2 #include <asm/processor.h>
4 #include <linux/ctype.h>
6 static __inline__ unsigned long
11 asm volatile("mfmsr %0" : "=r" (msr) :);
15 static __inline__ void
16 set_msr(unsigned long msr)
18 asm volatile("mtmsr %0" : : "r" (msr));
21 static __inline__ unsigned long
26 asm volatile("mfdec %0" : "=r" (val) :);
31 static __inline__ void
32 set_dec(unsigned long val)
34 asm volatile("mtdec %0" : : "r" (val));
39 enable_interrupts(void)
41 set_msr (get_msr() | MSR_EE);
44 /* returns flag if MSR_EE was set before */
46 disable_interrupts(void)
51 set_msr (msr & ~MSR_EE);
52 return ((msr & MSR_EE) != 0);
60 void out8(u32 port, u8 val)
65 unsigned long in32(u32 port)
70 unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
72 unsigned long result = 0,value;
76 if ((*cp == 'x') && isxdigit(cp[1])) {
87 while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp)
88 ? toupper(*cp) : *cp)-'A'+10) < base) {
89 result = result*base + value;
97 long simple_strtol(const char *cp,char **endp,unsigned int base)
100 return -simple_strtoul(cp+1,endp,base);
101 return simple_strtoul(cp,endp,base);
105 soft_restart(unsigned long addr)
107 /* SRR0 has system reset vector, SRR1 has default MSR value */
108 /* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */
110 __asm__ __volatile__ ("mtspr 26, %0" :: "r" (addr));
111 __asm__ __volatile__ ("li 4, (1 << 6)" ::: "r4");
112 __asm__ __volatile__ ("mtspr 27, 4");
113 __asm__ __volatile__ ("rfi");
115 while(1); /* not reached */
122 /* flush and disable I/D cache */
123 __asm__ __volatile__ ("mfspr 3, 1008" ::: "r3");
124 __asm__ __volatile__ ("ori 5, 5, 0xcc00" ::: "r5");
125 __asm__ __volatile__ ("ori 4, 3, 0xc00" ::: "r4");
126 __asm__ __volatile__ ("andc 5, 3, 5" ::: "r5");
127 __asm__ __volatile__ ("sync");
128 __asm__ __volatile__ ("mtspr 1008, 4");
129 __asm__ __volatile__ ("isync");
130 __asm__ __volatile__ ("sync");
131 __asm__ __volatile__ ("mtspr 1008, 5");
132 __asm__ __volatile__ ("isync");
133 __asm__ __volatile__ ("sync");
135 #ifdef CONFIG_SYS_RESET_ADDRESS
136 addr = CONFIG_SYS_RESET_ADDRESS;
139 * note: when CONFIG_SYS_MONITOR_BASE points to a RAM address,
140 * CONFIG_SYS_MONITOR_BASE - sizeof (ulong) is usually a valid
141 * address. Better pick an address known to be invalid on your
142 * system and assign it to CONFIG_SYS_RESET_ADDRESS.
144 addr = CONFIG_SYS_MONITOR_BASE - sizeof (ulong);
147 while(1); /* not reached */