1 // SPDX-License-Identifier: GPL-2.0+
4 * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
14 #include <asm/global_data.h>
15 #include <linux/mtd/st_smi.h>
17 #include <asm/arch/hardware.h>
18 #include <asm/arch/spr_emi.h>
19 #include <asm/arch/spr_defs.h>
23 #define SRAM_REL 0xD2801000
25 DECLARE_GLOBAL_DATA_PTR;
27 #if defined(CONFIG_CMD_NET)
28 static int i2c_read_mac(uchar *buffer);
33 /* Store complete RAM size and return */
34 gd->ram_size = get_ram_size(PHYS_SDRAM_1, PHYS_SDRAM_1_MAXSIZE);
39 int dram_init_banksize(void)
41 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
42 gd->bd->bi_dram[0].size = gd->ram_size;
47 int board_early_init_f()
49 #if defined(CONFIG_ST_SMI)
56 #if defined(CONFIG_CMD_NET)
59 if (!eth_env_get_enetaddr("ethaddr", mac_id) && !i2c_read_mac(mac_id))
60 eth_env_set_enetaddr("ethaddr", mac_id);
62 env_set("verify", "n");
64 #if defined(CONFIG_SPEAR_USBTTY)
65 env_set("stdin", "usbtty");
66 env_set("stdout", "usbtty");
67 env_set("stderr", "usbtty");
69 #ifndef CONFIG_SYS_NO_DCACHE
76 #ifdef CONFIG_SPEAR_EMI
77 struct cust_emi_para {
85 /* EMI timing setting of m28w640hc of linux kernel */
86 const struct cust_emi_para emi_timing_m28w640hc = {
94 /* EMI timing setting of bootrom */
95 const struct cust_emi_para emi_timing_bootrom = {
103 void spear_emi_init(void)
105 const struct cust_emi_para *p = &emi_timing_m28w640hc;
106 struct emi_regs *emi_regs_p = (struct emi_regs *)CONFIG_SPEAR_EMIBASE;
108 unsigned int val, tmp;
110 val = readl(CONFIG_SPEAR_RASBASE);
112 if (val & EMI_ACKMSK)
117 writel(tmp, &emi_regs_p->ack);
119 for (cs = 0; cs < CONFIG_SYS_MAX_FLASH_BANKS; cs++) {
120 writel(p->tap, &emi_regs_p->bank_regs[cs].tap);
121 writel(p->tsdp, &emi_regs_p->bank_regs[cs].tsdp);
122 writel(p->tdpw, &emi_regs_p->bank_regs[cs].tdpw);
123 writel(p->tdpr, &emi_regs_p->bank_regs[cs].tdpr);
124 writel(p->tdcs, &emi_regs_p->bank_regs[cs].tdcs);
125 writel(EMI_CNTL_ENBBYTERW | ((val & 0x18) >> 3),
126 &emi_regs_p->bank_regs[cs].control);
131 int spear_board_init(ulong mach_type)
133 gd->bd->bi_arch_number = mach_type;
135 /* adress of boot parameters */
136 gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR;
138 #ifdef CONFIG_SPEAR_EMI
144 #if defined(CONFIG_CMD_NET)
145 static int i2c_read_mac(uchar *buffer)
149 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
151 /* Check if mac in i2c memory is valid */
152 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
153 /* Valid mac address is saved in i2c eeprom */
154 i2c_read(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, buffer, MAC_LEN);
161 static int write_mac(uchar *mac)
165 buf[0] = (u8)MAGIC_BYTE0;
166 buf[1] = (u8)MAGIC_BYTE1;
167 i2c_write(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
169 buf[0] = (u8)~MAGIC_BYTE0;
170 buf[1] = (u8)~MAGIC_BYTE1;
172 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
174 /* check if valid MAC address is saved in I2C EEPROM or not? */
175 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
176 i2c_write(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, mac, MAC_LEN);
177 puts("I2C EEPROM written with mac address \n");
181 puts("I2C EEPROM writing failed\n");
186 int do_chip_config(struct cmd_tbl *cmdtp, int flag, int argc,
189 void (*sram_setfreq) (unsigned int, unsigned int);
190 unsigned int frequency;
191 #if defined(CONFIG_CMD_NET)
192 unsigned char mac[6];
195 if ((argc > 3) || (argc < 2))
196 return cmd_usage(cmdtp);
198 if ((!strcmp(argv[1], "cpufreq")) || (!strcmp(argv[1], "ddrfreq"))) {
200 frequency = simple_strtoul(argv[2], NULL, 0);
202 if (frequency > 333) {
203 printf("Frequency is limited to 333MHz\n");
207 sram_setfreq = memcpy((void *)SRAM_REL, setfreq, setfreq_sz);
209 if (!strcmp(argv[1], "cpufreq")) {
210 sram_setfreq(CPU, frequency);
211 printf("CPU frequency changed to %u\n", frequency);
213 sram_setfreq(DDR, frequency);
214 printf("DDR frequency changed to %u\n", frequency);
219 #if defined(CONFIG_CMD_NET)
220 } else if (!strcmp(argv[1], "ethaddr")) {
223 char *e, *s = argv[2];
224 for (reg = 0; reg < 6; ++reg) {
225 mac[reg] = s ? simple_strtoul(s, &e, 16) : 0;
227 s = (*e) ? e + 1 : e;
233 } else if (!strcmp(argv[1], "print")) {
234 #if defined(CONFIG_CMD_NET)
235 if (!i2c_read_mac(mac)) {
236 printf("Ethaddr (from i2c mem) = %pM\n", mac);
238 printf("Ethaddr (from i2c mem) = Not set\n");
244 return cmd_usage(cmdtp);
247 U_BOOT_CMD(chip_config, 3, 1, do_chip_config,
249 "chip_config cpufreq/ddrfreq frequency\n"
250 #if defined(CONFIG_CMD_NET)
251 "chip_config ethaddr XX:XX:XX:XX:XX:XX\n"
253 "chip_config print");