arc: devboards: Implement checkboard()

This allows us to print nice board name on boot.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

board/synopsys/axs10x/axs10x.c

@@ -109,3 +109,11 @@ void smp_kick_all_cpus(void)
 	writel(cmd, (void __iomem *)AXC003_CREG_CPU_START);
 }
 #endif
+
+int checkboard(void)
+{
+	printf("Board: ARC Software Development Platform AXS%s\n",
+	     is_isa_arcv2() ? "103" : "101");
+
+	return 0;
+};

board/synopsys/emsdp/emsdp.c

@@ -80,6 +80,7 @@ int board_mmc_getcd(struct mmc *mmc)
 #define CREG_BASE		0xF0001000
 #define CREG_BOOT		(void *)(CREG_BASE + 0x0FF0)
 #define CREG_IP_SW_RESET	(void *)(CREG_BASE + 0x0FF0)
+#define CREG_IP_VERSION		(void *)(CREG_BASE + 0x0FF8)
 
 /* Bits in CREG_BOOT register */
 #define CREG_BOOT_WP_BIT	BIT(8)
@@ -133,3 +134,12 @@ U_BOOT_CMD(
 	"rom unlock - Unlock non-volatile memory for writing\n"
 	"emsdp rom lock - Lock non-volatile memory to prevent writing\n"
 );
+
+int checkboard(void)
+{
+	int version = readl(CREG_IP_VERSION);
+
+	printf("Board: ARC EM Software Development Platform v%d.%d\n",
+	       (version >> 16) & 0xff, version & 0xff);
+	return 0;
+};

board/synopsys/hsdk/hsdk.c

@@ -1053,3 +1053,9 @@ int board_mmc_init(bd_t *bis)
 
 	return 0;
 }
+
+int checkboard(void)
+{
+	puts("Board: Synopsys ARC HS Development Kit\n");
+	return 0;
+};