222297ee07
Introduce macros to define initialization routines for OpenAMP resource table entries. This will allow to extend the default OpenAMP resource table with vendor-specific data structures. Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Copyright (c) 2020 STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* In addition to the standard ELF segments, most remote processors would
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* also include a special section which we call "the resource table".
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*
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* The resource table contains system resources that the remote processor
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* requires before it should be powered on, such as allocation of physically
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* contiguous memory, or iommu mapping of certain on-chip peripherals.
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* In addition to system resources, the resource table may also contain
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* resource entries that publish the existence of supported features
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* or configurations by the remote processor, such as trace buffers and
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* supported virtio devices (and their configurations).
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* Dependencies:
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* to be compliant with Linux kernel OS the resource table must be linked in a
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* specific section named ".resource_table".
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* Related documentation:
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* https://www.kernel.org/doc/Documentation/remoteproc.txt
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* https://github.com/OpenAMP/open-amp/wiki/OpenAMP-Life-Cycle-Management
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*/
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#include <zephyr/kernel.h>
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#include <resource_table.h>
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#ifdef CONFIG_OPENAMP_COPY_RSC_TABLE
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#define RSC_TABLE_ADDR DT_REG_ADDR(DT_CHOSEN(zephyr_ipc_rsc_table))
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#define RSC_TABLE_SIZE DT_REG_SIZE(DT_CHOSEN(zephyr_ipc_rsc_table))
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BUILD_ASSERT(sizeof(struct fw_resource_table) <= RSC_TABLE_SIZE);
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#endif
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extern char ram_console_buf[];
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#define __resource Z_GENERIC_SECTION(.resource_table)
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static struct fw_resource_table __resource resource_table = RESOURCE_TABLE_INIT;
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void rsc_table_get(void **table_ptr, int *length)
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{
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*length = sizeof(resource_table);
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#ifdef CONFIG_OPENAMP_COPY_RSC_TABLE
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*table_ptr = (void *)RSC_TABLE_ADDR;
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memcpy(*table_ptr, &resource_table, *length);
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#else
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*table_ptr = &resource_table;
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#endif
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}
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#if (CONFIG_OPENAMP_RSC_TABLE_NUM_RPMSG_BUFF > 0)
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struct fw_rsc_vdev *rsc_table_to_vdev(void *rsc_table)
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{
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return &((struct fw_resource_table *)rsc_table)->vdev;
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}
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struct fw_rsc_vdev_vring *rsc_table_get_vring0(void *rsc_table)
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{
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return &((struct fw_resource_table *)rsc_table)->vring0;
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}
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struct fw_rsc_vdev_vring *rsc_table_get_vring1(void *rsc_table)
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{
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return &((struct fw_resource_table *)rsc_table)->vring1;
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}
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#endif
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