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
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 __weak int exynos_early_init_f(void)
  34 {
  35         return 0;
  36 }
  37
  38 __weak int exynos_power_init(void)
  39 {
  40         return 0;
  41 }
  42
  43 #if defined CONFIG_EXYNOS_TMU
  44 /* Boot Time Thermal Analysis for SoC temperature threshold breach */
  45 static void boot_temp_check(void)
  46 {
  47         int temp;
  48
  49         switch (tmu_monitor(&temp)) {
  50         case TMU_STATUS_NORMAL:
  51                 break;
  52         case TMU_STATUS_TRIPPED:
  53                 /*
  54                  * Status TRIPPED ans WARNING means corresponding threshold
  55                  * breach
  56                  */
  57                 puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
  58                 set_ps_hold_ctrl();
  59                 hang();
  60                 break;
  61         case TMU_STATUS_WARNING:
  62                 puts("EXYNOS_TMU: WARNING! Temperature very high\n");
  63                 break;
  64         case TMU_STATUS_INIT:
  65                 /*
  66                  * TMU_STATUS_INIT means something is wrong with temperature
  67                  * sensing and TMU status was changed back from NORMAL to INIT.
  68                  */
  69                 puts("EXYNOS_TMU: WARNING! Temperature sensing not done\n");
  70                 break;
  71         default:
  72                 debug("EXYNOS_TMU: Unknown TMU state\n");
  73         }
  74 }
  75 #endif
  76
  77 int board_init(void)
  78 {
  79         gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
  80 #if defined CONFIG_EXYNOS_TMU
  81         if (tmu_init(gd->fdt_blob) != TMU_STATUS_NORMAL) {
  82                 debug("%s: Failed to init TMU\n", __func__);
  83                 return -1;
  84         }
  85         boot_temp_check();
  86 #endif
  87 #ifdef CONFIG_TZSW_RESERVED_DRAM_SIZE
  88         /* The last few MB of memory can be reserved for secure firmware */
  89         ulong size = CONFIG_TZSW_RESERVED_DRAM_SIZE;
  90
  91         gd->ram_size -= size;
  92         gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= size;
  93 #endif
  94         return exynos_init();
  95 }
  96
  97 int dram_init(void)
  98 {
  99         unsigned int i;
 100         u32 addr;
 101
 102         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 103                 addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
 104                 gd->ram_size += get_ram_size((long *)addr, SDRAM_BANK_SIZE);
 105         }
 106         return 0;
 107 }
 108
 109 void dram_init_banksize(void)
 110 {
 111         unsigned int i;
 112         u32 addr, size;
 113
 114         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 115                 addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
 116                 size = get_ram_size((long *)addr, SDRAM_BANK_SIZE);
 117
 118                 gd->bd->bi_dram[i].start = addr;
 119                 gd->bd->bi_dram[i].size = size;
 120         }
 121 }
 122
 123 static int board_uart_init(void)
 124 {
 125         int err, uart_id, ret = 0;
 126
 127         for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) {
 128                 err = exynos_pinmux_config(uart_id, PINMUX_FLAG_NONE);
 129                 if (err) {
 130                         debug("UART%d not configured\n",
 131                               (uart_id - PERIPH_ID_UART0));
 132                         ret |= err;
 133                 }
 134         }
 135         return ret;
 136 }
 137
 138 #ifdef CONFIG_BOARD_EARLY_INIT_F
 139 int board_early_init_f(void)
 140 {
 141         int err;
 142 #ifdef CONFIG_BOARD_TYPES
 143         set_board_type();
 144 #endif
 145         err = board_uart_init();
 146         if (err) {
 147                 debug("UART init failed\n");
 148                 return err;
 149         }
 150
 151 #ifdef CONFIG_SYS_I2C_INIT_BOARD
 152         board_i2c_init(gd->fdt_blob);
 153 #endif
 154
 155 #if defined(CONFIG_EXYNOS_FB)
 156         /*
 157          * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs
 158          * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix,
 159          * to reserve frame-buffer memory at a very early stage. So, we need
 160          * to fill panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix
 161          * before lcd_setmem() is called.
