uboot/board/beckhoff/mx53cx9020/mx53cx9020.c
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   1/*
   2 * Copyright (C) 2015  Beckhoff Automation GmbH & Co. KG
   3 * Patrick Bruenn <p.bruenn@beckhoff.com>
   4 *
   5 * Based on <u-boot>/board/freescale/mx53loco/mx53loco.c
   6 * Copyright (C) 2011 Freescale Semiconductor, Inc.
   7 *
   8 * SPDX-License-Identifier:     GPL-2.0+
   9 */
  10
  11#include <common.h>
  12#include <dm.h>
  13#include <asm/io.h>
  14#include <asm/arch/imx-regs.h>
  15#include <asm/arch/sys_proto.h>
  16#include <asm/arch/crm_regs.h>
  17#include <asm/arch/clock.h>
  18#include <asm/arch/iomux-mx53.h>
  19#include <asm/arch/clock.h>
  20#include <asm/mach-imx/mx5_video.h>
  21#include <ACEX1K.h>
  22#include <netdev.h>
  23#include <i2c.h>
  24#include <mmc.h>
  25#include <fsl_esdhc.h>
  26#include <asm/gpio.h>
  27#include <linux/fb.h>
  28#include <ipu_pixfmt.h>
  29#include <fs.h>
  30#include <dm/platform_data/serial_mxc.h>
  31
  32enum LED_GPIOS {
  33        GPIO_SD1_CD = IMX_GPIO_NR(1, 1),
  34        GPIO_SD2_CD = IMX_GPIO_NR(1, 4),
  35        GPIO_LED_SD2_R = IMX_GPIO_NR(3, 16),
  36        GPIO_LED_SD2_B = IMX_GPIO_NR(3, 17),
  37        GPIO_LED_SD2_G = IMX_GPIO_NR(3, 18),
  38        GPIO_LED_SD1_R = IMX_GPIO_NR(3, 19),
  39        GPIO_LED_SD1_B = IMX_GPIO_NR(3, 20),
  40        GPIO_LED_SD1_G = IMX_GPIO_NR(3, 21),
  41        GPIO_LED_PWR_R = IMX_GPIO_NR(3, 22),
  42        GPIO_LED_PWR_B = IMX_GPIO_NR(3, 23),
  43        GPIO_LED_PWR_G = IMX_GPIO_NR(3, 24),
  44        GPIO_SUPS_INT = IMX_GPIO_NR(3, 31),
  45        GPIO_C3_CONFIG = IMX_GPIO_NR(6, 8),
  46        GPIO_C3_STATUS = IMX_GPIO_NR(6, 7),
  47        GPIO_C3_DONE = IMX_GPIO_NR(6, 9),
  48};
  49
  50#define CCAT_BASE_ADDR ((void *)0xf0000000)
  51#define CCAT_END_ADDR (CCAT_BASE_ADDR + (1024 * 1024 * 32))
  52#define CCAT_SIZE 1191788
  53#define CCAT_SIGN_ADDR (CCAT_BASE_ADDR + 12)
  54static const char CCAT_SIGNATURE[] = "CCAT";
  55
  56static const u32 CCAT_MODE_CONFIG = 0x0024DC81;
  57static const u32 CCAT_MODE_RUN = 0x0033DC8F;
  58
  59DECLARE_GLOBAL_DATA_PTR;
  60
  61static uint32_t mx53_dram_size[2];
  62
  63phys_size_t get_effective_memsize(void)
  64{
  65        /*
  66         * WARNING: We must override get_effective_memsize() function here
  67         * to report only the size of the first DRAM bank. This is to make
  68         * U-Boot relocator place U-Boot into valid memory, that is, at the
  69         * end of the first DRAM bank. If we did not override this function
  70         * like so, U-Boot would be placed at the address of the first DRAM
  71         * bank + total DRAM size - sizeof(uboot), which in the setup where
  72         * each DRAM bank contains 512MiB of DRAM would result in placing
  73         * U-Boot into invalid memory area close to the end of the first
  74         * DRAM bank.
