106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* Always ON (AON) register interface between bootloader and Linux
|
||
|
|
*
|
||
|
|
* Copyright © 2014-2017 Broadcom
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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__ */
|