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dcfc52ad69
TI-SCI message protocol provides support for board configuration to assign resources and other board related operations. Introduce the board configuration capability support to the driver protocol as part of this change. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/*
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* Texas Instruments System Control Interface (TISCI) Protocol
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*
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* Communication protocol with TI SCI hardware
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* The system works in a message response protocol
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* See: http://processors.wiki.ti.com/index.php/TISCI for details
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*
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* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
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* Based on drivers/firmware/ti_sci.h from Linux.
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*
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*/
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#ifndef __TI_SCI_H
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#define __TI_SCI_H
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/* Generic Messages */
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#define TI_SCI_MSG_ENABLE_WDT 0x0000
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#define TI_SCI_MSG_WAKE_RESET 0x0001
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#define TI_SCI_MSG_VERSION 0x0002
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#define TI_SCI_MSG_WAKE_REASON 0x0003
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#define TI_SCI_MSG_GOODBYE 0x0004
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#define TI_SCI_MSG_SYS_RESET 0x0005
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#define TI_SCI_MSG_BOARD_CONFIG 0x000b
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#define TI_SCI_MSG_BOARD_CONFIG_RM 0x000c
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#define TI_SCI_MSG_BOARD_CONFIG_SECURITY 0x000d
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#define TI_SCI_MSG_BOARD_CONFIG_PM 0x000e
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/**
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* struct ti_sci_msg_hdr - Generic Message Header for All messages and responses
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* @type: Type of messages: One of TI_SCI_MSG* values
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* @host: Host of the message
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* @seq: Message identifier indicating a transfer sequence
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* @flags: Flag for the message
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*/
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struct ti_sci_msg_hdr {
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u16 type;
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u8 host;
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u8 seq;
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#define TI_SCI_MSG_FLAG(val) (1 << (val))
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#define TI_SCI_FLAG_REQ_GENERIC_NORESPONSE 0x0
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#define TI_SCI_FLAG_REQ_ACK_ON_RECEIVED TI_SCI_MSG_FLAG(0)
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#define TI_SCI_FLAG_REQ_ACK_ON_PROCESSED TI_SCI_MSG_FLAG(1)
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#define TI_SCI_FLAG_RESP_GENERIC_NACK 0x0
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#define TI_SCI_FLAG_RESP_GENERIC_ACK TI_SCI_MSG_FLAG(1)
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/* Additional Flags */
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u32 flags;
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} __packed;
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/**
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* struct ti_sci_secure_msg_hdr - Header that prefixes all TISCI messages sent
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* via secure transport.
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* @checksum: crc16 checksum for the entire message
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* @reserved: Reserved for future use.
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*/
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struct ti_sci_secure_msg_hdr {
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u16 checksum;
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u16 reserved;
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} __packed;
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/**
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* struct ti_sci_msg_resp_version - Response for a message
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* @hdr: Generic header
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* @firmware_description: String describing the firmware
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* @firmware_revision: Firmware revision
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* @abi_major: Major version of the ABI that firmware supports
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* @abi_minor: Minor version of the ABI that firmware supports
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*
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* In general, ABI version changes follow the rule that minor version increments
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* are backward compatible. Major revision changes in ABI may not be
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* backward compatible.
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*
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* Response to a generic message with message type TI_SCI_MSG_VERSION
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*/
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struct ti_sci_msg_resp_version {
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struct ti_sci_msg_hdr hdr;
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char firmware_description[32];
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u16 firmware_revision;
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u8 abi_major;
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u8 abi_minor;
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} __packed;
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/**
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* struct ti_sci_msg_board_config - Board configuration message
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* @hdr: Generic Header
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* @boardcfgp_low: Lower 32 bit of the pointer pointing to the board
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* configuration data
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* @boardcfgp_high: Upper 32 bit of the pointer pointing to the board
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* configuration data
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* @boardcfg_size: Size of board configuration data object
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* Request type is TI_SCI_MSG_BOARD_CONFIG, responded with a generic
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* ACK/NACK message.
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*/
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struct ti_sci_msg_board_config {
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struct ti_sci_msg_hdr hdr;
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u32 boardcfgp_low;
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u32 boardcfgp_high;
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u16 boardcfg_size;
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} __packed;
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#endif /* __TI_SCI_H */
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