2 * Miscelaneous DaVinci functions.
4 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
5 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
6 * Copyright (C) 2004 Texas Instruments.
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <asm/arch/hardware.h>
30 DECLARE_GLOBAL_DATA_PTR
;
34 gd
->bd
->bi_dram
[0].start
= PHYS_SDRAM_1
;
35 gd
->bd
->bi_dram
[0].size
= PHYS_SDRAM_1_SIZE
;
40 static int dv_get_pllm_output(uint32_t pllm
)
42 return (pllm
+ 1) * (CONFIG_SYS_HZ_CLOCK
/ 1000000);
45 void dv_display_clk_infos(void)
47 printf("ARM Clock: %dMHz\n", dv_get_pllm_output(REG(PLL1_PLLM
)) / 2);
48 printf("DDR Clock: %dMHz\n", dv_get_pllm_output(REG(PLL2_PLLM
)) /
49 ((REG(PLL2_DIV2
) & 0x1f) + 1) / 2);
52 /* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
53 * Returns 1 if found, 0 otherwise.
55 int dvevm_read_mac_address(uint8_t *buf
)
57 #ifdef CONFIG_SYS_I2C_EEPROM_ADDR
58 /* Read MAC address. */
59 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR
, 0x7F00, CONFIG_SYS_I2C_EEPROM_ADDR_LEN
,
60 (uint8_t *) &buf
[0], 6))
63 /* Check that MAC address is not null. */
64 if (memcmp(buf
, "\0\0\0\0\0\0", 6) == 0)
70 printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR
);
72 #endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
77 /* If there is a MAC address in the environment, and if it is not identical to
78 * the MAC address in the ROM, then a warning is printed and the MAC address
79 * from the environment is used.
81 * If there is no MAC address in the environment, then it will be initialized
82 * (silently) from the value in the ROM.
84 void dv_configure_mac_address(uint8_t *rom_enetaddr
)
87 u_int8_t env_enetaddr
[6];
88 char *tmp
= getenv("ethaddr");
91 /* Read Ethernet MAC address from the U-Boot environment.
92 * If it is not defined, env_enetaddr[] will be cleared. */
93 for (i
= 0; i
< 6; i
++) {
94 env_enetaddr
[i
] = tmp
? simple_strtoul(tmp
, &end
, 16) : 0;
96 tmp
= (*end
) ? end
+1 : end
;
99 /* Check if ROM and U-Boot environment MAC addresses match. */
100 if (memcmp(env_enetaddr
, "\0\0\0\0\0\0", 6) != 0 &&
101 memcmp(env_enetaddr
, rom_enetaddr
, 6) != 0) {
102 printf("Warning: MAC addresses don't match:\n");
103 printf(" ROM MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n",
104 rom_enetaddr
[0], rom_enetaddr
[1],
105 rom_enetaddr
[2], rom_enetaddr
[3],
106 rom_enetaddr
[4], rom_enetaddr
[5]);
107 printf(" \"ethaddr\" value: %02X:%02X:%02X:%02X:%02X:%02X\n",
108 env_enetaddr
[0], env_enetaddr
[1],
109 env_enetaddr
[2], env_enetaddr
[3],
110 env_enetaddr
[4], env_enetaddr
[5]) ;
111 debug("### Using MAC address from environment\n");
116 /* There is no MAC address in the environment, so we initialize
117 * it from the value in the ROM. */
118 sprintf(ethaddr
, "%02X:%02X:%02X:%02X:%02X:%02X",
119 rom_enetaddr
[0], rom_enetaddr
[1],
120 rom_enetaddr
[2], rom_enetaddr
[3],
121 rom_enetaddr
[4], rom_enetaddr
[5]) ;
122 debug("### Setting environment from ROM MAC address = \"%s\"\n",
124 setenv("ethaddr", ethaddr
);