diff options
-rw-r--r-- | core/pldm/Makefile.inc | 1 | ||||
-rw-r--r-- | core/pldm/pldm-bios-requests.c | 222 | ||||
-rw-r--r-- | core/pldm/pldm-mctp.c | 4 | ||||
-rw-r--r-- | core/pldm/pldm.h | 2 |
4 files changed, 228 insertions, 1 deletions
diff --git a/core/pldm/Makefile.inc b/core/pldm/Makefile.inc index 933b0c6..e4135ac 100644 --- a/core/pldm/Makefile.inc +++ b/core/pldm/Makefile.inc @@ -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)/%) diff --git a/core/pldm/pldm-bios-requests.c b/core/pldm/pldm-bios-requests.c new file mode 100644 index 0000000..0fa198a --- /dev/null +++ b/core/pldm/pldm-bios-requests.c @@ -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; +} diff --git a/core/pldm/pldm-mctp.c b/core/pldm/pldm-mctp.c index a07d950..6003b66 100644 --- a/core/pldm/pldm-mctp.c +++ b/core/pldm/pldm-mctp.c @@ -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__); diff --git a/core/pldm/pldm.h b/core/pldm/pldm.h index fd79597..3f46590 100644 --- a/core/pldm/pldm.h +++ b/core/pldm/pldm.h @@ -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); |