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 * const 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");