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/arch/board.h>
  17 #include <asm/arch/cpu.h>
  18 #include <asm/arch/dwmmc.h>
  19 #include <asm/arch/gpio.h>
  20 #include <asm/arch/mmc.h>
  21 #include <asm/arch/pinmux.h>
  22 #include <asm/arch/power.h>
  23 #include <power/pmic.h>
  24 #include <asm/arch/sromc.h>
  25 #include <lcd.h>
  26 #include <samsung/misc.h>
  27
  28 DECLARE_GLOBAL_DATA_PTR;
  29
  30 struct local_info {
  31         struct cros_ec_dev *cros_ec_dev;        /* Pointer to cros_ec device */
  32         int cros_ec_err;                        /* Error for cros_ec, 0 if ok */
  33 };
  34
  35 static struct local_info local;
  36
  37 int __exynos_early_init_f(void)
  38 {
  39         return 0;
  40 }
  41 int exynos_early_init_f(void)
  42         __attribute__((weak, alias("__exynos_early_init_f")));
  43
  44 int __exynos_power_init(void)
  45 {
  46         return 0;
  47 }
  48 int exynos_power_init(void)
  49         __attribute__((weak, alias("__exynos_power_init")));
  50
  51 #if defined CONFIG_EXYNOS_TMU
  52 /* Boot Time Thermal Analysis for SoC temperature threshold breach */
  53 static void boot_temp_check(void)
  54 {
  55         int temp;
  56
  57         switch (tmu_monitor(&temp)) {
  58         case TMU_STATUS_NORMAL:
  59                 break;
  60         case TMU_STATUS_TRIPPED:
  61                 /*
  62                  * Status TRIPPED ans WARNING means corresponding threshold
  63                  * breach
  64                  */
  65                 puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
  66                 set_ps_hold_ctrl();
  67                 hang();
  68                 break;
  69         case TMU_STATUS_WARNING:
  70                 puts("EXYNOS_TMU: WARNING! Temperature very high\n");
  71                 break;
  72         case TMU_STATUS_INIT:
  73                 /*
  74                  * TMU_STATUS_INIT means something is wrong with temperature
  75                  * sensing and TMU status was changed back from NORMAL to INIT.
  76                  */
  77                 puts("EXYNOS_TMU: WARNING! Temperature sensing not done\n");
  78                 break;
  79         default:
  80                 debug("EXYNOS_TMU: Unknown TMU state\n");
  81         }
  82 }
  83 #endif
  84
  85 int board_init(void)
  86 {
  87         gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
  88 #if defined CONFIG_EXYNOS_TMU
  89         if (tmu_init(gd->fdt_blob) != TMU_STATUS_NORMAL) {
  90                 debug("%s: Failed to init TMU\n", __func__);
  91                 return -1;
  92         }
  93         boot_temp_check();
  94 #endif
  95
  96 #ifdef CONFIG_EXYNOS_SPI
  97         spi_init();
  98 #endif
  99         return exynos_init();
 100 }
 101
 102 int dram_init(void)
 103 {
 104         int i;
 105         u32 addr;
 106
 107         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 108                 addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
 109                 gd->ram_size += get_ram_size((long *)addr, SDRAM_BANK_SIZE);
 110         }
 111         return 0;
 112 }
 113
 114 void dram_init_banksize(void)
 115 {
 116         int i;
 117         u32 addr, size;
 118
 119         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 120                 addr = CONFIG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
 121                 size = get_ram_size((long *)addr, SDRAM_BANK_SIZE);
 122
 123                 gd->bd->bi_dram[i].start = addr;
 124                 gd->bd->bi_dram[i].size = size;
 125         }
 126 }
 127
 128 static int board_uart_init(void)
 129 {
 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 }
 142
 143 #ifdef CONFIG_BOARD_EARLY_INIT_F
 144 int board_early_init_f(void)
 145 {
 146         int err;
 147
 148         err = board_uart_init();
 149         if (err) {
 150                 debug("UART init failed\n");
 151                 return err;
 152         }
 153
 154 #ifdef CONFIG_SYS_I2C_INIT_BOARD
 155         board_i2c_init(gd->fdt_blob);
 156 #endif
 157
 158         return exynos_early_init_f();
 159 }
 160 #endif
 161
 162 struct cros_ec_dev *board_get_cros_ec_dev(void)
 163 {
 164         return local.cros_ec_dev;
 165 }
 166
 167 #ifdef CONFIG_CROS_EC
 168 static int board_init_cros_ec_devices(const void *blob)
 169 {
 170         local.cros_ec_err = cros_ec_init(blob, &local.cros_ec_dev);
 171         if (local.cros_ec_err)
 172                 return -1;  /* Will report in board_late_init() */
 173
 174         return 0;
 175 }
 176 #endif
 177
 178 #if defined(CONFIG_POWER)
 179 int power_init_board(void)
 180 {
 181         set_ps_hold_ctrl();
 182
 183         return exynos_power_init();
 184 }
 185 #endif
 186
 187 #ifdef CONFIG_OF_CONTROL
 188 #ifdef CONFIG_SMC911X
 189 static int decode_sromc(const void *blob, struct fdt_sromc *config)
 190 {
 191         int err;
 192         int node;
 193
 194         node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS5_SROMC);
 195         if (node < 0) {
