uboot/board/samsung/common/board.c
<<
>>
Prefs
   1/*
   2 * (C) Copyright 2013 SAMSUNG Electronics
   3 * Rajeshwari Shinde <rajeshwari.s@samsung.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <common.h>
   9#include <cros_ec.h>
  10#include <errno.h>
  11#include <fdtdec.h>
  12#include <spi.h>
  13#include <tmu.h>
  14#include <netdev.h>
  15#include <asm/io.h>
  16#include <asm/gpio.h>
  17#include <asm/arch/board.h>
  18#include <asm/arch/cpu.h>
  19#include <asm/arch/dwmmc.h>
  20#include <asm/arch/mmc.h>
  21#include <asm/arch/pinmux.h>
  22#include <asm/arch/power.h>
  23#include <asm/arch/system.h>
  24#include <asm/arch/sromc.h>
  25#include <lcd.h>
  26#include <i2c.h>
  27#include <usb.h>
  28#include <dwc3-uboot.h>
  29#include <samsung/misc.h>
  30#include <dm/pinctrl.h>
  31#include <dm.h>
  32
  33DECLARE_GLOBAL_DATA_PTR;
  34
  35__weak int exynos_early_init_f(void)
  36{
  37        return 0;
  38}
  39
  40__weak int exynos_power_init(void)
  41{
  42        return 0;
  43}
  44
  45#if defined CONFIG_EXYNOS_TMU
  46/* Boot Time Thermal Analysis for SoC temperature threshold breach */
  47static void boot_temp_check(void)
  48{
  49        int temp;
  50
  51        switch (tmu_monitor(&temp)) {
  52        case TMU_STATUS_NORMAL:
  53                break;
  54        case TMU_STATUS_TRIPPED:
  55                /*
  56                 * Status TRIPPED ans WARNING means corresponding threshold
  57                 * breach
  58                 */
  59                puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
  60                set_ps_hold_ctrl();
  61                hang();
  62                break;
  63        case TMU_STATUS_WARNING:
  64                puts("EXYNOS_TMU: WARNING! Temperature very high\n");
  65                break;
  66        case TMU_STATUS_INIT:
  67                /*
  68                 * TMU_STATUS_INIT means something is wrong with temperature
  69                 * sensing and TMU status was changed back from NORMAL to INIT.
  70                 */
  71                puts("EXYNOS_TMU: WARNING! Temperature sensing not done\n");
  72                break;
  73        default:
  74                debug("EXYNOS_TMU: Unknown TMU state\n");
  75        }
  76}
  77#endif
  78
  79int board_init(void)
  80{
  81        gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
  82#if defined CONFIG_EXYNOS_TMU
  83        if (tmu_init(gd->fdt_blob) != TMU_STATUS_NORMAL) {
  84                debug("%s: Failed to init TMU\n", __func__);
  85                return -1;
  86        }
  87        boot_temp_check();
  88#endif
  89#ifdef CONFIG_TZSW_RESERVED_DRAM_SIZE
  90        /* The last few MB of memory can be reserved for secure firmware */
  91        ulong size = CONFIG_TZSW_RESERVED_DRAM_SIZE;
  92
  93        gd->ram_size -= size;
  94        gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= size;
  95#endif
  96        return exynos_init();
  97}
  98
  99int dram_init(void)
 100{
 101        unsigned int i;
 102        unsigned long addr;
 103
 104        for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 105                addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
 106                gd->ram_size += get_ram_size((long *)addr, SDRAM_BANK_SIZE);
 107        }
 108        return 0;
 109}
 110
 111void dram_init_banksize(void)
 112{
 113        unsigned int i;
 114        unsigned long addr, size;
 115
 116        for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 117                addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
 118                size = get_ram_size((long *)addr, SDRAM_BANK_SIZE);
 119
 120                gd->bd->bi_dram[i].start = addr;
 121                gd->bd->bi_dram[i].size = size;
 122        }
 123}
 124
 125static int board_uart_init(void)
 126{
 127#ifndef CONFIG_PINCTRL_EXYNOS
 128        int err, uart_id, ret = 0;
 129
 130        for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) {
 131                err = exynos_pinmux_config(uart_id, PINMUX_FLAG_NONE);
 132                if (err) {
 133                        debug("UART%d not configured\n",
 134                              (uart_id - PERIPH_ID_UART0));
 135                        ret |= err;
 136                }
 137        }
 138        return ret;
 139#else
 140        return 0;
 141#endif
 142}
 143
 144#ifdef CONFIG_BOARD_EARLY_INIT_F
 145int board_early_init_f(void)
 146{
 147        int err;
 148#ifdef CONFIG_BOARD_TYPES
 149        set_board_type();
 150#endif
 151        err = board_uart_init();
 152        if (err) {
 153                debug("UART init failed\n");
 154                return err;
 155        }
 156
 157#ifdef CONFIG_SYS_I2C_INIT_BOARD
 158        board_i2c_init(gd->fdt_blob);
 159#endif
 160
 161        return exynos_early_init_f();
 162}
 163#endif
 164
 165#if defined(CONFIG_POWER) || defined(CONFIG_DM_PMIC)
 166int power_init_board(void)
 167{
 168        set_ps_hold_ctrl();
 169
 170        return exynos_power_init();
 171}
 172#endif
 173
 174#ifdef CONFIG_SMC911X
 175static int decode_sromc(const void *blob, struct fdt_sromc *config)
 176{
 177        int err;
 178        int node;
 179
 180        node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC);
 181        if (node < 0) {
 182                debug("Could not find SROMC node\n");
 183                return node;
 184        }
 185
 186        config->bank = fdtdec_get_int(blob, node, "bank", 0);
 187        config->width = fdtdec_get_int(blob, node, "width", 2);
 188
 189        err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing,
 190                        FDT_SROM_TIMING_COUNT);
 191        if (err < 0) {
 192                debug("Could not decode SROMC configuration Error: %s\n",
