intel.c index eb6fbaf77e66..7daf1b83305a 100644 --- a/board/aspeed/ast2600_intel/intel.c +++ b/board/aspeed/ast2600_intel/intel.c @@ -146,6 +146,27 @@ static void sgpio_init(void) writel(value, AST_GPIO_BASE + GPIO254); } +static void disable_crashlog_trigger(void) +{ +#define SCU_410 0x410 /* Multi-function Pin Control #4 */ +#define SCU_410_RGMII3TXD1 BIT(19) +#define GPIO_004 0x004 /* GPIO A/B/C/D Direction */ +#define GPIO_000 0x000 /* GPIO A/B/C/D Value */ +#define GPIO_C3 BIT(19) + + /* + * Set FM_BMC_CRASHLOG_TRIG_N (GPIOC3) as an output with value high + * explicitly since it doesn't have an external pull up. It uses direct + * register access because it's called from board_early_init_f(). + */ + writel(readl(SCU_BASE | SCU_410) & ~SCU_410_RGMII3TXD1, + SCU_BASE | SCU_410); + writel(readl(AST_GPIO_BASE | GPIO_004) | GPIO_C3, + AST_GPIO_BASE | GPIO_004); + writel(readl(AST_GPIO_BASE | GPIO_000) | GPIO_C3, + AST_GPIO_BASE | GPIO_000); +} + void espi_init(void); int arch_interrupt_init_early(void); @@ -162,6 +183,8 @@ int board_early_init_f(void) * I am not sure if it actually does anything... */ arch_interrupt_init_early(); + disable_crashlog_trigger(); + gpio_passthru_init(); port80h_snoop_init(); -- 2.7.4