uboot/board/beckhoff/mx53cx9020/mx53cx9020.c
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   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2015  Beckhoff Automation GmbH & Co. KG
   4 * Patrick Bruenn <p.bruenn@beckhoff.com>
   5 *
   6 * Based on <u-boot>/board/freescale/mx53loco/mx53loco.c
   7 * Copyright (C) 2011 Freescale Semiconductor, Inc.
   8 */
   9
  10#include <common.h>
  11#include <cpu_func.h>
  12#include <init.h>
  13#include <asm/arch/sys_proto.h>
  14#include <asm/arch/clock.h>
  15#include <asm/arch/iomux-mx53.h>
  16#include <asm/global_data.h>
  17#include <asm/mach-imx/mx5_video.h>
  18#include <ACEX1K.h>
  19#include <asm/gpio.h>
  20#include <linux/delay.h>
  21
  22enum LED_GPIOS {
  23        GPIO_SD1_CD = IMX_GPIO_NR(1, 1),
  24        GPIO_SD2_CD = IMX_GPIO_NR(1, 4),
  25        GPIO_LED_SD2_R = IMX_GPIO_NR(3, 16),
  26        GPIO_LED_SD2_B = IMX_GPIO_NR(3, 17),
  27        GPIO_LED_SD2_G = IMX_GPIO_NR(3, 18),
  28        GPIO_LED_SD1_R = IMX_GPIO_NR(3, 19),
  29        GPIO_LED_SD1_B = IMX_GPIO_NR(3, 20),
  30        GPIO_LED_SD1_G = IMX_GPIO_NR(3, 21),
  31        GPIO_LED_PWR_R = IMX_GPIO_NR(3, 22),
  32        GPIO_LED_PWR_B = IMX_GPIO_NR(3, 23),
  33        GPIO_LED_PWR_G = IMX_GPIO_NR(3, 24),
  34        GPIO_SUPS_INT = IMX_GPIO_NR(3, 31),
  35        GPIO_C3_CONFIG = IMX_GPIO_NR(6, 8),
  36        GPIO_C3_STATUS = IMX_GPIO_NR(6, 7),
  37        GPIO_C3_DONE = IMX_GPIO_NR(6, 9),
  38};
  39
  40#define CCAT_BASE_ADDR ((void *)0xf0000000)
  41#define CCAT_END_ADDR (CCAT_BASE_ADDR + (1024 * 1024 * 32))
  42#define CCAT_SIZE 1191788
  43#define CCAT_SIGN_ADDR (CCAT_BASE_ADDR + 12)
  44static const char CCAT_SIGNATURE[] = "CCAT";
  45
  46static const u32 CCAT_MODE_CONFIG = 0x0024DC81;
  47static const u32 CCAT_MODE_RUN = 0x0033DC8F;
  48
  49DECLARE_GLOBAL_DATA_PTR;
  50
  51#ifdef CONFIG_REVISION_TAG
  52u32 get_board_rev(void)
  53{
  54        struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
  55        struct fuse_bank *bank = &iim->bank[0];
  56        struct fuse_bank0_regs *fuse =
  57            (struct fuse_bank0_regs *)bank->fuse_regs;
  58
  59        int rev = readl(&fuse->gp[6]);
  60
  61        return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
  62}
  63#endif
  64
  65/*
  66 * Set CCAT mode
  67 * @mode: use CCAT_MODE_CONFIG or CCAT_MODE_RUN
  68 */
  69void weim_cs0_settings(u32 mode)
  70{
  71        struct weim *weim_regs = (struct weim *)WEIM_BASE_ADDR;
  72
  73        writel(0x0, &weim_regs->cs0gcr1);
  74        writel(mode, &weim_regs->cs0gcr1);
  75        writel(0x00001002, &weim_regs->cs0gcr2);
  76
  77        writel(0x04000000, &weim_regs->cs0rcr1);
  78        writel(0x00000000, &weim_regs->cs0rcr2);
  79
  80        writel(0x04000000, &weim_regs->cs0wcr1);
  81        writel(0x00000000, &weim_regs->cs0wcr2);
  82}
  83
  84static void setup_gpio_eim(void)
  85{
  86        gpio_request(GPIO_C3_STATUS, "GPIO_C3_STATUS");
  87        gpio_request(GPIO_C3_DONE, "GPIO_C3_DONE");
  88        gpio_request(GPIO_C3_CONFIG, "GPIO_C3_CONFIG");
  89        gpio_direction_input(GPIO_C3_STATUS);
  90        gpio_direction_input(GPIO_C3_DONE);
  91        gpio_direction_output(GPIO_C3_CONFIG, 1);
  92
  93        weim_cs0_settings(CCAT_MODE_RUN);
  94}
  95
  96static void setup_gpio_sups(void)
  97{
  98        gpio_request(GPIO_SUPS_INT, "GPIO_SUPS_INT");
  99        gpio_direction_input(GPIO_SUPS_INT);
 100
 101        static const int BLINK_INTERVALL = 50000;
 102        int status = 1;
 103        while (gpio_get_value(GPIO_SUPS_INT)) {
 104                /* signal "CX SUPS power fail" */
 105                gpio_set_value(GPIO_LED_PWR_R,
 106                               (++status / BLINK_INTERVALL) % 2);
 107        }
 108
 109        /* signal "CX power up" */
 110        gpio_set_value(GPIO_LED_PWR_R, 1);
 111}
 112
 113static void setup_gpio_leds(void)
 114{
 115        gpio_request(GPIO_LED_SD2_R, "GPIO_LED_SD2_R");
 116        gpio_request(GPIO_LED_SD2_B, "GPIO_LED_SD2_B");
 117        gpio_request(GPIO_LED_SD2_G, "GPIO_LED_SD2_G");
 118        gpio_request(GPIO_LED_SD1_R, "GPIO_LED_SD1_R");
 119        gpio_request(GPIO_LED_SD1_B, "GPIO_LED_SD1_B");
 120        gpio_request(GPIO_LED_SD1_G, "GPIO_LED_SD1_G");
 121        gpio_request(GPIO_LED_PWR_R, "GPIO_LED_PWR_R");
