2 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
4 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
5 * Copyright (C) 2008 Philip Balister, OpenSDR <philip@opensdr.com>
7 * Parts are shamelessly stolen from various TI sources, original copyright
10 * Copyright (C) 2004 Texas Instruments.
12 * See file CREDITS for list of people who contributed to this
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 #include <asm/arch/hardware.h>
33 #include <asm/arch/davinci_misc.h>
35 #define DAVINCI_A3CR (0x01E00014) /* EMIF-A CS3 config register. */
36 #define DAVINCI_A3CR_VAL (0x3FFFFFFD) /* EMIF-A CS3 value for FPGA. */
38 #define INTEGRITY_SYSCFG_OFFSET 0x7E8
39 #define INTEGRITY_CHECKWORD_OFFSET 0x7F8
40 #define INTEGRITY_CHECKWORD_VALUE 0x10ADBEEF
42 DECLARE_GLOBAL_DATA_PTR;
46 /* arch number of the board */
47 gd->bd->bi_arch_number = MACH_TYPE_SFFSDR;
49 /* address of boot parameters */
50 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
52 davinci_errata_workarounds();
54 /* Power on required peripherals */
55 lpsc_on(DAVINCI_LPSC_GPIO);
57 #if !defined(CONFIG_SYS_USE_DSPLINK)
60 #endif /* CONFIG_SYS_USE_DSPLINK */
62 davinci_enable_uart0();
63 davinci_enable_emac();
66 lpsc_on(DAVINCI_LPSC_TIMER1);
72 /* Read ethernet MAC address from Integrity data structure inside EEPROM.
73 * Returns 1 if found, 0 otherwise.
75 static int sffsdr_read_mac_address(uint8_t *buf)
77 u_int32_t value, mac[2], address;
79 /* Read Integrity data structure checkword. */
80 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_CHECKWORD_OFFSET,
81 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
83 if (value != INTEGRITY_CHECKWORD_VALUE)
86 /* Read SYSCFG structure offset. */
87 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, INTEGRITY_SYSCFG_OFFSET,
88 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
90 address = 0x800 + (int) value; /* Address of SYSCFG structure. */
92 /* Read NET CONFIG structure offset. */
93 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
94 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
96 address = 0x800 + (int) value; /* Address of NET CONFIG structure. */
97 address += 12; /* Address of NET INTERFACE CONFIG structure. */
99 /* Read NET INTERFACE CONFIG 2 structure offset. */
100 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
101 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &value, 4))
103 address = 0x800 + 16 + (int) value; /* Address of NET INTERFACE
104 * CONFIG 2 structure. */
106 /* Read MAC address. */
107 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, address,
108 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &mac[0], 8))
111 buf[0] = mac[0] >> 24;
112 buf[1] = mac[0] >> 16;
113 buf[2] = mac[0] >> 8;
115 buf[4] = mac[1] >> 24;
116 buf[5] = mac[1] >> 16;
118 return 1; /* Found */
121 printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
125 /* Platform dependent initialisation. */
126 int misc_init_r(void)
129 uint8_t eeprom_enetaddr[6];
131 /* EMIF-A CS3 configuration for FPGA. */
132 REG(DAVINCI_A3CR) = DAVINCI_A3CR_VAL;
134 /* Configure I2C switch (PCA9543) to enable channel 0. */
135 i2cbuf = CONFIG_SYS_I2C_PCA9543_ENABLE_CH0;
136 if (i2c_write(CONFIG_SYS_I2C_PCA9543_ADDR, 0,
137 CONFIG_SYS_I2C_PCA9543_ADDR_LEN, &i2cbuf, 1)) {
138 printf("Write to MUX @ 0x%02x failed\n", CONFIG_SYS_I2C_PCA9543_ADDR);
142 /* Read Ethernet MAC address from EEPROM if available. */
143 if (sffsdr_read_mac_address(eeprom_enetaddr))
144 davinci_sync_env_enetaddr(eeprom_enetaddr);