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https://github.com/riscv-software-src/opensbi
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9a7a677d5f
Let us move SiFive platform overrides for FU540 and FU740 into a separate directory so better maintainability. Other SoC vendors can also create their own directory under platform/generic. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>
48 lines
1.2 KiB
C
48 lines
1.2 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 <platform_override.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/fdt/fdt_fixup.h>
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static u64 sifive_fu540_tlbr_flush_limit(const struct fdt_match *match)
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{
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/*
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* The sfence.vma by virtual address does not work on
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* SiFive FU540 so we return remote TLB flush limit as zero.
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*/
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return 0;
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}
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static int sifive_fu540_fdt_fixup(void *fdt, const struct fdt_match *match)
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{
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/*
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* SiFive Freedom U540 has an erratum that prevents S-mode software
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* to access a PMP protected region using 1GB page table mapping, so
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* always add the no-map attribute on this platform.
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*/
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fdt_reserved_memory_nomap_fixup(fdt);
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return 0;
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}
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static const struct fdt_match sifive_fu540_match[] = {
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{ .compatible = "sifive,fu540" },
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{ .compatible = "sifive,fu540g" },
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{ .compatible = "sifive,fu540-c000" },
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{ .compatible = "sifive,hifive-unleashed-a00" },
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{ },
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};
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const struct platform_override sifive_fu540 = {
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.match_table = sifive_fu540_match,
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.tlbr_flush_limit = sifive_fu540_tlbr_flush_limit,
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.fdt_fixup = sifive_fu540_fdt_fixup,
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};
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