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>
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 67275fb..a7efed6 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -86,6 +86,7 @@
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 0000000..286ed7c
--- /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 <string.h>
+#include <acpi/acpigen.h>
+#include <acpi/acpi_device.h>
+#include <acpi/acpi_table.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;
+}