board/CarMediaLab/flea3/flea3.c

   1 /*
   2  * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
   3  *
   4  * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
   5  *
   6  * Copyright (C) 2011, Stefano Babic <sbabic@denx.de>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <common.h>
  12 #include <asm/io.h>
  13 #include <linux/errno.h>
  14 #include <asm/arch/imx-regs.h>
  15 #include <asm/arch/crm_regs.h>
  16 #include <asm/arch/iomux-mx35.h>
  17 #include <i2c.h>
  18 #include <linux/types.h>
  19 #include <asm/gpio.h>
  20 #include <asm/arch/sys_proto.h>
  21 #include <netdev.h>
  22 #include <fdt_support.h>
  23 #include <mtd_node.h>
  24 #include <jffs2/load_kernel.h>
  25
  26 #ifndef CONFIG_BOARD_EARLY_INIT_F
  27 #error "CONFIG_BOARD_EARLY_INIT_F must be set for this board"
  28 #endif
  29
  30 #define CCM_CCMR_CONFIG         0x003F4208
  31
  32 #define ESDCTL_DDR2_CONFIG      0x007FFC3F
  33
  34 static inline void dram_wait(unsigned int count)
  35 {
  36         volatile unsigned int wait = count;
  37
  38         while (wait--)
  39                 ;
  40 }
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 int dram_init(void)
  45 {
  46         gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1,
  47                 PHYS_SDRAM_1_SIZE);
  48
  49         return 0;
  50 }
  51
  52 static void board_setup_sdram(void)
  53 {
  54         struct esdc_regs *esdc = (struct esdc_regs *)ESDCTL_BASE_ADDR;
  55
  56         /* Initialize with default values both CSD0/1 */
  57         writel(0x2000, &esdc->esdctl0);
  58         writel(0x2000, &esdc->esdctl1);
  59
  60
  61         mx3_setup_sdram_bank(CSD0_BASE_ADDR, ESDCTL_DDR2_CONFIG,
  62                              13, 10, 2, 0x8080);
  63 }
  64
  65 static void setup_iomux_uart3(void)
  66 {
  67         static const iomux_v3_cfg_t uart3_pads[] = {
  68                 MX35_PAD_RTS2__UART3_RXD_MUX,
  69                 MX35_PAD_CTS2__UART3_TXD_MUX,
  70         };
  71
  72         imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
  73 }
  74
  75 #define I2C_PAD_CTRL    (PAD_CTL_HYS | PAD_CTL_PUS_100K_DOWN | PAD_CTL_ODE)
  76
  77 static void setup_iomux_i2c(void)
  78 {
  79         static const iomux_v3_cfg_t i2c_pads[] = {
  80                 NEW_PAD_CTRL(MX35_PAD_I2C1_CLK__I2C1_SCL, I2C_PAD_CTRL),
  81                 NEW_PAD_CTRL(MX35_PAD_I2C1_DAT__I2C1_SDA, I2C_PAD_CTRL),
  82
  83                 NEW_PAD_CTRL(MX35_PAD_TX3_RX2__I2C3_SCL, I2C_PAD_CTRL),
  84                 NEW_PAD_CTRL(MX35_PAD_TX2_RX3__I2C3_SDA, I2C_PAD_CTRL),
  85         };
  86
  87         imx_iomux_v3_setup_multiple_pads(i2c_pads, ARRAY_SIZE(i2c_pads));
  88 }
  89
  90
  91 static void setup_iomux_spi(void)
  92 {
  93         static const iomux_v3_cfg_t spi_pads[] = {
  94                 MX35_PAD_CSPI1_MOSI__CSPI1_MOSI,
  95                 MX35_PAD_CSPI1_MISO__CSPI1_MISO,
  96                 MX35_PAD_CSPI1_SS0__CSPI1_SS0,
  97                 MX35_PAD_CSPI1_SS1__CSPI1_SS1,
  98                 MX35_PAD_CSPI1_SCLK__CSPI1_SCLK,
  99         };
 100
 101         imx_iomux_v3_setup_multiple_pads(spi_pads, ARRAY_SIZE(spi_pads));
 102 }
 103
 104 static void setup_iomux_fec(void)
 105 {
 106         static const iomux_v3_cfg_t fec_pads[] = {
 107                 MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
 108                 MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
 109                 MX35_PAD_FEC_RX_DV__FEC_RX_DV,
 110                 MX35_PAD_FEC_COL__FEC_COL,
 111                 MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
 112                 MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
 113                 MX35_PAD_FEC_TX_EN__FEC_TX_EN,
 114                 MX35_PAD_FEC_MDC__FEC_MDC,
