board: samsung: i9300: set serial number and board rev

The board rev is GPM1[5:2], and the serial number is the bottom two words of the MMC CID.
fourkbomb · May 20, 2018 · 5e87c7025639a7fe5fa4a320b42976d57bb0eaa5 · 5e87c70
1 parent 0f2899c
commit 5e87c7025639a7fe5fa4a320b42976d57bb0eaa5
Unified Split

Showing with 53 additions and 3 deletions.

+1 −0 arch/arm/mach-exynos/Kconfig

+52 −3 board/samsung/i9300/i9300.c
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
@@ -76,6 +76,7 @@ config TARGET_I9300
 	bool "Exynos4412 i9300 board"
 	select SUPPORT_SPL
 	select EXYNOS4412
+  
+	select BOARD_LATE_INIT
 	imply OF_BOARD_SETUP
 endchoice

diff --git a/board/samsung/i9300/i9300.c b/board/samsung/i9300/i9300.c
@@ -9,6 +9,7 @@
 #include <asm/arch/gpio.h>
 #include <extcon.h>
 #include <linux/libfdt.h>
+  
+#include <mmc.h>
 #include <power/max77686_pmic.h>
 #include <power/max77693_muic.h>
 #include <power/pmic.h>
@@ -18,10 +19,51 @@
 DECLARE_GLOBAL_DATA_PTR;
-  
-int get_board_rev(void)
+  
+static uint64_t board_serial = 0;
+  
+static char board_rev = 0xff;
+  
+static char board_serial_str[17];
+  
+
+  
+void board_load_info(void)
 {
-  
-	// TODO: GPM1[5:2]
-  
-	return 0;
+  
+	struct mmc *emmc = find_mmc_device(2);
+  
+	static const int rev_gpios[] = {
+  
+		EXYNOS4X12_GPIO_M15,
+  
+		EXYNOS4X12_GPIO_M14,
+  
+		EXYNOS4X12_GPIO_M13,
+  
+		EXYNOS4X12_GPIO_M12,
+  
+	};
+  
+
+  
+	board_rev = 0;
+  
+
+  
+	for (int i = 0; i < ARRAY_SIZE(rev_gpios); i++) {
+  
+		gpio_request(rev_gpios[i], "HW_REV[0..3]");
+  
+		gpio_cfg_pin(rev_gpios[i], S5P_GPIO_INPUT);
+  
+		gpio_set_pull(rev_gpios[i], S5P_GPIO_PULL_DOWN);
+  
+
+  
+		board_rev <<= 1;
+  
+		board_rev |= gpio_get_value(rev_gpios[i]);
+  
+	}
+  
+
+  
+	if (!emmc) {
+  
+		pr_err("%s: couldn't get serial number - no eMMC device found!\n", __func__);
+  
+		sprintf(board_serial_str, "%16x", 0);
+  
+		return;
+  
+	}
+  
+
+  
+	if (mmc_init(emmc)) {
+  
+		pr_err("%s: eMMC init failed!\n", __func__);
+  
+	} else {
+  
+		board_serial = ((uint64_t)emmc->cid[2] << 32) | emmc->cid[3];
+  
+	}
+  
+	sprintf(board_serial_str, "%16llx", board_serial);
+  
+	env_set("serial#", board_serial_str);
+  
+}
+  
+
+  
+int get_board_rev(void) {
+  
+	if (board_rev == 0xff)
+  
+		board_load_info();
+  
+
+  
+	return board_rev;
 }
 static void board_gpio_init(void)
@@ -169,3 +211,10 @@ int exynos_init(void)
 	return 0;
 }
+  
+
+  
+int exynos_late_init(void)
+  
+{
+  
+	board_load_info();
+  
+
+  
+	return 0;
+  
+}