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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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