 193                      fdt_strerror(err));
 194                return -FDT_ERR_NOTFOUND;
 195        }
 196        return 0;
 197}
 198#endif
 199
 200int board_eth_init(bd_t *bis)
 201{
 202#ifdef CONFIG_SMC911X
 203        u32 smc_bw_conf, smc_bc_conf;
 204        struct fdt_sromc config;
 205        fdt_addr_t base_addr;
 206        int node;
 207
 208        node = decode_sromc(gd->fdt_blob, &config);
 209        if (node < 0) {
 210                debug("%s: Could not find sromc configuration\n", __func__);
 211                return 0;
 212        }
 213        node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215);
 214        if (node < 0) {
 215                debug("%s: Could not find lan9215 configuration\n", __func__);
 216                return 0;
 217        }
 218
 219        /* We now have a node, so any problems from now on are errors */
 220        base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg");
 221        if (base_addr == FDT_ADDR_T_NONE) {
 222                debug("%s: Could not find lan9215 address\n", __func__);
 223                return -1;
 224        }
 225
 226        /* Ethernet needs data bus width of 16 bits */
 227        if (config.width != 2) {
 228                debug("%s: Unsupported bus width %d\n", __func__,
 229                      config.width);
 230                return -1;
 231        }
 232        smc_bw_conf = SROMC_DATA16_WIDTH(config.bank)
 233                        | SROMC_BYTE_ENABLE(config.bank);
 234
 235        smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS])   |
 236                        SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) |
 237                        SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) |
 238                        SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) |
 239                        SROMC_BC_TAH(config.timing[FDT_SROM_TAH])   |
 240                        SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) |
 241                        SROMC_BC_PMC(config.timing[FDT_SROM_PMC]);
 242
 243        /* Select and configure the SROMC bank */
 244        exynos_pinmux_config(PERIPH_ID_SROMC, config.bank);
 245        s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf);
 246        return smc911x_initialize(0, base_addr);
 247#endif
 248        return 0;
 249}
 250
 251#ifdef CONFIG_GENERIC_MMC
 252static int init_mmc(void)
 253{
 254#ifdef CONFIG_MMC_SDHCI
 255        return exynos_mmc_init(gd->fdt_blob);
 256#else
 257        return 0;
 258#endif
 259}
 260
 261static int init_dwmmc(void)
 262{
 263#ifdef CONFIG_MMC_DW
 264        return exynos_dwmmc_init(gd->fdt_blob);
 265#else
 266        return 0;
 267#endif
 268}
 269
 270int board_mmc_init(bd_t *bis)
 271{
 272        int ret;
 273
 274        if (get_boot_mode() == BOOT_MODE_SD) {
 275                ret = init_mmc();
 276                ret |= init_dwmmc();
 277        } else {
 278                ret = init_dwmmc();
 279                ret |= init_mmc();
 280        }
 281
 282        if (ret)
 283                debug("mmc init failed\n");
 284
 285        return ret;
 286}
 287#endif
 288
 289#ifdef CONFIG_DISPLAY_BOARDINFO
 290int checkboard(void)
 291{
 292        const char *board_info;
 293
 294        board_info = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
 295        printf("Board: %s\n", board_info ? board_info : "unknown");
 296#ifdef CONFIG_BOARD_TYPES
 297        board_info = get_board_type();
 298        if (board_info)
 299                printf("Type:  %s\n", board_info);
 300#endif
 301        return 0;
 302}
 303#endif
 304
 305#ifdef CONFIG_BOARD_LATE_INIT
 306int board_late_init(void)
 307{
 308        stdio_print_current_devices();
 309
 310        if (cros_ec_get_error()) {
 311                /* Force console on */
 312                gd->flags &= ~GD_FLG_SILENT;
 313
 314                printf("cros-ec communications failure %d\n",
 315                       cros_ec_get_error());
 316                puts("\nPlease reset with Power+Refresh\n\n");
 317                panic("Cannot init cros-ec device");
 318                return -1;
 319        }
 320        return 0;
 321}
 322#endif
 323
 324#ifdef CONFIG_MISC_INIT_R
 325int misc_init_r(void)
 326{
 327#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 328        set_board_info();
 329#endif
 330#ifdef CONFIG_LCD_MENU
 331        keys_init();
 332        check_boot_mode();
 333#endif
 334#ifdef CONFIG_CMD_BMP
 335        if (panel_info.logo_on)
 336                draw_logo();
 337#endif
 338        return 0;
 339}
 340#endif
 341
 342void reset_misc(void)
 343{
 344        struct gpio_desc gpio = {};
 345        int node;
 346
 347        node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
 348                        "samsung,emmc-reset");
 349        if (node < 0)
 350                return;
 351
 352        gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio,
 353                                   GPIOD_IS_OUT);
 354
 355        if (dm_gpio_is_valid(&gpio)) {
 356                /*
 357                 * Reset eMMC
 358                 *
 359                 * FIXME: Need to optimize delay time. Minimum 1usec pulse is
 360                 *        required by 'JEDEC Standard No.84-A441' (eMMC)
 361                 *        document but real delay time is expected to greater
 362                 *        than 1usec.
 363                 */
 364                dm_gpio_set_value(&gpio, 0);
 365                mdelay(10);
 366                dm_gpio_set_value(&gpio, 1);
 367        }
 368}
 369
 370int board_usb_cleanup(int index, enum usb_init_type init)
 371{
 372#ifdef CONFIG_USB_DWC3
 373        dwc3_uboot_exit(index);
 374#endif
 375        return 0;
 376}
 377