  75         */
  76        return mx53_dram_size[0];
  77}
  78
  79int dram_init(void)
  80{
  81        mx53_dram_size[0] = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30);
  82        mx53_dram_size[1] = get_ram_size((void *)PHYS_SDRAM_2, 1 << 30);
  83
  84        gd->ram_size = mx53_dram_size[0] + mx53_dram_size[1];
  85
  86        return 0;
  87}
  88
  89int dram_init_banksize(void)
  90{
  91        gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  92        gd->bd->bi_dram[0].size = mx53_dram_size[0];
  93
  94        gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
  95        gd->bd->bi_dram[1].size = mx53_dram_size[1];
  96
  97        return 0;
  98}
  99
 100u32 get_board_rev(void)
 101{
 102        struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
 103        struct fuse_bank *bank = &iim->bank[0];
 104        struct fuse_bank0_regs *fuse =
 105            (struct fuse_bank0_regs *)bank->fuse_regs;
 106
 107        int rev = readl(&fuse->gp[6]);
 108
 109        return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
 110}
 111
 112/*
 113 * Set CCAT mode
 114 * @mode: use CCAT_MODE_CONFIG or CCAT_MODE_RUN
 115 */
 116void weim_cs0_settings(u32 mode)
 117{
 118        struct weim *weim_regs = (struct weim *)WEIM_BASE_ADDR;
 119
 120        writel(0x0, &weim_regs->cs0gcr1);
 121        writel(mode, &weim_regs->cs0gcr1);
 122        writel(0x00001002, &weim_regs->cs0gcr2);
 123
 124        writel(0x04000000, &weim_regs->cs0rcr1);
 125        writel(0x00000000, &weim_regs->cs0rcr2);
 126
 127        writel(0x04000000, &weim_regs->cs0wcr1);
 128        writel(0x00000000, &weim_regs->cs0wcr2);
 129}
 130
 131static void setup_gpio_eim(void)
 132{
 133        gpio_direction_input(GPIO_C3_STATUS);
 134        gpio_direction_input(GPIO_C3_DONE);
 135        gpio_direction_output(GPIO_C3_CONFIG, 1);
 136
 137        weim_cs0_settings(CCAT_MODE_RUN);
 138}
 139
 140static void setup_gpio_sups(void)
 141{
 142        gpio_direction_input(GPIO_SUPS_INT);
 143
 144        static const int BLINK_INTERVALL = 50000;
 145        int status = 1;
 146        while (gpio_get_value(GPIO_SUPS_INT)) {
 147                /* signal "CX SUPS power fail" */
 148                gpio_set_value(GPIO_LED_PWR_R,
 149                               (++status / BLINK_INTERVALL) % 2);
 150        }
 151
 152        /* signal "CX power up" */
 153        gpio_set_value(GPIO_LED_PWR_R, 1);
 154}
 155
 156static void setup_gpio_leds(void)
 157{
 158        gpio_direction_output(GPIO_LED_SD2_R, 0);
 159        gpio_direction_output(GPIO_LED_SD2_B, 0);
 160        gpio_direction_output(GPIO_LED_SD2_G, 0);
 161        gpio_direction_output(GPIO_LED_SD1_R, 0);
 162        gpio_direction_output(GPIO_LED_SD1_B, 0);
 163        gpio_direction_output(GPIO_LED_SD1_G, 0);
 164        gpio_direction_output(GPIO_LED_PWR_R, 0);
 165        gpio_direction_output(GPIO_LED_PWR_B, 0);
 166        gpio_direction_output(GPIO_LED_PWR_G, 0);
 167}
 168
 169#ifdef CONFIG_USB_EHCI_MX5
 170int board_ehci_hcd_init(int port)
 171{
 172        /* request VBUS power enable pin, GPIO7_8 */
 173        gpio_direction_output(IMX_GPIO_NR(7, 8), 1);
 174        return 0;
 175}
 176#endif
 177
 178#ifdef CONFIG_FSL_ESDHC
 179struct fsl_esdhc_cfg esdhc_cfg[2] = {
 180        {MMC_SDHC1_BASE_ADDR},
 181        {MMC_SDHC2_BASE_ADDR},
 182};
 183
 184int board_mmc_getcd(struct mmc *mmc)
 185{
 186        struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 187        int ret;
 188
 189        gpio_direction_input(GPIO_SD1_CD);
 190        gpio_direction_input(GPIO_SD2_CD);
 191
 192        if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
 193                ret = !gpio_get_value(GPIO_SD1_CD);
 194        else
 195                ret = !gpio_get_value(GPIO_SD2_CD);
 196
 197        return ret;
 198}
 199
 200int board_mmc_init(bd_t *bis)
 201{
 202        u32 index;
 203        int ret;
 204
 205        esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
 206        esdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 207
 208        for (index = 0; index < CONFIG_SYS_FSL_ESDHC_NUM; index++) {
 209                switch (index) {
 210                case 0:
 211                        break;
 212                case 1:
 213                        break;
