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/*
* (C) Copyright 2009
* Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
*
* 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>
#include <net.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/spr_xloader_table.h>
#include <asm/arch/spr_defs.h>
#define CPU 0
#define DDR 1
#define SRAM_REL 0xD2801000
DECLARE_GLOBAL_DATA_PTR;
static struct chip_data chip_data;
int dram_init(void)
{
struct xloader_table *xloader_tb =
(struct xloader_table *)XLOADER_TABLE_ADDRESS;
struct xloader_table_1_1 *table_1_1;
struct xloader_table_1_2 *table_1_2;
struct chip_data *chip = &chip_data;
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = get_ram_size(PHYS_SDRAM_1,
PHYS_SDRAM_1_MAXSIZE);
if (XLOADER_TABLE_VERSION_1_1 == xloader_tb->table_version) {
table_1_1 = &xloader_tb->table.table_1_1;
chip->dramfreq = table_1_1->ddrfreq;
chip->dramtype = table_1_1->ddrtype;
} else if (XLOADER_TABLE_VERSION_1_2 == xloader_tb->table_version) {
table_1_2 = &xloader_tb->table.table_1_2;
chip->dramfreq = table_1_2->ddrfreq;
chip->dramtype = table_1_2->ddrtype;
} else {
chip->dramfreq = -1;
}
return 0;
}
int misc_init_r(void)
{
#if defined(CONFIG_CMD_NET)
uchar mac_id[6];
if (!eth_getenv_enetaddr("ethaddr", mac_id) && !i2c_read_mac(mac_id))
eth_setenv_enetaddr("ethaddr", mac_id);
#endif
setenv("verify", "n");
#if defined(CONFIG_SPEAR_USBTTY)
setenv("stdin", "usbtty");
setenv("stdout", "usbtty");
setenv("stderr", "usbtty");
#endif
return 0;
}
int spear_board_init(ulong mach_type)
{
struct xloader_table *xloader_tb =
(struct xloader_table *)XLOADER_TABLE_ADDRESS;
struct xloader_table_1_2 *table_1_2;
struct chip_data *chip = &chip_data;
gd->bd->bi_arch_number = mach_type;
/* adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR;
/* CPU is initialized to work at 333MHz in Xloader */
chip->cpufreq = 333;
if (XLOADER_TABLE_VERSION_1_2 == xloader_tb->table_version) {
table_1_2 = &xloader_tb->table.table_1_2;
memcpy(chip->version, table_1_2->version,
sizeof(chip->version));
}
return 0;
}
static int i2c_read_mac(uchar *buffer)
{
u8 buf[2];
i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
/* Check if mac in i2c memory is valid */
if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
/* Valid mac address is saved in i2c eeprom */
i2c_read(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, buffer, MAC_LEN);
return 0;
}
return -1;
}
static int write_mac(uchar *mac)
{
u8 buf[2];
buf[0] = (u8)MAGIC_BYTE0;
buf[1] = (u8)MAGIC_BYTE1;
i2c_write(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
buf[0] = (u8)~MAGIC_BYTE0;
buf[1] = (u8)~MAGIC_BYTE1;
i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
/* check if valid MAC address is saved in I2C EEPROM or not? */
if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
i2c_write(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, mac, MAC_LEN);
puts("I2C EEPROM written with mac address \n");
return 0;
}
puts("I2C EEPROM writing failed \n");
return -1;
}
int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
void (*sram_setfreq) (unsigned int, unsigned int);
struct chip_data *chip = &chip_data;
unsigned char mac[6];
unsigned int reg, frequency;
char *s, *e;
char i2c_mac[20];
if ((argc > 3) || (argc < 2)) {
cmd_usage(cmdtp);
return 1;
}
if ((!strcmp(argv[1], "cpufreq")) || (!strcmp(argv[1], "ddrfreq"))) {
frequency = simple_strtoul(argv[2], NULL, 0);
if (frequency > 333) {
printf("Frequency is limited to 333MHz\n");
return 1;
}
sram_setfreq = memcpy((void *)SRAM_REL, setfreq, setfreq_sz);
if (!strcmp(argv[1], "cpufreq")) {
sram_setfreq(CPU, frequency);
printf("CPU frequency changed to %u\n", frequency);
chip->cpufreq = frequency;
} else {
sram_setfreq(DDR, frequency);
printf("DDR frequency changed to %u\n", frequency);
chip->dramfreq = frequency;
}
return 0;
} else if (!strcmp(argv[1], "ethaddr")) {
s = argv[2];
for (reg = 0; reg < 6; ++reg) {
mac[reg] = s ? simple_strtoul(s, &e, 16) : 0;
if (s)
s = (*e) ? e + 1 : e;
}
write_mac(mac);
return 0;
} else if (!strcmp(argv[1], "print")) {
if (chip->cpufreq == -1)
printf("CPU Freq = Not Known\n");
else
printf("CPU Freq = %d MHz\n", chip->cpufreq);
if (chip->dramfreq == -1)
printf("DDR Freq = Not Known\n");
else
printf("DDR Freq = %d MHz\n", chip->dramfreq);
if (chip->dramtype == DDRMOBILE)
printf("DDR Type = MOBILE\n");
else if (chip->dramtype == DDR2)
printf("DDR Type = DDR2\n");
else
printf("DDR Type = Not Known\n");
if (!i2c_read_mac(mac)) {
sprintf(i2c_mac, "%pM", mac);
printf("Ethaddr (from i2c mem) = %s\n", i2c_mac);
} else {
printf("Ethaddr (from i2c mem) = Not set\n");
}
printf("Xloader Rev = %s\n", chip->version);
return 0;
}
cmd_usage(cmdtp);
return 1;
}
U_BOOT_CMD(chip_config, 3, 1, do_chip_config,
"configure chip",
"chip_config cpufreq/ddrfreq frequency\n"
"chip_config print");
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