PPC32: Use char[] consistently with __bss_start, _end, etc.

arch/ppc/kernel/setup.c

@@ -268,7 +268,6 @@ __init
 unsigned long
 early_init(int r3, int r4, int r5)
 {
-	extern char __bss_start, _end;
  	unsigned long phys;
 	unsigned long offset = reloc_offset();
 
@@ -277,7 +276,7 @@ early_init(int r3, int r4, int r5)
 
 	/* First zero the BSS -- use memset, some arches don't have
 	 * caches on yet */
-	memset_io(PTRRELOC(&__bss_start), 0, &_end - &__bss_start);
+	memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
 
 	/*
 	 * Identify the CPU type and fix up code sections
@@ -466,7 +465,6 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 struct bi_record *find_bootinfo(void)
 {
 	struct bi_record *rec;
-	extern char __bss_start[];
 
 	rec = (struct bi_record *)_ALIGN((ulong)__bss_start+(1<<20)-1,(1<<20));
 	if ( rec->tag != BI_FIRST ) {
@@ -591,7 +589,6 @@ arch_initcall(ppc_init);
 void __init setup_arch(char **cmdline_p)
 {
 	extern int panic_timeout;
-	extern char _etext[], _edata[];
 	extern char *klimit;
 	extern void do_init_bootmem(void);
 

arch/ppc/syslib/prom_init.c

@@ -133,7 +133,6 @@ char *bootdevice;
 struct device_node *allnodes;
 
 extern char *klimit;
-extern char _stext;
 
 static void __init
 prom_exit(void)
@@ -601,7 +600,7 @@ prom_hold_cpus(unsigned long mem)
 	/* copy the holding pattern code to someplace safe (0) */
 	/* the holding pattern is now within the first 0x100
 	   bytes of the kernel image -- paulus */
-	memcpy((void *)0, &_stext, 0x100);
+	memcpy((void *)0, _stext, 0x100);
 	flush_icache_range(0, 0x100);
 
 	/* look for cpus */
@@ -631,7 +630,7 @@ prom_hold_cpus(unsigned long mem)
 		prom_print(path);
 		*(ulong *)(0x4) = 0;
 		call_prom("start-cpu", 3, 0, node,
-			  (char *)__secondary_hold - &_stext, cpu);
+			  (char *)__secondary_hold - _stext, cpu);
 		prom_print("...");
 		for ( i = 0 ; (i < 10000) && (*(ulong *)(0x4) == 0); i++ )
 			;

include/asm-ppc/sections.h

@@ -2,6 +2,10 @@
 #ifndef _PPC_SECTIONS_H
 #define _PPC_SECTIONS_H
 
+#include <asm-generic/sections.h>
+
+extern char _end[];
+
 #define __pmac __attribute__ ((__section__ (".pmac.text")))
 #define __pmacdata __attribute__ ((__section__ (".pmac.data")))
 #define __pmacfunc(__argpmac) \