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,
29 #include <asm/arch/hardware.h>
30 #include <asm/arch/spr_emi.h>
31 #include <asm/arch/spr_xloader_table.h>
32 #include <asm/arch/spr_defs.h>
36 #define SRAM_REL 0xD2801000
38 DECLARE_GLOBAL_DATA_PTR;
39 static struct chip_data chip_data;
43 struct xloader_table *xloader_tb =
44 (struct xloader_table *)XLOADER_TABLE_ADDRESS;
45 struct xloader_table_1_1 *table_1_1;
46 struct xloader_table_1_2 *table_1_2;
47 struct chip_data *chip = &chip_data;
49 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
50 gd->bd->bi_dram[0].size = get_ram_size(PHYS_SDRAM_1,
51 PHYS_SDRAM_1_MAXSIZE);
53 if (XLOADER_TABLE_VERSION_1_1 == xloader_tb->table_version) {
54 table_1_1 = &xloader_tb->table.table_1_1;
55 chip->dramfreq = table_1_1->ddrfreq;
56 chip->dramtype = table_1_1->ddrtype;
58 } else if (XLOADER_TABLE_VERSION_1_2 == xloader_tb->table_version) {
59 table_1_2 = &xloader_tb->table.table_1_2;
60 chip->dramfreq = table_1_2->ddrfreq;
61 chip->dramtype = table_1_2->ddrtype;
71 #if defined(CONFIG_CMD_NET)
74 if (!eth_getenv_enetaddr("ethaddr", mac_id) && !i2c_read_mac(mac_id))
75 eth_setenv_enetaddr("ethaddr", mac_id);
77 setenv("verify", "n");
79 #if defined(CONFIG_SPEAR_USBTTY)
80 setenv("stdin", "usbtty");
81 setenv("stdout", "usbtty");
82 setenv("stderr", "usbtty");
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 struct xloader_table *xloader_tb =
145 (struct xloader_table *)XLOADER_TABLE_ADDRESS;
146 struct xloader_table_1_2 *table_1_2;
147 struct chip_data *chip = &chip_data;
149 gd->bd->bi_arch_number = mach_type;
151 /* adress of boot parameters */
152 gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR;
154 /* CPU is initialized to work at 333MHz in Xloader */
157 if (XLOADER_TABLE_VERSION_1_2 == xloader_tb->table_version) {
158 table_1_2 = &xloader_tb->table.table_1_2;
159 memcpy(chip->version, table_1_2->version,
160 sizeof(chip->version));
163 #ifdef CONFIG_SPEAR_EMI
169 static int i2c_read_mac(uchar *buffer)
173 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
175 /* Check if mac in i2c memory is valid */
176 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
177 /* Valid mac address is saved in i2c eeprom */
178 i2c_read(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, buffer, MAC_LEN);
185 static int write_mac(uchar *mac)
189 buf[0] = (u8)MAGIC_BYTE0;
190 buf[1] = (u8)MAGIC_BYTE1;
191 i2c_write(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
193 buf[0] = (u8)~MAGIC_BYTE0;
194 buf[1] = (u8)~MAGIC_BYTE1;
196 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
198 /* check if valid MAC address is saved in I2C EEPROM or not? */
199 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
200 i2c_write(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, mac, MAC_LEN);
201 puts("I2C EEPROM written with mac address \n");
205 puts("I2C EEPROM writing failed \n");
209 int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
211 void (*sram_setfreq) (unsigned int, unsigned int);
212 struct chip_data *chip = &chip_data;
213 unsigned char mac[6];
214 unsigned int reg, frequency;
218 if ((argc > 3) || (argc < 2)) {
223 if ((!strcmp(argv[1], "cpufreq")) || (!strcmp(argv[1], "ddrfreq"))) {
225 frequency = simple_strtoul(argv[2], NULL, 0);
227 if (frequency > 333) {
228 printf("Frequency is limited to 333MHz\n");
232 sram_setfreq = memcpy((void *)SRAM_REL, setfreq, setfreq_sz);
234 if (!strcmp(argv[1], "cpufreq")) {
235 sram_setfreq(CPU, frequency);
236 printf("CPU frequency changed to %u\n", frequency);
238 chip->cpufreq = frequency;
240 sram_setfreq(DDR, frequency);
241 printf("DDR frequency changed to %u\n", frequency);
243 chip->dramfreq = frequency;
247 } else if (!strcmp(argv[1], "ethaddr")) {
250 for (reg = 0; reg < 6; ++reg) {
251 mac[reg] = s ? simple_strtoul(s, &e, 16) : 0;
253 s = (*e) ? e + 1 : e;
258 } else if (!strcmp(argv[1], "print")) {
260 if (chip->cpufreq == -1)
261 printf("CPU Freq = Not Known\n");
263 printf("CPU Freq = %d MHz\n", chip->cpufreq);
265 if (chip->dramfreq == -1)
266 printf("DDR Freq = Not Known\n");
268 printf("DDR Freq = %d MHz\n", chip->dramfreq);
270 if (chip->dramtype == DDRMOBILE)
271 printf("DDR Type = MOBILE\n");
272 else if (chip->dramtype == DDR2)
273 printf("DDR Type = DDR2\n");
275 printf("DDR Type = Not Known\n");
277 if (!i2c_read_mac(mac)) {
278 sprintf(i2c_mac, "%pM", mac);
279 printf("Ethaddr (from i2c mem) = %s\n", i2c_mac);
281 printf("Ethaddr (from i2c mem) = Not set\n");
284 printf("Xloader Rev = %s\n", chip->version);
293 U_BOOT_CMD(chip_config, 3, 1, do_chip_config,
295 "chip_config cpufreq/ddrfreq frequency\n"
296 "chip_config print");