rockchip: rk3288: Move rk3288_detect_reset_reason to soc file

The rk3288_detect_reset_reason() is per-SoC operation, move
it to rk3288.c, and extend the rk_board_late_init() with
rk3288_board_late_init() to make all the board works fine
as before.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/arch/arm/mach-rockchip/rk3288/rk3288.c b/arch/arm/mach-rockchip/rk3288/rk3288.c
index 10db6dfa9b..b462c09069 100644
--- a/arch/arm/mach-rockchip/rk3288/rk3288.c
+++ b/arch/arm/mach-rockchip/rk3288/rk3288.c
@@ -100,6 +100,55 @@ void board_debug_uart_init(void)
 }
 #endif
 
+static void rk3288_detect_reset_reason(void)
+{
+	struct rk3288_cru *cru = rockchip_get_cru();
+	const char *reason;
+
+	if (IS_ERR(cru))
+		return;
+
+	switch (cru->cru_glb_rst_st) {
+	case GLB_POR_RST:
+		reason = "POR";
+		break;
+	case FST_GLB_RST_ST:
+	case SND_GLB_RST_ST:
+		reason = "RST";
+		break;
+	case FST_GLB_TSADC_RST_ST:
+	case SND_GLB_TSADC_RST_ST:
+		reason = "THERMAL";
+		break;
+	case FST_GLB_WDT_RST_ST:
+	case SND_GLB_WDT_RST_ST:
+		reason = "WDOG";
+		break;
+	default:
+		reason = "unknown reset";
+	}
+
+	env_set("reset_reason", reason);
+
+	/*
+	 * Clear cru_glb_rst_st, so we can determine the last reset cause
+	 * for following resets.
+	 */
+	rk_clrreg(&cru->cru_glb_rst_st, GLB_RST_ST_MASK);
+}
+
+__weak int rk3288_board_late_init(void)
+{
+	return 0;
+}
+
+int rk_board_late_init(void)
+{
+	rk3288_detect_reset_reason();
+
+	return rk3288_board_late_init();
+}
+
 static int do_clock(cmd_tbl_t *cmdtp, int flag, int argc,
 		       char * const argv[])
 {