PPC32: remove some compile warnings in the CHRP and powermac boot

wrappers by prototyping the function pointers we use.

arch/ppc/boot/chrp/main.c

@@ -46,6 +46,8 @@ char *avail_high;
 
 static char scratch[SCRATCH_SIZE];	/* 1MB of scratch space for gunzip */
 
+typedef void (*kernel_start_t)(int, int, void *, unsigned int, unsigned int);
+
 void
 chrpboot(int a1, int a2, void *prom)
 {
@@ -93,10 +95,10 @@ chrpboot(int a1, int a2, void *prom)
     make_bi_recs(((unsigned long) dst + len), "chrpboot", _MACH_chrp,
 		    (PROG_START + PROG_SIZE));
     
-    sa = (unsigned long)PROG_START;
+    sa = PROG_START;
     printf("start address = 0x%x\n\r", sa);
 
-    (*(void (*)())sa)(a1, a2, prom, initrd_start, initrd_size);
+    (*(kernel_start_t)sa)(a1, a2, prom, initrd_start, initrd_size);
 
     printf("returned?\n\r");
 

arch/ppc/boot/pmac/chrpmain.c

@@ -41,6 +41,8 @@ char *avail_high;
 
 #define SCRATCH_SIZE	(128 << 10)
 
+typedef void (*kernel_start_t)(int, int, void *);
+
 void boot(int a1, int a2, void *prom)
 {
     unsigned sa, len;
@@ -90,7 +92,7 @@ void boot(int a1, int a2, void *prom)
     sa = (unsigned long)PROG_START;
     printf("start address = 0x%x\n", sa);
 
-    (*(void (*)())sa)(a1, a2, prom);
+    (*(kernel_start_t)sa)(a1, a2, prom);
 
     printf("returned?\n");
 

arch/ppc/boot/pmac/coffmain.c

@@ -47,6 +47,8 @@ char *avail_high;
 
 static char heap[SCRATCH_SIZE];
 
+typedef void (*kernel_start_t)(int, int, void *);
+
 void boot(int a1, int a2, void *prom)
 {
     unsigned sa, len;
@@ -95,7 +97,7 @@ void boot(int a1, int a2, void *prom)
     sa = (unsigned long)PROG_START;
     printf("start address = 0x%x\n", sa);
 
-    (*(void (*)())sa)(a1, a2, prom);
+    (*(kernel_start_t)sa)(a1, a2, prom);
 
     printf("returned?\n");
 

arch/ppc/boot/pmac/start.c

 /*
- * BK Id: SCCS/s.start.c 1.10 07/25/01 18:13:07 trini
+ * BK Id: %F% %I% %G% %U% %#%
  */
 /*
  * Copyright (C) Paul Mackerras 1997.
@@ -14,7 +14,7 @@
 extern int strlen(const char *s);
 extern void boot(int a1, int a2, void *prom);
 
-int (*prom)();
+int (*prom)(void *);
 
 void *chosen_handle;
 void *stdin;
@@ -29,7 +29,7 @@ void printk(char *fmt, ...);
 void
 start(int a1, int a2, void *promptr)
 {
-    prom = (int (*)()) promptr;
+    prom = (int (*)(void *)) promptr;
     chosen_handle = finddevice("/chosen");
     if (chosen_handle == (void *) -1)
 	exit();