Your Name
98 lines
2.6 KiB
Diff
Executable File
98 lines
2.6 KiB
Diff
Executable File
From b3de8eb1967673d858fee96531698d8aab436a78 Mon Sep 17 00:00:00 2001
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From: roly <Rolyli.Li@luxshare-ict.com>
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Date: Wed, 27 Nov 2024 17:45:08 +0800
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Subject: [PATCH] Enable FMC WDT2
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---
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board/aspeed/evb_ast2600/evb_ast2600.c | 42 ++++++++++++++++++++++++++
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common/autoboot.c | 5 +++
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2 files changed, 47 insertions(+)
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diff --git a/board/aspeed/evb_ast2600/evb_ast2600.c b/board/aspeed/evb_ast2600/evb_ast2600.c
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index 668ae5c855..dfb4c7c7ef 100644
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--- a/board/aspeed/evb_ast2600/evb_ast2600.c
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+++ b/board/aspeed/evb_ast2600/evb_ast2600.c
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@@ -13,6 +13,11 @@
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#define LPC_SNPWADR (LPC_BASE + 0x90)
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#define LPC_HICRB (LPC_BASE + 0x100)
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#define GPIO_BASE 0x1e780000
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+#define FMC_BASE 0x1e620000
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+#define FMC_WDT2_CTRL (FMC_BASE + 0x64)
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+#define FMC_WDT2_TIMER_RELOAD_VALUE (FMC_BASE + 0x68)
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+#define FMC_WDT2_TIMER_RESTART (FMC_BASE + 0x6c)
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+#define WDT2_CTRL_ENABLE_WDT (1 << 0)
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/* HICR5 Bits */
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#define HICR5_EN_SIOGIO (1 << 31) /* Enable SIOGIO */
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@@ -124,8 +129,37 @@ static void __maybe_unused espi_init(void)
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writel(reg, ESPI_BASE + 0x000);
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}
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+static void __maybe_unused enable_fmc_wdt2(uint16_t expire_time)
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+{
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+ const u16 max_expire_time = 0x1fff;
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+ const u16 timer_restart_cmd = 0x4755;
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+ u32 reg;
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+
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+ if (expire_time > max_expire_time) {
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+ expire_time = max_expire_time;
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+ }
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+
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+ // The time unit is 0.1 second. The range is 0 to 0x1fff.
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+ writel(expire_time, FMC_WDT2_TIMER_RELOAD_VALUE);
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+ // Write 0x4755 value to load the reload value into watchdog counter
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+ writel(timer_restart_cmd, FMC_WDT2_TIMER_RESTART);
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+ // Enable FMC WDT2
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+ reg = readl(FMC_WDT2_CTRL) | (WDT2_CTRL_ENABLE_WDT);
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+ writel(reg, FMC_WDT2_CTRL);
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+}
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+
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+void __maybe_unused disable_fmc_wdt2(void)
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+{
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+ u32 reg;
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+
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+ reg = readl(FMC_WDT2_CTRL) & ~(WDT2_CTRL_ENABLE_WDT);
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+ writel(reg, FMC_WDT2_CTRL);
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+}
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+
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int board_early_init_f(void)
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{
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+ disable_fmc_wdt2();
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+ enable_fmc_wdt2(7800); // expire time: 13 minutes
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#if 0
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port80h_snoop_init();
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sgpio_init();
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@@ -220,4 +254,12 @@ int update_system_reset_event(void)
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env_set("system_reset_event", str_value);
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env_save();
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return 0;
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+}
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+
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+void board_preboot_os(void)
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+{
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+ const u16 expire_time = 780; // 13 minutes
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+
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+ enable_fmc_wdt2(expire_time * 10);
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+ printf("Enable FMC WDT2: expire time is %d seconds.", expire_time);
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}
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\ No newline at end of file
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diff --git a/common/autoboot.c b/common/autoboot.c
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index 94133eaeda..d54f1c431f 100644
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--- a/common/autoboot.c
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+++ b/common/autoboot.c
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@@ -267,6 +267,11 @@ static int abortboot(int bootdelay)
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gd->flags &= ~GD_FLG_SILENT;
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#endif
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+#ifdef CONFIG_ASPEED_AST2600
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+ if (abort)
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+ disable_fmc_wdt2();
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+#endif
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+
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return abort;
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}
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--
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2.25.1
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