 196                 debug("Could not find SROMC node\n");
 197                 return node;
 198         }
 199
 200         config->bank = fdtdec_get_int(blob, node, "bank", 0);
 201         config->width = fdtdec_get_int(blob, node, "width", 2);
 202
 203         err = fdtdec_get_int_array(blob, node, "srom-timing", config->timing,
 204                         FDT_SROM_TIMING_COUNT);
 205         if (err < 0) {
 206                 debug("Could not decode SROMC configuration Error: %s\n",
 207                       fdt_strerror(err));
 208                 return -FDT_ERR_NOTFOUND;
 209         }
 210         return 0;
 211 }
 212 #endif
 213
 214 int board_eth_init(bd_t *bis)
 215 {
 216 #ifdef CONFIG_SMC911X
 217         u32 smc_bw_conf, smc_bc_conf;
 218         struct fdt_sromc config;
 219         fdt_addr_t base_addr;
 220         int node;
 221
 222         node = decode_sromc(gd->fdt_blob, &config);
 223         if (node < 0) {
 224                 debug("%s: Could not find sromc configuration\n", __func__);
 225                 return 0;
 226         }
 227         node = fdtdec_next_compatible(gd->fdt_blob, node, COMPAT_SMSC_LAN9215);
 228         if (node < 0) {
 229                 debug("%s: Could not find lan9215 configuration\n", __func__);
 230                 return 0;
 231         }
 232
 233         /* We now have a node, so any problems from now on are errors */
 234         base_addr = fdtdec_get_addr(gd->fdt_blob, node, "reg");
 235         if (base_addr == FDT_ADDR_T_NONE) {
 236                 debug("%s: Could not find lan9215 address\n", __func__);
 237                 return -1;
 238         }
 239
 240         /* Ethernet needs data bus width of 16 bits */
 241         if (config.width != 2) {
 242                 debug("%s: Unsupported bus width %d\n", __func__,
 243                       config.width);
 244                 return -1;
 245         }
 246         smc_bw_conf = SROMC_DATA16_WIDTH(config.bank)
 247                         | SROMC_BYTE_ENABLE(config.bank);
 248
 249         smc_bc_conf = SROMC_BC_TACS(config.timing[FDT_SROM_TACS])   |
 250                         SROMC_BC_TCOS(config.timing[FDT_SROM_TCOS]) |
 251                         SROMC_BC_TACC(config.timing[FDT_SROM_TACC]) |
 252                         SROMC_BC_TCOH(config.timing[FDT_SROM_TCOH]) |
 253                         SROMC_BC_TAH(config.timing[FDT_SROM_TAH])   |
 254                         SROMC_BC_TACP(config.timing[FDT_SROM_TACP]) |
 255                         SROMC_BC_PMC(config.timing[FDT_SROM_PMC]);
 256
 257         /* Select and configure the SROMC bank */
 258         exynos_pinmux_config(PERIPH_ID_SROMC, config.bank);
 259         s5p_config_sromc(config.bank, smc_bw_conf, smc_bc_conf);
 260         return smc911x_initialize(0, base_addr);
 261 #endif
 262         return 0;
 263 }
 264
 265 #ifdef CONFIG_GENERIC_MMC
 266 int board_mmc_init(bd_t *bis)
 267 {
 268         int ret;
 269
 270 #ifdef CONFIG_SDHCI
 271         /* mmc initializattion for available channels */
 272         ret = exynos_mmc_init(gd->fdt_blob);
 273         if (ret)
 274                 debug("mmc init failed\n");
 275 #endif
 276 #ifdef CONFIG_DWMMC
 277         /* dwmmc initializattion for available channels */
 278         ret = exynos_dwmmc_init(gd->fdt_blob);
 279         if (ret)
 280                 debug("dwmmc init failed\n");
 281 #endif
 282
 283         return ret;
 284 }
 285 #endif
 286
 287 #ifdef CONFIG_DISPLAY_BOARDINFO
 288 int checkboard(void)
 289 {
 290         const char *board_name;
 291
 292         board_name = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
 293         printf("Board: %s\n", board_name ? board_name : "unknown");
 294
 295         return 0;
 296 }
 297 #endif
 298 #endif /* CONFIG_OF_CONTROL */
 299
 300 #ifdef CONFIG_BOARD_LATE_INIT
 301 int board_late_init(void)
 302 {
 303         stdio_print_current_devices();
 304
 305         if (local.cros_ec_err) {
 306                 /* Force console on */
 307                 gd->flags &= ~GD_FLG_SILENT;
 308
 309                 printf("cros-ec communications failure %d\n",
 310                        local.cros_ec_err);
 311                 puts("\nPlease reset with Power+Refresh\n\n");
 312                 panic("Cannot init cros-ec device");
 313                 return -1;
 314         }
 315         return 0;
 316 }
 317 #endif
 318
 319 int arch_early_init_r(void)
 320 {
 321 #ifdef CONFIG_CROS_EC
 322         if (board_init_cros_ec_devices(gd->fdt_blob)) {
 323                 printf("%s: Failed to init EC\n", __func__);
 324                 return 0;
 325         }
 326 #endif
 327
 328         return 0;
 329 }
 330
 331 #ifdef CONFIG_MISC_INIT_R
 332 int misc_init_r(void)
 333 {
 334 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 335         set_board_info();
 336 #endif
 337 #ifdef CONFIG_LCD_MENU
 338         keys_init();
 339         check_boot_mode();
 340 #endif
 341 #ifdef CONFIG_CMD_BMP
 342         if (panel_info.logo_on)
 343                 draw_logo();
 344 #endif
 345         return 0;
 346 }
 347 #endif