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/*
* Copyright (C) 2005 Texas Instruments.
*
* (C) Copyright 2004
* Jian Zhang, Texas Instruments, jzhang@ti.com.
*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <part.h>
#include <fat.h>
#include <mmc.h>
#ifdef CFG_PRINTF
int print_info(void)
{
printf ("\n\nTexas Instruments X-Loader 1.41 ("
__DATE__ " - " __TIME__ ")\n");
return 0;
}
#endif
typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] = {
cpu_init, /* basic cpu dependent setup */
board_init, /* basic board dependent setup */
#ifdef CFG_PRINTF
serial_init, /* serial communications setup */
print_info,
#endif
nand_init, /* board specific nand init */
NULL,
};
#ifdef CFG_CMD_FAT
extern char * strcpy(char * dest,const char *src);
#else
char * strcpy(char * dest,const char *src)
{
char *tmp = dest;
while ((*dest++ = *src++) != '\0')
/* nothing */;
return tmp;
}
#endif
#ifdef CONFIG_MMC
int mmc_read_bootloader(int dev, int part)
{
long size;
unsigned long offset = CFG_LOADADDR;
block_dev_desc_t *dev_desc = NULL;
unsigned char ret = 0;
ret = mmc_init(dev);
if (ret != 0){
printf("\n MMC init failed \n");
return -1;
}
if (part) { /* FAT Read for extenal SD card */
dev_desc = mmc_get_dev(dev);
size = file_fat_read("u-boot.bin", (unsigned char *)offset, 0);
if (size == -1)
return -1;
} else { /* RAW read for EMMC */
ret = mmc_read(dev, 0x400, (unsigned char *)offset, 0x60000);
if (ret != 1)
return -1;
}
return 0;
}
#endif
extern int do_load_serial_bin(ulong offset, int baudrate);
extern int do_comand_line(void);
#define __raw_readl(a) (*(volatile unsigned int *)(a))
void start_armboot (void)
{
init_fnc_t **init_fnc_ptr;
int i;
uchar *buf;
char boot_dev_name[8];
u32 boot_device = 0;
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0) {
hang ();
}
}
#ifdef START_LOADB_DOWNLOAD
strcpy(boot_dev_name, "UART");
do_load_serial_bin (CFG_LOADADDR, 115200);
do_comand_line();
#else // START_LOADB_DOWNLOAD
/* Read boot device from saved scratch pad */
boot_device = __raw_readl(0x480029c0) & 0xff;
buf = (uchar*) CFG_LOADADDR;
switch(boot_device) {
case 0x03:
strcpy(boot_dev_name, "ONENAND");
#if defined(CFG_ONENAND)
for (i = ONENAND_START_BLOCK; i < ONENAND_END_BLOCK; i++) {
if (!onenand_read_block(buf, i))
buf += ONENAND_BLOCK_SIZE;
else
goto error;
}
#endif
break;
case 0x02:
default:
strcpy(boot_dev_name, "NAND");
#if defined(CFG_NAND)
for (i = NAND_UBOOT_START; i < NAND_UBOOT_END;
i+= NAND_BLOCK_SIZE) {
if (!nand_read_block(buf, i))
buf += NAND_BLOCK_SIZE; /* advance buf ptr */
}
#endif
break;
case 0x05:
strcpy(boot_dev_name, "EMMC");
#if defined(CONFIG_MMC)
if (mmc_read_bootloader(1, 0) != 0)
goto error;
#else
goto error;
#endif
break;
case 0x06:
strcpy(boot_dev_name, "MMC/SD1");
#if defined(CONFIG_MMC) && defined(CFG_CMD_FAT)
if (mmc_read_bootloader(0, 1) != 0)
goto error;
#else
goto error;
#endif
break;
};
#endif // START_LOADB_DOWNLOAD
/* go run U-Boot and never return */
// printf("Address of serial_printf = %08x\n", &serial_printf);
printf("Starting OS Bootloader from %s ...\n", boot_dev_name);
((init_fnc_t *)CFG_LOADADDR)();
/* should never come here */
#if defined(CFG_ONENAND) || defined(CONFIG_MMC)
error:
#endif
printf("Could not load or run bootloader!\n");
hang();
}
#if 0
#include <asm/arch/mux.h>
/*******************************************************
* Routine: delay
* Description: spinning delay to use before udelay works
******************************************************/
static inline void delay(unsigned long loops)
{
__asm__ volatile ("1:\n" "subs %0, %1, #1\n"
"bne 1b":"=r" (loops):"0"(loops));
}
static inline void udelay(unsigned long us)
{
delay(us * 200); /* approximate */
}
#define __raw_readl(a) (*(volatile unsigned int *)(a))
#define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
#define __raw_readw(a) (*(volatile unsigned short *)(a))
#define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
#define MUX_VAL(OFFSET,VALUE)\
__raw_writew((VALUE), OMAP34XX_CTRL_BASE + (OFFSET));
#define CP(x) (CONTROL_PADCONF_##x)
void hang (void)
{
/* call board specific hang function */
board_hang();
/* if board_hang() returns, hange here */
printf("X-Loader hangs\n");
for(;;) {
MUX_VAL(CP(GPMC_nCS6), (IEN | PTD | EN | M4)) /*GPT_PWM11/GPIO57*/
udelay(500*1000);
MUX_VAL(CP(GPMC_nCS6), (IEN | PTU | EN | M4)) /*GPT_PWM11/GPIO57*/
udelay(500*1000);
}
}
#else
void hang (void)
{
/* call board specific hang function */
board_hang();
/* if board_hang() returns, hange here */
printf("X-Loader hangs\n");
for(;;)
;
}
#endif
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