3 * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
5 * SPDX-License-Identifier: GPL-2.0+
12 #include <linux/mtd/st_smi.h>
14 #include <asm/arch/hardware.h>
15 #include <asm/arch/spr_emi.h>
16 #include <asm/arch/spr_defs.h>
20 #define SRAM_REL 0xD2801000
22 DECLARE_GLOBAL_DATA_PTR;
24 #if defined(CONFIG_CMD_NET)
25 static int i2c_read_mac(uchar *buffer);
30 /* Store complete RAM size and return */
31 gd->ram_size = get_ram_size(PHYS_SDRAM_1, PHYS_SDRAM_1_MAXSIZE);
36 void dram_init_banksize(void)
38 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
39 gd->bd->bi_dram[0].size = gd->ram_size;
42 int board_early_init_f()
44 #if defined(CONFIG_ST_SMI)
51 #if defined(CONFIG_CMD_NET)
54 if (!eth_getenv_enetaddr("ethaddr", mac_id) && !i2c_read_mac(mac_id))
55 eth_setenv_enetaddr("ethaddr", mac_id);
57 setenv("verify", "n");
59 #if defined(CONFIG_SPEAR_USBTTY)
60 setenv("stdin", "usbtty");
61 setenv("stdout", "usbtty");
62 setenv("stderr", "usbtty");
64 #ifndef CONFIG_SYS_NO_DCACHE
71 #ifdef CONFIG_SPEAR_EMI
72 struct cust_emi_para {
80 /* EMI timing setting of m28w640hc of linux kernel */
81 const struct cust_emi_para emi_timing_m28w640hc = {
89 /* EMI timing setting of bootrom */
90 const struct cust_emi_para emi_timing_bootrom = {
98 void spear_emi_init(void)
100 const struct cust_emi_para *p = &emi_timing_m28w640hc;
101 struct emi_regs *emi_regs_p = (struct emi_regs *)CONFIG_SPEAR_EMIBASE;
103 unsigned int val, tmp;
105 val = readl(CONFIG_SPEAR_RASBASE);
107 if (val & EMI_ACKMSK)
112 writel(tmp, &emi_regs_p->ack);
114 for (cs = 0; cs < CONFIG_SYS_MAX_FLASH_BANKS; cs++) {
115 writel(p->tap, &emi_regs_p->bank_regs[cs].tap);
116 writel(p->tsdp, &emi_regs_p->bank_regs[cs].tsdp);
117 writel(p->tdpw, &emi_regs_p->bank_regs[cs].tdpw);
118 writel(p->tdpr, &emi_regs_p->bank_regs[cs].tdpr);
119 writel(p->tdcs, &emi_regs_p->bank_regs[cs].tdcs);
120 writel(EMI_CNTL_ENBBYTERW | ((val & 0x18) >> 3),
121 &emi_regs_p->bank_regs[cs].control);
126 int spear_board_init(ulong mach_type)
128 gd->bd->bi_arch_number = mach_type;
130 /* adress of boot parameters */
131 gd->bd->bi_boot_params = CONFIG_BOOT_PARAMS_ADDR;
133 #ifdef CONFIG_SPEAR_EMI
139 #if defined(CONFIG_CMD_NET)
140 static int i2c_read_mac(uchar *buffer)
144 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
146 /* Check if mac in i2c memory is valid */
147 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
148 /* Valid mac address is saved in i2c eeprom */
149 i2c_read(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, buffer, MAC_LEN);
156 static int write_mac(uchar *mac)
160 buf[0] = (u8)MAGIC_BYTE0;
161 buf[1] = (u8)MAGIC_BYTE1;
162 i2c_write(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
164 buf[0] = (u8)~MAGIC_BYTE0;
165 buf[1] = (u8)~MAGIC_BYTE1;
167 i2c_read(CONFIG_I2C_CHIPADDRESS, MAGIC_OFF, 1, buf, MAGIC_LEN);
169 /* check if valid MAC address is saved in I2C EEPROM or not? */
170 if ((buf[0] == MAGIC_BYTE0) && (buf[1] == MAGIC_BYTE1)) {
171 i2c_write(CONFIG_I2C_CHIPADDRESS, MAC_OFF, 1, mac, MAC_LEN);
172 puts("I2C EEPROM written with mac address \n");
176 puts("I2C EEPROM writing failed\n");
181 int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
183 void (*sram_setfreq) (unsigned int, unsigned int);
184 unsigned int frequency;
185 #if defined(CONFIG_CMD_NET)
186 unsigned char mac[6];
189 if ((argc > 3) || (argc < 2))
190 return cmd_usage(cmdtp);
192 if ((!strcmp(argv[1], "cpufreq")) || (!strcmp(argv[1], "ddrfreq"))) {
194 frequency = simple_strtoul(argv[2], NULL, 0);
196 if (frequency > 333) {
197 printf("Frequency is limited to 333MHz\n");
201 sram_setfreq = memcpy((void *)SRAM_REL, setfreq, setfreq_sz);
203 if (!strcmp(argv[1], "cpufreq")) {
204 sram_setfreq(CPU, frequency);
205 printf("CPU frequency changed to %u\n", frequency);
207 sram_setfreq(DDR, frequency);
208 printf("DDR frequency changed to %u\n", frequency);
213 #if defined(CONFIG_CMD_NET)
214 } else if (!strcmp(argv[1], "ethaddr")) {
217 char *e, *s = argv[2];
218 for (reg = 0; reg < 6; ++reg) {
219 mac[reg] = s ? simple_strtoul(s, &e, 16) : 0;
221 s = (*e) ? e + 1 : e;
227 } else if (!strcmp(argv[1], "print")) {
228 #if defined(CONFIG_CMD_NET)
229 if (!i2c_read_mac(mac)) {
230 printf("Ethaddr (from i2c mem) = %pM\n", mac);
232 printf("Ethaddr (from i2c mem) = Not set\n");
238 return cmd_usage(cmdtp);
241 U_BOOT_CMD(chip_config, 3, 1, do_chip_config,
243 "chip_config cpufreq/ddrfreq frequency\n"
244 #if defined(CONFIG_CMD_NET)
245 "chip_config ethaddr XX:XX:XX:XX:XX:XX\n"
247 "chip_config print");