Release 4.17 drivers/soc/bcm/brcmstb/pm/aon_defs.h

/*
 * Always ON (AON) register interface between bootloader and Linux
 *
 * Copyright © 2014-2017 Broadcom
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#ifndef __BRCMSTB_AON_DEFS_H__

#define __BRCMSTB_AON_DEFS_H__

#include <linux/compiler.h>

/* Magic number in upper 16-bits */

#define BRCMSTB_S3_MAGIC_MASK                   0xffff0000

#define BRCMSTB_S3_MAGIC_SHORT                  0x5AFE0000


enum {
	/* Restore random key for AES memory verification (off = fixed key) */
	
S3_FLAG_LOAD_RANDKEY		= (1 << 0),

	/* Scratch buffer page table is present */
	
S3_FLAG_SCRATCH_BUFFER_TABLE	= (1 << 1),

	/* Skip all memory verification */
	
S3_FLAG_NO_MEM_VERIFY		= (1 << 2),

	/*
         * Modification of this bit reserved for bootloader only.
         * 1=PSCI started Linux, 0=Direct jump to Linux.
         */
	
S3_FLAG_PSCI_BOOT		= (1 << 3),

	/*
         * Modification of this bit reserved for bootloader only.
         * 1=64 bit boot, 0=32 bit boot.
         */
	
S3_FLAG_BOOTED64		= (1 << 4),
};


#define BRCMSTB_HASH_LEN			(128 / 8) 
/* 128-bit hash */


#define AON_REG_MAGIC_FLAGS			0x00

#define AON_REG_CONTROL_LOW			0x04

#define AON_REG_CONTROL_HIGH			0x08

#define AON_REG_S3_HASH				0x0c 
/* hash of S3 params */

#define AON_REG_CONTROL_HASH_LEN		0x1c

#define AON_REG_PANIC				0x20


#define BRCMSTB_S3_MAGIC		0x5AFEB007

#define BRCMSTB_PANIC_MAGIC		0x512E115E

#define BOOTLOADER_SCRATCH_SIZE		64

#define BRCMSTB_DTU_STATE_MAP_ENTRIES	(8*1024)

#define BRCMSTB_DTU_CONFIG_ENTRIES	(512)

#define BRCMSTB_DTU_COUNT		(2)


#define IMAGE_DESCRIPTORS_BUFSIZE	(2 * 1024)

#define S3_BOOTLOADER_RESERVED		(S3_FLAG_PSCI_BOOT | S3_FLAG_BOOTED64)


struct brcmstb_bootloader_dtu_table {
	
uint32_t	dtu_state_map[BRCMSTB_DTU_STATE_MAP_ENTRIES];
	
uint32_t	dtu_config[BRCMSTB_DTU_CONFIG_ENTRIES];
};

/*
 * Bootloader utilizes a custom parameter block left in DRAM for handling S3
 * warm resume
 */

struct brcmstb_s3_params {
	/* scratch memory for bootloader */
	
uint8_t scratch[BOOTLOADER_SCRATCH_SIZE];

	
uint32_t magic; /* BRCMSTB_S3_MAGIC */
	
uint64_t reentry; /* PA */

	/* descriptors */
	
uint32_t hash[BRCMSTB_HASH_LEN / 4];

	/*
         * If 0, then ignore this parameter (there is only one set of
         *   descriptors)
         *
         * If non-0, then a second set of descriptors is stored at:
         *
         *   descriptors + desc_offset_2
         *
         * The MAC result of both descriptors is XOR'd and stored in @hash
         */
	
uint32_t desc_offset_2;

	/*
         * (Physical) address of a brcmstb_bootloader_scratch_table, for
         * providing a large DRAM buffer to the bootloader
         */
	
uint64_t buffer_table;

	
uint32_t spare[70];

	
uint8_t descriptors[IMAGE_DESCRIPTORS_BUFSIZE];
	/*
         * Must be last member of struct. See brcmstb_pm_s3_finish() for reason.
         */
	
struct brcmstb_bootloader_dtu_table dtu[BRCMSTB_DTU_COUNT];

} __packed;

#endif /* __BRCMSTB_AON_DEFS_H__ */
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Directory: drivers/soc/bcm/brcmstb/pm

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