1 files changed, 148 insertions, 0 deletions
diff --git a/tools/updater/utils.c b/tools/updater/utils.c
new file mode 100644
index 0000000..e230e19
--- /dev/null
+++ b/tools/updater/utils.c
@@ -0,0 +1,148 @@
+#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);
+}
+
+unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
+{
+        unsigned long result = 0,value;
+
+        if (*cp == '0') {
+                cp++;
+                if ((*cp == 'x') && isxdigit(cp[1])) {
+                        base = 16;
+                        cp++;
+                }
+                if (!base) {
+                        base = 8;
+                }
+        }
+        if (!base) {
+                base = 10;
+        }
+        while (isxdigit(*cp) && (value = isdigit(*cp) ? *cp-'0' : (islower(*cp)
+            ? toupper(*cp) : *cp)-'A'+10) < base) {
+                result = result*base + value;
+                cp++;
+        }
+        if (endp)
+                *endp = (char *)cp;
+        return result;
+}
+
+long simple_strtol(const char *cp,char **endp,unsigned int base)
+{
+        if(*cp=='-')
+                return -simple_strtoul(cp+1,endp,base);
+        return simple_strtoul(cp,endp,base);
+}
+
+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 */
+}