arm: mach-k3: introduce basic files to support the am62a

Introduce the mach-k3 files needed to properly boot TI's am62a SoC
family of devices

Signed-off-by: Bryan Brattlof <bb@ti.com>
diff --git a/arch/arm/mach-k3/include/mach/am62a_spl.h b/arch/arm/mach-k3/include/mach/am62a_spl.h
new file mode 100644
index 0000000..dd0f577
--- /dev/null
+++ b/arch/arm/mach-k3/include/mach/am62a_spl.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#ifndef _ASM_ARCH_AM62A_SPL_H_
+#define _ASM_ARCH_AM62A_SPL_H_
+
+/* Primary BootMode devices */
+#define BOOT_DEVICE_SPI_NAND		0x00
+#define BOOT_DEVICE_RAM		0xFF
+#define BOOT_DEVICE_OSPI		0x01
+#define BOOT_DEVICE_QSPI		0x02
+#define BOOT_DEVICE_SPI			0x03
+#define BOOT_DEVICE_CPGMAC		0x04
+#define BOOT_DEVICE_ETHERNET_RGMII	0x04
+#define BOOT_DEVICE_ETHERNET_RMII	0x05
+#define BOOT_DEVICE_I2C			0x06
+#define BOOT_DEVICE_UART		0x07
+#define BOOT_DEVICE_MMC			0x08
+#define BOOT_DEVICE_EMMC		0x09
+
+#define BOOT_DEVICE_USB			0x2A
+#define BOOT_DEVICE_DFU			0x0A
+#define BOOT_DEVICE_GPMC_NAND		0x0B
+#define BOOT_DEVICE_GPMC_NOR		0x0C
+#define BOOT_DEVICE_XSPI		0x0E
+#define BOOT_DEVICE_NOBOOT		0x0F
+
+/* U-Boot used aliases */
+#define BOOT_DEVICE_ETHERNET		0x04
+#define BOOT_DEVICE_SPINAND		0x10
+#define BOOT_DEVICE_MMC2		0x08
+#define BOOT_DEVICE_MMC1		0x09
+/* Invalid */
+#define BOOT_DEVICE_MMC2_2		0x1F
+
+/* Backup BootMode devices */
+#define BACKUP_BOOT_DEVICE_DFU		0x01
+#define BACKUP_BOOT_DEVICE_UART		0x03
+#define BACKUP_BOOT_DEVICE_ETHERNET	0x04
+#define BACKUP_BOOT_DEVICE_MMC		0x05
+#define BACKUP_BOOT_DEVICE_SPI		0x06
+#define BACKUP_BOOT_DEVICE_I2C		0x07
+#define BACKUP_BOOT_DEVICE_USB		0x09
+
+#define K3_PRIMARY_BOOTMODE		0x0
+
+#endif /* _ASM_ARCH_AM62A_SPL_H_ */