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/*
* Renesas SCP/MCP Software
* Copyright (c) 2020, Renesas Electronics Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef SOFTWARE_MMAP_H
#define SOFTWARE_MMAP_H
#include <system_mmap.h>
#include <fwk_macros.h>
/*
* The 4KiB AP/SCP Shared memory at the base of Trusted SRAM is used for several
* purposes. These are: the Shared Data Storage (SDS) Memory Region, the SCMI
* secure payload areas, and the context area for Application Processor
* firmware.
*
* Shared Data Storage (SDS) Memory Region: Used for structured storage of data
* that is shared between SCP Firmware and Application Processor firmware. The
* SDS Memory Region occupies the area between the context region base and
* the SCMI Secure Payload base.
*
* SCMI Secure Payload Areas: Storage for SCMI message contents in both the
* Agent->Platform and Platform->Agent directions.
*
* Application Processor Context Area: The usage of this area is defined by the
* firmware running on the Application Processors. The SCP Firmware must zero
* this memory before releasing any Application Processors. This area must
* always be located in the top 64 bytes of the 4KiB reserved region.
*
* +-----------------------+ 4096
* | |
* 64B | AP Context Area |
* | |
* +-----------------------+
* | |
* 256B | Unused |
* | |
* +-----------------------+
* | |
* | SCMI Sec. Payload |
* 128B | Platform to Agent |
* | |
* +-----------------------+
* | |
* 128B | SCMI Sec. Payload |
* | Agent to Platform |
* | |
* +-----------------------+
* | |
* 3520B | SDS Memory Region |
* | |
* +-----------------------+ 0
*/
/* Secure shared memory at the base of Trusted SRAM */
#define SHARED_SECURE_BASE (TRUSTED_RAM_BASE)
#define SHARED_SECURE_SIZE (4 * FWK_KIB)
/* SDS Memory Region */
#define SDS_MEM_BASE (SHARED_SECURE_BASE)
#if 0 /* Tentative */
# define SDS_MEM_SIZE (3520)
#else
# define SDS_MEM_SIZE (0)
#endif
/* AP Context Area */
#define AP_CONTEXT_BASE \
(SHARED_SECURE_BASE + SHARED_SECURE_SIZE - AP_CONTEXT_SIZE)
#define AP_CONTEXT_SIZE (64)
/* SCMI Secure Payload Areas */
#define SCMI_PAYLOAD_SIZE (128)
#define SCMI_PAYLOAD_S_A2P_BASE (SDS_MEM_BASE + SDS_MEM_SIZE)
#define SCMI_PAYLOAD_S_P2A_BASE (SCMI_PAYLOAD_S_A2P_BASE + SCMI_PAYLOAD_SIZE)
/*
* The 4KiB AP/SCP Shared memory at the base of Non-trusted SRAM is used for the
* SCMI non-secure payload areas.
*
* Two SCMI non-Secure Payload Areas: Storage for SCMI message contents in both
* the Agent->Platform and Platform->Agent directions.
*
* +-----------------------+ 4096
* 3584B | Unused |
* +-----------------------+
* | |
* | Non-Sec. Channel 1 |
* | SCMI non-Sec. Payload |
* 128B | Platform to Agent |
* | |
* +-----------------------+
* | |
* | Non-Sec. Channel 1 |
* 128B | SCMI non-Sec. Payload |
* | Agent to Platform |
* | |
* +-----------------------+
* | |
* | Non-Sec. Channel 0 |
* | SCMI non-Sec. Payload |
* 128B | Platform to Agent |
* | |
* +-----------------------+
* | |
* | Non-Sec. Channel 0 |
* 128B | SCMI non-Sec. Payload |
* | Agent to Platform |
* | |
* +-----------------------+ 0
*/
/* Non-secure shared memory at the base of Non-trusted SRAM */
#define SHARED_NONSECURE_BASE (NONTRUSTED_RAM_BASE)
#define SHARED_NONSECURE_SIZE (4 * FWK_KIB)
/* SCMI Non-Secure Payload Areas */
#define SCMI_PAYLOAD0_NS_A2P_BASE (SHARED_NONSECURE_BASE)
#define SCMI_PAYLOAD0_NS_P2A_BASE \
(SCMI_PAYLOAD0_NS_A2P_BASE + SCMI_PAYLOAD_SIZE)
#define SCMI_PAYLOAD1_NS_A2P_BASE \
(SCMI_PAYLOAD0_NS_P2A_BASE + SCMI_PAYLOAD_SIZE)
#define SCMI_PAYLOAD1_NS_P2A_BASE \
(SCMI_PAYLOAD1_NS_A2P_BASE + SCMI_PAYLOAD_SIZE)
#endif /* SOFTWARE_MMAP_H */
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