39863b66bd
The type of the resource table is known, casting to and from void* only hides this type which can prevent the compiler from giving helpful warnings. One warning would have been the accidental use of "st_resource_table" in a cast, a struct which does not exist. Use the fw_resource_table type when dealing with resource tables. Signed-off-by: Andrew Davis <afd@ti.com>
82 lines
2.2 KiB
C
82 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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extern char ram_console[];
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#define __resource Z_GENERIC_SECTION(.resource_table)
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static struct fw_resource_table __resource resource_table = {
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.hdr = {
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.ver = 1,
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.num = RSC_TABLE_NUM_ENTRY,
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},
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.offset = {
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#if (CONFIG_OPENAMP_RSC_TABLE_NUM_RPMSG_BUFF > 0)
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offsetof(struct fw_resource_table, vdev),
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#endif
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#if defined(CONFIG_RAM_CONSOLE)
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offsetof(struct fw_resource_table, cm_trace),
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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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/* Virtio device entry */
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.vdev = {
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RSC_VDEV, VIRTIO_ID_RPMSG, 0, RPMSG_IPU_C0_FEATURES, 0, 0, 0,
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VRING_COUNT, {0, 0},
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},
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/* Vring rsc entry - part of vdev rsc entry */
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.vring0 = {VRING_TX_ADDRESS, VRING_ALIGNMENT,
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CONFIG_OPENAMP_RSC_TABLE_NUM_RPMSG_BUFF,
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VRING0_ID, 0},
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.vring1 = {VRING_RX_ADDRESS, VRING_ALIGNMENT,
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CONFIG_OPENAMP_RSC_TABLE_NUM_RPMSG_BUFF,
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VRING1_ID, 0},
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#endif
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#if defined(CONFIG_RAM_CONSOLE)
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.cm_trace = {
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RSC_TRACE,
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(uint32_t)ram_console, CONFIG_RAM_CONSOLE_BUFFER_SIZE + 1, 0,
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"Zephyr_log",
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},
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#endif
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};
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void rsc_table_get(struct fw_resource_table **table_ptr, int *length)
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{
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*table_ptr = &resource_table;
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*length = sizeof(resource_table);
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}
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