 115                 MX35_PAD_FEC_MDIO__FEC_MDIO,
 116                 MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
 117                 MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
 118                 MX35_PAD_FEC_CRS__FEC_CRS,
 119                 MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
 120                 MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
 121                 MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
 122                 MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
 123                 MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
 124                 MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
 125                 /* GPIO used to power off ethernet */
 126                 MX35_PAD_STXFS4__GPIO2_31,
 127         };
 128
 129         /* setup pins for FEC */
 130         imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
 131 }
 132
 133 int board_early_init_f(void)
 134 {
 135         struct ccm_regs *ccm =
 136                 (struct ccm_regs *)IMX_CCM_BASE;
 137
 138         /* setup GPIO3_1 to set HighVCore signal */
 139         imx_iomux_v3_setup_pad(MX35_PAD_ATA_DA1__GPIO3_1);
 140         gpio_direction_output(65, 1);
 141
 142         /* initialize PLL and clock configuration */
 143         writel(CCM_CCMR_CONFIG, &ccm->ccmr);
 144
 145         writel(CCM_MPLL_532_HZ, &ccm->mpctl);
 146         writel(CCM_PPLL_300_HZ, &ccm->ppctl);
 147
 148         /* Set the core to run at 532 Mhz */
 149         writel(0x00001000, &ccm->pdr0);
 150
 151         /* Set-up RAM */
 152         board_setup_sdram();
 153
 154         /* enable clocks */
 155         writel(readl(&ccm->cgr0) |
 156                 MXC_CCM_CGR0_EMI_MASK |
 157                 MXC_CCM_CGR0_EDIO_MASK |
 158                 MXC_CCM_CGR0_EPIT1_MASK,
 159                 &ccm->cgr0);
 160
 161         writel(readl(&ccm->cgr1) |
 162                 MXC_CCM_CGR1_FEC_MASK |
 163                 MXC_CCM_CGR1_GPIO1_MASK |
 164                 MXC_CCM_CGR1_GPIO2_MASK |
 165                 MXC_CCM_CGR1_GPIO3_MASK |
 166                 MXC_CCM_CGR1_I2C1_MASK |
 167                 MXC_CCM_CGR1_I2C2_MASK |
 168                 MXC_CCM_CGR1_I2C3_MASK,
 169                 &ccm->cgr1);
 170
 171         /* Set-up NAND */
 172         __raw_writel(readl(&ccm->rcsr) | MXC_CCM_RCSR_NFC_FMS, &ccm->rcsr);
 173
 174         /* Set pinmux for the required peripherals */
 175         setup_iomux_uart3();
 176         setup_iomux_i2c();
 177         setup_iomux_fec();
 178         setup_iomux_spi();
 179
 180         return 0;
 181 }
 182
 183 int board_init(void)
 184 {
 185         /* address of boot parameters */
 186         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 187
 188         /* Enable power for ethernet */
 189         gpio_direction_output(63, 0);
 190
 191         udelay(2000);
 192
 193         return 0;
 194 }
 195
 196 u32 get_board_rev(void)
 197 {
 198         int rev = 0;
 199
 200         return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
 201 }
 202
 203 /*
 204  * called prior to booting kernel or by 'fdt boardsetup' command
 205  *
 206  */
 207 int ft_board_setup(void *blob, bd_t *bd)
 208 {
 209         struct node_info nodes[] = {
 210                 { "physmap-flash.0", MTD_DEV_TYPE_NOR, },  /* NOR flash */
 211                 { "mxc_nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
 212         };
 213
 214         if (getenv("fdt_noauto")) {
 215                 puts("   Skiping ft_board_setup (fdt_noauto defined)\n");
 216                 return 0;
 217         }
 218
 219         fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 220
 221         return 0;
 222 }