mirror of
https://github.com/riscv-software-src/opensbi
synced 2025-11-08 16:00:17 +00:00
38a6106b10
The MSWI present in the MIPS P8700 is compliant with the ACLINT specification, so add a dedicated compatible string for it. Signed-off-by: Benoît Monin <benoit.monin@bootlin.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20251027-p8700-aclint-v2-1-f10cbfb66e92@bootlin.com Signed-off-by: Anup Patel <anup@brainfault.org>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2021 Western Digital Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* Anup Patel <anup.patel@wdc.com>
|
|
*/
|
|
|
|
#include <sbi/sbi_error.h>
|
|
#include <sbi/sbi_heap.h>
|
|
#include <sbi_utils/fdt/fdt_driver.h>
|
|
#include <sbi_utils/fdt/fdt_helper.h>
|
|
#include <sbi_utils/ipi/aclint_mswi.h>
|
|
|
|
static int ipi_mswi_cold_init(const void *fdt, int nodeoff,
|
|
const struct fdt_match *match)
|
|
{
|
|
int rc;
|
|
unsigned long offset;
|
|
struct aclint_mswi_data *ms;
|
|
|
|
ms = sbi_zalloc(sizeof(*ms));
|
|
if (!ms)
|
|
return SBI_ENOMEM;
|
|
|
|
rc = fdt_parse_aclint_node(fdt, nodeoff, false, false,
|
|
&ms->addr, &ms->size, NULL, NULL,
|
|
&ms->first_hartid, &ms->hart_count);
|
|
if (rc) {
|
|
sbi_free(ms);
|
|
return rc;
|
|
}
|
|
|
|
if (match->data) {
|
|
/* Adjust MSWI address and size for CLINT device */
|
|
offset = *((unsigned long *)match->data);
|
|
ms->addr += offset;
|
|
if ((ms->size - offset) < ACLINT_MSWI_SIZE)
|
|
return SBI_EINVAL;
|
|
ms->size = ACLINT_MSWI_SIZE;
|
|
}
|
|
|
|
rc = aclint_mswi_cold_init(ms);
|
|
if (rc) {
|
|
sbi_free(ms);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const unsigned long clint_offset = CLINT_MSWI_OFFSET;
|
|
|
|
static const struct fdt_match ipi_mswi_match[] = {
|
|
{ .compatible = "riscv,clint0", .data = &clint_offset },
|
|
{ .compatible = "sifive,clint0", .data = &clint_offset },
|
|
{ .compatible = "thead,c900-clint", .data = &clint_offset },
|
|
{ .compatible = "thead,c900-aclint-mswi" },
|
|
{ .compatible = "mips,p8700-aclint-mswi" },
|
|
{ .compatible = "riscv,aclint-mswi" },
|
|
{ },
|
|
};
|
|
|
|
const struct fdt_driver fdt_ipi_mswi = {
|
|
.match_table = ipi_mswi_match,
|
|
.init = ipi_mswi_cold_init,
|
|
};
|