powerpc: Move some extern declarations from C code into headers
This also make klimit have the same type on 32-bit as on 64-bit,
namely unsigned long, and defines and initializes it in one place.
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 1bf3642..6391a4a 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -71,10 +71,6 @@
typedef int interpret_func(struct device_node *, unsigned long *,
int, int, int);
-extern struct rtas_t rtas;
-extern struct lmb lmb;
-extern unsigned long klimit;
-
static int __initdata dt_root_addr_cells;
static int __initdata dt_root_size_cells;
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 06e4ef2..bae4bff 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -69,6 +69,8 @@
EXPORT_SYMBOL(_machine);
#endif
+unsigned long klimit = (unsigned long) _end;
+
/*
* This still seems to be needed... -- paulus
*/
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index f73d768..c98cfcc 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -279,7 +279,6 @@
/* Warning, IO base is not yet inited */
void __init setup_arch(char **cmdline_p)
{
- extern char *klimit;
extern void do_init_bootmem(void);
/* so udelay does something sensible, assume <= 1000 bogomips */
@@ -338,7 +337,7 @@
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
- init_mm.brk = (unsigned long) klimit;
+ init_mm.brk = klimit;
/* Save unparsed command line copy for /proc/cmdline */
strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index be607b8..6791668 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -96,14 +96,6 @@
do { udbg_putc = call_rtas_display_status_delay; } while(0)
#endif
-/* extern void *stab; */
-extern unsigned long klimit;
-
-extern void mm_init_ppc64(void);
-extern void early_init_devtree(void *flat_dt);
-extern void unflatten_device_tree(void);
-extern void check_for_initrd(void);
-
int have_of = 1;
int boot_cpuid = 0;
int boot_cpuid_phys = 0;