@@ -9,6 +9,7 @@ CPPFLAGS += -I$(SRC)/pldm/include/libpldm/oem/ibm/
PLDM_OBJS = pldm-mctp.o pldm-responder.o pldm-requester.o
PLDM_OBJS += pldm-base-requests.o pldm-platform-requests.o
+PLDM_OBJS += pldm-bios-requests.o
PLDM = $(PLDM_DIR)/built-in.a
$(PLDM): $(PLDM_OBJS:%=$(PLDM_DIR)/%)
new file mode 100644
@@ -0,0 +1,222 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+// Copyright 2022 IBM Corp.
+
+#define pr_fmt(fmt) "PLDM: " fmt
+
+#include <opal.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <libpldm/bios.h>
+#include <libpldm/bios_table.h>
+#include "pldm.h"
+
+/*
+ * PLDM_BIOS_STRING_TABLE = 0
+ * pldmtool bios GetBIOSTable -t 0
+ * pldmtool: Tx: 08 01 80 03 01 00 00 00 00 01 00
+ * ...
+ * "60": "hb_lid_ids",
+ * ...
+ */
+static void *bios_string_table;
+static size_t bios_string_length;
+
+/*
+ * PLDM_BIOS_ATTR_TABLE = 1
+ * pldmtool bios GetBIOSTable -t 1
+ * pldmtool: Tx: 08 01 80 03 01 00 00 00 00 01 01
+ *
+ * {
+ * "AttributeHandle": 8,
+ * "AttributeNameHandle": "60(hb_lid_ids)",
+ * "AttributeType": "BIOSString",
+ * "StringType": "0x01",
+ * "MinimumStringLength": 0,
+ * "MaximumStringLength": 1024,
+ * "DefaultStringLength": 0,
+ * "DefaultString": ""
+ * },
+ */
+static void *bios_attr_table;
+static size_t bios_attr_length;
+
+/*
+ * PLDM_BIOS_ATTR_VAL_TABLE = 2
+ * pldmtool bios GetBIOSTable -t 2
+ * pldmtool: Tx: 08 01 80 03 01 00 00 00 00 01 02
+ *
+ * {
+ * "AttributeHandle": 8,
+ * "AttributeType": "BIOSString",
+ * "CurrentStringLength": 616,
+ * "CurrentString": "ATTR_PERM=81e00663,ATTR_TMP=81e00664, ...
+ * NVRAM=81e0066b,...,pnor.toc=NA"
+ * }, ...
+ */
+static void *bios_val_table;
+static size_t bios_val_length;
+
+static bool bios_ready;
+
+static void bios_init_complete(bool success)
+{
+ /* Read not successful, error out and free the buffer */
+ if (!success) {
+ bios_ready = false;
+
+ if (bios_string_table != NULL) {
+ free(bios_string_table);
+ bios_string_length = 0;
+ }
+ if (bios_attr_table != NULL) {
+ free(bios_attr_table);
+ bios_attr_length = 0;
+ }
+ if (bios_val_table != NULL) {
+ free(bios_val_table);
+ bios_val_length = 0;
+ }
+ return;
+ }
+
+ /* Mark ready */
+ bios_ready = true;
+}
+
+/*
+ * Send/receive a PLDM GetBIOSTable request message
+ */
+static int get_bios_table_req(enum pldm_bios_table_types table_type,
+ void **bios_table, size_t *bios_length)
+{
+ size_t data_size = PLDM_MSG_SIZE(struct pldm_get_bios_table_req);
+ size_t response_len, payload_len, bios_table_offset;
+ uint8_t completion_code, transfer_flag;
+ struct pldm_tx_data *tx = NULL;
+ uint32_t next_transfer_handle;
+ int rc = OPAL_SUCCESS;
+ void *response_msg;
+
+ struct pldm_get_bios_table_req bios_table_req = {
+ .transfer_handle = 0, /* (0 if transfer op is FIRSTPART) */
+ .transfer_op_flag = PLDM_GET_FIRSTPART,
+ .table_type = table_type
+ };
+
+ prlog(PR_DEBUG, "%s - table type: %d\n", __func__, table_type);
+
+ /* Encode the bios table request */
+ tx = zalloc(sizeof(struct pldm_tx_data) + data_size);
+ if (!tx)
+ return OPAL_NO_MEM;
+ tx->data_size = data_size;
+
+ rc = encode_get_bios_table_req(
+ DEFAULT_INSTANCE_ID,
+ bios_table_req.transfer_handle,
+ bios_table_req.transfer_op_flag,
+ bios_table_req.table_type,
+ (struct pldm_msg *)tx->data);
+ if (rc != PLDM_SUCCESS) {
+ prlog(PR_ERR, "Encode GetBIOSTableReq Error, type: %d, rc: %d\n",
+ table_type, rc);
+ free(tx);
+ return OPAL_PARAMETER;
+ }
+
+ /* Send and get the response message bytes */
