board/samsung/common/board.c

   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
  33 DECLARE_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 */
  47 static 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
  79 int 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
  99 int 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
 111 int 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         return 0;
 125 }
 126
 127 static int board_uart_init(void)
 128 {
 129 #ifndef CONFIG_PINCTRL_EXYNOS
 130         int err, uart_id, ret = 0;
 131
 132         for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) {
 133                 err = exynos_pinmux_config(uart_id, PINMUX_FLAG_NONE);
 134                 if (err) {
 135                         debug("UART%d not configured\n",
 136                               (uart_id - PERIPH_ID_UART0));
 137                         ret |= err;
 138                 }
 139         }
 140         return ret;
 141 #else
 142         return 0;
 143 #endif
 144 }
 145
 146 #ifdef CONFIG_BOARD_EARLY_INIT_F
 147 int board_early_init_f(void)
 148 {
 149         int err;
 150 #ifdef CONFIG_BOARD_TYPES
 151         set_board_type();
 152 #endif
 153         err = board_uart_init();
 154         if (err) {
 155                 debug("UART init failed\n");
 156                 return err;
 157         }
 158
 159 #ifdef CONFIG_SYS_I2C_INIT_BOARD
 160         board_i2c_init(gd->fdt_blob);
 161 #endif
 162
 163         return exynos_early_init_f();
 164 }
 165 #endif
 166
 167 #if defined(CONFIG_POWER) || defined(CONFIG_DM_PMIC)
 168 int power_init_board(void)
 169 {
 170         set_ps_hold_ctrl();
 171
 172         return exynos_power_init();
 173 }
 174 #endif
 175
 176 #ifdef CONFIG_SMC911X
 177 static int decode_sromc(const void *blob, struct fdt_sromc *config)
 178 {
 179         int err;
 180         int node;
 181
 182         node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC);
 183         if (node < 0) {
 184                 debug("Could not find SROMC node\n");
 185                 return node;
 186         }
 187
 188         config->bank = fdtdec_get_int(blob, node, "bank", 0);
 189         config->width = fdtdec_get_int(blob, node, "width", 2);
 190
 191         err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing,
 192                         FDT_SROM_TIMING_COUNT);
 193         if (err < 0) {
 194                 debug("Could not decode SROMC configuration Error: %s\n",
 195                       fdt_strerror(err));
 196                 return -FDT_ERR_NOTFOUND;
 197         }
 198         return 0;
 199 }
 200 #endif
 201
 202 int board_eth_init(bd_t *bis)
 203 {
 204 #ifdef CONFIG_SMC911X
 205         u32 smc_bw_conf, smc_bc_conf;
 206         struct fdt_sromc config;
 207         fdt_addr_t base_addr;
 208         int node;
 209
 210         node = decode_sromc(gd->fdt_blob, &config);
 211         if (node < 0) {
 212                 debug("%s: Could not find sromc configuration\n", __func__);
 213                 return 0;
 214         }
 215         node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215);
 216         if (node < 0) {
 217                 debug("%s: Could not find lan9215 configuration\n", __func__);
 218                 return 0;
 219         }
 220
 221         /* We now have a node, so any problems from now on are errors */
 222         base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg");
 223         if (base_addr == FDT_ADDR_T_NONE) {
 224                 debug("%s: Could not find lan9215 address\n", __func__);
 225                 return -1;
 226         }
 227
 228         /* Ethernet needs data bus width of 16 bits */
 229         if (config.width != 2) {
 230                 debug("%s: Unsupported bus width %d\n", __func__,
 231                       config.width);
 232                 return -1;
 233         }
 234         smc_bw_conf = SROMC_DATA16_WIDTH(config.bank)
 235                         | SROMC_BYTE_ENABLE(config.bank);
 236
 237         smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS])   |
 238                         SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) |
