Set Write Protection GPIO as input. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
266 lines
6.6 KiB
C
266 lines
6.6 KiB
C
/*
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* Copyright (C) 2012, Stefano Babic <sbabic@denx.de>
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*
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* Based on flea3.c and mx35pdk.c
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/errno.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/crm_regs.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/mx35_pins.h>
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#include <asm/arch/iomux.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <fsl_pmic.h>
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#include <mc13892.h>
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#include <mmc.h>
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#include <fsl_esdhc.h>
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#include <linux/types.h>
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#include <asm/gpio.h>
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#include <asm/arch/sys_proto.h>
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#include <netdev.h>
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#include <spl.h>
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#define CCM_CCMR_CONFIG 0x003F4208
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#define ESDCTL_DDR2_CONFIG 0x007FFC3F
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/* For MMC */
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#define GPIO_MMC_CD 7
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#define GPIO_MMC_WP 8
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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gd->ram_size = get_ram_size((long *)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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static void board_setup_sdram(void)
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{
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struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
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/* Initialize with default values both CSD0/1 */
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writel(0x2000, &esdc->esdctl0);
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writel(0x2000, &esdc->esdctl1);
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mx3_setup_sdram_bank(CSD0_BASE_ADDR, ESDCTL_DDR2_CONFIG,
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13, 10, 2, 0x8080);
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}
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static void setup_iomux_fec(void)
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{
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/* setup pins for FEC */
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mxc_request_iomux(MX35_PIN_FEC_TX_CLK, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_RX_CLK, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_RX_DV, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_COL, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_RDATA0, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_TDATA0, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_TX_EN, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_MDC, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_MDIO, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_TX_ERR, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_RX_ERR, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_CRS, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_RDATA1, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_TDATA1, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_RDATA2, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_TDATA2, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_RDATA3, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_FEC_TDATA3, MUX_CONFIG_FUNC);
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}
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int woodburn_init(void)
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{
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struct ccm_regs *ccm =
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(struct ccm_regs *)IMX_CCM_BASE;
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/* initialize PLL and clock configuration */
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writel(CCM_CCMR_CONFIG, &ccm->ccmr);
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/* Set-up RAM */
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board_setup_sdram();
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/* enable clocks */
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writel(readl(&ccm->cgr0) |
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MXC_CCM_CGR0_EMI_MASK |
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MXC_CCM_CGR0_EDIO_MASK |
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MXC_CCM_CGR0_EPIT1_MASK,
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&ccm->cgr0);
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writel(readl(&ccm->cgr1) |
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MXC_CCM_CGR1_FEC_MASK |
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MXC_CCM_CGR1_GPIO1_MASK |
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MXC_CCM_CGR1_GPIO2_MASK |
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MXC_CCM_CGR1_GPIO3_MASK |
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MXC_CCM_CGR1_I2C1_MASK |
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MXC_CCM_CGR1_I2C2_MASK |
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MXC_CCM_CGR1_I2C3_MASK,
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&ccm->cgr1);
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/* Set-up NAND */
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__raw_writel(readl(&ccm->rcsr) | MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);
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/* Set pinmux for the required peripherals */
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setup_iomux_fec();
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/* setup GPIO1_4 FEC_ENABLE signal */
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mxc_request_iomux(MX35_PIN_SCKR, MUX_CONFIG_ALT5);
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gpio_direction_output(4, 1);
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mxc_request_iomux(MX35_PIN_HCKT, MUX_CONFIG_ALT5);
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gpio_direction_output(9, 1);
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return 0;
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}
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#if defined(CONFIG_SPL_BUILD)
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void board_init_f(ulong dummy)
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{
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/* Set the stack pointer. */
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asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK));
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/* Initialize MUX and SDRAM */
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woodburn_init();
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/* Clear the BSS. */
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memset(__bss_start, 0, __bss_end__ - __bss_start);
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/* Set global data pointer. */
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gd = &gdata;
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preloader_console_init();
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timer_init();
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board_init_r(NULL, 0);
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}
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void spl_board_init(void)
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{
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}
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#endif
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/* Booting from NOR in external mode */
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int board_early_init_f(void)
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{
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return woodburn_init();
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}
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int board_init(void)
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{
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struct pmic *p;
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u32 val;
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int ret;
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/* address of boot parameters */
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gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
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ret = pmic_init(I2C_PMIC);
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if (ret)
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return ret;
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p = pmic_get("FSL_PMIC");
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/*
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* Set switchers in Auto in NORMAL mode & STANDBY mode
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* Setup the switcher mode for SW1 & SW2
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*/
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pmic_reg_read(p, REG_SW_4, &val);
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val = (val & ~((SWMODE_MASK << SWMODE1_SHIFT) |
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(SWMODE_MASK << SWMODE2_SHIFT)));
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val |= (SWMODE_AUTO_AUTO << SWMODE1_SHIFT) |
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(SWMODE_AUTO_AUTO << SWMODE2_SHIFT);
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/* Set SWILIMB */
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val |= (1 << 22);
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pmic_reg_write(p, REG_SW_4, val);
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/* Setup the switcher mode for SW3 & SW4 */
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pmic_reg_read(p, REG_SW_5, &val);
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val &= ~((SWMODE_MASK << SWMODE4_SHIFT) |
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(SWMODE_MASK << SWMODE3_SHIFT));
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val |= (SWMODE_AUTO_AUTO << SWMODE4_SHIFT) |
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(SWMODE_AUTO_AUTO << SWMODE3_SHIFT);
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pmic_reg_write(p, REG_SW_5, val);
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/* Set VGEN1 to 3.15V */
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pmic_reg_read(p, REG_SETTING_0, &val);
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val &= ~(VGEN1_MASK);
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val |= VGEN1_3_15;
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pmic_reg_write(p, REG_SETTING_0, val);
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pmic_reg_read(p, REG_MODE_0, &val);
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val |= VGEN1EN;
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pmic_reg_write(p, REG_MODE_0, val);
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udelay(2000);
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return 0;
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}
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#if defined(CONFIG_FSL_ESDHC)
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struct fsl_esdhc_cfg esdhc_cfg = {MMC_SDHC1_BASE_ADDR};
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int board_mmc_init(bd_t *bis)
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{
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/* configure pins for SDHC1 only */
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mxc_request_iomux(MX35_PIN_SD1_CMD, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_SD1_CLK, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_SD1_DATA0, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_SD1_DATA1, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_SD1_DATA2, MUX_CONFIG_FUNC);
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mxc_request_iomux(MX35_PIN_SD1_DATA3, MUX_CONFIG_FUNC);
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/* MMC Card Detect on GPIO1_7 */
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mxc_request_iomux(MX35_PIN_SCKT, MUX_CONFIG_ALT5);
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mxc_iomux_set_input(MUX_IN_GPIO1_IN_7, 0x1);
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gpio_direction_input(GPIO_MMC_CD);
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/* MMC Write Protection on GPIO1_8 */
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mxc_request_iomux(MX35_PIN_FST, MUX_CONFIG_ALT5);
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mxc_iomux_set_input(MUX_IN_GPIO1_IN_8, 0x1);
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gpio_direction_input(GPIO_MMC_WP);
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esdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC1_CLK);
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return fsl_esdhc_initialize(bis, &esdhc_cfg);
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}
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int board_mmc_getcd(struct mmc *mmc)
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{
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return !gpio_get_value(GPIO_MMC_CD);
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}
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#endif
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u32 get_board_rev(void)
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{
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int rev = 0;
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return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
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}
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