This patch provides a simplistic FRU support for the IPMI BMC
simulator. The FRU area contains 32 entries * 256 bytes which should
be enough to start some simulation.
Signed-off-by: Cédric Le Goater <address@hidden>
---
hw/ipmi/ipmi_bmc_sim.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 119 insertions(+)
diff --git a/hw/ipmi/ipmi_bmc_sim.c b/hw/ipmi/ipmi_bmc_sim.c
index 5db94491b130..60586a67104e 100644
--- a/hw/ipmi/ipmi_bmc_sim.c
+++ b/hw/ipmi/ipmi_bmc_sim.c
@@ -81,6 +81,9 @@
#define IPMI_CMD_ENTER_SDR_REP_UPD_MODE 0x2A
#define IPMI_CMD_EXIT_SDR_REP_UPD_MODE 0x2B
#define IPMI_CMD_RUN_INIT_AGENT 0x2C
+#define IPMI_CMD_GET_FRU_AREA_INFO 0x10
+#define IPMI_CMD_READ_FRU_DATA 0x11
+#define IPMI_CMD_WRITE_FRU_DATA 0x12
#define IPMI_CMD_GET_SEL_INFO 0x40
#define IPMI_CMD_GET_SEL_ALLOC_INFO 0x41
#define IPMI_CMD_RESERVE_SEL 0x42
@@ -123,6 +126,14 @@ typedef struct IPMISdr {
uint8_t overflow;
} IPMISdr;
+/* theoretically, the offset being 16bits, it should be 65536 */
+#define MAX_FRU_SIZE 256
+#define MAX_FRU_ID 32
+
+typedef struct IPMIFru {
+ uint8_t data[MAX_FRU_SIZE][MAX_FRU_ID];
+} IPMIFru;
+
typedef struct IPMISensor {
uint8_t status;
uint8_t reading;
@@ -206,6 +217,7 @@ struct IPMIBmcSim {
IPMISel sel;
IPMISdr sdr;
+ IPMIFru fru;
IPMISensor sensors[MAX_SENSORS];
/* Odd netfns are for responses, so we only need the even ones. */
@@ -1305,6 +1317,110 @@ static void get_sel_info(IPMIBmcSim *ibs,
return;
}
+static void get_fru_area_info(IPMIBmcSim *ibs,
+ uint8_t *cmd, unsigned int cmd_len,
+ uint8_t *rsp, unsigned int *rsp_len,
+ unsigned int max_rsp_len)
+{
+ uint8_t fruid;
+ uint16_t fru_entry_size;
+
+ IPMI_CHECK_CMD_LEN(3);
+
+ fruid = cmd[2];
+
+ if (fruid > MAX_FRU_ID) {
+ rsp[2] = IPMI_CC_INVALID_DATA_FIELD;
+ goto out;
+ }
+
+ fru_entry_size = MAX_FRU_SIZE;
+
+ IPMI_ADD_RSP_DATA(fru_entry_size & 0xff);
+ IPMI_ADD_RSP_DATA(fru_entry_size >> 8 & 0xff);
+ IPMI_ADD_RSP_DATA(0x0);
+out:
+ return;
+}
+
+#define min(x, y) ((x) < (y) ? (x) : (y))
+#define max(x, y) ((x) > (y) ? (x) : (y))
+
+static void read_fru_data(IPMIBmcSim *ibs,
+ uint8_t *cmd, unsigned int cmd_len,
+ uint8_t *rsp, unsigned int *rsp_len,
+ unsigned int max_rsp_len)
+{
+ uint8_t fruid;
+ uint16_t offset;
+ int i;
+ uint8_t *fru_entry;
+ unsigned int count;
+
+ IPMI_CHECK_CMD_LEN(5);
+
+ fruid = cmd[2];
+ offset = (cmd[3] | cmd[4] << 8);
+
+ if (fruid > MAX_FRU_ID) {
+ rsp[2] = IPMI_CC_INVALID_DATA_FIELD;
+ goto out;
+ }
+
+ if (offset >= MAX_FRU_SIZE - 1) {
+ rsp[2] = IPMI_CC_INVALID_DATA_FIELD;
+ goto out;
+ }
+
+ fru_entry = ibs->fru.data[fruid];
+
+ count = min(cmd[5], MAX_FRU_SIZE - offset);
+
+ IPMI_ADD_RSP_DATA(count & 0xff);
+ for (i = 0; i < count; i++) {
+ IPMI_ADD_RSP_DATA(fru_entry[offset + i]);
+ }
+
+ out:
+ return;
+}
+
+static void write_fru_data(IPMIBmcSim *ibs,
+ uint8_t *cmd, unsigned int cmd_len,
+ uint8_t *rsp, unsigned int *rsp_len,
+ unsigned int max_rsp_len)
+{
+ uint8_t fruid;
+ uint16_t offset;
+ uint8_t *fru_entry;
+ unsigned int count;
+
+ IPMI_CHECK_CMD_LEN(5);
+
+ fruid = cmd[2];
+ offset = (cmd[3] | cmd[4] << 8);
+
+ if (fruid > MAX_FRU_ID) {
+ rsp[2] = IPMI_CC_INVALID_DATA_FIELD;
+ goto out;
+ }
+
+ if (offset >= MAX_FRU_SIZE - 1) {
+ rsp[2] = IPMI_CC_INVALID_DATA_FIELD;
+ goto out;
+ }
+
+ fru_entry = ibs->fru.data[fruid];
+
+ count = min(cmd_len - 5, MAX_FRU_SIZE - offset);
+
+ memcpy(fru_entry + offset, cmd + 5, count);
+
+ IPMI_ADD_RSP_DATA(count & 0xff);
+ out:
+ return;
+}
+
static void reserve_sel(IPMIBmcSim *ibs,
uint8_t *cmd, unsigned int cmd_len,
uint8_t *rsp, unsigned int *rsp_len,
@@ -1682,6 +1798,9 @@ static const IPMINetfn app_netfn = {
};
static const IPMICmdHandler storage_cmds[IPMI_NETFN_STORAGE_MAXCMD] = {
+ [IPMI_CMD_GET_FRU_AREA_INFO] = get_fru_area_info,
+ [IPMI_CMD_READ_FRU_DATA] = read_fru_data,
+ [IPMI_CMD_WRITE_FRU_DATA] = write_fru_data,
[IPMI_CMD_GET_SDR_REP_INFO] = get_sdr_rep_info,
[IPMI_CMD_RESERVE_SDR_REP] = reserve_sdr_rep,
[IPMI_CMD_GET_SDR] = get_sdr,