Add generic ACPI code to generate
- MADT GICC
- MADT GICD
as commonly used on arm platforms.
Signed-off-by: Patrick Rudolph <patrick.rudo...@9elements.com>
Cc: Tom Rini <tr...@konsulko.com>
Cc: Simon Glass <s...@chromium.org>
---
arch/arm/include/asm/acpi_table.h | 18 +++++++++++++
arch/arm/lib/Makefile | 1 +
arch/arm/lib/acpi_table.c | 44 +++++++++++++++++++++++++++++++
3 files changed, 63 insertions(+)
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..8a25e93847 100644
--- a/arch/arm/include/asm/acpi_table.h
+++ b/arch/arm/include/asm/acpi_table.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __ASM_ACPI_TABLE_H__
+#define __ASM_ACPI_TABLE_H__
+
+#ifndef __ACPI__
+
+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, ulong mpidr,
+ uint efficiency);
+
+void acpi_write_madt_gicd(struct acpi_madt_gicd *gicd, uint gic_id,
+ ulong phys_base, uint gic_version);
+
+#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..ea3a6343c9
--- /dev/null
+++ b/arch/arm/lib/acpi_table.c
@@ -0,0 +1,44 @@
+// 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, 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->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;
+}
--
2.45.2