 162          */
 163         err = exynos_lcd_early_init(gd->fdt_blob);
 164         if (err) {
 165                 debug("LCD early init failed\n");
 166                 return err;
 167         }
 168 #endif
 169
 170         return exynos_early_init_f();
 171 }
 172 #endif
 173
 174 #if defined(CONFIG_POWER) || defined(CONFIG_DM_PMIC)
 175 int power_init_board(void)
 176 {
 177         set_ps_hold_ctrl();
 178
 179         return exynos_power_init();
 180 }
 181 #endif
 182
 183 #ifdef CONFIG_SMC911X
 184 static int decode_sromc(const void *blob, struct fdt_sromc *config)
 185 {
 186         int err;
 187         int node;
 188
 189         node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC);
 190         if (node < 0) {
 191                 debug("Could not find SROMC node\n");
 192                 return node;
 193         }
 194
 195         config->bank = fdtdec_get_int(blob, node, "bank", 0);
 196         config->width = fdtdec_get_int(blob, node, "width", 2);
 197
 198         err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing,
 199                         FDT_SROM_TIMING_COUNT);
 200         if (err < 0) {
 201                 debug("Could not decode SROMC configuration Error: %s\n",
 202                       fdt_strerror(err));
 203                 return -FDT_ERR_NOTFOUND;
 204         }
 205         return 0;
 206 }
 207 #endif
 208
 209 int board_eth_init(bd_t *bis)
 210 {
 211 #ifdef CONFIG_SMC911X
 212         u32 smc_bw_conf, smc_bc_conf;
 213         struct fdt_sromc config;
 214         fdt_addr_t base_addr;
 215         int node;
 216
 217         node = decode_sromc(gd->fdt_blob, &config);
 218         if (node < 0) {
 219                 debug("%s: Could not find sromc configuration\n", __func__);
 220                 return 0;
 221         }
 222         node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215);
 223         if (node < 0) {
 224                 debug("%s: Could not find lan9215 configuration\n", __func__);
 225                 return 0;
 226         }
 227
 228         /* We now have a node, so any problems from now on are errors */
 229         base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg");
 230         if (base_addr == FDT_ADDR_T_NONE) {
 231                 debug("%s: Could not find lan9215 address\n", __func__);
 232                 return -1;
 233         }
 234
 235         /* Ethernet needs data bus width of 16 bits */
 236         if (config.width != 2) {
 237                 debug("%s: Unsupported bus width %d\n", __func__,
 238                       config.width);
 239                 return -1;
 240         }
 241         smc_bw_conf = SROMC_DATA16_WIDTH(config.bank)
 242                         | SROMC_BYTE_ENABLE(config.bank);
 243
 244         smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS])   |
 245                         SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) |
 246                         SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) |
 247                         SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) |
 248                         SROMC_BC_TAH(config.timing[FDT_SROM_TAH])   |
 249                         SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) |
 250                         SROMC_BC_PMC(config.timing[FDT_SROM_PMC]);
 251
 252         /* Select and configure the SROMC bank */
 253         exynos_pinmux_config(PERIPH_ID_SROMC, config.bank);
 254         s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf);
 255         return smc911x_initialize(0, base_addr);
 256 #endif
 257         return 0;
 258 }
 259
 260 #ifdef CONFIG_GENERIC_MMC
 261 static int init_mmc(void)
 262 {
 263 #ifdef CONFIG_SDHCI
 264         return exynos_mmc_init(gd->fdt_blob);
 265 #else
 266         return 0;
 267 #endif
 268 }
 269
 270 static int init_dwmmc(void)
 271 {
 272 #ifdef CONFIG_DWMMC
 273         return exynos_dwmmc_init(gd->fdt_blob);
 274 #else
 275         return 0;
 276 #endif
 277 }
 278
 279 int board_mmc_init(bd_t *bis)
 280 {
 281         int ret;
 282
 283         if (get_boot_mode() == BOOT_MODE_SD) {
 284                 ret = init_mmc();
 285                 ret |= init_dwmmc();
 286         } else {
 287                 ret = init_dwmmc();
 288                 ret |= init_mmc();
 289         }
 290
 291         if (ret)
 292                 debug("mmc init failed\n");
 293
 294         return ret;
 295 }
 296 #endif
 297
 298 #ifdef CONFIG_DISPLAY_BOARDINFO
 299 int checkboard(void)
 300 {
 301         const char *board_info;
 302
 303         board_info = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
 304         printf("Board: %s\n", board_info ? board_info : "unknown");
 305 #ifdef CONFIG_BOARD_TYPES
 306         board_info = get_board_type();
 307
 308         printf("Model: %s\n", board_info ? board_info : "unknown");
 309 #endif
 310         return 0;
 311 }
 312 #endif
 313
 314 #ifdef CONFIG_BOARD_LATE_INIT
 315 int board_late_init(void)
 316 {
 317         stdio_print_current_devices();
 318
 319         if (cros_ec_get_error()) {
 320                 /* Force console on */
 321                 gd->flags &= ~GD_FLG_SILENT;
 322
 323                 printf("cros-ec communications failure %d\n",
 324                        cros_ec_get_error());
 325                 puts("\nPlease reset with Power+Refresh\n\n");
 326                 panic("Cannot init cros-ec device");
 327                 return -1;
 328         }
 329         return 0;
 330 }
 331 #endif
 332
 333 #ifdef CONFIG_MISC_INIT_R
 334 int misc_init_r(void)
 335 {
 336 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 337         set_board_info();
 338 #endif
 339 #ifdef CONFIG_LCD_MENU
 340         keys_init();
 341         check_boot_mode();
 342 #endif
 343 #ifdef CONFIG_CMD_BMP
 344         if (panel_info.logo_on)
 345                 draw_logo();
 346 #endif
 347         return 0;
 348 }
 349 #endif
 350
 351 void reset_misc(void)
 352 {
 353         struct gpio_desc gpio = {};
 354         int node;
 355
 356         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
 357                         "samsung,emmc-reset");
 358         if (node < 0)
 359                 return;
 360
 361         gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio,
 362                                    GPIOD_IS_OUT);
 363
 364         if (dm_gpio_is_valid(&gpio)) {
 365                 /*
 366                  * Reset eMMC
 367                  *
 368                  * FIXME: Need to optimize delay time. Minimum 1usec pulse is
 369                  *        required by 'JEDEC Standard No.84-A441' (eMMC)
 370                  *        document but real delay time is expected to greater
 371                  *        than 1usec.
 372                  */
 373                 dm_gpio_set_value(&gpio, 0);
 374                 mdelay(10);
 375                 dm_gpio_set_value(&gpio, 1);
 376         }
 377 }
 378
 379 int board_usb_cleanup(int index, enum usb_init_type init)
 380 {
 381 #ifdef CONFIG_USB_DWC3
 382         dwc3_uboot_exit(index);
 383 #endif
 384         return 0;
 385 }