Reduce OneNAND IPL common code

OneNAND IPL has common codes for RAM init, load data, and jump to 2nd
bootloader, but it's common code used about 300~400 bytes. So board
specific codes, such as lowlevel_init, can't has enough code. It make
a difficult to implement OneNAND IPL.

his patch make this common code as small as possible. and give
lowlevel_init can have more codes.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

onenand_ipl/onenand_boot.c

@@ -28,46 +28,16 @@
 
 #include "onenand_ipl.h"
 
-#ifdef CONFIG_SYS_PRINTF
-int print_info(void)
-{
-	printf(XLOADER_VERSION);
-
-	return 0;
-}
-#endif
-
 typedef int (init_fnc_t)(void);
 
-init_fnc_t *init_sequence[] = {
-	board_init,		/* basic board dependent setup */
-#ifdef CONFIG_SYS_PRINTF
-	serial_init,		/* serial communications setup */
-	print_info,
-#endif
-	NULL,
-};
-
 void start_oneboot(void)
 {
-	init_fnc_t **init_fnc_ptr;
 	uchar *buf;
 
-	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
-		if ((*init_fnc_ptr)() != 0)
-			hang();
-	}
-
 	buf = (uchar *) CONFIG_SYS_LOAD_ADDR;
 
-	if (!onenand_read_block0(buf))
-		buf += ONENAND_BLOCK_SIZE;
-
-	if (buf == (uchar *)CONFIG_SYS_LOAD_ADDR)
-		hang();
+	onenand_read_block0(buf);
 
-	/* go run U-Boot and never return */
-	printf("Starting OS Bootloader...\n");
 	((init_fnc_t *)CONFIG_SYS_LOAD_ADDR)();
 
 	/* should never come here */
@@ -75,7 +45,5 @@ void start_oneboot(void)
 
 void hang(void)
 {
-	/* if board_hang() returns, hange here */
-	printf("X-Loader hangs\n");
-	for (;;);
+       for (;;);
 }

onenand_ipl/onenand_ipl.h

@@ -23,12 +23,6 @@
 
 #include <linux/mtd/onenand_regs.h>
 
-#define ONENAND_BLOCK_SIZE              2048
-
-#ifndef CONFIG_SYS_PRINTF
-#define printf(format, args...)
-#endif
-
 #define onenand_readw(a)        readw(a)
 #define onenand_writew(v, a)    writew(v, a)