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