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 --- Changelog v2: - Add full comments to exported functions
--- arch/arm/include/asm/acpi_table.h | 115 ++++++++++++++++++++++++++++++ arch/arm/lib/Makefile | 1 + arch/arm/lib/acpi_table.c | 114 +++++++++++++++++++++++++++++ include/acpi/acpi_table.h | 34 ++++++++- 4 files changed, 263 insertions(+), 1 deletion(-) create mode 100644 arch/arm/lib/acpi_table.c
diff --git a/arch/arm/include/asm/acpi_table.h b/arch/arm/include/asm/acpi_table.h index e69de29bb2..c65eabe837 100644 --- a/arch/arm/include/asm/acpi_table.h +++ b/arch/arm/include/asm/acpi_table.h @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef __ASM_ACPI_TABLE_H__ +#define __ASM_ACPI_TABLE_H__ + +#ifndef __ACPI__ + +#include <acpi/acpi_table.h> + +/** + * acpi_write_madt_gicc() - Write out a MADT GICC sub-table + * + * Write out the GIC CPU Interface sub-table. + * + * @gicc: Pointer to place to put the sub-table + * @cpu_num: GIC's CPU Interface Number + * @perf_gsiv: The GSIV used for Performance Monitoring Interrupts + * @phys_base: Address at which the processor can access this + * GIC CPU Interface + * @gicv: Address of the GIC virtual CPU interface registers + * @gich: Address of the GIC virtual interface control block + * registers + * @vgic_maint_irq: GSIV for Virtual GIC maintenance interrupt + * @gicr_base: Physical address of the associated Redistributor + * @mpidr: MPIDR as defined by ARM architecture + * @efficiency: Describes the relative power efficiency + */ +void acpi_write_madt_gicc(struct acpi_madt_gicc *gicc, uint cpu_num, + uint perf_gsiv, ulong phys_base, ulong gicv, + ulong gich, uint vgic_maint_irq, u64 gicr_base, + ulong mpidr, uint efficiency); + +/** + * acpi_write_madt_gicd() - Write out a MADT GICD sub-table + * + * Write out the GIC Distributor sub-table. + * + * @gicd: Pointer to place to put the sub-table + * @gic_id: This GIC Distributor's hardware ID + * @phys_base: The 64-bit physical address for this Distributor + * @gic_version: GIC version + */ +void acpi_write_madt_gicd(struct acpi_madt_gicd *gicd, uint gic_id, + ulong phys_base, uint gic_version); + +/** + * acpi_write_madt_gicr() - Write out a MADT GICR sub-table + * + * Write out the GIC Redistributor sub-table. + * + * @gicr: Pointer to place to put the sub-table + * @discovery_range_base_address: Physical address of a page range + * containing all GIC Redistributors + * @discovery_range_length: Length of the GIC Redistributor + * Discovery page range + */ +void acpi_write_madt_gicr(struct acpi_madt_gicr *gicr, + u64 discovery_range_base_address, + u32 discovery_range_length); + +/** + * acpi_write_madt_its() - Write out a MADT ITS sub-table + * + * Write out the GIC Interrupt Translation Service sub-table. + * + * @its: Pointer to place to put the sub-table + * @its_id: Uniqueue GIC ITS ID + * @physical_base_address: Physical address for the Interrupt + * Translation Service + */ +void acpi_write_madt_its(struct acpi_madt_its *its, + u32 its_id, + u64 physical_base_address); + +/** + * acpi_pptt_add_proc() - Write out a PPTT processor sub-table + * + * Write out the Processor Properties Topology Table processor sub-table. + * + * @ctx: ACPI context pointer + * @flags: Processor Structure Flags + * @parent: Reference to parent processor + * @proc_id: