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arm: acpi: Add generic ACPI methods
Add generic ACPI code to generate - MADT GICC - MADT GICD - MADT GICR - MADT GIC ITS - PPTT processor - PPTT cache as commonly used on arm platforms. Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-by: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com> Cc: Simon Glass <sjg@chromium.org>
This commit is contained in:
Patrick Rudolph
Tom Rini
parent
04001adce1
commit
f36e29e8da
@ -0,0 +1,115 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __ASM_ACPI_TABLE_H__
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#define __ASM_ACPI_TABLE_H__
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#ifndef __ACPI__
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#include <acpi/acpi_table.h>
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/**
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* acpi_write_madt_gicc() - Write out a MADT GICC sub-table
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*
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* Write out the GIC CPU Interface sub-table.
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*
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* @gicc: Pointer to place to put the sub-table
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* @cpu_num: GIC's CPU Interface Number
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* @perf_gsiv: The GSIV used for Performance Monitoring Interrupts
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* @phys_base: Address at which the processor can access this
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* GIC CPU Interface
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* @gicv: Address of the GIC virtual CPU interface registers
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* @gich: Address of the GIC virtual interface control block
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* registers
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* @vgic_maint_irq: GSIV for Virtual GIC maintenance interrupt
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* @gicr_base: Physical address of the associated Redistributor
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* @mpidr: MPIDR as defined by ARM architecture
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* @efficiency: Describes the relative power efficiency
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*/
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void acpi_write_madt_gicc(struct acpi_madt_gicc *gicc, uint cpu_num,
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uint perf_gsiv, ulong phys_base, ulong gicv,
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ulong gich, uint vgic_maint_irq, u64 gicr_base,
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ulong mpidr, uint efficiency);
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/**
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* acpi_write_madt_gicd() - Write out a MADT GICD sub-table
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*
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* Write out the GIC Distributor sub-table.
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*
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* @gicd: Pointer to place to put the sub-table
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* @gic_id: This GIC Distributor's hardware ID
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* @phys_base: The 64-bit physical address for this Distributor
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* @gic_version: GIC version
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*/
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void acpi_write_madt_gicd(struct acpi_madt_gicd *gicd, uint gic_id,
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ulong phys_base, uint gic_version);
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/**
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* acpi_write_madt_gicr() - Write out a MADT GICR sub-table
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*
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* Write out the GIC Redistributor sub-table.
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*
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* @gicr: Pointer to place to put the sub-table
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* @discovery_range_base_address: Physical address of a page range
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* containing all GIC Redistributors
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* @discovery_range_length: Length of the GIC Redistributor
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* Discovery page range
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*/
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void acpi_write_madt_gicr(struct acpi_madt_gicr *gicr,
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u64 discovery_range_base_address,
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u32 discovery_range_length);
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/**
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* acpi_write_madt_its() - Write out a MADT ITS sub-table
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*
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* Write out the GIC Interrupt Translation Service sub-table.
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*
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* @its: Pointer to place to put the sub-table
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* @its_id: Uniqueue GIC ITS ID
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* @physical_base_address: Physical address for the Interrupt
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* Translation Service
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*/
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void acpi_write_madt_its(struct acpi_madt_its *its,
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u32 its_id,
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u64 physical_base_address);
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/**
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* acpi_pptt_add_proc() - Write out a PPTT processor sub-table
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*
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* Write out the Processor Properties Topology Table processor sub-table.
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*
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* @ctx: ACPI context pointer
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* @flags: Processor Structure Flags
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* @parent: Reference to parent processor
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* @proc_id: ACPI processor ID as defined in MADT
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* @num_resources: Number of resource structure references
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* @resource_list: References to other PPTT structures
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* Return: offset from start of PPTT in bytes
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*/
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int acpi_pptt_add_proc(struct acpi_ctx *ctx, const u32 flags, const u32 parent,
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const u32 proc_id, const u32 num_resources,
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const u32 *resource_list);
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/**
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* acpi_pptt_add_cache() - Write out a PPTT cache sub-table
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*
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* Write out the Processor Properties Topology Table cache sub-table.
