2 * Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #include <asm/arch/mx31.h>
27 #include <asm/arch/mx31-regs.h>
29 DECLARE_GLOBAL_DATA_PTR;
33 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
34 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
45 * CS0L and CS0A values are from the RedBoot sources by Freescale
46 * and are also equal to those used by Sascha Hauer for the Phytec
47 * i.MX31 board. CS0U is just a slightly optimized hardware default:
48 * the only non-zero field "Wait State Control" is set to half the
51 __REG(CSCR_U(0)) = 0x00000f00;
52 __REG(CSCR_L(0)) = 0x10000D03;
53 __REG(CSCR_A(0)) = 0x00720900;
55 /* setup pins for UART1 */
56 mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
57 mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
58 mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
59 mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
62 mx31_gpio_mux(MUX_CSPI2_SS2__CSPI2_SS2_B);
63 mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
64 mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
65 mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
66 mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
67 mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
68 mx31_gpio_mux(MUX_CSPI2_SS1__CSPI2_SS1_B);
70 /* start SPI2 clock */
71 __REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4);
74 /* Enable UART transceivers also reset the Ethernet/external UART */
77 writew(0x8023, CS4_BASE + 4);
79 /* RedBoot also has an empty loop with 100000 iterations here -
80 * clock doesn't run yet */
81 for (i = 0; i < 100000; i++)
84 /* Clear the reset, toggle the LEDs */
85 writew(0xDF, CS4_BASE + 6);
87 /* clock still doesn't run */
88 for (i = 0; i < 100000; i++)
91 /* See 1.5.4 in IMX31ADSE_PERI_BUS_CNTRL_CPLD_RM.pdf */
97 gd->bd->bi_arch_number = MACH_TYPE_MX31ADS; /* board id for linux */
98 gd->bd->bi_boot_params = 0x80000100; /* adress of boot parameters */
103 int checkboard (void)
105 printf("Board: MX31ADS\n");
109 #ifdef CONFIG_CMD_NET
110 int board_eth_init(bd_t *bis)
114 rc = cs8900_initialize(0, CONFIG_CS8900_BASE);