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264bbdd1 HV |
1 | /* |
2 | * Miscelaneous DaVinci functions. | |
3 | * | |
4 | * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net> | |
5 | * Copyright (C) 2008 Lyrtech <www.lyrtech.com> | |
6 | * Copyright (C) 2004 Texas Instruments. | |
7 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
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. | |
15 | * | |
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. | |
20 | * | |
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. | |
24 | */ | |
25 | ||
26 | #include <common.h> | |
27 | #include <i2c.h> | |
28 | #include <asm/arch/hardware.h> | |
29 | ||
30 | DECLARE_GLOBAL_DATA_PTR; | |
31 | ||
32 | int dram_init(void) | |
33 | { | |
34 | gd->bd->bi_dram[0].start = PHYS_SDRAM_1; | |
35 | gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; | |
36 | ||
37 | return(0); | |
38 | } | |
39 | ||
40 | static int dv_get_pllm_output(uint32_t pllm) | |
41 | { | |
6d0f6bcf | 42 | return (pllm + 1) * (CONFIG_SYS_HZ_CLOCK / 1000000); |
264bbdd1 HV |
43 | } |
44 | ||
45 | void dv_display_clk_infos(void) | |
46 | { | |
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); | |
50 | } | |
51 | ||
52 | /* Read ethernet MAC address from EEPROM for DVEVM compatible boards. | |
53 | * Returns 1 if found, 0 otherwise. | |
54 | */ | |
55 | int dvevm_read_mac_address(uint8_t *buf) | |
56 | { | |
6d0f6bcf | 57 | #ifdef CONFIG_SYS_I2C_EEPROM_ADDR |
264bbdd1 | 58 | /* Read MAC address. */ |
6d0f6bcf | 59 | if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00, CONFIG_SYS_I2C_EEPROM_ADDR_LEN, |
264bbdd1 HV |
60 | (uint8_t *) &buf[0], 6)) |
61 | goto i2cerr; | |
62 | ||
63 | /* Check that MAC address is not null. */ | |
64 | if (memcmp(buf, "\0\0\0\0\0\0", 6) == 0) | |
65 | goto err; | |
66 | ||
67 | return 1; /* Found */ | |
68 | ||
69 | i2cerr: | |
6d0f6bcf | 70 | printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR); |
264bbdd1 | 71 | err: |
6d0f6bcf | 72 | #endif /* CONFIG_SYS_I2C_EEPROM_ADDR */ |
264bbdd1 HV |
73 | |
74 | return 0; | |
75 | } | |
76 | ||
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. | |
80 | * | |
81 | * If there is no MAC address in the environment, then it will be initialized | |
82 | * (silently) from the value in the ROM. | |
83 | */ | |
84 | void dv_configure_mac_address(uint8_t *rom_enetaddr) | |
85 | { | |
86 | int i; | |
87 | u_int8_t env_enetaddr[6]; | |
88 | char *tmp = getenv("ethaddr"); | |
89 | char *end; | |
90 | ||
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; | |
95 | if (tmp) | |
96 | tmp = (*end) ? end+1 : end; | |
97 | } | |
98 | ||
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"); | |
112 | } | |
113 | if (!tmp) { | |
114 | char ethaddr[20]; | |
115 | ||
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", | |
123 | ethaddr); | |
124 | setenv("ethaddr", ethaddr); | |
125 | } | |
126 | } |