This builds the ACPI ERST table to inform OSPM how to communicate
with the acpi-erst device.
Signed-off-by: Eric DeVolder <eric.devol...@oracle.com>
---
hw/acpi/erst.c | 188 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 188 insertions(+)
diff --git a/hw/acpi/erst.c b/hw/acpi/erst.c
index bb6cad4..05177b3 100644
--- a/hw/acpi/erst.c
+++ b/hw/acpi/erst.c
@@ -59,6 +59,27 @@
#define STATUS_RECORD_STORE_EMPTY 0x04
#define STATUS_RECORD_NOT_FOUND 0x05
+/* ACPI 4.0: Table 17-19 Serialization Instructions */
+#define INST_READ_REGISTER 0x00
+#define INST_READ_REGISTER_VALUE 0x01
+#define INST_WRITE_REGISTER 0x02
+#define INST_WRITE_REGISTER_VALUE 0x03
+#define INST_NOOP 0x04
+#define INST_LOAD_VAR1 0x05
+#define INST_LOAD_VAR2 0x06
+#define INST_STORE_VAR1 0x07
+#define INST_ADD 0x08
+#define INST_SUBTRACT 0x09
+#define INST_ADD_VALUE 0x0A
+#define INST_SUBTRACT_VALUE 0x0B
+#define INST_STALL 0x0C
+#define INST_STALL_WHILE_TRUE 0x0D
+#define INST_SKIP_NEXT_INSTRUCTION_IF_TRUE 0x0E
+#define INST_GOTO 0x0F
+#define INST_SET_SRC_ADDRESS_BASE 0x10
+#define INST_SET_DST_ADDRESS_BASE 0x11
+#define INST_MOVE_DATA 0x12
+
/* UEFI 2.1: Appendix N Common Platform Error Record */
#define UEFI_CPER_RECORD_MIN_SIZE 128U
#define UEFI_CPER_RECORD_LENGTH_OFFSET 20U
@@ -172,6 +193,173 @@ typedef struct {
/*******************************************************************/
/*******************************************************************/
+
+/* ACPI 4.0: 17.4.1.2 Serialization Instruction Entries */
+static void build_serialization_instruction_entry(GArray *table_data,
+ uint8_t serialization_action,
+ uint8_t instruction,
+ uint8_t flags,
+ uint8_t register_bit_width,
+ uint64_t register_address,
+ uint64_t value)
+{
+ /* ACPI 4.0: Table 17-18 Serialization Instruction Entry */
+ struct AcpiGenericAddress gas;
+ uint64_t mask;
+
+ /* Serialization Action */
+ build_append_int_noprefix(table_data, serialization_action, 1);
+ /* Instruction */
+ build_append_int_noprefix(table_data, instruction , 1);
+ /* Flags */
+ build_append_int_noprefix(table_data, flags , 1);
+ /* Reserved */
+ build_append_int_noprefix(table_data, 0 , 1);
+ /* Register Region */
+ gas.space_id = AML_SYSTEM_MEMORY;
+ gas.bit_width = register_bit_width;
+ gas.bit_offset = 0;
+ gas.access_width = ctz32(register_bit_width) - 2;
+ gas.address = register_address;
+ build_append_gas_from_struct(table_data, &gas);
+ /* Value */
+ build_append_int_noprefix(table_data, value , 8);
+ /* Mask */
+ mask = (1ULL << (register_bit_width - 1) << 1) - 1;
+ build_append_int_noprefix(table_data, mask , 8);
+}
+
+/* ACPI 4.0: 17.4.1 Serialization Action Table */
+void build_erst(GArray *table_data, BIOSLinker *linker, Object *erst_dev,
+ const char *oem_id, const char *oem_table_id)
+{
+ GArray *table_instruction_data;
+ unsigned action;
+ pcibus_t bar0 = pci_get_bar_addr(PCI_DEVICE(erst_dev), 0);
+ AcpiTable table = { .sig = "ERST", .rev = 1, .oem_id = oem_id,
+ .oem_table_id = oem_table_id };
+
+ trace_acpi_erst_pci_bar_0(bar0);
+
+ /*
+ * Serialization Action Table
+ * The serialization action table must be generated first
+ * so that its size can be known in order to populate the
+ * Instruction Entry Count field.
