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/******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#include <stdint.h>
#include <rtas.h>
#include "rtas_board.h"
#include <bmc.h>
#include <rtas_i2c_bmc.h>
#include <rtas_ipmi_bmc.h>
#include "libipmi.h"
#include <hw.h>
void io_init(void);
short reg_get_flashside(void);
void rtas_init(void);
typedef struct {
uint64_t r3;
uint64_t addr;
volatile uint64_t id;
} slave_t;
volatile slave_t rtas_slave_interface;
static void
rtas_slave_loop(volatile slave_t * pIface)
{
uint64_t mask = pIface->id;
pIface->id = 0;
while (pIface->id != mask); {
int dly = 0x1000;
while (dly--);
}
pIface->id = 0;
asm volatile (" mr 3,%0 ; mtctr %1 ; bctr "
::"r"(pIface->r3), "r"(pIface->addr));
}
void
rtas_fetch_slaves(rtas_args_t * pArgs)
{
int retVal = 0;
int idx = 0;
uint32_t mask = pArgs->args[0] & 0xFFFFFFFE;
uint64_t *rtas_slave_loop_ptr = (uint64_t *)rtas_slave_loop;
while (mask) {
if (mask & 0x1) {
rtas_slave_interface.id = idx | 0x100;
*(int *) 0x3fc0 = (int)(unsigned long) &rtas_slave_interface; // r3
*(int *) 0x3f80 = *rtas_slave_loop_ptr; // addr
*(int *) 0x3fa0 = idx | 0x100; // pid
while (rtas_slave_interface.id);
}
mask >>= 1;
idx++;
}
pArgs->args[pArgs->nargs] = retVal;
}
void
rtas_start_cpu(rtas_args_t * pArgs)
{
int retVal = 0;
int idx = pArgs->args[0]; // pid
rtas_slave_interface.r3 = pArgs->args[2]; // r3
rtas_slave_interface.addr = pArgs->args[1]; // addr
asm(" sync ");
rtas_slave_interface.id = idx | 0x100; // pid
while (rtas_slave_interface.id);
pArgs->args[pArgs->nargs] = retVal;
}
void
rtas_read_vpd(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] =
bmc_read_vpd((uint8_t *) (uint64_t) pArgs->args[2], pArgs->args[1],
pArgs->args[0]);
}
void
rtas_write_vpd(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] =
bmc_write_vpd((uint8_t *) (uint64_t) pArgs->args[2], pArgs->args[1],
pArgs->args[0]);
}
void
rtas_set_indicator(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] = -1;
}
void
rtas_event_scan(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] = -1;
}
void
rtas_stop_bootwatchdog(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] = bmc_stop_bootwatchdog();
}
void
rtas_set_bootwatchdog(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] = bmc_set_bootwatchdog(pArgs->args[0]);
}
void
rtas_set_flashside(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] = bmc_set_flashside(pArgs->args[0]);
}
void
rtas_get_flashside(rtas_args_t * pArgs)
{
int retVal = bmc_get_flashside();
pArgs->args[pArgs->nargs] = retVal;
}
void
rtas_flash_test(rtas_args_t * pArgs)
{
pArgs->args[pArgs->nargs] = -1;
}
void
rtas_system_reboot(rtas_args_t * pArgs)
{
bmc_system_reboot();
pArgs->args[pArgs->nargs] = -1;
}
void
rtas_power_off(rtas_args_t * pArgs)
{
bmc_power_off();
pArgs->args[pArgs->nargs] = -1;
}
void
rtas_get_blade_descr(rtas_args_t * pArgs)
{
uint8_t *buffer = (uint8_t *) (uint64_t) pArgs->args[0];
uint32_t maxlen = pArgs->args[1];
uint32_t retlen = 0;
uint32_t retval = bmc_get_blade_descr(buffer, maxlen, &retlen);
pArgs->args[pArgs->nargs] = retlen;
pArgs->args[pArgs->nargs + 1] = retval;
}
// for JS20 cannot read blade descr
static uint32_t
dummy_get_blade_descr(uint8_t *dst, uint32_t maxlen, uint32_t *len)
{
// to not have a warning we need to do _something_ with *dst and maxlen...
*dst = *dst;
maxlen = maxlen;
*len = 0;
return -1;
}
/* read flashside from register */
short
reg_get_flashside(void)
{
short retVal;
uint8_t val = load8_ci(0xf4003fe3);
if (val & 0x80) {
// temp
retVal = 1;
} else {
// perm
retVal = 0;
}
return retVal;
}
void
rtas_init(void)
{
io_init();
if (u4Flag) {
bmc_system_reboot = ipmi_system_reboot;
bmc_power_off = ipmi_power_off;
bmc_set_flashside = ipmi_set_flashside;
bmc_get_flashside = reg_get_flashside;
bmc_stop_bootwatchdog = ipmi_oem_stop_bootwatchdog;
bmc_set_bootwatchdog = ipmi_oem_set_bootwatchdog;
bmc_read_vpd = ipmi_oem_read_vpd;
bmc_write_vpd = ipmi_oem_write_vpd;
bmc_get_blade_descr = ipmi_oem_get_blade_descr;
} else {
bmc_system_reboot = i2c_system_reboot;
bmc_power_off = i2c_power_off;
bmc_set_flashside = i2c_set_flashside;
bmc_get_flashside = i2c_get_flashside;
bmc_stop_bootwatchdog = i2c_stop_bootwatchdog;
bmc_set_bootwatchdog = i2c_set_bootwatchdog;
bmc_read_vpd = i2c_read_vpd;
bmc_write_vpd = i2c_write_vpd;
bmc_get_blade_descr = dummy_get_blade_descr;
}
}
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