mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-29 23:53:33 +08:00
b3f9ec86e3
This patch adds a board command to configure the I2C bootstrap EEPROM values. Right now 533 and 667MHz are supported for booting either via NOR or NAND FLASH. Here the usage: => bootstrap 533 nor ;to configure the board for 533MHz NOR booting => bootstrap 667 nand ;to configure the board for 667MHz NNAND booting Signed-off-by: Stefan Roese <sr@denx.de>
112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
/*
|
|
* (C) Copyright 2007
|
|
* Stefan Roese, DENX Software Engineering, sr@denx.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 <command.h>
|
|
#include <i2c.h>
|
|
|
|
static u8 boot_533_nor[] = {
|
|
0x87, 0x78, 0x82, 0x52, 0x09, 0x57, 0xa0, 0x30,
|
|
0x40, 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
|
|
};
|
|
|
|
static u8 boot_533_nand[] = {
|
|
0x87, 0x78, 0x82, 0x52, 0x09, 0x57, 0xd0, 0x10,
|
|
0xa0, 0x68, 0x23, 0x58, 0x0d, 0x05, 0x00, 0x00
|
|
};
|
|
|
|
static u8 boot_667_nor[] = {
|
|
0x87, 0x78, 0xa2, 0x52, 0x09, 0xd7, 0xa0, 0x30,
|
|
0x40, 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00
|
|
};
|
|
|
|
static u8 boot_667_nand[] = {
|
|
0x87, 0x78, 0xa2, 0x52, 0x09, 0xd7, 0xd0, 0x10,
|
|
0xa0, 0x68, 0x23, 0x58, 0x0d, 0x05, 0x00, 0x00
|
|
};
|
|
|
|
static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
|
{
|
|
u8 chip;
|
|
u8 *buf;
|
|
int cpu_freq;
|
|
|
|
if (argc < 3) {
|
|
printf("Usage:\n%s\n", cmdtp->usage);
|
|
return 1;
|
|
}
|
|
|
|
cpu_freq = simple_strtol(argv[1], NULL, 10);
|
|
if (!((cpu_freq == 533) || (cpu_freq == 667))) {
|
|
printf("Unsupported cpu-frequency - only 533 and 667 supported\n");
|
|
return 1;
|
|
}
|
|
|
|
/* use 0x52 as I2C EEPROM address for now */
|
|
chip = 0x52;
|
|
|
|
if ((strcmp(argv[2], "nor") != 0) &&
|
|
(strcmp(argv[2], "nand") != 0)) {
|
|
printf("Unsupported boot-device - only nor|nand support\n");
|
|
return 1;
|
|
}
|
|
|
|
if (strcmp(argv[2], "nand") == 0) {
|
|
switch (cpu_freq) {
|
|
default:
|
|
case 533:
|
|
buf = boot_533_nand;
|
|
break;
|
|
case 667:
|
|
buf = boot_667_nand;
|
|
break;
|
|
}
|
|
} else {
|
|
switch (cpu_freq) {
|
|
default:
|
|
case 533:
|
|
buf = boot_533_nor;
|
|
break;
|
|
case 667:
|
|
buf = boot_667_nor;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i2c_write(chip, 0, 1, buf, 16) != 0)
|
|
printf("Error writing to EEPROM at address 0x%x\n", chip);
|
|
udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
|
|
|
|
printf("Done\n");
|
|
printf("Please power-cycle the board for the changes to take effect\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
bootstrap, 3, 0, do_bootstrap,
|
|
"bootstrap - program the I2C bootstrap EEPROM\n",
|
|
"<cpu-freq> <nor|nand> - program the I2C bootstrap EEPROM\n"
|
|
);
|