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#include <linux/cpu.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pm.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <asm/reboot.h>
#include <asm/system.h>
#include <ifxmips.h>
#include <ifxmips_cgu.h>
#define SYSTEM_AR9 "AR9"
#define SYSTEM_AR9_CHIPID1 0x00129083
#define SYSTEM_AR9_CHIPID2 0x0012B083
static unsigned int chiprev = 0;
unsigned char ifxmips_sys_type[IFXMIPS_SYS_TYPE_LEN];
unsigned int
ifxmips_get_cpu_ver(void)
{
return (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0xF0000000) >> 28;
}
EXPORT_SYMBOL(ifxmips_get_cpu_ver);
const char*
get_system_type(void)
{
return ifxmips_sys_type;
}
static void
ifxmips_machine_restart(char *command)
{
printk(KERN_NOTICE "System restart\n");
local_irq_disable();
ifxmips_w32(ifxmips_r32(IFXMIPS_RCU_RST) | IFXMIPS_RCU_RST_ALL,
IFXMIPS_RCU_RST);
for(;;);
}
static void
ifxmips_machine_halt(void)
{
printk(KERN_NOTICE "System halted.\n");
local_irq_disable();
for(;;);
}
static void
ifxmips_machine_power_off(void)
{
printk(KERN_NOTICE "Please turn off the power now.\n");
local_irq_disable();
for(;;);
}
static inline u16 get_chip_partnum(void)
{
return (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFF000) >> 12;
}
void __init
ifxmips_soc_setup(void)
{
char *name = SYSTEM_AR9;
ioport_resource.start = IOPORT_RESOURCE_START;
ioport_resource.end = IOPORT_RESOURCE_END;
iomem_resource.start = IOMEM_RESOURCE_START;
iomem_resource.end = IOMEM_RESOURCE_END;
_machine_restart = ifxmips_machine_restart;
_machine_halt = ifxmips_machine_halt;
pm_power_off = ifxmips_machine_power_off;
switch (get_chip_partnum())
{
case 0x16C,
name = = "ARX188",
break;
case 0x16D,
name = = "ARX168",
break;
case 0x16F,
name = = "ARX182",
break;
case 0x170,
name = = "GRX188",
break;
case 0x171,
name = = "GRX168",
break;
default:
printk(KERN_ERR "This is not a AR9 chiprev : 0x%08X\n", get_chip_partnum());
BUG();
break;
}
snprintf(ifxmips_sys_type, IFXMIPS_SYS_TYPE_LEN - 1, "%s rev1.%d %dMhz",
name, ifxmips_get_cpu_ver(),
ifxmips_get_cpu_hz() / 1000000);
ifxmips_sys_type[IFXMIPS_SYS_TYPE_LEN - 1] = '\0';
}
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