cb4abe62ba
This adds support for performing platform_reset() on all supported devices, using early boot enumeration of chipc capabilities and available cores. - Added Broadcom-specific MIPS CP0 register definitions used by BCM4785-specific reset handling. - Added a bcm_platform structure for tracking chipc/pmu/cfe platform data. - Extended the BCMA EROM API to support early boot lookup of core info (including port/region mappings). - Extended platform_reset() to support PMU, PMU+AOB, and non-PMU devices. Reviewed by: mizhka Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D7539
101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/*-
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* Copyright (c) 2016 Landon Fuller <landonf@FreeBSD.org>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <machine/bus.h>
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#include <dev/bhnd/bhnd.h>
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#include <dev/bhnd/bcma/bcma_eromvar.h>
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#include "bcm_machdep.h"
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#define BCMFC_ERR(fmt, ...) printf("%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
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int
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bcm_find_core_bcma(struct bhnd_chipid *chipid, bhnd_devclass_t devclass,
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int unit, struct bhnd_core_info *info, uintptr_t *addr)
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{
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struct bcma_erom erom;
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struct bcma_erom_core core;
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struct bcma_erom_sport_region region;
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bhnd_devclass_t core_class;
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int error;
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error = bhnd_erom_bus_space_open(&erom, NULL, mips_bus_space_generic,
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(bus_space_handle_t) BCM_SOC_ADDR(chipid->enum_addr, 0), 0);
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if (error) {
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BCMFC_ERR("erom open failed: %d\n", error);
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return (error);
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}
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for (u_long core_index = 0; core_index < ULONG_MAX; core_index++) {
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/* Fetch next core record */
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if ((error = bcma_erom_seek_next_core(&erom)))
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return (error);
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if ((error = bcma_erom_parse_core(&erom, &core))) {
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BCMFC_ERR("core parse failed: %d\n", error);
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return (error);
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}
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/* Check for match */
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core_class = bhnd_find_core_class(core.vendor,
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core.device);
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if (core_class != devclass)
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continue;
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/* Provide the basic core info */
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if (info != NULL)
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bcma_erom_to_core_info(&core, core_index, 0, info);
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/* Provide the core's device0.0 port address */
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error = bcma_erom_seek_core_sport_region(&erom, core_index,
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BHND_PORT_DEVICE, 0, 0);
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if (error) {
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BCMFC_ERR("sport not found: %d\n", error);
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return (error);
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}
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if ((error = bcma_erom_parse_sport_region(&erom, ®ion))) {
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BCMFC_ERR("sport parse failed: %d\n", error);
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return (error);
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}
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if (addr != NULL)
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*addr = region.base_addr;
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return (0);
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}
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/* Not found */
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return (ENOENT);
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}
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