imx: Add a common way for detecting NXP boards revision

NXP development boards based on i.MX6/i.MX7 contain the board
revision information stored in the fuses.

Introduce a common function that can be shared by different boards and
convert mx6sabreauto to use this new mechanism.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>

1 files changed, 2 insertions, 45 deletions

diff --git a/board/freescale/mx6sabreauto/mx6sabreauto.c b/board/freescale/mx6sabreauto/mx6sabreauto.c
index bdeb5f7667..9c83e350d4 100644
--- a/board/freescale/mx6sabreauto/mx6sabreauto.c
+++ b/board/freescale/mx6sabreauto/mx6sabreauto.c
@@ -397,39 +397,9 @@ int board_eth_init(bd_t *bis)
 	return cpu_eth_init(bis);
 }
 
-#define BOARD_REV_B  0x200
-#define BOARD_REV_A  0x100
-
-static int mx6sabre_rev(void)
-{
-	/*
-	 * Get Board ID information from OCOTP_GP1[15:8]
-	 * i.MX6Q ARD RevA: 0x01
-	 * i.MX6Q ARD RevB: 0x02
-	 */
-	struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
-	struct fuse_bank *bank = &ocotp->bank[4];
-	struct fuse_bank4_regs *fuse =
-			(struct fuse_bank4_regs *)bank->fuse_regs;
-	int reg = readl(&fuse->gp1);
-	int ret;
-
-	switch (reg >> 8 & 0x0F) {
-	case 0x02:
-		ret = BOARD_REV_B;
-		break;
-	case 0x01:
-	default:
-		ret = BOARD_REV_A;
-		break;
-	}
-
-	return ret;
-}
-
 u32 get_board_rev(void)
 {
-	int rev = mx6sabre_rev();
+	int rev = nxp_board_rev();
 
 	return (get_cpu_rev() & ~(0xF << 8)) | rev;
 }
@@ -703,20 +673,7 @@ int board_late_init(void)
 
 int checkboard(void)
 {
-	int rev = mx6sabre_rev();
-	char *revname;
-
-	switch (rev) {
-	case BOARD_REV_B:
-		revname = "B";
-		break;
-	case BOARD_REV_A:
-	default:
-		revname = "A";
-		break;
-	}
-
-	printf("Board: MX6Q-Sabreauto rev%s\n", revname);
+	printf("Board: MX6Q-Sabreauto rev%c\n", nxp_board_rev_string());
 
 	return 0;
 }