u-boot/arch/arm/mach-k3/include/mach/am6_hardware.h
Andrew F. Davis 407a219261 arm: K3: Avoid use of MCU_PSRAM0 before SYSFW is loaded
On HS devices the 512b region of reset isolated memory called
MCU_PSRAM0 is firewalled by default. Until SYSFW is loaded we
cannot use this memory. It is only used to store a single value
left at the end of SRAM by ROM that will be needed later. Save
that value to a global variable stored in the .data section.
This section is used as .bss will be cleared between saving
this value and using it.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-04-26 17:51:51 -04:00

47 lines
1.6 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* K3: AM6 SoC definitions, structures etc.
*
* (C) Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
*/
#ifndef __ASM_ARCH_AM6_HARDWARE_H
#define __ASM_ARCH_AM6_HARDWARE_H
#include <config.h>
#define CTRL_MMR0_BASE 0x00100000
#define CTRLMMR_MAIN_DEVSTAT (CTRL_MMR0_BASE + 0x30)
#define CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK GENMASK(3, 0)
#define CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT 0
#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK GENMASK(6, 4)
#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT 4
#define CTRLMMR_MAIN_DEVSTAT_MMC_PORT_MASK GENMASK(12, 12)
#define CTRLMMR_MAIN_DEVSTAT_MMC_PORT_SHIFT 12
#define CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_MASK GENMASK(14, 14)
#define CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_SHIFT 14
#define CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_MASK GENMASK(17, 17)
#define CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT 12
#define WKUP_CTRL_MMR0_BASE 0x43000000
#define MCU_CTRL_MMR0_BASE 0x40f00000
/*
* The CTRL_MMR0 memory space is divided into several equally-spaced
* partitions, so defining the partition size allows us to determine
* register addresses common to those partitions.
*/
#define CTRL_MMR0_PARTITION_SIZE 0x4000
/*
* CTRL_MMR0, WKUP_CTRL_MMR0, and MCU_CTR_MMR0 lock/kick-mechanism
* shared register definitions.
*/
#define CTRLMMR_LOCK_KICK0 0x01008
#define CTRLMMR_LOCK_KICK0_UNLOCK_VAL 0x68ef3490
#define CTRLMMR_LOCK_KICK0_UNLOCKED_MASK BIT(0)
#define CTRLMMR_LOCK_KICK0_UNLOCKED_SHIFT 0
#define CTRLMMR_LOCK_KICK1 0x0100c
#define CTRLMMR_LOCK_KICK1_UNLOCK_VAL 0xd172bc5a
#endif /* __ASM_ARCH_AM6_HARDWARE_H */