+ rc = pldm_requester_queue_and_wait(tx, &response_msg, &response_len);
+ if (rc) {
+ prlog(PR_ERR, "Communication Error, req: GetBIOSTableReq, rc: %d\n", rc);
+ free(tx);
+ return rc;
+ }
+
+ /* Decode the message */
+ payload_len = response_len - sizeof(struct pldm_msg_hdr);
+ rc = decode_get_bios_table_resp(
+ response_msg,
+ payload_len,
+ &completion_code,
+ &next_transfer_handle,
+ &transfer_flag,
+ &bios_table_offset);
+ if (rc != PLDM_SUCCESS || completion_code != PLDM_SUCCESS) {
+ prlog(PR_ERR, "Decode GetBIOSTableResp Error, rc: %d, cc: %d\n",
+ rc, completion_code);
+ rc = OPAL_PARAMETER;
+ goto out;
+ }
+
+ /* we do not support multipart transfer */
+ if ((next_transfer_handle != PLDM_GET_NEXTPART) ||
+ (transfer_flag != PLDM_START_AND_END)) {
+ prlog(PR_ERR, "Transfert GetBIOSTable not complete "
+ "transfer_hndl: %d, transfer_flag: %d\n",
+ next_transfer_handle,
+ transfer_flag);
+ }
+
+ *bios_length = payload_len - bios_table_offset;
+ *bios_table = zalloc(*bios_length);
+ if (!bios_table) {
+ prlog(PR_ERR, "failed to allocate bios table (size: 0x%lx)\n",
+ *bios_length);
+ rc = OPAL_NO_MEM;
+ goto out;
+ }
+
+ memcpy(*bios_table,
+ ((struct pldm_msg *)response_msg)->payload + bios_table_offset,
+ *bios_length);
+
+out:
+ free(tx);
+ free(response_msg);
+ return rc;
+}
+
+int pldm_bios_init(void)
+{
+ int rc;
+
+ /* BIOS String Table is a BIOS table that contains all the BIOS
+ * strings including attribute names, and pre-configured strings
+ * used in representing the values of the attributes.
+ * Each string in the BIOS String Table has an associated unique
+ * handle.
+ */
+ rc = get_bios_table_req(PLDM_BIOS_STRING_TABLE,
+ &bios_string_table, &bios_string_length);
+ if (rc)
+ goto err;
+
+ /* BIOS Attribute Table is a BIOS table that contains attribute
+ * name handles, attribute types, type-specific metadata,
+ * type-specific possible values (if any), and default values.
+ */
+ rc = get_bios_table_req(PLDM_BIOS_ATTR_TABLE,
+ &bios_attr_table, &bios_attr_length);
+ if (rc)
+ goto err;
+
+ /* BIOS Attribute Value Table is a BIOS table that contains all
+ * the current values of the BIOS attributes and settings.
+ * Each entry in this table contains the attribute handle, the
+ * attribute type, and current values.
+ */
+ rc = get_bios_table_req(PLDM_BIOS_ATTR_VAL_TABLE,
+ &bios_val_table, &bios_val_length);
+ if (rc)
+ goto err;
+
+ bios_init_complete(true);
+ prlog(PR_DEBUG, "%s - done\n", __func__);
+
+ return OPAL_SUCCESS;
+
+err:
+ bios_init_complete(false);
+ return rc;
+}
@@ -74,7 +74,7 @@ out:
int pldm_mctp_init(void)
{
- int nbr_elt = 5, rc = OPAL_SUCCESS;
+ int nbr_elt = 6, rc = OPAL_SUCCESS;
int (*pldm_config[])(void) = {
ast_mctp_init, /* MCTP Binding */
@@ -82,6 +82,7 @@ int pldm_mctp_init(void)
pldm_requester_init, /* Requester implementation */
pldm_base_get_tid_req, /* Get BMC tid */
pldm_platform_init, /* Get PDRs data */
+ pldm_bios_init, /* Get Bios data */
};
const char *pldm_config_error[] = {
@@ -90,6 +91,7 @@ int pldm_mctp_init(void)
"Failed to configure requister",
"Failed to retrieve BMC Tid",
"Failed to retrieve Data Records",
+ "Failed to retrieve Bios data",
};
prlog(PR_NOTICE, "%s - Getting PLDM data\n", __func__);
@@ -51,6 +51,8 @@ int pldm_responder_handle_request(struct pldm_rx_data *rx);
int pldm_responder_init(void);
/* Requester support */
+int pldm_bios_init(void);
+
uint8_t pldm_base_get_bmc_tid(void);
int pldm_base_get_tid_req(void);