115 lines
No EOL
2.3 KiB
C
115 lines
No EOL
2.3 KiB
C
#include <common.h>
|
|
#include <asm/processor.h>
|
|
#include <memio.h>
|
|
#include <linux/ctype.h>
|
|
|
|
static __inline__ unsigned long
|
|
get_msr(void)
|
|
{
|
|
unsigned long msr;
|
|
|
|
asm volatile("mfmsr %0" : "=r" (msr) :);
|
|
return msr;
|
|
}
|
|
|
|
static __inline__ void
|
|
set_msr(unsigned long msr)
|
|
{
|
|
asm volatile("mtmsr %0" : : "r" (msr));
|
|
}
|
|
|
|
static __inline__ unsigned long
|
|
get_dec(void)
|
|
{
|
|
unsigned long val;
|
|
|
|
asm volatile("mfdec %0" : "=r" (val) :);
|
|
return val;
|
|
}
|
|
|
|
|
|
static __inline__ void
|
|
set_dec(unsigned long val)
|
|
{
|
|
asm volatile("mtdec %0" : : "r" (val));
|
|
}
|
|
|
|
|
|
void
|
|
enable_interrupts(void)
|
|
{
|
|
set_msr (get_msr() | MSR_EE);
|
|
}
|
|
|
|
/* returns flag if MSR_EE was set before */
|
|
int
|
|
disable_interrupts(void)
|
|
{
|
|
ulong msr;
|
|
|
|
msr = get_msr();
|
|
set_msr (msr & ~MSR_EE);
|
|
return ((msr & MSR_EE) != 0);
|
|
}
|
|
|
|
u8 in8(u32 port)
|
|
{
|
|
return in_byte(port);
|
|
}
|
|
|
|
void out8(u32 port, u8 val)
|
|
{
|
|
out_byte(port, val);
|
|
}
|
|
|
|
unsigned long in32(u32 port)
|
|
{
|
|
return in_long(port);
|
|
}
|
|
|
|
static inline void
|
|
soft_restart(unsigned long addr)
|
|
{
|
|
/* SRR0 has system reset vector, SRR1 has default MSR value */
|
|
/* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */
|
|
|
|
__asm__ __volatile__ ("mtspr 26, %0" :: "r" (addr));
|
|
__asm__ __volatile__ ("li 4, (1 << 6)" ::: "r4");
|
|
__asm__ __volatile__ ("mtspr 27, 4");
|
|
__asm__ __volatile__ ("rfi");
|
|
|
|
while(1); /* not reached */
|
|
}
|
|
/*
|
|
void
|
|
do_reset (void)
|
|
{
|
|
ulong addr;
|
|
// flush and disable I/D cache
|
|
__asm__ __volatile__ ("mfspr 3, 1008" ::: "r3");
|
|
__asm__ __volatile__ ("ori 5, 5, 0xcc00" ::: "r5");
|
|
__asm__ __volatile__ ("ori 4, 3, 0xc00" ::: "r4");
|
|
__asm__ __volatile__ ("andc 5, 3, 5" ::: "r5");
|
|
__asm__ __volatile__ ("sync");
|
|
__asm__ __volatile__ ("mtspr 1008, 4");
|
|
__asm__ __volatile__ ("isync");
|
|
__asm__ __volatile__ ("sync");
|
|
__asm__ __volatile__ ("mtspr 1008, 5");
|
|
__asm__ __volatile__ ("isync");
|
|
__asm__ __volatile__ ("sync");
|
|
|
|
#ifdef CFG_RESET_ADDRESS
|
|
addr = CFG_RESET_ADDRESS;
|
|
#else
|
|
//
|
|
// note: when CFG_MONITOR_BASE points to a RAM address,
|
|
// CFG_MONITOR_BASE - sizeof (ulong) is usually a valid
|
|
// address. Better pick an address known to be invalid on your
|
|
// system and assign it to CFG_RESET_ADDRESS.
|
|
///
|
|
addr = CFG_MONITOR_BASE - sizeof (ulong);
|
|
#endif
|
|
soft_restart(addr);
|
|
while(1); // not reached
|
|
}
|
|
*/ |