@@ -48,6 +48,7 @@
#define ACPI_SIG_PRMT "PRMT" /* Platform Runtime Mechanism Table */
#define ACPI_SIG_RASF "RASF" /* RAS Feature table */
#define ACPI_SIG_RGRT "RGRT" /* Regulatory Graphics Resource Table */
+#define ACPI_SIG_RHCT "RHCT" /* RISC-V Hart Capabilities Table */
#define ACPI_SIG_SBST "SBST" /* Smart Battery Specification Table */
#define ACPI_SIG_SDEI "SDEI" /* Software Delegated Exception Interface Table */
#define ACPI_SIG_SDEV "SDEV" /* Secure Devices table */
@@ -2720,6 +2721,53 @@ enum acpi_rgrt_image_type {
ACPI_RGRT_TYPE_RESERVED = 2 /* 2 and greater are reserved */
};
+/*******************************************************************************
+ *
+ * RHCT - RISC-V Hart Capabilities Table
+ * Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_rhct {
+ struct acpi_table_header header; /* Common ACPI table header */
+ u32 reserved;
+ u64 time_base_freq;
+ u32 node_count;
+ u32 node_offset;
+};
+
+/*
+ * RHCT subtables
+ */
+struct acpi_rhct_node_header {
+ u16 type;
+ u16 length;
+ u16 revision;
+};
+
+/* Values for RHCT subtable Type above */
+
+enum acpi_rhct_node_type {
+ ACPI_RHCT_NODE_TYPE_ISA_STRING = 0x0000,
+ ACPI_RHCT_NODE_TYPE_HART_INFO = 0xFFFF,
+};
+
+/*
+ * RHCT node specific subtables
+ */
+
+/* ISA string node structure */
+struct acpi_rhct_isa_string {
+ u16 isa_length;
+ char isa[];
+};
+
+/* Hart Info node structure */
+struct acpi_rhct_hart_info {
+ u16 num_offsets;
+ u32 uid; /* ACPI processor UID */
+};
+
/*******************************************************************************
*
* SBST - Smart Battery Specification Table