 239                         SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) |
 240                         SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) |
 241                         SROMC_BC_TAH(config.timing[FDT_SROM_TAH])   |
 242                         SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) |
 243                         SROMC_BC_PMC(config.timing[FDT_SROM_PMC]);
 244
 245         /* Select and configure the SROMC bank */
 246         exynos_pinmux_config(PERIPH_ID_SROMC, config.bank);
 247         s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf);
 248         return smc911x_initialize(0, base_addr);
 249 #endif
 250         return 0;
 251 }
 252
 253 #ifdef CONFIG_GENERIC_MMC
 254 static int init_mmc(void)
 255 {
 256 #ifdef CONFIG_MMC_SDHCI
 257         return exynos_mmc_init(gd->fdt_blob);
 258 #else
 259         return 0;
 260 #endif
 261 }
 262
 263 static int init_dwmmc(void)
 264 {
 265 #ifdef CONFIG_MMC_DW
 266         return exynos_dwmmc_init(gd->fdt_blob);
 267 #else
 268         return 0;
 269 #endif
 270 }
 271
 272 int board_mmc_init(bd_t *bis)
 273 {
 274         int ret;
 275
 276         if (get_boot_mode() == BOOT_MODE_SD) {
 277                 ret = init_mmc();
 278                 ret |= init_dwmmc();
 279         } else {
 280                 ret = init_dwmmc();
 281                 ret |= init_mmc();
 282         }
 283
 284         if (ret)
 285                 debug("mmc init failed\n");
 286
 287         return ret;
 288 }
 289 #endif
 290
 291 #ifdef CONFIG_DISPLAY_BOARDINFO
 292 int checkboard(void)
 293 {
 294         const char *board_info;
 295
 296         board_info = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
 297         printf("Board: %s\n", board_info ? board_info : "unknown");
 298 #ifdef CONFIG_BOARD_TYPES
 299         board_info = get_board_type();
 300         if (board_info)
 301                 printf("Type:  %s\n", board_info);
 302 #endif
 303         return 0;
 304 }
 305 #endif
 306
 307 #ifdef CONFIG_BOARD_LATE_INIT
 308 int board_late_init(void)
 309 {
 310         stdio_print_current_devices();
 311
 312         if (cros_ec_get_error()) {
 313                 /* Force console on */
 314                 gd->flags &= ~GD_FLG_SILENT;
 315
 316                 printf("cros-ec communications failure %d\n",
 317                        cros_ec_get_error());
 318                 puts("\nPlease reset with Power+Refresh\n\n");
 319                 panic("Cannot init cros-ec device");
 320                 return -1;
 321         }
 322         return 0;
 323 }
 324 #endif
 325
 326 #ifdef CONFIG_MISC_INIT_R
 327 int misc_init_r(void)
 328 {
 329 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 330         set_board_info();
 331 #endif
 332 #ifdef CONFIG_LCD_MENU
 333         keys_init();
 334         check_boot_mode();
 335 #endif
 336 #ifdef CONFIG_CMD_BMP
 337         if (panel_info.logo_on)
 338                 draw_logo();
 339 #endif
 340         return 0;
 341 }
 342 #endif
 343
 344 void reset_misc(void)
 345 {
 346         struct gpio_desc gpio = {};
 347         int node;
 348
 349         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
 350                         "samsung,emmc-reset");
 351         if (node < 0)
 352                 return;
 353
 354         gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio,
 355                                    GPIOD_IS_OUT);
 356
 357         if (dm_gpio_is_valid(&gpio)) {
 358                 /*
 359                  * Reset eMMC
 360                  *
 361                  * FIXME: Need to optimize delay time. Minimum 1usec pulse is
 362                  *        required by 'JEDEC Standard No.84-A441' (eMMC)
 363                  *        document but real delay time is expected to greater
 364                  *        than 1usec.
 365                  */
 366                 dm_gpio_set_value(&gpio, 0);
 367                 mdelay(10);
 368                 dm_gpio_set_value(&gpio, 1);
 369         }
 370 }
 371
 372 int board_usb_cleanup(int index, enum usb_init_type init)
 373 {
 374 #ifdef CONFIG_USB_DWC3
 375         dwc3_uboot_exit(index);
 376 #endif
 377         return 0;
 378 }