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ppc4xx: Add bootstrap command for AMCC Sequoia (440EPx) eval board

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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>
This commit is contained in:
Stefan Roese 2007-06-19 17:22:44 +02:00
parent df8a24cdd3
commit b3f9ec86e3
2 changed files with 112 additions and 1 deletions
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2
board/amcc/sequoia/Makefile
View File

@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
COBJS = $(BOARD).o sdram.o
COBJS = $(BOARD).o cmd_sequoia.o sdram.o
SOBJS = init.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)

111
board/amcc/sequoia/cmd_sequoia.c Normal file
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@ -0,0 +1,111 @@
/*
* (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"
);