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 #if defined(CONFIG_EXYNOS_FB)
 162         /*
 163          * board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs
 164          * panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix,
 165          * to reserve frame-buffer memory at a very early stage. So, we need
 166          * to fill panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix
 167          * before lcd_setmem() is called.
 168          */
 169         err = exynos_lcd_early_init(gd->fdt_blob);
 170         if (err) {
 171                 debug("LCD early init failed\n");
 172                 return err;
 173         }
 174 #endif
 175
 176         return exynos_early_init_f();
 177 }
 178 #endif
 179
 180 #if defined(CONFIG_POWER) || defined(CONFIG_DM_PMIC)
 181 int power_init_board(void)
 182 {
 183         set_ps_hold_ctrl();
 184
 185         return exynos_power_init();
 186 }
 187 #endif
 188
 189 #ifdef CONFIG_SMC911X
 190 static int decode_sromc(const void *blob, struct fdt_sromc *config)
 191 {
 192         int err;
 193         int node;
 194
 195         node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC);
 196         if (node < 0) {
 197                 debug("Could not find SROMC node\n");
 198                 return node;
 199         }
 200
 201         config->bank = fdtdec_get_int(blob, node, "bank", 0);
 202         config->width = fdtdec_get_int(blob, node, "width", 2);
 203
 204         err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing,
 205                         FDT_SROM_TIMING_COUNT);
 206         if (err < 0) {
 207                 debug("Could not decode SROMC configuration Error: %s\n",
 208                       fdt_strerror(err));
 209                 return -FDT_ERR_NOTFOUND;
 210         }
 211         return 0;
 212 }
 213 #endif
 214
 215 int board_eth_init(bd_t *bis)
 216 {
 217 #ifdef CONFIG_SMC911X
 218         u32 smc_bw_conf, smc_bc_conf;
 219         struct fdt_sromc config;
 220         fdt_addr_t base_addr;
 221         int node;
 222
 223         node = decode_sromc(gd->fdt_blob, &config);
 224         if (node < 0) {
 225                 debug("%s: Could not find sromc configuration\n", __func__);
 226                 return 0;
 227         }
 228         node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215);
 229         if (node < 0) {
 230                 debug("%s: Could not find lan9215 configuration\n", __func__);
 231                 return 0;
 232         }
 233
 234         /* We now have a node, so any problems from now on are errors */
 235         base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg");
 236         if (base_addr == FDT_ADDR_T_NONE) {
 237                 debug("%s: Could not find lan9215 address\n", __func__);
 238                 return -1;
 239         }
 240
 241         /* Ethernet needs data bus width of 16 bits */
 242         if (config.width != 2) {
 243                 debug("%s: Unsupported bus width %d\n", __func__,
 244                       config.width);
 245                 return -1;
 246         }
 247         smc_bw_conf = SROMC_DATA16_WIDTH(config.bank)
 248                         | SROMC_BYTE_ENABLE(config.bank);
 249
 250         smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS])   |
 251                         SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) |
 252                         SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) |
 253                         SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) |
 254                         SROMC_BC_TAH(config.timing[FDT_SROM_TAH])   |
 255                         SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) |
 256                         SROMC_BC_PMC(config.timing[FDT_SROM_PMC]);
 257
 258         /* Select and configure the SROMC bank */
 259         exynos_pinmux_config(PERIPH_ID_SROMC, config.bank);
 260         s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf);
 261         return smc911x_initialize(0, base_addr);
 262 #endif
 263         return 0;
 264 }
 265
 266 #ifdef CONFIG_GENERIC_MMC
 267 static int init_mmc(void)
 268 {
 269 #ifdef CONFIG_SDHCI
 270         return exynos_mmc_init(gd->fdt_blob);
 271 #else
 272         return 0;
 273 #endif
 274 }
 275
 276 static int init_dwmmc(void)
 277 {
 278 #ifdef CONFIG_DWMMC
 279         return exynos_dwmmc_init(gd->fdt_blob);
 280 #else
 281         return 0;
 282 #endif
 283 }
 284
 285 int board_mmc_init(bd_t *bis)
 286 {
 287         int ret;
 288
 289         if (get_boot_mode() == BOOT_MODE_SD) {
 290                 ret = init_mmc();
 291                 ret |= init_dwmmc();
 292         } else {
 293                 ret = init_dwmmc();
 294                 ret |= init_mmc();
 295         }
 296
 297         if (ret)
 298                 debug("mmc init failed\n");
 299
 300         return ret;
 301 }
 302 #endif
 303
 304 #ifdef CONFIG_DISPLAY_BOARDINFO
 305 int checkboard(void)
 306 {
 307         const char *board_info;
 308
 309         board_info = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
 310         printf("Board: %s\n", board_info ? board_info : "unknown");
 311 #ifdef CONFIG_BOARD_TYPES
 312         board_info = get_board_type();
 313         if (board_info)
 314                 printf("Type:  %s\n", board_info);
 315 #endif
 316         return 0;
 317 }
 318 #endif
 319
 320 #ifdef CONFIG_BOARD_LATE_INIT
 321 int board_late_init(void)
 322 {
 323         stdio_print_current_devices();
 324
 325         if (cros_ec_get_error()) {
 326                 /* Force console on */
 327                 gd->flags &= ~GD_FLG_SILENT;
 328
 329                 printf("cros-ec communications failure %d\n",
 330                        cros_ec_get_error());
 331                 puts("\nPlease reset with Power+Refresh\n\n");
 332                 panic("Cannot init cros-ec device");
 333                 return -1;
 334         }
 335         return 0;
 336 }
 337 #endif
 338
 339 #ifdef CONFIG_MISC_INIT_R
 340 int misc_init_r(void)
 341 {
 342 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 343         set_board_info();
 344 #endif
 345 #ifdef CONFIG_LCD_MENU
 346         keys_init();
 347         check_boot_mode();
 348 #endif
 349 #ifdef CONFIG_CMD_BMP
 350         if (panel_info.logo_on)
 351                 draw_logo();
 352 #endif
 353         return 0;
 354 }
 355 #endif
 356
 357 void reset_misc(void)
 358 {
 359         struct gpio_desc gpio = {};
 360         int node;
 361
 362         node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
 363                         "samsung,emmc-reset");
 364         if (node < 0)
 365                 return;
 366
 367         gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio,
 368                                    GPIOD_IS_OUT);
 369
 370         if (dm_gpio_is_valid(&gpio)) {
 371                 /*
 372                  * Reset eMMC
 373                  *
 374                  * FIXME: Need to optimize delay time. Minimum 1usec pulse is
 375                  *        required by 'JEDEC Standard No.84-A441' (eMMC)
 376                  *        document but real delay time is expected to greater
 377                  *        than 1usec.
 378                  */
 379                 dm_gpio_set_value(&gpio, 0);
 380                 mdelay(10);
 381                 dm_gpio_set_value(&gpio, 1);
 382         }
 383 }
 384
 385 int board_usb_cleanup(int index, enum usb_init_type init)
 386 {
 387 #ifdef CONFIG_USB_DWC3
 388         dwc3_uboot_exit(index);
 389 #endif
 390         return 0;
 391 }