u-boot-brain/arch/arm/mach-k3/include/mach/am64_spl.h
Keerthy 57dba04afb arm: mach-k3: am642: Add support for boot device detection
AM642 allows for booting from primary or backup boot media.
Both media can be chosen individually based on switch settings.
ROM looks for a valid image in primary boot media, if not found
then looks in backup boot media. In order to pass this boot media
information to boot loader, ROM stores a value at a particular
address. Add support for reading this information and determining
the boot media correctly.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
2021-05-12 16:27:57 +05:30

45 lines
1.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
* Keerthy <j-keerthy@ti.com>
*/
#ifndef _ASM_ARCH_AM64_SPL_H_
#define _ASM_ARCH_AM64_SPL_H_
/* Primary BootMode devices */
#define BOOT_DEVICE_RAM 0x00
#define BOOT_DEVICE_OSPI 0x01
#define BOOT_DEVICE_QSPI 0x02
#define BOOT_DEVICE_SPI 0x03
#define BOOT_DEVICE_ETHERNET 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 0x0A
#define BOOT_DEVICE_GPMC_NOR 0x0C
#define BOOT_DEVICE_PCIE 0x0D
#define BOOT_DEVICE_XSPI 0x0E
#define BOOT_DEVICE_NOBOOT 0x0F
#define BOOT_DEVICE_MMC2 0x08
#define BOOT_DEVICE_MMC1 0x09
/* INVALID */
#define BOOT_DEVICE_MMC2_2 0x1F
/* Backup BootMode devices */
#define BACKUP_BOOT_DEVICE_USB 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 K3_PRIMARY_BOOTMODE 0x0
#endif