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 void 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
 125 static 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
 145 int 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)
 166 int power_init_board(void)
 167 {
 168         set_ps_hold_ctrl();
 169
 170         return exynos_power_init();
 171 }
 172 #endif
 173
 174 #ifdef CONFIG_SMC911X
 175 static 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
 200 int 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
 252 static 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
 261 static 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
 270 int 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
 290 int 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
 306 int 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
 325 int 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
 342 void 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
 370 int 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 }