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| author | Joel Stanley <joel@jms.id.au> | 2015-02-27 16:12:01 +1030 |
|---|---|---|
| committer | Jeremy Kerr <jk@ozlabs.org> | 2015-03-04 16:02:20 +0800 |
| commit | a736f60aaed6bb33047646949df7ab08697a896c (patch) | |
| tree | 8be60781340c7a0d64e4d7f91491f356325ff731 | |
| parent | 573d0a9af9e46afbefc34cf95510f3d91bc778f6 (diff) | |
| download | skiboot-a736f60aaed6bb33047646949df7ab08697a896c.zip skiboot-a736f60aaed6bb33047646949df7ab08697a896c.tar.gz skiboot-a736f60aaed6bb33047646949df7ab08697a896c.tar.bz2 | |
hw/ipmi: Set boot count sensor
The boot count sensor is a discrete sensor that is set once the system
is up and running.
On successful boot, the BMC expects the sensor to be set to 2.
Signed-off-by: Joel Stanley <joel@jms.id.au>
| -rw-r--r-- | core/ipmi.c | 9 | ||||
| -rw-r--r-- | hw/ipmi/ipmi-sensor.c | 30 | ||||
| -rw-r--r-- | include/ipmi.h | 3 |
3 files changed, 36 insertions, 6 deletions
diff --git a/core/ipmi.c b/core/ipmi.c index 6c1179f..78a54de 100644 --- a/core/ipmi.c +++ b/core/ipmi.c @@ -156,9 +156,14 @@ static void ipmi_get_message_flags_complete(struct ipmi_msg *msg) /* Once we see an interrupt we assume the payload has * booted. We disable the wdt and let the OS setup its own - * wdt. */ - if (flags & IPMI_MESSAGE_FLAGS_WATCHDOG_PRE_TIMEOUT) + * wdt. + * + * This is also where we consider the OS to be booted, so we set + * the boot count sensor */ + if (flags & IPMI_MESSAGE_FLAGS_WATCHDOG_PRE_TIMEOUT) { ipmi_wdt_stop(); + ipmi_set_boot_count(); + } /* Message available in the event buffer? Queue a Read Event command * to retrieve it. The flag is cleared by performing a read */ diff --git a/hw/ipmi/ipmi-sensor.c b/hw/ipmi/ipmi-sensor.c index 9b08d30..cdaf5fb 100644 --- a/hw/ipmi/ipmi-sensor.c +++ b/hw/ipmi/ipmi-sensor.c @@ -20,11 +20,12 @@ #include <skiboot.h> #include <string.h> -/* This field controls whether the sensor reading byte is written or left - * unchanged according to the sensor */ -#define IPMI_WRITE_SENSOR 0x01 +#define IPMI_WRITE_SENSOR (1 << 1) +#define IPMI_SET_ASSERTION (1 << 5) +#define IPMI_ASSERTION_STATE(state) (1 << state) -#define FW_PROGRESS_SENSOR 0x0F +#define FW_PROGRESS_SENSOR 0x0F +#define BOOT_COUNT_SENSOR 0xAA /* Ghetto. TODO: Do something smarter */ int16_t sensors[255]; @@ -35,6 +36,27 @@ struct set_sensor_req { u8 reading[8]; }; +int ipmi_set_boot_count(void) +{ + struct set_sensor_req req; + struct ipmi_msg *msg; + + memset(&req, 0, sizeof(req)); + + req.sensor = BOOT_COUNT_SENSOR; + /* Set assertion bit */ + req.operation = IPMI_SET_ASSERTION; + /* Set state 2 */ + req.reading[1] = IPMI_ASSERTION_STATE(2); + + /* We just need the first 4 bytes */ + msg = ipmi_mkmsg_simple(IPMI_SET_SENSOR_READING, &req, 4); + if (!msg) + return OPAL_HARDWARE; + + return ipmi_queue_msg(msg); +} + int ipmi_set_fw_progress_sensor(uint8_t state) { int fw_sensor_id = sensors[FW_PROGRESS_SENSOR]; diff --git a/include/ipmi.h b/include/ipmi.h index c078471..77e4b9a 100644 --- a/include/ipmi.h +++ b/include/ipmi.h @@ -253,4 +253,7 @@ void ipmi_wdt_final_reset(void); /* Discover id of settable ipmi sensors */ void ipmi_sensor_init(void); +/* Set the boot count once the OS is up and running */ +int ipmi_set_boot_count(void); + #endif |