From: Jaehoon Chung <jh80.chung@samsung.com>
Date: Tue, 24 Oct 2017 10:51:34 +0000 (+0900)
Subject: artik530: check the ALIVESCRATCH7 register to determine reboot mode
X-Git-Tag: submit/tizen/20180327.075642~42
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5c11aa5d2ce2cbc2580f73fe8559ce4c9b49dc11;p=profile%2Fcommon%2Fplatform%2Fkernel%2Fu-boot-artik7.git

artik530: check the ALIVESCRATCH7 register to determine reboot mode

If kernel sets the reboot mode at ALIVESCRATCH7 register, bootloader
should check it to enter proper mode (e.g., download/fota/recovery).

Check the ALIVESCRATCH7 register to determine reboot mode.

Change-Id: Ia30f562f9c2fd8c07c27df53299171e8721bccc5
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Junghoon Kim <jhoon20.kim@samsung.com>
---

diff --git a/arch/arm/mach-nexell/include/mach/nexell.h b/arch/arm/mach-nexell/include/mach/nexell.h
index b8a0831719..9fd4de9906 100644
--- a/arch/arm/mach-nexell/include/mach/nexell.h
+++ b/arch/arm/mach-nexell/include/mach/nexell.h
@@ -350,4 +350,14 @@
 
 #endif	/* __ASSEMBLY__ */
 
+/* Use the ALIVESCRATCH7 For Tizen artik reboot */
+#define SCRATCHRSTREG7			0xF4
+#define SCRATCHSETREG7			0xF8
+#define SCRATCHREADREG7			0xFC
+#define REBOOT_PREFIX			0x12345670
+#define REBOOT_PREFIX_MASK		0xFFFFFFF0
+#define REBOOT_DOWNLOAD			0x1
+#define REBOOT_RECOVERY			0x2
+#define REBOOT_FOTA				0x3
+
 #endif /* __NEXELL_H__ */
diff --git a/board/nexell/s5p4418/artik530_raptor/board.c b/board/nexell/s5p4418/artik530_raptor/board.c
index 70e608dce9..2fd0e11488 100644
--- a/board/nexell/s5p4418/artik530_raptor/board.c
+++ b/board/nexell/s5p4418/artik530_raptor/board.c
@@ -277,6 +277,32 @@ void dram_init_banksize(void)
 	gd->bd->bi_dram[0].size  = CONFIG_SYS_SDRAM_SIZE;
 }
 
+static void check_reboot_mode(void)
+{
+	u32 val;
+
+	val = readl(PHY_BASEADDR_ALIVE + SCRATCHREADREG7);
+
+	/* Clear the reboot mode */
+	writel(0xFFFFFFFF, PHY_BASEADDR_ALIVE + SCRATCHRSTREG7);
+	writel(0x0, PHY_BASEADDR_ALIVE + SCRATCHSETREG7);
+
+	if ((val & REBOOT_PREFIX_MASK) == REBOOT_PREFIX) {
+		val &= ~REBOOT_PREFIX;
+
+		if (val == REBOOT_DOWNLOAD)
+			run_command("thordown", 0);
+		else if (val == REBOOT_RECOVERY)
+			setenv("bootmode", "recovery");
+		else if (val == REBOOT_FOTA)
+			setenv("bootmode", "fota");
+		else
+			setenv("bootmode", "ramdisk");
+
+		saveenv();
+	}
+}
+
 #ifdef CONFIG_DM_PMIC_NXE2000
 void pmic_init(void)
 {
@@ -394,6 +420,8 @@ int board_late_init(void)
 #ifdef CONFIG_ARTIK_OTA
 	check_ota_update();
 #endif
+	check_reboot_mode();
+
 	set_booting_device();
 
 	return 0;