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lib: open-amp: Add NXP-specific resource table implementation

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Implement NXP-specific support for the remote processor
resource table, including custom definitions and initialization
logic to meet NXP's communication requirements.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
This commit is contained in:
Iuliana Prodan 2025-06-16 13:12:25 +03:00 committed by Benjamin Cabé
parent 7c82d6c2ab
commit b3e4809554
2 changed files with 125 additions and 0 deletions
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75
lib/open-amp/vendor/nxp_resource_table.c vendored Normal file
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/*
* Copyright 2025 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
/*
* NXP resource table
*
* Remote processors include a "resource table" section in addition
* to standard ELF segments.
*
* The resource table lists system resources needed before powering on,
* like contiguous memory allocation or IOMMU mapping.
* It also includes entries for supported features and configurations,
* such as trace buffers and virtio devices.
*
* Dependencies:
* Must be linked in the ".resource_table" section to comply with
* Linux kernel OS.
*
* Related documentation:
* https://www.kernel.org/doc/Documentation/remoteproc.txt
* https://openamp.readthedocs.io/en/latest/protocol_details/lifecyclemgmt.html
*/
#include "../vendor/nxp_resource_table.h"
#include <zephyr/kernel.h>
#define __resource Z_GENERIC_SECTION(.resource_table)
static struct nxp_resource_table __resource nxp_rsc_table = {
.hdr = {
.ver = 1,
.num = 2,
},
.offset = {
offsetof(struct nxp_resource_table, imx_vs_entry),
offsetof(struct nxp_resource_table, vdev),
},
.imx_vs_entry = {
.type = RSC_VENDOR_START,
/* length of the resource entry, without type, but including len */
.len = 0x10,
/* FW_RSC_NXP_S_MAGIC, 'n''x''p''s' */
.magic_num = 0x6E787073,
.version = 0x0,
/* require the host NOT to wait for a FW_READY response */
.features = 0x1,
},
/* 8 is the number of rpmsg buffers used */
VDEV_ENTRY_HELPER(8)
};
void rsc_table_get(void **table_ptr, int *length)
{
*length = sizeof(nxp_rsc_table);
*table_ptr = &nxp_rsc_table;
}
struct fw_rsc_vdev *rsc_table_to_vdev(void *rsc_table)
{
return &((struct nxp_resource_table *)rsc_table)->vdev;
}
struct fw_rsc_vdev_vring *rsc_table_get_vring0(void *rsc_table)
{
return &((struct nxp_resource_table *)rsc_table)->vring0;
}
struct fw_rsc_vdev_vring *rsc_table_get_vring1(void *rsc_table)
{
return &((struct nxp_resource_table *)rsc_table)->vring1;
}

50
lib/open-amp/vendor/nxp_resource_table.h vendored Normal file
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/*
* Copyright 2025 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef NXP_RESOURCE_TABLE_H__
#define NXP_RESOURCE_TABLE_H__
#include <resource_table.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* struct fw_rsc_imx_dsp - i.MX DSP specific info
*
* @type: type of the resource entry
* @len: length of the resource entry, without @type, but including @len field
* @magic_num: 32-bit magic number
* @version: version of data structure
* @features: feature flags supported by the i.MX DSP firmware
*
* This represents a DSP-specific resource in the firmware's
* resource table, providing information on supported features.
*/
struct fw_rsc_imx_dsp {
uint32_t type;
uint32_t len;
uint32_t magic_num;
uint32_t version;
uint32_t features;
} __packed;
struct nxp_resource_table {
struct resource_table hdr;
uint32_t offset[2];
struct fw_rsc_imx_dsp imx_vs_entry;
struct fw_rsc_vdev vdev;
struct fw_rsc_vdev_vring vring0;
struct fw_rsc_vdev_vring vring1;
} METAL_PACKED_END;
#ifdef __cplusplus
}
#endif
#endif