ENGR00139747: Read fuse to distinguish between mx53 revA and revB

Read fuse to distinguish between mx53 revA and revB.

Now SoC efuse is used for board id.
Thus we now check fuse value for board rev and id.

Signed-off-by: Terry Lv <r65388@freescale.com>

1 files changed, 36 insertions, 7 deletions

diff --git a/board/freescale/mx53_smd/mx53_smd.c b/board/freescale/mx53_smd/mx53_smd.c
index 037a7b6..1ef757c 100644
--- a/board/freescale/mx53_smd/mx53_smd.c
+++ b/board/freescale/mx53_smd/mx53_smd.c
@@ -159,6 +159,20 @@ enum boot_device get_boot_device(void)
 	return boot_dev;
 }
 
+u32 get_board_rev_from_fuse(void)
+{
+	u32 board_rev = readl(IIM_BASE_ADDR + 0x878);
+
+	return board_rev;
+}
+
+u32 get_board_id_from_fuse(void)
+{
+	u32 board_id = readl(IIM_BASE_ADDR + 0x87c);
+
+	return board_id;
+}
+
 u32 get_board_rev(void)
 {
 	return system_rev;
@@ -167,6 +181,7 @@ u32 get_board_rev(void)
 static inline void setup_soc_rev(void)
 {
 	int reg;
+	u32 board_rev = get_board_rev_from_fuse();
 
 	/* Si rev is obtained from ROM */
 	reg = __REG(ROM_SI_REV);
@@ -181,11 +196,15 @@ static inline void setup_soc_rev(void)
 	default:
 		system_rev = 0x53000 | CHIP_REV_2_0;
 	}
-}
 
-static inline void setup_board_rev(int rev)
-{
-	system_rev |= (rev & 0xF) << 8;
+	switch (board_rev) {
+	case 0x02:
+		system_rev |= BOARD_REV_5;
+		break;
+	case 0x01:
+	default:
+		system_rev |= BOARD_REV_4;
+	}
 }
 
 inline int is_soc_rev(int rev)
@@ -846,10 +865,20 @@ int board_late_init(void)
 
 int checkboard(void)
 {
-	printf("Board: ");
-	printf("MX53-SMD 1.0\n");
-	printf("Boot Reason: [");
+	printf("Board: MX53-SMD ");
 
+	switch (get_board_rev_from_fuse()) {
+	case 0x2:
+		printf("Rev. B\n");
+		break;
+	case 0x1:
+	default:
+		printf("Rev. A\n");
+		break;
+
+	}
+
+	printf("Boot Reason: [");
 
 	switch (__REG(SRC_BASE_ADDR + 0x8)) {
 	case 0x0001: