This is almost identical to the imx7 version, except that the register names are different.
Signed-off-by: Sean Anderson sean.anderson@seco.com ---
arch/arm/mach-imx/mx6/soc.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/arch/arm/mach-imx/mx6/soc.c b/arch/arm/mach-imx/mx6/soc.c index bf6dddfdc9..cb729be46f 100644 --- a/arch/arm/mach-imx/mx6/soc.c +++ b/arch/arm/mach-imx/mx6/soc.c @@ -11,6 +11,7 @@ #include <linux/delay.h> #include <linux/errno.h> #include <asm/io.h> +#include <asm/setup.h> #include <asm/arch/imx-regs.h> #include <asm/arch/clock.h> #include <asm/arch/sys_proto.h> @@ -705,6 +706,38 @@ int arch_misc_init(void) } #endif
+#ifdef CONFIG_SERIAL_TAG +/* + * UNIQUE_ID describes a unique ID based on silicon wafer + * and die X/Y position + * + * UNIQUE_ID offset 0x410 + * 31:0 fuse 0 + * FSL-wide unique, encoded LOT ID STD II/SJC CHALLENGE/ Unique ID + * + * UNIQUE_ID offset 0x420 + * 31:24 fuse 1 + * The X-coordinate of the die location on the wafer/SJC CHALLENGE/ Unique ID + * 23:16 fuse 1 + * The Y-coordinate of the die location on the wafer/SJC CHALLENGE/ Unique ID + * 15:11 fuse 1 + * The wafer number of the wafer on which the device was fabricated/SJC + * CHALLENGE/ Unique ID + * 10:0 fuse 1 + * FSL-wide unique, encoded LOT ID STD II/SJC CHALLENGE/ Unique ID + */ +void get_board_serial(struct tag_serialnr *serialnr) +{ + struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR; + struct fuse_bank *bank = &ocotp->bank[0]; + struct fuse_bank0_regs *fuse = + (struct fuse_bank0_regs *)bank->fuse_regs; + + serialnr->low = fuse->uid_low; + serialnr->high = fuse->uid_high; +} +#endif + /* * gpr_init() function is common for boards using MX6S, MX6DL, MX6D, * MX6Q and MX6QP processors