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https://github.com/riscv-software-src/opensbi
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6e5db7b09c
Several of these override functions access the FDT blob. Explicitly indicate which callbacks are allowed to modify the FDT blob by passing the parameter as a possibly-const pointer. This also reduces code size by deduplicating the call to fdt_get_address(). Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2022 Renesas Electronics Corp.
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*
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*/
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#include <andes/andes_pma.h>
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#include <andes/andes_pmu.h>
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#include <andes/andes_sbi.h>
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#include <platform_override.h>
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#include <sbi/sbi_domain.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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static const struct andes_pma_region renesas_rzfive_pma_regions[] = {
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{
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.pa = 0x58000000,
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.size = 0x8000000,
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.flags = ANDES_PMACFG_ETYP_NAPOT |
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ANDES_PMACFG_MTYP_MEM_NON_CACHE_BUF,
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.dt_populate = true,
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.shared_dma = true,
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.no_map = true,
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.dma_default = true,
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},
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};
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static int renesas_rzfive_final_init(bool cold_boot, void *fdt,
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const struct fdt_match *match)
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{
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return andes_pma_setup_regions(fdt, renesas_rzfive_pma_regions,
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array_size(renesas_rzfive_pma_regions));
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}
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static int renesas_rzfive_early_init(bool cold_boot, const void *fdt,
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const struct fdt_match *match)
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{
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/*
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* Renesas RZ/Five RISC-V SoC has Instruction local memory and
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* Data local memory (ILM & DLM) mapped between region 0x30000
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* to 0x4FFFF. When a virtual address falls within this range,
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* the MMU doesn't trigger a page fault; it assumes the virtual
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* address is a physical address which can cause undesired
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* behaviours for statically linked applications/libraries. To
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* avoid this, add the ILM/DLM memory regions to the root domain
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* region of the PMPU with permissions set to 0x0 for S/U modes
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* so that any access to these regions gets blocked and for M-mode
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* we grant full access.
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*/
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return sbi_domain_root_add_memrange(0x30000, 0x20000, 0x1000,
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SBI_DOMAIN_MEMREGION_M_RWX);
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}
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static const struct fdt_match renesas_rzfive_match[] = {
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{ .compatible = "renesas,r9a07g043f01" },
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{ /* sentinel */ }
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};
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const struct platform_override renesas_rzfive = {
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.match_table = renesas_rzfive_match,
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.early_init = renesas_rzfive_early_init,
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.final_init = renesas_rzfive_final_init,
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.vendor_ext_provider = andes_sbi_vendor_ext_provider,
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.extensions_init = andes_pmu_extensions_init,
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.pmu_init = andes_pmu_init,
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};
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