| /* |
| * (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_emi.h> |
| #include <asm/arch/spr_defs.h> |
| |
| #define CPU 0 |
| #define DDR 1 |
| #define SRAM_REL 0xD2801000 |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| #if defined(CONFIG_CMD_NET) |
| static int i2c_read_mac(uchar *buffer); |
| #endif |
| |
| int dram_init(void) |
| { |
| /* Store complete RAM size and return */ |
| gd->ram_size = get_ram_size(PHYS_SDRAM_1, PHYS_SDRAM_1_MAXSIZE); |
| |
| return 0; |
| } |
| |
| void dram_init_banksize(void) |
| { |
| gd->bd->bi_dram[0].start = PHYS_SDRAM_1; |
| gd->bd->bi_dram[0].size = gd->ram_size; |
| } |
| |
| 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; |
| } |
| |
| #ifdef CONFIG_SPEAR_EMI |
| struct cust_emi_para { |
| unsigned int tap; |
| unsigned int tsdp; |
| unsigned int tdpw; |
| unsigned int tdpr; |
| unsigned int tdcs; |
| }; |
| |
| /* EMI timing setting of m28w640hc of linux kernel */ |
| const struct cust_emi_para emi_timing_m28w640hc = { |
| .tap = 0x10, |
| .tsdp = 0x05, |
| .tdpw = 0x0a, |
| .tdpr = 0x0a, |
| .tdcs = 0x05, |
| }; |
| |
| /* EMI timing setting of bootrom */ |
| const struct cust_emi_para emi_timing_bootrom = { |
| .tap = 0xf, |
| .tsdp = 0x0, |
| .tdpw = 0xff, |
| .tdpr = 0x111, |
| .tdcs = 0x02, |
| }; |
| |
| void spear_emi_init(void) |
| { |
| const struct cust_emi_para *p = &emi_timing_m28w640hc; |
| struct emi_regs *emi_regs_p = (struct emi_regs *)CONFIG_SPEAR_EMIBASE; |
| unsigned int cs; |
| unsigned int val, tmp; |
| |
| val = readl(CONFIG_SPEAR_RASBASE); |
| |
| if (val & EMI_ACKMSK) |
| tmp = 0x3f; |
| else |
| tmp = 0x0; |
| |
| writel(tmp, &emi_regs_p->ack); |
| |
| for (cs = 0; cs < CONFIG_SYS_MAX_FLASH_BANKS; cs++) { |
| writel(p->tap, &emi_regs_p->bank_regs[cs].tap); |
| writel(p->tsdp, &emi_regs_p->bank_regs[cs].tsdp); |
| writel(p->tdpw, &emi_regs_p->bank_regs[cs].tdpw); |
| writel(p->tdpr, &emi_regs_p->bank_regs[cs].tdpr); |
| writel(p->tdcs, &emi_regs_p->bank_regs[cs].tdcs); |
| writel(EMI_CNTL_ENBBYTERW | ((val & 0x18) >> 3), |
| &emi_regs_p->bank_regs[cs].control); |
| } |
| } |
| #endif |
| |
| int spear_board_init(ulong mach_type) |
| { |
| gd->bd->bi_arch_number = mach_type; |
| |
| /* adress of boot parameters */ |
| gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR; |
| |
| #ifdef CONFIG_SPEAR_EMI |
| spear_emi_init(); |
| #endif |
| return 0; |
| } |
| |
| #if defined(CONFIG_CMD_NET) |
| 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; |
| } |
| #endif |
| |
| int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
| { |
| void (*sram_setfreq) (unsigned int, unsigned int); |
| unsigned int frequency; |
| #if defined(CONFIG_CMD_NET) |
| unsigned char mac[6]; |
| #endif |
| |
| if ((argc > 3) || (argc < 2)) |
| return cmd_usage(cmdtp); |
| |
| 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); |
| } else { |
| sram_setfreq(DDR, frequency); |
| printf("DDR frequency changed to %u\n", frequency); |
| } |
| |
| return 0; |
| |
| #if defined(CONFIG_CMD_NET) |
| } else if (!strcmp(argv[1], "ethaddr")) { |
| |
| u32 reg; |
| char *e, *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; |
| #endif |
| } else if (!strcmp(argv[1], "print")) { |
| #if defined(CONFIG_CMD_NET) |
| if (!i2c_read_mac(mac)) { |
| printf("Ethaddr (from i2c mem) = %pM\n", mac); |
| } else { |
| printf("Ethaddr (from i2c mem) = Not set\n"); |
| } |
| #endif |
| return 0; |
| } |
| |
| return cmd_usage(cmdtp); |
| } |
| |
| U_BOOT_CMD(chip_config, 3, 1, do_chip_config, |
| "configure chip", |
| "chip_config cpufreq/ddrfreq frequency\n" |
| #if defined(CONFIG_CMD_NET) |
| "chip_config ethaddr XX:XX:XX:XX:XX:XX\n" |
| #endif |
| "chip_config print"); |