ACPI processor ID as defined in MADT + * @num_resources: Number of resource structure references + * @resource_list: References to other PPTT structures + * Return: offset from start of PPTT in bytes + */ +int acpi_pptt_add_proc(struct acpi_ctx *ctx, const u32 flags, const u32 parent, + const u32 proc_id, const u32 num_resources, + const u32 *resource_list); + +/** + * acpi_pptt_add_cache() - Write out a PPTT cache sub-table + * + * Write out the Processor Properties Topology Table cache sub-table. + * + * @ctx: ACPI context pointer + * @flags: Cache Structure Flags + * @next_cache_level: Reference to next level of cache + * @size: Size of the cache in bytes + * @sets: Number of sets in the cache + * @assoc: Integer number of ways + * @attributes: Allocation type, Cache type, policy + * @line_size: Line size in bytes + * Return: offset from start of PPTT in bytes + */ +int acpi_pptt_add_cache(struct acpi_ctx *ctx, const u32 flags, + const u32 next_cache_level, const u32 size, + const u32 sets, const u8 assoc, const u8 attributes, + const u16 line_size); + +#endif /* !__ASSEMBLY__ */ +#endif /* !__ACPI__ */ + +#endif /* __ASM_ACPI_TABLE_H__ */ diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 67275fba61..a7efed6771 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -86,6 +86,7 @@ obj-y += psci-dt.o obj-$(CONFIG_DEBUG_LL) += debug.o
obj-$(CONFIG_BLOBLIST) += xferlist.o +obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
# For EABI conformant tool chains, provide eabi_compat() ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) diff --git a/arch/arm/lib/acpi_table.c b/arch/arm/lib/acpi_table.c new file mode 100644 index 0000000000..db6e40bdef --- /dev/null +++ b/arch/arm/lib/acpi_table.c @@ -0,0 +1,114 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Based on acpi.c from coreboot + * + * Copyright (C) 2024 9elements GmbH + */ + +#define LOG_CATEGORY LOGC_ACPI + +#include <acpi/acpigen.h> +#include <acpi/acpi_device.h> +#include <acpi/acpi_table.h> +#include <string.h> + +void acpi_write_madt_gicc(struct acpi_madt_gicc *gicc, uint cpu_num, + uint perf_gsiv, ulong phys_base, ulong gicv, + ulong gich, uint vgic_maint_irq, u64 gicr_base, + ulong mpidr, uint efficiency) +{ + memset(gicc, '\0', sizeof(struct acpi_madt_gicc)); + gicc->type = ACPI_APIC_GICC; + gicc->length = sizeof(struct acpi_madt_gicc); + gicc->cpu_if_num = cpu_num; + gicc->processor_id = cpu_num; + gicc->flags = ACPI_MADTF_ENABLED; + gicc->perf_gsiv = perf_gsiv; + gicc->phys_base = phys_base; + gicc->gicv = gicv; + gicc->gich = gich; + gicc->vgic_maint_irq = vgic_maint_irq; + gicc->gicr_base = gicr_base; + gicc->mpidr = mpidr; + gicc->efficiency = efficiency; +} + +void acpi_write_madt_gicd(struct acpi_madt_gicd *gicd, uint gic_id, + ulong phys_base, uint gic_version) +{ + memset(gicd, '\0', sizeof(struct acpi_madt_gicd)); + gicd->type = ACPI_APIC_GICD; + gicd->length = sizeof(struct acpi_madt_gicd); + gicd->gic_id = gic_id; + gicd->phys_base = phys_base; + gicd->gic_version = gic_version; +} + +void acpi_write_madt_gicr(struct acpi_madt_gicr *gicr, + u64 discovery_range_base_address, + u32 discovery_range_length) +{ + memset(gicr, '\0', sizeof(struct acpi_madt_gicr)); + gicr->type = ACPI_APIC_GICR; + gicr->length = sizeof(struct acpi_madt_gicr); + gicr->discovery_range_base_address = discovery_range_base_address; + gicr->discovery_range_length = discovery_range_length; +} + +void acpi_write_madt_its(struct acpi_madt_its *its, + u32 its_id, + u64 physical_base_address) +{ + memset(its, '\0', sizeof(struct acpi_madt_its)); + its->type = ACPI_APIC_ITS; + its->length = sizeof(struct acpi_madt_its); + its->gic_its_id = its_id; + its->physical_base_address = physical_base_address; +} + +int acpi_pptt_add_proc(struct acpi_ctx *ctx, const u32 flags, const u32 parent, + const u32 proc_id, const u32 num_resources, + const u32 *resource_list) +{ + struct acpi_pptt_proc *proc = ctx->current; + int offset; + + offset = ctx->current - ctx->tab_start; + proc->hdr.type = ACPI_PPTT_TYPE_PROC; + proc->flags = flags; + proc->parent = parent; + proc->proc_id = proc_id; + proc->num_resources = num_resources; + proc->hdr.length = sizeof(struct acpi_pptt_proc) + + sizeof(u32) * num_resources; + + if (resource_list) + memcpy(proc + 1, resource_list, sizeof(u32) * num_resources); + + acpi_inc(ctx, proc->hdr.length); + + return offset; +} + +int acpi_pptt_add_cache(struct acpi_ctx *ctx, const u32 flags, + const u32 next_cache_level, const u32 size, + const u32 sets, const u8 assoc, const u8 attributes, + const u16 line_size) +{ + struct acpi_pptt_cache *cache = ctx->current; + int offset; + + offset = ctx->current - ctx->tab_start; + cache->hdr.type = ACPI_PPTT_TYPE_CACHE; + cache->hdr.length = sizeof(struct acpi_pptt_cache); + cache->flags = flags; + cache->next_cache_level = next_cache_level; + cache->size = size; + cache->sets = sets; + cache->assoc = assoc; + cache->attributes = attributes; + cache->line_size = line_size; + acpi_inc(ctx, cache->hdr.length); + + return offset; +} diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h index c6a3e44a95..7d994a985f 100644 --- a/include/acpi/acpi_table.h +++ b/include/acpi/acpi_table.h @@ -342,7 +342,10 @@ enum acpi_apic_types { ACPI_APIC_LX2APIC, /* Processor local x2APIC */ ACPI_APIC_LX2APIC_NMI, /* Local x2APIC NMI */ ACPI_APIC_GICC, /* Generic Interrupt Ctlr CPU i/f */ - ACPI_APIC_GICD /* Generic Interrupt Ctlr Distributor */ + ACPI_APIC_GICD, /* Generic Interrupt Ctlr Distributor */ + ACPI_APIC_MSI_FRAME, /* Generic Interrupt MSI Frame */ + ACPI_APIC_GICR, /* Generic Interrupt Ctlr Redistributor */ + ACPI_APIC_ITS, /* Interrupt Translation Service */ };
/* MADT: Processor Local APIC Structure */ @@ -437,6 +440,35 @@ struct acpi_madt_gicd { u8 reserved3[3]; } __packed;
+/** + * struct __packed acpi_madt_gicr - GIC Redistributor (type 0xe) + * + * This holds information about the Generic Interrupt Controller (GIC) + * Redistributor interface. See ACPI Spec v6.3 section 5.2.12.17 + */ +struct acpi_madt_gicr { + u8 type; + u8 length; + u16 reserved; + u64 discovery_range_base_address; + u32 discovery_range_length; +} __packed; + +/** + * struct __packed acpi_madt_its - GIC Interrupt Translation Service (type 0xf) + * + * This holds information about the Interrupt Translation Service (ITS) + * Structure. See ACPI Spec v6.3 section 5.2.12.18 + */ +struct acpi_madt_its { + u8 type; + u8 length; + u16 reserved; + u32 gic_its_id; + u64 physical_base_address; + u32 reserved2; +} __packed; + /* MCFG (PCI Express MMIO config space BAR description table) */ struct acpi_mcfg { struct acpi_table_header header;