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- /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2020 Western Digital Corporation or its affiliates.
- *
- * Authors:
- * Anup Patel <anup.patel@wdc.com>
- */
- #include <platform_override.h>
- #include <sbi_utils/fdt/fdt_helper.h>
- #include <sbi_utils/fdt/fdt_fixup.h>
- static u64 sifive_fu540_tlbr_flush_limit(const struct fdt_match *match)
- {
- /*
- * The sfence.vma by virtual address does not work on
- * SiFive FU540 so we return remote TLB flush limit as zero.
- */
- return 0;
- }
- static int sifive_fu540_fdt_fixup(void *fdt, const struct fdt_match *match)
- {
- /*
- * SiFive Freedom U540 has an erratum that prevents S-mode software
- * to access a PMP protected region using 1GB page table mapping, so
- * always add the no-map attribute on this platform.
- */
- fdt_reserved_memory_nomap_fixup(fdt);
- return 0;
- }
- static const struct fdt_match sifive_fu540_match[] = {
- { .compatible = "sifive,fu540" },
- { .compatible = "sifive,fu540g" },
- { .compatible = "sifive,fu540-c000" },
- { .compatible = "sifive,hifive-unleashed-a00" },
- { },
- };
- const struct platform_override sifive_fu540 = {
- .match_table = sifive_fu540_match,
- .tlbr_flush_limit = sifive_fu540_tlbr_flush_limit,
- .fdt_fixup = sifive_fu540_fdt_fixup,
- };
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