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/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <skiboot.h>
#include <opal.h>
#include <console.h>
#include <timebase.h>
#include <cpu.h>
#include <chip.h>
#include <xscom.h>
#include <errorlog.h>
bool manufacturing_mode = false;
struct platform platform;
DEFINE_LOG_ENTRY(OPAL_RC_ABNORMAL_REBOOT, OPAL_PLATFORM_ERR_EVT, OPAL_CEC,
OPAL_CEC_HARDWARE, OPAL_PREDICTIVE_ERR_FAULT_RECTIFY_REBOOT,
OPAL_ABNORMAL_POWER_OFF);
/*
* Various wrappers for platform functions
*/
static int64_t opal_cec_power_down(uint64_t request)
{
printf("OPAL: Shutdown request type 0x%llx...\n", request);
console_complete_flush();
if (platform.cec_power_down)
return platform.cec_power_down(request);
return OPAL_SUCCESS;
}
opal_call(OPAL_CEC_POWER_DOWN, opal_cec_power_down, 1);
static int64_t opal_cec_reboot(void)
{
printf("OPAL: Reboot request...\n");
console_complete_flush();
#ifdef ENABLE_FAST_RESET
/* Try a fast reset first */
fast_reset();
#endif
if (platform.cec_reboot)
return platform.cec_reboot();
return OPAL_SUCCESS;
}
opal_call(OPAL_CEC_REBOOT, opal_cec_reboot, 0);
static int64_t opal_cec_reboot2(uint32_t reboot_type, char *diag)
{
struct errorlog *buf;
switch (reboot_type) {
case OPAL_REBOOT_NORMAL:
return opal_cec_reboot();
case OPAL_REBOOT_PLATFORM_ERROR:
prlog(PR_EMERG,
"OPAL: Reboot requested due to Platform error.");
buf = opal_elog_create(&e_info(OPAL_RC_ABNORMAL_REBOOT), 0);
if (buf) {
log_append_msg(buf,
"OPAL: Reboot requested due to Platform error.");
if (diag) {
/* Add user section "DESC" */
log_add_section(buf, 0x44455350);
log_append_data(buf, diag, strlen(diag));
log_commit(buf);
}
} else {
prerror("OPAL: failed to log an error\n");
}
return xscom_trigger_xstop();
default:
printf("OPAL: Unsupported reboot request %d\n", reboot_type);
return OPAL_UNSUPPORTED;
break;
}
return OPAL_SUCCESS;
}
opal_call(OPAL_CEC_REBOOT2, opal_cec_reboot2, 2);
static void generic_platform_init(void)
{
/* Enable a UART if we find one in the device-tree */
uart_init();
if (uart_enabled())
uart_setup_opal_console();
else
force_dummy_console();
fake_rtc_init();
}
static int64_t generic_cec_power_down(uint64_t request __unused)
{
return OPAL_UNSUPPORTED;
}
static struct platform generic_platform = {
.name = "generic",
.init = generic_platform_init,
.cec_power_down = generic_cec_power_down,
};
void probe_platform(void)
{
struct platform *platforms = &__platforms_start;
unsigned int i;
/* Detect Manufacturing mode */
if (dt_find_property(dt_root, "ibm,manufacturing-mode")) {
prlog(PR_NOTICE, "PLAT: Manufacturing mode ON\n");
manufacturing_mode = true;
}
platform = generic_platform;
for (i = 0; &platforms[i] < &__platforms_end; i++) {
if (platforms[i].probe && platforms[i].probe()) {
platform = platforms[i];
break;
}
}
printf("PLAT: Detected %s platform\n", platform.name);
}
int start_preload_resource(enum resource_id id, uint32_t subid,
void *buf, size_t *len)
{
if (!platform.start_preload_resource)
return OPAL_UNSUPPORTED;
return platform.start_preload_resource(id, subid, buf, len);
}
int resource_loaded(enum resource_id id, uint32_t idx)
{
if (!platform.resource_loaded)
return OPAL_SUCCESS;
return platform.resource_loaded(id, idx);
}
int wait_for_resource_loaded(enum resource_id id, uint32_t idx)
{
int r = resource_loaded(id, idx);
int waited = 0;
while(r == OPAL_BUSY) {
opal_run_pollers();
time_wait_ms_nopoll(5);
waited+=5;
r = resource_loaded(id, idx);
}
prlog(PR_TRACE, "PLATFORM: wait_for_resource_loaded %x/%x %u ms\n",
id, idx, waited);
return r;
}
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