mirror of
https://github.com/revyos/thead-opensbi.git
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2a01b611c9
backport commit a8ee82cd8c008f09c91b5c307de4c9b37660ff71 upstream Althoug the MTIMER part of a C9xx CLINT differs from a SiFive one, the MSWI part is compliant. Add T-Head C9xx CLINT compatible string to fdt_ipi_mswi code, sharing the same codepath with SiFive CLINT. Signed-off-by: Icenowy Zheng <uwu@icenowy.me> Reviewed-by: Anup Patel <anup@brainfault.org>
50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <sbi/sbi_error.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/ipi/fdt_ipi.h>
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#include <sbi_utils/sys/clint.h>
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#define CLINT_IPI_MAX_NR 16
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static unsigned long clint_ipi_count = 0;
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static struct clint_data clint_ipi[CLINT_IPI_MAX_NR];
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static int ipi_clint_cold_init(void *fdt, int nodeoff,
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const struct fdt_match *match)
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{
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int rc;
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struct clint_data *ci;
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if (CLINT_IPI_MAX_NR <= clint_ipi_count)
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return SBI_ENOSPC;
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ci = &clint_ipi[clint_ipi_count++];
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rc = fdt_parse_clint_node(fdt, nodeoff, FALSE, ci);
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if (rc)
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return rc;
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return clint_cold_ipi_init(ci);
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}
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static const struct fdt_match ipi_clint_match[] = {
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{ .compatible = "riscv,clint0" },
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{ .compatible = "sifive,clint0" },
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{ .compatible = "thead,c900-clint" },
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{ },
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};
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struct fdt_ipi fdt_ipi_clint = {
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.match_table = ipi_clint_match,
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.cold_init = ipi_clint_cold_init,
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.warm_init = clint_warm_ipi_init,
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.exit = NULL,
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};
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