mm/h8300: prepare for removing num_physpages and simplify mem_init()

Prepare for removing num_physpages and simplify mem_init().
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/h8300/mm/init.c

@@ -121,40 +121,20 @@ void __init paging_init(void)
 
 void __init mem_init(void)
 {
-	int codek = 0, datak = 0, initk = 0;
-	/* DAVIDM look at setup memory map generically with reserved area */
-	unsigned long tmp;
-	extern unsigned long  _ramend, _ramstart;
-	unsigned long len = &_ramend - &_ramstart;
-	unsigned long start_mem = memory_start; /* DAVIDM - these must start at end of kernel */
-	unsigned long end_mem   = memory_end; /* DAVIDM - this must not include kernel stack at top */
+	unsigned long codesize = _etext - _stext;
 
-#ifdef DEBUG
-	printk(KERN_DEBUG "Mem_init: start=%lx, end=%lx\n", start_mem, end_mem);
-#endif
-
-	end_mem &= PAGE_MASK;
-	high_memory = (void *) end_mem;
+	pr_devel("Mem_init: start=%lx, end=%lx\n", memory_start, memory_end);
 
-	start_mem = PAGE_ALIGN(start_mem);
-	max_mapnr = num_physpages = MAP_NR(high_memory);
+	high_memory = (void *) (memory_end & PAGE_MASK);
+	max_mapnr = MAP_NR(high_memory);
 
 	/* this will put all low memory onto the freelists */
 	free_all_bootmem();
 
-	codek = (_etext - _stext) >> 10;
-	datak = (__bss_stop - _sdata) >> 10;
-	initk = (__init_begin - __init_end) >> 10;
-
-	tmp = nr_free_pages() << PAGE_SHIFT;
-	printk(KERN_INFO "Memory available: %luk/%luk RAM, %luk/%luk ROM (%dk kernel code, %dk data)\n",
-	       tmp >> 10,
-	       len >> 10,
-	       (rom_length > 0) ? ((rom_length >> 10) - codek) : 0,
-	       rom_length >> 10,
-	       codek,
-	       datak
-	       );
+	mem_init_print_info(NULL);
+	if (rom_length > 0 && rom_length > codesize)
+		pr_info("Memory available: %luK/%luK ROM\n",
+			(rom_length - codesize) >> 10, rom_length >> 10);
 }