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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>
This commit is contained in:
Kyungmin Park 2009-03-03 09:05:53 +09:00 committed by Scott Wood
parent 16f2f5a351
commit 196c74311f
2 changed files with 2 additions and 40 deletions
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36
onenand_ipl/onenand_boot.c
View File

@ -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;
onenand_read_block0(buf);
if (buf == (uchar *)CONFIG_SYS_LOAD_ADDR)
hang();
/* 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 (;;);
}

6
onenand_ipl/onenand_ipl.h
View File

@ -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)