 122        gpio_request(GPIO_LED_PWR_B, "GPIO_LED_PWR_B");
 123        gpio_request(GPIO_LED_PWR_G, "GPIO_LED_PWR_G");
 124
 125        gpio_direction_output(GPIO_LED_SD2_R, 0);
 126        gpio_direction_output(GPIO_LED_SD2_B, 0);
 127        gpio_direction_output(GPIO_LED_SD2_G, 0);
 128        gpio_direction_output(GPIO_LED_SD1_R, 0);
 129        gpio_direction_output(GPIO_LED_SD1_B, 0);
 130        gpio_direction_output(GPIO_LED_SD1_G, 0);
 131        gpio_direction_output(GPIO_LED_PWR_R, 0);
 132        gpio_direction_output(GPIO_LED_PWR_B, 0);
 133        gpio_direction_output(GPIO_LED_PWR_G, 0);
 134}
 135
 136static int power_init(void)
 137{
 138        /* nothing to do on CX9020 */
 139        return 0;
 140}
 141
 142static void clock_1GHz(void)
 143{
 144        int ret;
 145        u32 ref_clk = MXC_HCLK;
 146        /*
 147         * After increasing voltage to 1.25V, we can switch
 148         * CPU clock to 1GHz and DDR to 400MHz safely
 149         */
 150        ret = mxc_set_clock(ref_clk, 1000, MXC_ARM_CLK);
 151        if (ret)
 152                printf("CPU:   Switch CPU clock to 1GHZ failed\n");
 153
 154        ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK);
 155        ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK);
 156        if (ret)
 157                printf("CPU:   Switch DDR clock to 400MHz failed\n");
 158}
 159
 160int board_early_init_f(void)
 161{
 162
 163        return 0;
 164}
 165
 166int board_init(void)
 167{
 168        gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 169
 170        mxc_set_sata_internal_clock();
 171
 172        setup_gpio_leds();
 173        setup_gpio_sups();
 174        setup_gpio_eim();
 175        setup_iomux_lcd();
 176
 177        return 0;
 178}
 179
 180int checkboard(void)
 181{
 182        puts("Board: Beckhoff CX9020\n");
 183
 184        return 0;
 185}
 186
 187static int ccat_config_fn(int assert_config, int flush, int cookie)
 188{
 189        /* prepare FPGA for programming */
 190        weim_cs0_settings(CCAT_MODE_CONFIG);
 191        gpio_set_value(GPIO_C3_CONFIG, 0);
 192        udelay(1);
 193        gpio_set_value(GPIO_C3_CONFIG, 1);
 194        udelay(230);
 195
 196        return FPGA_SUCCESS;
 197}
 198
 199static int ccat_status_fn(int cookie)
 200{
 201        return FPGA_FAIL;
 202}
 203
 204static int ccat_write_fn(const void *buf, size_t buf_len, int flush, int cookie)
 205{
 206        const uint8_t *const buffer = buf;
 207
 208        /* program CCAT */
 209        int i;
 210        for (i = 0; i < buf_len; ++i)
 211                writeb(buffer[i], CCAT_BASE_ADDR);
 212
 213        writeb(0xff, CCAT_BASE_ADDR);
 214        writeb(0xff, CCAT_BASE_ADDR);
 215
 216        return FPGA_SUCCESS;
 217}
 218
 219static int ccat_done_fn(int cookie)
 220{
 221        /* programming complete? */
 222        return gpio_get_value(GPIO_C3_DONE);
 223}
 224
 225static int ccat_post_fn(int cookie)
 226{
 227        /* switch to FPGA run mode */
 228        weim_cs0_settings(CCAT_MODE_RUN);
 229        invalidate_dcache_range((ulong) CCAT_BASE_ADDR, (ulong) CCAT_END_ADDR);
 230
 231        if (memcmp(CCAT_SIGN_ADDR, CCAT_SIGNATURE, sizeof(CCAT_SIGNATURE))) {
 232                printf("Verifing CCAT firmware failed, signature not found\n");
 233                return FPGA_FAIL;
 234        }
 235
 236        /* signal "CX booting OS" */
 237        gpio_set_value(GPIO_LED_PWR_R, 1);
 238        gpio_set_value(GPIO_LED_PWR_G, 1);
 239        gpio_set_value(GPIO_LED_PWR_B, 0);
 240        return FPGA_SUCCESS;
 241}
 242
 243static Altera_CYC2_Passive_Serial_fns ccat_fns = {
 244        .config = ccat_config_fn,
 245        .status = ccat_status_fn,
 246        .done = ccat_done_fn,
 247        .write = ccat_write_fn,
 248        .abort = ccat_post_fn,
 249        .post = ccat_post_fn,
 250};
 251
 252static Altera_desc ccat_fpga = {
 253        .family = Altera_CYC2,
 254        .iface = passive_serial,
 255        .size = CCAT_SIZE,
 256        .iface_fns = &ccat_fns,
 257        .base = CCAT_BASE_ADDR,
 258};
 259
 260int board_late_init(void)
 261{
 262        if (!power_init())
 263                clock_1GHz();
 264
 265        fpga_init();
 266        fpga_add(fpga_altera, &ccat_fpga);
 267
 268        return 0;
 269}
 270