3 * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #include <linux/mtd/st_smi.h>
30 #include <asm/arch/hardware.h>
31 #include <asm/arch/spr_emi.h>
32 #include <asm/arch/spr_defs.h>
36 #define SRAM_REL 0xD2801000
38 DECLARE_GLOBAL_DATA_PTR;
40 #if defined(CONFIG_CMD_NET)
41 static int i2c_read_mac(uchar *buffer);
46 /* Store complete RAM size and return */
47 gd->ram_size = get_ram_size(PHYS_SDRAM_1, PHYS_SDRAM_1_MAXSIZE);
52 void dram_init_banksize(void)
54 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
55 gd->bd->bi_dram[0].size = gd->ram_size;
58 int board_early_init_f()
60 #if defined(CONFIG_ST_SMI)
67 #if defined(CONFIG_CMD_NET)
70 if (!eth_getenv_enetaddr("ethaddr", mac_id) && !i2c_read_mac(mac_id))
71 eth_setenv_enetaddr("ethaddr", mac_id);
73 setenv("verify", "n");
75 #if defined(CONFIG_SPEAR_USBTTY)
76 setenv("stdin", "usbtty");
77 setenv("stdout", "usbtty");
78 setenv("stderr", "usbtty");
80 #ifndef CONFIG_SYS_NO_DCACHE
87 #ifdef CONFIG_SPEAR_EMI
88 struct cust_emi_para {
96 /* EMI timing setting of m28w640hc of linux kernel */
97 const struct cust_emi_para emi_timing_m28w640hc = {
105 /* EMI timing setting of bootrom */
106 const struct cust_emi_para emi_timing_bootrom = {
114 void spear_emi_init(void)
116 const struct cust_emi_para *p = &emi_timing_m28w640hc;
117 struct emi_regs *emi_regs_p = (struct emi_regs *)CONFIG_SPEAR_EMIBASE;
119 unsigned int val, tmp;
121 val = readl(CONFIG_SPEAR_RASBASE);
123 if (val & EMI_ACKMSK)
128 writel(tmp, &emi_regs_p->ack);
130 for (cs = 0; cs < CONFIG_SYS_MAX_FLASH_BANKS; cs++) {
131 writel(p->tap, &emi_regs_p->bank_regs[cs].tap);
132 writel(p->tsdp, &emi_regs_p->bank_regs[cs].tsdp);
133 writel(p->tdpw, &emi_regs_p->bank_regs[cs].tdpw);
134 writel(p->tdpr, &emi_regs_p->bank_regs[cs].tdpr);
135 writel(p->tdcs, &emi_regs_p->bank_regs[cs].tdcs);
136 writel(EMI_CNTL_ENBBYTERW | ((val & 0x18) >> 3),
137 &emi_regs_p->bank_regs[cs].control);
142 int spear_board_init(ulong mach_type)
144 gd->bd->bi_arch_number = mach_type;
146 /* adress of boot parameters */
147 gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR;
149 #ifdef CONFIG_SPEAR_EMI
155 #if defined(CONFIG_CMD_NET)
156 static int i2c_read_mac(uchar *buffer)
160 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
162 /* Check if mac in i2c memory is valid */
163 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
164 /* Valid mac address is saved in i2c eeprom */
165 i2c_read(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, buffer, MAC_LEN);
172 static int write_mac(uchar *mac)
176 buf[0] = (u8)MAGIC_BYTE0;
177 buf[1] = (u8)MAGIC_BYTE1;
178 i2c_write(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
180 buf[0] = (u8)~MAGIC_BYTE0;
181 buf[1] = (u8)~MAGIC_BYTE1;
183 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
185 /* check if valid MAC address is saved in I2C EEPROM or not? */
186 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
187 i2c_write(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, mac, MAC_LEN);
188 puts("I2C EEPROM written with mac address \n");
192 puts("I2C EEPROM writing failed\n");
197 int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
199 void (*sram_setfreq) (unsigned int, unsigned int);
200 unsigned int frequency;
201 #if defined(CONFIG_CMD_NET)
202 unsigned char mac[6];
205 if ((argc > 3) || (argc < 2))
206 return cmd_usage(cmdtp);
208 if ((!strcmp(argv[1], "cpufreq")) || (!strcmp(argv[1], "ddrfreq"))) {
210 frequency = simple_strtoul(argv[2], NULL, 0);
212 if (frequency > 333) {
213 printf("Frequency is limited to 333MHz\n");
217 sram_setfreq = memcpy((void *)SRAM_REL, setfreq, setfreq_sz);
219 if (!strcmp(argv[1], "cpufreq")) {
220 sram_setfreq(CPU, frequency);
221 printf("CPU frequency changed to %u\n", frequency);
223 sram_setfreq(DDR, frequency);
224 printf("DDR frequency changed to %u\n", frequency);
229 #if defined(CONFIG_CMD_NET)
230 } else if (!strcmp(argv[1], "ethaddr")) {
233 char *e, *s = argv[2];
234 for (reg = 0; reg < 6; ++reg) {
235 mac[reg] = s ? simple_strtoul(s, &e, 16) : 0;
237 s = (*e) ? e + 1 : e;
243 } else if (!strcmp(argv[1], "print")) {
244 #if defined(CONFIG_CMD_NET)
245 if (!i2c_read_mac(mac)) {
246 printf("Ethaddr (from i2c mem) = %pM\n", mac);
248 printf("Ethaddr (from i2c mem) = Not set\n");
254 return cmd_usage(cmdtp);
257 U_BOOT_CMD(chip_config, 3, 1, do_chip_config,
259 "chip_config cpufreq/ddrfreq frequency\n"
260 #if defined(CONFIG_CMD_NET)
261 "chip_config ethaddr XX:XX:XX:XX:XX:XX\n"
263 "chip_config print");