+ */
+ table_instruction_data = g_array_new(FALSE, FALSE, sizeof(char));
+
+ /*
+ * Macros for use with construction of the action instructions
+ */
+#define build_read_register(action, width_in_bits, reg) \
+ build_serialization_instruction_entry(table_instruction_data, \
+ action, INST_READ_REGISTER, 0, width_in_bits, \
+ bar0 + reg, 0)
+
+#define build_read_register_value(action, width_in_bits, reg, value) \
+ build_serialization_instruction_entry(table_instruction_data, \
+ action, INST_READ_REGISTER_VALUE, 0, width_in_bits, \
+ bar0 + reg, value)
+
+#define build_write_register(action, width_in_bits, reg, value) \
+ build_serialization_instruction_entry(table_instruction_data, \
+ action, INST_WRITE_REGISTER, 0, width_in_bits, \
+ bar0 + reg, value)
+
+#define build_write_register_value(action, width_in_bits, reg, value) \
+ build_serialization_instruction_entry(table_instruction_data, \
+ action, INST_WRITE_REGISTER_VALUE, 0, width_in_bits, \
+ bar0 + reg, value)
+
+ /* Serialization Instruction Entries */
+ action = ACTION_BEGIN_WRITE_OPERATION;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_BEGIN_READ_OPERATION;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_BEGIN_CLEAR_OPERATION;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_END_OPERATION;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_SET_RECORD_OFFSET;
+ build_write_register(action, 32, ERST_VALUE_OFFSET, 0);
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_EXECUTE_OPERATION;
+ build_write_register_value(action, 32, ERST_VALUE_OFFSET,
+ ERST_EXECUTE_OPERATION_MAGIC);
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_CHECK_BUSY_STATUS;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register_value(action, 32, ERST_VALUE_OFFSET, 0x01);
+
+ action = ACTION_GET_COMMAND_STATUS;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register(action, 32, ERST_VALUE_OFFSET);
+
+ action = ACTION_GET_RECORD_IDENTIFIER;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register(action, 64, ERST_VALUE_OFFSET);
+
+ action = ACTION_SET_RECORD_IDENTIFIER;
+ build_write_register(action, 64, ERST_VALUE_OFFSET, 0);
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_GET_RECORD_COUNT;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register(action, 32, ERST_VALUE_OFFSET);
+
+ action = ACTION_BEGIN_DUMMY_WRITE_OPERATION;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+
+ action = ACTION_GET_ERROR_LOG_ADDRESS_RANGE;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register(action, 64, ERST_VALUE_OFFSET);
+
+ action = ACTION_GET_ERROR_LOG_ADDRESS_LENGTH;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register(action, 64, ERST_VALUE_OFFSET);
+
+ action = ACTION_GET_ERROR_LOG_ADDRESS_RANGE_ATTRIBUTES;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register(action, 32, ERST_VALUE_OFFSET);
+
+ action = ACTION_GET_EXECUTE_OPERATION_TIMINGS;
+ build_write_register_value(action, 32, ERST_ACTION_OFFSET, action);
+ build_read_register(action, 64, ERST_VALUE_OFFSET);
+
+ /* Serialization Header */
+ acpi_table_begin(&table, table_data);
+
+ /* Serialization Header Size */
+ build_append_int_noprefix(table_data, 48, 4);
+
+ /* Reserved */
+ build_append_int_noprefix(table_data, 0, 4);
+
+ /*
+ * Instruction Entry Count
+ * Each instruction entry is 32 bytes
+ */
+ g_assert((table_instruction_data->len) % 32 == 0);
+ build_append_int_noprefix(table_data,
+ (table_instruction_data->len / 32), 4);
+
+ /* Serialization Instruction Entries */
+ g_array_append_vals(table_data, table_instruction_data->data,
+ table_instruction_data->len);
+ g_array_free(table_instruction_data, TRUE);
+
+ acpi_table_end(linker, &table);
+}
+
+/*******************************************************************/
+/*******************************************************************/
static uint8_t *get_nvram_ptr_by_index(ERSTDeviceState *s, unsigned index)
{
uint8_t *rc = NULL;
--
1.8.3.1
