OMAP3: Add support for OMAP3 die ID

Read and store OMAP3 die ID in U-Boot environment.

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>

board/omap3/beagle/beagle.c

@@ -116,6 +116,8 @@ int misc_init_r(void)
 
 	beagle_identify();
 
+	dieid_num_r();
+
 	return 0;
 }
 

board/omap3/evm/evm.c

@@ -68,6 +68,8 @@ int misc_init_r(void)
 	setup_net_chip();
 #endif
 
+	dieid_num_r();
+
 	return 0;
 }
 

board/omap3/overo/overo.c

@@ -60,6 +60,8 @@ int misc_init_r(void)
 {
 	power_init_r();
 
+	dieid_num_r();
+
 	return 0;
 }
 

board/omap3/pandora/pandora.c

@@ -77,6 +77,8 @@ int misc_init_r(void)
 	writel(GPIO28, &gpio5_base->setdataout);
 	writel(GPIO4, &gpio6_base->setdataout);
 
+	dieid_num_r();
+
 	return 0;
 }
 

board/omap3/zoom1/zoom1.c

@@ -61,6 +61,7 @@ int board_init(void)
 int misc_init_r(void)
 {
 	power_init_r();
+	dieid_num_r();
 	return 0;
 }
 

cpu/arm_cortexa8/omap3/sys_info.c

@@ -36,6 +36,32 @@ static gpmc_csx_t *gpmc_cs_base = (gpmc_csx_t *)GPMC_CONFIG_CS0_BASE;
 static sdrc_t *sdrc_base = (sdrc_t *)OMAP34XX_SDRC_BASE;
 static ctrl_t *ctrl_base = (ctrl_t *)OMAP34XX_CTRL_BASE;
 
+/*****************************************************************
+ * dieid_num_r(void) - read and set die ID
+ *****************************************************************/
+void dieid_num_r(void)
+{
+	ctrl_id_t *id_base = (ctrl_id_t *)OMAP34XX_ID_L4_IO_BASE;
+	char *uid_s, die_id[34];
+	u32 id[4];
+
+	memset(die_id, 0, sizeof(die_id));
+
+	uid_s = getenv("dieid#");
+
+	if (uid_s == NULL) {
+		id[3] = readl(&id_base->die_id_0);
+		id[2] = readl(&id_base->die_id_1);
+		id[1] = readl(&id_base->die_id_2);
+		id[0] = readl(&id_base->die_id_3);
+		sprintf(die_id, "%08x%08x%08x%08x", id[0], id[1], id[2], id[3]);
+		setenv("dieid#", die_id);
+		uid_s = die_id;
+	}
+
+	printf("Die ID #%s\n", uid_s);
+}
+
 /******************************************
  * get_cpu_type(void) - extract cpu info
  ******************************************/

include/asm-arm/arch-omap3/cpu.h

@@ -60,6 +60,19 @@ typedef struct ctrl {
 #define OMAP3525		0x4c00
 #define OMAP3530		0x0c00
 
+#ifndef __ASSEMBLY__
+typedef struct ctrl_id {
+	unsigned char res1[0x4];
+	unsigned int idcode;		/* 0x04 */
+	unsigned int prod_id;		/* 0x08 */
+	unsigned char res2[0x0C];
+	unsigned int die_id_0;		/* 0x18 */
+	unsigned int die_id_1;		/* 0x1C */
+	unsigned int die_id_2;		/* 0x20 */
+	unsigned int die_id_3;		/* 0x24 */
+} ctrl_id_t;
+#endif /* __ASSEMBLY__ */
+
 /* device type */
 #define DEVICE_MASK		(0x7 << 8)
 #define SYSBOOT_MASK		0x1F

include/asm-arm/arch-omap3/omap3.h

@@ -43,6 +43,7 @@
  */
 #define OMAP34XX_CORE_L4_IO_BASE	0x48000000
 #define OMAP34XX_WAKEUP_L4_IO_BASE	0x48300000
+#define OMAP34XX_ID_L4_IO_BASE		0x4830A200
 #define OMAP34XX_L4_PER			0x49000000
 #define OMAP34XX_L4_IO_BASE		OMAP34XX_CORE_L4_IO_BASE
 

include/asm-arm/arch-omap3/sys_proto.h

@@ -66,5 +66,6 @@ void sdelay(unsigned long);
 void make_cs1_contiguous(void);
 void omap_nand_switch_ecc(int);
 void power_init_r(void);
+void dieid_num_r(void);
 
 #endif