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https://xff.cz/git/u-boot/
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1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
/*
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* Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <netdev.h>
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/sys_proto.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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/* dram_init must store complete ramsize in gd->ram_size */
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gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1,
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PHYS_SDRAM_1_SIZE);
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return 0;
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}
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int board_early_init_f(void)
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{
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int i;
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/* CS0: Nor Flash */
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/*
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* CS0L and CS0A values are from the RedBoot sources by Freescale
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* and are also equal to those used by Sascha Hauer for the Phytec
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* i.MX31 board. CS0U is just a slightly optimized hardware default:
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* the only non-zero field "Wait State Control" is set to half the
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* default value.
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*/
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static const struct mxc_weimcs cs0 = {
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/* sp wp bcd bcs psz pme sync dol cnc wsc ew wws edc */
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CSCR_U(0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0),
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/* oea oen ebwa ebwn csa ebc dsz csn psr cre wrap csen */
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CSCR_L(1, 0, 0, 0, 0, 1, 5, 0, 0, 0, 1, 1),
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/* ebra ebrn rwa rwn mum lah lbn lba dww dct wwu age cnc2 fce*/
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CSCR_A(0, 0, 7, 2, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0)
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};
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mxc_setup_weimcs(0, &cs0);
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/* setup pins for UART1 */
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mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
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mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
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mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
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mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
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/* SPI2 */
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mx31_gpio_mux(MUX_CSPI2_SS2__CSPI2_SS2_B);
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mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
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mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
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mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
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mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
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mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
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mx31_gpio_mux(MUX_CSPI2_SS1__CSPI2_SS1_B);
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/* start SPI2 clock */
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__REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4);
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/* PBC setup */
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/* Enable UART transceivers also reset the Ethernet/external UART */
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readw(CS4_BASE + 4);
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writew(0x8023, CS4_BASE + 4);
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/* RedBoot also has an empty loop with 100000 iterations here -
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* clock doesn't run yet */
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for (i = 0; i < 100000; i++)
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;
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/* Clear the reset, toggle the LEDs */
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writew(0xDF, CS4_BASE + 6);
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/* clock still doesn't run */
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for (i = 0; i < 100000; i++)
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;
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/* See 1.5.4 in IMX31ADSE_PERI_BUS_CNTRL_CPLD_RM.pdf */
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readb(CS4_BASE + 8);
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readb(CS4_BASE + 7);
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readb(CS4_BASE + 8);
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readb(CS4_BASE + 7);
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return 0;
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}
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int board_init(void)
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{
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gd->bd->bi_boot_params = 0x80000100; /* adress of boot parameters */
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return 0;
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}
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int checkboard(void)
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{
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printf("Board: MX31ADS\n");
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return 0;
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}
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#ifdef CONFIG_CMD_NET
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int board_eth_init(bd_t *bis)
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{
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int rc = 0;
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#ifdef CONFIG_CS8900
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rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
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#endif
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return rc;
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}
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#endif
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