85xx: Report which "bank" of NOR flash we are booting from on FSL boards

The p2020DS, MPC8536DS, MPC8572DS, MPC8544DS boards are capable of
swizzling the upper address bits of the NOR flash we boot out of which
creates the concept of "virtual" banks.  This is useful in that we can
flash a test of image of u-boot and reset to one of the virtual banks
while still maintaining a working image in "bank 0".

The PIXIS FPGA exposes registers on LBC which we can use to determine
which "bank" we are booting out of (as well as setting which bank to
boot out of).

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

board/freescale/mpc8536ds/mpc8536ds.c

@@ -60,10 +60,41 @@ int board_early_init_f (void)
 
 int checkboard (void)
 {
-	printf ("Board: MPC8536DS, System ID: 0x%02x, "
-		"System Version: 0x%02x, FPGA Version: 0x%02x\n",
-		in8(PIXIS_BASE + PIXIS_ID), in8(PIXIS_BASE + PIXIS_VER),
-		in8(PIXIS_BASE + PIXIS_PVER));
+	u8 vboot;
+	u8 *pixis_base = (u8 *)PIXIS_BASE;
+
+	puts("Board: MPC8536DS ");
+#ifdef CONFIG_PHYS_64BIT
+	puts("(36-bit addrmap) ");
+#endif
+
+	printf ("Sys ID: 0x%02x, "
+		"Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
+		in_8(pixis_base + PIXIS_ID), in_8(pixis_base + PIXIS_VER),
+		in_8(pixis_base + PIXIS_PVER));
+
+	vboot = in_8(pixis_base + PIXIS_VBOOT);
+	switch ((vboot & PIXIS_VBOOT_LBMAP) >> 5) {
+		case PIXIS_VBOOT_LBMAP_NOR0:
+			puts ("vBank: 0\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_NOR1:
+			puts ("vBank: 1\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_NOR2:
+			puts ("vBank: 2\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_NOR3:
+			puts ("vBank: 3\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_PJET:
+			puts ("Promjet\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_NAND:
+			puts ("NAND\n");
+			break;
+	}
+
 	return 0;
 }
 

board/freescale/mpc8544ds/mpc8544ds.c

@@ -43,14 +43,22 @@ int checkboard (void)
 	volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 	volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
 	volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
+	u8 vboot;
+	u8 *pixis_base = (u8 *)PIXIS_BASE;
 
 	if ((uint)&gur->porpllsr != 0xe00e0000) {
 		printf("immap size error %lx\n",(ulong)&gur->porpllsr);
 	}
-	printf ("Board: MPC8544DS, System ID: 0x%02x, "
-		"System Version: 0x%02x, FPGA Version: 0x%02x\n",
-		in8(PIXIS_BASE + PIXIS_ID), in8(PIXIS_BASE + PIXIS_VER),
-		in8(PIXIS_BASE + PIXIS_PVER));
+	printf ("Board: MPC8544DS, Sys ID: 0x%02x, "
+		"Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
+		in_8(pixis_base + PIXIS_ID), in_8(pixis_base + PIXIS_VER),
+		in_8(pixis_base + PIXIS_PVER));
+
+	vboot = in_8(pixis_base + PIXIS_VBOOT);
+	if (vboot & PIXIS_VBOOT_FMAP)
+		printf ("vBank: %d\n", ((vboot & PIXIS_VBOOT_FBANK) >> 6));
+	else
+		puts ("Promjet\n");
 
 	lbc->ltesr = 0xffffffff;	/* Clear LBC error interrupts */
 	lbc->lteir = 0xffffffff;	/* Enable LBC error interrupts */

board/freescale/mpc8572ds/mpc8572ds.c

@@ -42,14 +42,34 @@ long int fixed_sdram(void);
 
 int checkboard (void)
 {
+	u8 vboot;
+	u8 *pixis_base = (u8 *)PIXIS_BASE;
+
 	puts ("Board: MPC8572DS ");
 #ifdef CONFIG_PHYS_64BIT
 	puts ("(36-bit addrmap) ");
 #endif
 	printf ("Sys ID: 0x%02x, "
-		"Sys Ver: 0x%02x, FPGA Ver: 0x%02x\n",
-		in8(PIXIS_BASE + PIXIS_ID), in8(PIXIS_BASE + PIXIS_VER),
-		in8(PIXIS_BASE + PIXIS_PVER));
+		"Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
+		in_8(pixis_base + PIXIS_ID), in_8(pixis_base + PIXIS_VER),
+		in_8(pixis_base + PIXIS_PVER));
+
+	vboot = in_8(pixis_base + PIXIS_VBOOT);
+	switch ((vboot & PIXIS_VBOOT_LBMAP) >> 6) {
+		case PIXIS_VBOOT_LBMAP_NOR0:
+			puts ("vBank: 0\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_PJET:
+			puts ("Promjet\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_NAND:
+			puts ("NAND\n");
+			break;
+		case PIXIS_VBOOT_LBMAP_NOR1:
+			puts ("vBank: 1\n");
+			break;
+	}
+
 	return 0;
 }
 

board/freescale/p2020ds/p2020ds.c

@@ -47,14 +47,31 @@ phys_size_t fixed_sdram(void);
 