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*
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* @ctx: ACPI context pointer
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* @flags: Cache Structure Flags
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* @next_cache_level: Reference to next level of cache
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* @size: Size of the cache in bytes
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* @sets: Number of sets in the cache
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* @assoc: Integer number of ways
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* @attributes: Allocation type, Cache type, policy
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* @line_size: Line size in bytes
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* Return: offset from start of PPTT in bytes
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*/
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int acpi_pptt_add_cache(struct acpi_ctx *ctx, const u32 flags,
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const u32 next_cache_level, const u32 size,
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const u32 sets, const u8 assoc, const u8 attributes,
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const u16 line_size);
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#endif /* !__ASSEMBLY__ */
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#endif /* !__ACPI__ */
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#endif /* __ASM_ACPI_TABLE_H__ */
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@ -86,6 +86,7 @@ obj-y += psci-dt.o
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obj-$(CONFIG_DEBUG_LL) += debug.o
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obj-$(CONFIG_BLOBLIST) += xferlist.o
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obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
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# For EABI conformant tool chains, provide eabi_compat()
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ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
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114
arch/arm/lib/acpi_table.c
Normal file
114
arch/arm/lib/acpi_table.c
Normal file
@ -0,0 +1,114 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Based on acpi.c from coreboot
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*
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* Copyright (C) 2024 9elements GmbH
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*/
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#define LOG_CATEGORY LOGC_ACPI
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#include <string.h>
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#include <acpi/acpigen.h>
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#include <acpi/acpi_device.h>
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#include <acpi/acpi_table.h>
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void acpi_write_madt_gicc(struct acpi_madt_gicc *gicc, uint cpu_num,
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uint perf_gsiv, ulong phys_base, ulong gicv,
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ulong gich, uint vgic_maint_irq, u64 gicr_base,
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ulong mpidr, uint efficiency)
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{
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memset(gicc, '\0', sizeof(struct acpi_madt_gicc));
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gicc->type = ACPI_APIC_GICC;
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gicc->length = sizeof(struct acpi_madt_gicc);
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gicc->cpu_if_num = cpu_num;
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gicc->processor_id = cpu_num;
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gicc->flags = ACPI_MADTF_ENABLED;
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gicc->perf_gsiv = perf_gsiv;
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gicc->phys_base = phys_base;
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gicc->gicv = gicv;
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gicc->gich = gich;
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gicc->vgic_maint_irq = vgic_maint_irq;
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gicc->gicr_base = gicr_base;
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gicc->mpidr = mpidr;
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gicc->efficiency = efficiency;
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}
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void acpi_write_madt_gicd(struct acpi_madt_gicd *gicd, uint gic_id,
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ulong phys_base, uint gic_version)
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{
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memset(gicd, '\0', sizeof(struct acpi_madt_gicd));
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gicd->type = ACPI_APIC_GICD;
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gicd->length = sizeof(struct acpi_madt_gicd);
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gicd->gic_id = gic_id;
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gicd->phys_base = phys_base;
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gicd->gic_version = gic_version;
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}
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void acpi_write_madt_gicr(struct acpi_madt_gicr *gicr,
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u64 discovery_range_base_address,
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u32 discovery_range_length)
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{
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memset(gicr, '\0', sizeof(struct acpi_madt_gicr));
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gicr->type = ACPI_APIC_GICR;
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gicr->length = sizeof(struct acpi_madt_gicr);
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gicr->discovery_range_base_address = discovery_range_base_address;
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gicr->discovery_range_length = discovery_range_length;
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}
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void acpi_write_madt_its(struct acpi_madt_its *its,
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u32 its_id,
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u64 physical_base_address)
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{
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memset(its, '\0', sizeof(struct acpi_madt_its));
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its->type = ACPI_APIC_ITS;
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its->length = sizeof(struct acpi_madt_its);
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its->gic_its_id = its_id;
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its->physical_base_address = physical_base_address;