 214                default:
 215                        printf("Warning: you configured more ESDHC controller(%d) as supported by the board(2)\n",
 216                               CONFIG_SYS_FSL_ESDHC_NUM);
 217                        return -EINVAL;
 218                }
 219                ret = fsl_esdhc_initialize(bis, &esdhc_cfg[index]);
 220                if (ret)
 221                        return ret;
 222        }
 223
 224        return 0;
 225}
 226#endif
 227
 228static int power_init(void)
 229{
 230        /* nothing to do on CX9020 */
 231        return 0;
 232}
 233
 234static void clock_1GHz(void)
 235{
 236        int ret;
 237        u32 ref_clk = MXC_HCLK;
 238        /*
 239         * After increasing voltage to 1.25V, we can switch
 240         * CPU clock to 1GHz and DDR to 400MHz safely
 241         */
 242        ret = mxc_set_clock(ref_clk, 1000, MXC_ARM_CLK);
 243        if (ret)
 244                printf("CPU:   Switch CPU clock to 1GHZ failed\n");
 245
 246        ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK);
 247        ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK);
 248        if (ret)
 249                printf("CPU:   Switch DDR clock to 400MHz failed\n");
 250}
 251
 252int board_early_init_f(void)
 253{
 254        setup_gpio_leds();
 255        setup_gpio_sups();
 256        setup_gpio_eim();
 257        setup_iomux_lcd();
 258
 259        return 0;
 260}
 261
 262/*
 263 * Do not overwrite the console
 264 * Use always serial for U-Boot console
 265 */
 266int overwrite_console(void)
 267{
 268        return 1;
 269}
 270
 271int board_init(void)
 272{
 273        gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 274
 275        mxc_set_sata_internal_clock();
 276
 277        return 0;
 278}
 279
 280int checkboard(void)
 281{
 282        puts("Board: Beckhoff CX9020\n");
 283
 284        return 0;
 285}
 286
 287static int ccat_config_fn(int assert_config, int flush, int cookie)
 288{
 289        /* prepare FPGA for programming */
 290        weim_cs0_settings(CCAT_MODE_CONFIG);
 291        gpio_set_value(GPIO_C3_CONFIG, 0);
 292        udelay(1);
 293        gpio_set_value(GPIO_C3_CONFIG, 1);
 294        udelay(230);
 295
 296        return FPGA_SUCCESS;
 297}
 298
 299static int ccat_status_fn(int cookie)
 300{
 301        return FPGA_FAIL;
 302}
 303
 304static int ccat_write_fn(const void *buf, size_t buf_len, int flush, int cookie)
 305{
 306        const uint8_t *const buffer = buf;
 307
 308        /* program CCAT */
 309        int i;
 310        for (i = 0; i < buf_len; ++i)
 311                writeb(buffer[i], CCAT_BASE_ADDR);
 312
 313        writeb(0xff, CCAT_BASE_ADDR);
 314        writeb(0xff, CCAT_BASE_ADDR);
 315
 316        return FPGA_SUCCESS;
 317}
 318
 319static int ccat_done_fn(int cookie)
 320{
 321        /* programming complete? */
 322        return gpio_get_value(GPIO_C3_DONE);
 323}
 324
 325static int ccat_post_fn(int cookie)
 326{
 327        /* switch to FPGA run mode */
 328        weim_cs0_settings(CCAT_MODE_RUN);
 329        invalidate_dcache_range((ulong) CCAT_BASE_ADDR, (ulong) CCAT_END_ADDR);
 330
 331        if (memcmp(CCAT_SIGN_ADDR, CCAT_SIGNATURE, sizeof(CCAT_SIGNATURE))) {
 332                printf("Verifing CCAT firmware failed, signature not found\n");
 333                return FPGA_FAIL;
 334        }
 335
 336        /* signal "CX booting OS" */
 337        gpio_set_value(GPIO_LED_PWR_R, 1);
 338        gpio_set_value(GPIO_LED_PWR_G, 1);
 339        gpio_set_value(GPIO_LED_PWR_B, 0);
 340        return FPGA_SUCCESS;
 341}
 342
 343static Altera_CYC2_Passive_Serial_fns ccat_fns = {
 344        .config = ccat_config_fn,
 345        .status = ccat_status_fn,
 346        .done = ccat_done_fn,
 347        .write = ccat_write_fn,
 348        .abort = ccat_post_fn,
 349        .post = ccat_post_fn,
 350};
 351
 352static Altera_desc ccat_fpga = {
 353        .family = Altera_CYC2,
 354        .iface = passive_serial,
 355        .size = CCAT_SIZE,
 356        .iface_fns = &ccat_fns,
 357        .base = CCAT_BASE_ADDR,
 358};
 359
 360int board_late_init(void)
 361{
 362        if (!power_init())
 363                clock_1GHz();
 364
 365        fpga_init();
 366        fpga_add(fpga_altera, &ccat_fpga);
 367
 368        return 0;
 369}
 370