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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>
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:
hardware.h 823 B
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
* Lokesh Vutla <lokeshvutla@ti.com>
*/
#ifndef _ASM_ARCH_HARDWARE_H_
#define _ASM_ARCH_HARDWARE_H_
#ifdef CONFIG_SOC_K3_AM6
#include "am6_hardware.h"
#endif
#ifdef CONFIG_SOC_K3_J721E
#include "j721e_hardware.h"
#endif
#ifdef CONFIG_SOC_K3_AM642
#include "am64_hardware.h"
#endif
/* Assuming these addresses and definitions stay common across K3 devices */
#define CTRLMMR_WKUP_JTAG_ID 0x43000014
#define JTAG_ID_VARIANT_SHIFT 28
#define JTAG_ID_VARIANT_MASK (0xf << 28)
#define JTAG_ID_PARTNO_SHIFT 12
#define JTAG_ID_PARTNO_MASK (0xffff << 12)
#define K3_ROM_BOOT_HEADER_MAGIC "EXTBOOT"
struct rom_extended_boot_data {
char header[8];
u32 num_components;
};
#endif /* _ASM_ARCH_HARDWARE_H_ */