1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/*
* When everything is terrible, tell the FSP as much as possible as to why
*
* Copyright 2013-2019 IBM Corp.
*/
#include <errorlog.h>
#include <ipmi.h>
#include <pel.h>
#include <platform.h>
#include <processor.h>
#include <sbe-p9.h>
#include <skiboot.h>
#include <stack.h>
#include <timebase.h>
#include <xscom.h>
/* Use same attention SRC for BMC based machine */
DEFINE_LOG_ENTRY(OPAL_RC_ATTN, OPAL_PLATFORM_ERR_EVT,
OPAL_ATTN, OPAL_PLATFORM_FIRMWARE,
OPAL_ERROR_PANIC, OPAL_ABNORMAL_POWER_OFF);
/* Maximum buffer size to capture backtrace and other useful information */
#define IPMI_TI_BUFFER_SIZE (IPMI_MAX_PEL_SIZE - PEL_MIN_SIZE)
static char ti_buffer[IPMI_TI_BUFFER_SIZE];
#define STACK_BUF_ENTRIES 20
static struct bt_entry bt_buf[STACK_BUF_ENTRIES];
/* Log eSEL event with OPAL backtrace */
static void ipmi_log_terminate_event(const char *msg)
{
struct bt_metadata metadata;
unsigned int ti_len;
unsigned int ti_size;
struct errorlog *elog_buf;
/* Fill OPAL version */
ti_len = snprintf(ti_buffer, IPMI_TI_BUFFER_SIZE,
"OPAL version : %s\n", version);
/* File information */
ti_len += snprintf(ti_buffer + ti_len, IPMI_TI_BUFFER_SIZE - ti_len,
"File info : %s\n", msg);
ti_size = IPMI_TI_BUFFER_SIZE - ti_len;
/* Backtrace */
backtrace_create(bt_buf, STACK_BUF_ENTRIES, &metadata);
metadata.token = OPAL_LAST + 1;
backtrace_print(bt_buf, &metadata, ti_buffer + ti_len, &ti_size, true);
/* Create eSEL event and commit */
elog_buf = opal_elog_create(&e_info(OPAL_RC_ATTN), 0);
log_append_data(elog_buf, (char *)&ti_buffer, ti_len + ti_size);
log_commit(elog_buf);
}
void __attribute__((noreturn)) ipmi_terminate(const char *msg)
{
/* Log eSEL event */
if (ipmi_present())
ipmi_log_terminate_event(msg);
/*
* If mpipl is supported then trigger SBE interrupt
* to initiate mpipl
*/
p9_sbe_terminate();
/*
* Trigger software xstop (OPAL TI). It will stop all the CPU threads
* moving them into quiesced state. OCC will collect all FIR data.
* Upon checkstop signal, BMC will then decide whether to reboot/IPL or
* not depending on AutoReboot policy, if any. This helps in cases
* where OPAL is crashing/terminating before host reaches to runtime.
* With OpenBMC AutoReboot policy, in such cases, it will make sure
* that system is moved to Quiesced state after 3 or so attempts to
* IPL. Without OPAL TI, OpenBMC will never know that OPAL is
* terminating and system would go into never ending IPL'ing loop.
*
* Once the system reaches to runtime, OpenBMC resets the boot counter.
* Hence next time when BMC receieves the OPAL TI, it will IPL the
* system if AutoReboot is enabled. We don't need to worry about self
* rebooting.
*/
xscom_trigger_xstop();
/*
* Control will not reach here if software xstop has been supported and
* enabled. If not supported then fallback to cec reboot path below.
*/
/* Reboot call */
if (platform.cec_reboot)
platform.cec_reboot();
while (1)
time_wait_ms(100);
}
|
