@@ -84,6 +84,154 @@ static void bios_init_complete(bool success)
bios_ready = true;
}
+/*
+ * parse a string, format:
+ * <ATTR_a>=<lid_id_1>,<ATTR_b>=<lid_id_2>
+ */
+static int find_lid_by_attr_name(char *str, const char *name,
+ char **lid)
+{
+ const char *pp = "=";
+ char *attr, *attr_end;
+ char *p;
+
+ for (p = strtok(str, ","); p != NULL; p = strtok(NULL, ",")) {
+ /* parse now the following string <ATTR>=<lid_id> */
+ attr = p;
+ while ((*pp != *p) && (*p != '\0'))
+ p++;
+
+ attr_end = p;
+ *attr_end = '\0';
+
+ if (!strncmp(attr, name, strlen(name)) &&
+ (strlen(attr) == strlen(name))) {
+ *lid = strdup(++p);
+ return OPAL_SUCCESS;
+ }
+ }
+ prlog(PR_ERR, "%s - lid not found, attr name: %s\n",
+ __func__, name);
+
+ return OPAL_PARAMETER;
+}
+
+/*
+ * Retrieve attribut value from string.
+ *
+ * Ex: string value = "hb_lid_ids"
+ * From STRING table (with string value = "hb_lid_ids") -> string_handle = 60
+ * From ATTR table (with attr name handle = 60) -> attr handle = 8
+ * From ATTR VAL table (with attr handle = 8)
+ * -> CurrentString = ATTR_PERM=81e00663,ATTR_TMP=81e00664, ...
+ * NVRAM=81e0066b,...,pnor.toc=NA"
+ */
+static int find_bios_table_attr_values_by_string(const char *str,
+ char **current_string)
+{
+ const struct pldm_bios_string_table_entry *string_entry;
+ const struct pldm_bios_attr_table_entry *attr_entry;
+ const struct pldm_bios_attr_val_table_entry *val_entry;
+ uint16_t string_handle, attr_handle;
+ struct variable_field currentString;
+
+ if ((!bios_string_table) || (!bios_attr_table))
+ return OPAL_HARDWARE;
+
+ /* decode string table */
+ string_entry = pldm_bios_table_string_find_by_string(
+ bios_string_table, bios_string_length, str);
+ if (!string_entry) {
+ prlog(PR_ERR, "String table entry not found, str: %s\n",
+ str);
+ return OPAL_PARAMETER;
+ }
+
+ /* get the string handle for the entry */
+ string_handle = pldm_bios_table_string_entry_decode_handle(string_entry);
+ prlog(PR_TRACE, "%s - string_handle: %d\n", __func__, string_handle);
+
+ /* decode attribute table */
+ attr_entry = pldm_bios_table_attr_find_by_string_handle(
+ bios_attr_table, bios_attr_length, string_handle);
+ if (!attr_entry) {
+ prlog(PR_ERR, "Attribute table entry not found, string_handle: %d\n",
+ string_handle);
+ return OPAL_PARAMETER;
+ }
+
+ /* get the attribute handle from the attribute table entry */
+ attr_handle = pldm_bios_table_attr_entry_decode_attribute_handle(attr_entry);
+ prlog(PR_TRACE, "%s - attr_handle: %d\n", __func__, attr_handle);
+
+ /* decode attribute value table */
+ val_entry = pldm_bios_table_attr_value_find_by_handle(
+ bios_val_table, bios_val_length, attr_handle);
+
+ if (!val_entry) {
+ prlog(PR_ERR, "Attribute val table entry not found, attr_handle: %d\n",
+ attr_handle);
+ return OPAL_PARAMETER;
+ }
+
+ /* get Current String Itself */
+ pldm_bios_table_attr_value_entry_string_decode_string(
+ val_entry,
+ ¤tString);
+ *current_string = strdup(currentString.ptr);
+
+ return OPAL_SUCCESS;
+}
+
+#define HB_LID_IDS "hb_lid_ids"
+
+/*
+ * Find lid attribute from bios tables
+ */
+int pldm_bios_find_lid_by_attr_name(const char *name, char **lid)
+{
+ char *hb_lid_ids_string = NULL;
+ int rc = OPAL_SUCCESS;
+
+ if (!bios_ready)
+ return OPAL_HARDWARE;
+
+ /* find current attribut string */
+ rc = find_bios_table_attr_values_by_string(HB_LID_IDS, &hb_lid_ids_string);
+ if (rc)
+ goto err;
+
+ /* find lid attribut from current string */
+ rc = find_lid_by_attr_name(hb_lid_ids_string, name, lid);
+ if (rc)
+ goto err;
+
+ free(hb_lid_ids_string);
+
+ prlog(PR_DEBUG, "%s - lid: %s, attr name: %s\n",
+ __func__, *lid, name);
+
+ return OPAL_SUCCESS;
+
+err:
+ if (hb_lid_ids_string)
+ free(hb_lid_ids_string);
+
+ return rc;
+}
+
+/*
+ * Get lid ids string from bios tables
+ */
+int pldm_bios_get_lids_id(char **lid_ids_string)
+{
+ if (!bios_ready)
+ return OPAL_HARDWARE;
+
+ /* find current attribut string */
+ return find_bios_table_attr_values_by_string(HB_LID_IDS, lid_ids_string);
+}
+
/*
* Send/receive a PLDM GetBIOSTable request message
*/
@@ -7,6 +7,7 @@
#include <ast.h>
#include <base.h>
+#include <utils.h>
#include <pldm.h>
#define PLDM_MSG_SIZE(x) (sizeof(struct pldm_msg_hdr) + sizeof(x))
@@ -51,6 +52,8 @@ int pldm_responder_handle_request(struct pldm_rx_data *rx);
int pldm_responder_init(void);
/* Requester support */
+int pldm_bios_find_lid_by_attr_name(const char *name, char **lid);
+int pldm_bios_get_lids_id(char **lid_ids_string);
int pldm_bios_init(void);
uint8_t pldm_base_get_bmc_tid(void);