x86: acpi: Add common Intel ACPI tables

Add various tables that are common to Intel CPUs. These functions can be
used by arch-specific CPU code.

Signed-off-by: Simon Glass <sjg@chromium.org>

3 files changed, 81 insertions, 0 deletions

diff --git a/arch/x86/include/asm/acpi_table.h b/arch/x86/include/asm/acpi_table.h
index 1b7ff50951..3245e44781 100644
--- a/arch/x86/include/asm/acpi_table.h
+++ b/arch/x86/include/asm/acpi_table.h
@@ -76,4 +76,26 @@ ulong write_acpi_tables(ulong start);
  */
 ulong acpi_get_rsdp_addr(void);
 
+/**
+ * arch_read_sci_irq_select() - Read the system-control interrupt number
+ *
+ * @returns value of IRQ register in the PMC
+ */
+int arch_read_sci_irq_select(void);
+
+/**
+ * arch_write_sci_irq_select() - Set the system-control interrupt number
+ *
+ * @scis: New value for IRQ register in the PMC
+ */
+int arch_write_sci_irq_select(uint scis);
+
+/**
+ * arch_madt_sci_irq_polarity() - Return the priority to use for the MADT
+ *
+ * @sci: System-control interrupt number
+ * @return priority to use (MP_IRQ_POLARITY_...)
+ */
+int arch_madt_sci_irq_polarity(int sci);
+
 #endif /* __ASM_ACPI_TABLE_H__ */
diff --git a/arch/x86/include/asm/cpu_common.h b/arch/x86/include/asm/cpu_common.h
index a7b7112d41..48f56c2aad 100644
--- a/arch/x86/include/asm/cpu_common.h
+++ b/arch/x86/include/asm/cpu_common.h
@@ -177,4 +177,11 @@ int cpu_get_power_max(void);
  */
 int cpu_get_max_turbo_ratio(void);
 
+/**
+ * cpu_get_cores_per_package() - Get the number of CPU cores in each package
+ *
+ * @return number of cores
+ */
+int cpu_get_cores_per_package(void);
+
 #endif
diff --git a/arch/x86/include/asm/intel_acpi.h b/arch/x86/include/asm/intel_acpi.h
new file mode 100644
index 0000000000..a5781f1af4
--- /dev/null
+++ b/arch/x86/include/asm/intel_acpi.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#ifndef __ASM_INTEL_ACPI_H__
+#define __ASM_INTEL_ACPI_H__
+
+struct acpi_cstate;
+struct acpi_ctx;
+struct acpi_tstate;
+struct udevice;
+
+/**
+ * acpi_generate_cpu_header() - Start generating an ACPI CPU entry
+ *
+ * Generates the ACPI information for a CPU. After this, the caller should
+ * generate_p_state_entries(), generate_t_state_entries and then
+ * acpigen_pop_len() to close off this package.
+ *
+ * @ctx: ACPI context pointer
+ * @core_id: CPU core number, as numbered by the SoC
+ * @c_state_map: Information about each C state
+ * @num_cstates: Number of entries in @c_state_map
+ * @return 0 if OK, -ve on error
+ */
+int acpi_generate_cpu_header(struct acpi_ctx *ctx, int core_id,
+			     const struct acpi_cstate *c_state_map,
+			     int num_cstates);
+
+/**
+ * acpi_generate_cpu_package_final() - Write out the CPU PPKG entry
+ *
+ * This writes information about the CPUs in the package
+ *
+ * @ctx: ACPI context pointer
+ * @cores_per_package: Number of CPU cores in each package in the SoC
+ */
+int acpi_generate_cpu_package_final(struct acpi_ctx *ctx,
+				    int cores_per_package);
+
+void generate_p_state_entries(struct acpi_ctx *ctx, int core,
+			      int cores_per_package);
+void generate_t_state_entries(struct acpi_ctx *ctx, int core,
+			      int cores_per_package, struct acpi_tstate *entry,
+			      int nentries);
+int southbridge_inject_dsdt(const struct udevice *dev, struct acpi_ctx *ctx);
+
+int intel_southbridge_write_acpi_tables(const struct udevice *dev,
+					struct acpi_ctx *ctx);
+
+#endif /* __ASM_INTEL_ACPI_H__ */