imx: mx7: move get_boot_device to cpu.c

Move get_boot_device to cpu.c to prepare adding i.MX8M support,
because i.MX8M share same code with i.MX7.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>

arch/arm/include/asm/arch-mx7/imx-regs.h

@@ -1210,14 +1210,6 @@ extern void pcie_power_off(void);
 	readl(USBOTG2_IPS_BASE_ADDR + 0x158))
 #define	disconnect_from_pc(void) writel(0x0, USBOTG1_IPS_BASE_ADDR + 0x140)
 
-/* Boot device type */
-#define BOOT_TYPE_SD		0x1
-#define BOOT_TYPE_MMC		0x2
-#define BOOT_TYPE_NAND		0x3
-#define BOOT_TYPE_QSPI		0x4
-#define BOOT_TYPE_WEIM		0x5
-#define BOOT_TYPE_SPINOR	0x6
-
 struct bootrom_sw_info {
 	u8 reserved_1;
 	u8 boot_dev_instance;

arch/arm/include/asm/mach-imx/boot_mode.h

@@ -31,6 +31,15 @@ enum boot_device {
 	BOOT_DEV_NUM = UNKNOWN_BOOT,
 };
 
+/* Boot device type */
+#define BOOT_TYPE_SD		0x1
+#define BOOT_TYPE_MMC		0x2
+#define BOOT_TYPE_NAND		0x3
+#define BOOT_TYPE_QSPI		0x4
+#define BOOT_TYPE_WEIM		0x5
+#define BOOT_TYPE_SPINOR	0x6
+#define BOOT_TYPE_USB		0xF
+
 struct boot_mode {
 	const char *name;
 	unsigned cfg_val;

arch/arm/mach-imx/cpu.c

@@ -16,6 +16,7 @@
 #include <asm/arch/clock.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/crm_regs.h>
+#include <asm/mach-imx/boot_mode.h>
 #include <imx_thermal.h>
 #include <ipu_pixfmt.h>
 #include <thermal.h>
@@ -409,6 +410,43 @@ u32 get_cpu_temp_grade(int *minc, int *maxc)
 }
 #endif
 
+#if defined(CONFIG_MX7)
+enum boot_device get_boot_device(void)
+{
+	struct bootrom_sw_info **p =
+		(struct bootrom_sw_info **)(ulong)ROM_SW_INFO_ADDR;
+
+	enum boot_device boot_dev = SD1_BOOT;
+	u8 boot_type = (*p)->boot_dev_type;
+	u8 boot_instance = (*p)->boot_dev_instance;
+
+	switch (boot_type) {
+	case BOOT_TYPE_SD:
+		boot_dev = boot_instance + SD1_BOOT;
+		break;
+	case BOOT_TYPE_MMC:
+		boot_dev = boot_instance + MMC1_BOOT;
+		break;
+	case BOOT_TYPE_NAND:
+		boot_dev = NAND_BOOT;
+		break;
+	case BOOT_TYPE_QSPI:
+		boot_dev = QSPI_BOOT;
+		break;
+	case BOOT_TYPE_WEIM:
+		boot_dev = WEIM_NOR_BOOT;
+		break;
+	case BOOT_TYPE_SPINOR:
+		boot_dev = SPI_NOR_BOOT;
+		break;
+	default:
+		break;
+	}
+
+	return boot_dev;
+}
+#endif
+
 #ifdef CONFIG_NXP_BOARD_REVISION
 int nxp_board_rev(void)
 {

arch/arm/mach-imx/mx7/soc.c

@@ -250,41 +250,6 @@ const struct boot_mode soc_boot_modes[] = {
 	{NULL,		0},
 };
 
-enum boot_device get_boot_device(void)
-{
-	struct bootrom_sw_info **p =
-		(struct bootrom_sw_info **)ROM_SW_INFO_ADDR;
-
-	enum boot_device boot_dev = SD1_BOOT;
-	u8 boot_type = (*p)->boot_dev_type;
-	u8 boot_instance = (*p)->boot_dev_instance;
-
-	switch (boot_type) {
-	case BOOT_TYPE_SD:
-		boot_dev = boot_instance + SD1_BOOT;
-		break;
-	case BOOT_TYPE_MMC:
-		boot_dev = boot_instance + MMC1_BOOT;
-		break;
-	case BOOT_TYPE_NAND:
-		boot_dev = NAND_BOOT;
-		break;
-	case BOOT_TYPE_QSPI:
-		boot_dev = QSPI_BOOT;
-		break;
-	case BOOT_TYPE_WEIM:
-		boot_dev = WEIM_NOR_BOOT;
-		break;
-	case BOOT_TYPE_SPINOR:
-		boot_dev = SPI_NOR_BOOT;
-		break;
-	default:
-		break;
-	}
-
-	return boot_dev;
-}
-
 #ifdef CONFIG_ENV_IS_IN_MMC
 __weak int board_mmc_get_env_dev(int devno)
 {