 int checkboard(void)
 {
+	u8 sw7;
+	u8 *pixis_base = (u8 *)PIXIS_BASE;
+
 	puts("Board: P2020DS ");
 #ifdef CONFIG_PHYS_64BIT
 	puts("(36-bit addrmap) ");
 #endif
+
 	printf("Sys ID: 0x%02x, "
-		"Sys Ver: 0x%02x, FPGA Ver: 0x%02x\n",
-		in8(PIXIS_BASE + PIXIS_ID), in8(PIXIS_BASE + PIXIS_VER),
-		in8(PIXIS_BASE + PIXIS_PVER));
+		"Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
+		in_8(pixis_base + PIXIS_ID), in_8(pixis_base + PIXIS_VER),
+		in_8(pixis_base + PIXIS_PVER));
+
+	sw7 = in_8(pixis_base + PIXIS_SW(7));
+	switch ((sw7 & PIXIS_SW7_LBMAP) >> 6) {
+		case 0:
+		case 1:
+			printf ("vBank: %d\n", ((sw7 & PIXIS_SW7_VBANK) >> 4));
+			break;
+		case 2:
+		case 3:
+			puts ("Promjet\n");
+			break;
+	}
+
 	return 0;
 }
 

include/configs/MPC8536DS.h

@@ -218,6 +218,13 @@ extern unsigned long get_board_ddr_clk(unsigned long dummy);
 #define PIXIS_VCFGEN1		0x13	/* VELA Config Enable 1 */
 #define PIXIS_VCORE0	 	0x14	/* VELA VCORE0 Register */
 #define PIXIS_VBOOT		0x16	/* VELA VBOOT Register */
+#define PIXIS_VBOOT_LBMAP	0xe0	/* VBOOT - CFG_LBMAP */
+#define PIXIS_VBOOT_LBMAP_NOR0	0x00	/* cfg_lbmap - boot from NOR 0 */
+#define PIXIS_VBOOT_LBMAP_NOR1	0x01	/* cfg_lbmap - boot from NOR 1 */
+#define PIXIS_VBOOT_LBMAP_NOR2	0x02	/* cfg_lbmap - boot from NOR 2 */
+#define PIXIS_VBOOT_LBMAP_NOR3	0x03	/* cfg_lbmap - boot from NOR 3 */
+#define PIXIS_VBOOT_LBMAP_PJET	0x04	/* cfg_lbmap - boot from projet */
+#define PIXIS_VBOOT_LBMAP_NAND	0x05	/* cfg_lbmap - boot from NAND */
 #define PIXIS_VSPEED0		0x17	/* VELA VSpeed 0 */
 #define PIXIS_VSPEED1		0x18	/* VELA VSpeed 1 */
 #define PIXIS_VSPEED2		0x19	/* VELA VSpeed 2 */

include/configs/MPC8544DS.h

@@ -192,6 +192,8 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
 #define PIXIS_VCFGEN0		0x12	/* VELA Config Enable 0 */
 #define PIXIS_VCFGEN1		0x13	/* VELA Config Enable 1 */
 #define PIXIS_VBOOT		0x16	/* VELA VBOOT Register */
+#define PIXIS_VBOOT_FMAP	0x80	/* VBOOT - CFG_FLASHMAP */
+#define PIXIS_VBOOT_FBANK	0x40	/* VBOOT - CFG_FLASHBANK */
 #define PIXIS_VSPEED0		0x17	/* VELA VSpeed 0 */
 #define PIXIS_VSPEED1		0x18	/* VELA VSpeed 1 */
 #define PIXIS_VCLKH		0x19	/* VELA VCLKH register */

include/configs/MPC8572DS.h

@@ -237,6 +237,11 @@ extern unsigned long get_board_ddr_clk(unsigned long dummy);
 #define PIXIS_VCFGEN1		0x13	/* VELA Config Enable 1 */
 #define PIXIS_VCORE0	 	0x14	/* VELA VCORE0 Register */
 #define PIXIS_VBOOT		0x16	/* VELA VBOOT Register */
+#define PIXIS_VBOOT_LBMAP	0xc0	/* VBOOT - CFG_LBMAP */
+#define PIXIS_VBOOT_LBMAP_NOR0	0x00	/* cfg_lbmap - boot from NOR 0 */
+#define PIXIS_VBOOT_LBMAP_PJET	0x01	/* cfg_lbmap - boot from projet */
+#define PIXIS_VBOOT_LBMAP_NAND	0x02	/* cfg_lbmap - boot from NAND */
+#define PIXIS_VBOOT_LBMAP_NOR1	0x03	/* cfg_lbmap - boot from NOR 1 */
 #define PIXIS_VSPEED0		0x17	/* VELA VSpeed 0 */
 #define PIXIS_VSPEED1		0x18	/* VELA VSpeed 1 */
 #define PIXIS_VSPEED2		0x19	/* VELA VSpeed 2 */

include/configs/P2020DS.h

@@ -282,6 +282,11 @@ extern unsigned long calculate_board_ddr_clk(unsigned long dummy);
 #define PIXIS_VWATCH		0x24	/* Watchdog Register */
 #define PIXIS_LED		0x25	/* LED Register */
 
+#define PIXIS_SW(x)		0x20 + (x - 1) * 2
+#define PIXIS_EN(x)		0x21 + (x - 1) * 2
+#define PIXIS_SW7_LBMAP		0xc0	/* SW7 - cfg_lbmap */
+#define PIXIS_SW7_VBANK		0x30	/* SW7 - cfg_vbank */
+
 /* old pixis referenced names */
 #define PIXIS_VCLKH		0x19	/* VELA VCLKH register */
 #define PIXIS_VCLKL		0x1A	/* VELA VCLKL register */