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}
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int acpi_pptt_add_proc(struct acpi_ctx *ctx, const u32 flags, const u32 parent,
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const u32 proc_id, const u32 num_resources,
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const u32 *resource_list)
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{
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struct acpi_pptt_proc *proc = ctx->current;
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int offset;
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offset = ctx->current - ctx->tab_start;
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proc->hdr.type = ACPI_PPTT_TYPE_PROC;
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proc->flags = flags;
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proc->parent = parent;
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proc->proc_id = proc_id;
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proc->num_resources = num_resources;
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proc->hdr.length = sizeof(struct acpi_pptt_proc) +
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sizeof(u32) * num_resources;
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if (resource_list)
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memcpy(proc + 1, resource_list, sizeof(u32) * num_resources);
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acpi_inc(ctx, proc->hdr.length);
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return offset;
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}
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int acpi_pptt_add_cache(struct acpi_ctx *ctx, const u32 flags,
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const u32 next_cache_level, const u32 size,
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const u32 sets, const u8 assoc, const u8 attributes,
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const u16 line_size)
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{
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struct acpi_pptt_cache *cache = ctx->current;
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int offset;
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offset = ctx->current - ctx->tab_start;
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cache->hdr.type = ACPI_PPTT_TYPE_CACHE;
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cache->hdr.length = sizeof(struct acpi_pptt_cache);
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cache->flags = flags;
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cache->next_cache_level = next_cache_level;
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cache->size = size;
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cache->sets = sets;
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cache->assoc = assoc;
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cache->attributes = attributes;
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cache->line_size = line_size;
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acpi_inc(ctx, cache->hdr.length);
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return offset;
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}
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@ -342,7 +342,10 @@ enum acpi_apic_types {
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ACPI_APIC_LX2APIC, /* Processor local x2APIC */
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ACPI_APIC_LX2APIC_NMI, /* Local x2APIC NMI */
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ACPI_APIC_GICC, /* Generic Interrupt Ctlr CPU i/f */
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ACPI_APIC_GICD /* Generic Interrupt Ctlr Distributor */
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ACPI_APIC_GICD, /* Generic Interrupt Ctlr Distributor */
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ACPI_APIC_MSI_FRAME, /* Generic Interrupt MSI Frame */
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ACPI_APIC_GICR, /* Generic Interrupt Ctlr Redistributor */
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ACPI_APIC_ITS, /* Interrupt Translation Service */
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};
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/* MADT: Processor Local APIC Structure */
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@ -437,6 +440,35 @@ struct acpi_madt_gicd {
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u8 reserved3[3];
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} __packed;
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/**
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* struct __packed acpi_madt_gicr - GIC Redistributor (type 0xe)
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*
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* This holds information about the Generic Interrupt Controller (GIC)
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* Redistributor interface. See ACPI Spec v6.3 section 5.2.12.17
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*/
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struct acpi_madt_gicr {
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u8 type;
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u8 length;
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u16 reserved;
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u64 discovery_range_base_address;
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u32 discovery_range_length;
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} __packed;
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/**
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* struct __packed acpi_madt_its - GIC Interrupt Translation Service (type 0xf)
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*
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* This holds information about the Interrupt Translation Service (ITS)
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* Structure. See ACPI Spec v6.3 section 5.2.12.18
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*/
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struct acpi_madt_its {
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u8 type;
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u8 length;
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u16 reserved;
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u32 gic_its_id;
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u64 physical_base_address;
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u32 reserved2;
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} __packed;
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/* MCFG (PCI Express MMIO config space BAR description table) */
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struct acpi_mcfg {
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struct acpi_table_header header;
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