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");
83 #ifdef CONFIG_SPEAR_EMI
84 struct cust_emi_para {
92 /* EMI timing setting of m28w640hc of linux kernel */
93 const struct cust_emi_para emi_timing_m28w640hc = {
101 /* EMI timing setting of bootrom */
102 const struct cust_emi_para emi_timing_bootrom = {
110 void spear_emi_init(void)
112 const struct cust_emi_para *p = &emi_timing_m28w640hc;
113 struct emi_regs *emi_regs_p = (struct emi_regs *)CONFIG_SPEAR_EMIBASE;
115 unsigned int val, tmp;
117 val = readl(CONFIG_SPEAR_RASBASE);
119 if (val & EMI_ACKMSK)
124 writel(tmp, &emi_regs_p->ack);
126 for (cs = 0; cs < CONFIG_SYS_MAX_FLASH_BANKS; cs++) {
127 writel(p->tap, &emi_regs_p->bank_regs[cs].tap);
128 writel(p->tsdp, &emi_regs_p->bank_regs[cs].tsdp);
129 writel(p->tdpw, &emi_regs_p->bank_regs[cs].tdpw);
130 writel(p->tdpr, &emi_regs_p->bank_regs[cs].tdpr);
131 writel(p->tdcs, &emi_regs_p->bank_regs[cs].tdcs);
132 writel(EMI_CNTL_ENBBYTERW | ((val & 0x18) >> 3),
133 &emi_regs_p->bank_regs[cs].control);
138 int spear_board_init(ulong mach_type)
140 gd->bd->bi_arch_number = mach_type;
142 /* adress of boot parameters */
143 gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR;
145 #ifdef CONFIG_SPEAR_EMI
151 #if defined(CONFIG_CMD_NET)
152 static int i2c_read_mac(uchar *buffer)
156 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
158 /* Check if mac in i2c memory is valid */
159 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
160 /* Valid mac address is saved in i2c eeprom */
161 i2c_read(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, buffer, MAC_LEN);
168 static int write_mac(uchar *mac)
172 buf[0] = (u8)MAGIC_BYTE0;
173 buf[1] = (u8)MAGIC_BYTE1;
174 i2c_write(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
176 buf[0] = (u8)~MAGIC_BYTE0;
177 buf[1] = (u8)~MAGIC_BYTE1;
179 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
181 /* check if valid MAC address is saved in I2C EEPROM or not? */
182 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
183 i2c_write(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, mac, MAC_LEN);
184 puts("I2C EEPROM written with mac address \n");
188 puts("I2C EEPROM writing failed\n");
193 int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
195 void (*sram_setfreq) (unsigned int, unsigned int);
196 unsigned int frequency;
197 #if defined(CONFIG_CMD_NET)
198 unsigned char mac[6];
201 if ((argc > 3) || (argc < 2))
202 return cmd_usage(cmdtp);
204 if ((!strcmp(argv[1], "cpufreq")) || (!strcmp(argv[1], "ddrfreq"))) {
206 frequency = simple_strtoul(argv[2], NULL, 0);
208 if (frequency > 333) {
209 printf("Frequency is limited to 333MHz\n");
213 sram_setfreq = memcpy((void *)SRAM_REL, setfreq, setfreq_sz);
215 if (!strcmp(argv[1], "cpufreq")) {
216 sram_setfreq(CPU, frequency);
217 printf("CPU frequency changed to %u\n", frequency);
219 sram_setfreq(DDR, frequency);
220 printf("DDR frequency changed to %u\n", frequency);
225 #if defined(CONFIG_CMD_NET)
226 } else if (!strcmp(argv[1], "ethaddr")) {
229 char *e, *s = argv[2];
230 for (reg = 0; reg < 6; ++reg) {
231 mac[reg] = s ? simple_strtoul(s, &e, 16) : 0;
233 s = (*e) ? e + 1 : e;
239 } else if (!strcmp(argv[1], "print")) {
240 #if defined(CONFIG_CMD_NET)
241 if (!i2c_read_mac(mac)) {
242 printf("Ethaddr (from i2c mem) = %pM\n", mac);
244 printf("Ethaddr (from i2c mem) = Not set\n");
250 return cmd_usage(cmdtp);
253 U_BOOT_CMD(chip_config, 3, 1, do_chip_config,
255 "chip_config cpufreq/ddrfreq frequency\n"
256 #if defined(CONFIG_CMD_NET)
257 "chip_config ethaddr XX:XX:XX:XX:XX:XX\n"
259 "chip_config print");