board/ti/j721e/evm.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Board specific initialization for J721E EVM
   4  *
   5  * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
   6  *      Lokesh Vutla <lokeshvutla@ti.com>
   7  *
   8  */
   9
  10 #include <common.h>
  11 #include <env.h>
  12 #include <fdt_support.h>
  13 #include <image.h>
  14 #include <init.h>
  15 #include <net.h>
  16 #include <asm/arch/sys_proto.h>
  17 #include <asm/arch/hardware.h>
  18 #include <asm/gpio.h>
  19 #include <asm/io.h>
  20 #include <spl.h>
  21 #include <asm/arch/sys_proto.h>
  22 #include <dm.h>
  23 #include <dm/uclass-internal.h>
  24
  25 #include "../common/board_detect.h"
  26
  27 #define board_is_j721e_som()    (board_ti_k3_is("J721EX-PM1-SOM") || \
  28                                  board_ti_k3_is("J721EX-PM2-SOM"))
  29
  30 /* Max number of MAC addresses that are parsed/processed per daughter card */
  31 #define DAUGHTER_CARD_NO_OF_MAC_ADDR    8
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  34
  35 int board_init(void)
  36 {
  37         return 0;
  38 }
  39
  40 int dram_init(void)
  41 {
  42 #ifdef CONFIG_PHYS_64BIT
  43         gd->ram_size = 0x100000000;
  44 #else
  45         gd->ram_size = 0x80000000;
  46 #endif
  47
  48         return 0;
  49 }
  50
  51 ulong board_get_usable_ram_top(ulong total_size)
  52 {
  53 #ifdef CONFIG_PHYS_64BIT
  54         /* Limit RAM used by U-Boot to the DDR low region */
  55         if (gd->ram_top > 0x100000000)
  56                 return 0x100000000;
  57 #endif
  58
  59         return gd->ram_top;
  60 }
  61
  62 int dram_init_banksize(void)
  63 {
  64         /* Bank 0 declares the memory available in the DDR low region */
  65         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
  66         gd->bd->bi_dram[0].size = 0x80000000;
  67         gd->ram_size = 0x80000000;
  68
  69 #ifdef CONFIG_PHYS_64BIT
  70         /* Bank 1 declares the memory available in the DDR high region */
  71         gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1;
  72         gd->bd->bi_dram[1].size = 0x80000000;
  73         gd->ram_size = 0x100000000;
  74 #endif
  75
  76         return 0;
  77 }
  78
  79 #ifdef CONFIG_SPL_LOAD_FIT
  80 int board_fit_config_name_match(const char *name)
  81 {
  82         if (!strcmp(name, "k3-j721e-common-proc-board"))
  83                 return 0;
  84
  85         return -1;
  86 }
  87 #endif
  88
  89 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
  90 int ft_board_setup(void *blob, bd_t *bd)
  91 {
  92         int ret;
  93
  94         ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", "sram@70000000");
  95         if (ret)
  96                 printf("%s: fixing up msmc ram failed %d\n", __func__, ret);
  97
  98         return ret;
  99 }
 100 #endif
 101
 102 int do_board_detect(void)
 103 {
 104         int ret;
 105
 106         ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
 107                                          CONFIG_EEPROM_CHIP_ADDRESS);
 108         if (ret)
 109                 pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
 110                        CONFIG_EEPROM_CHIP_ADDRESS, ret);
 111
 112         return ret;
 113 }
 114
 115 int checkboard(void)
 116 {
 117         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 118
 119         if (do_board_detect())
 120                 /* EEPROM not populated */
 121                 printf("Board: %s rev %s\n", "J721EX-PM1-SOM", "E2");
 122         else
 123                 printf("Board: %s rev %s\n", ep->name, ep->version);
 124
 125         return 0;
 126 }
 127
 128 static void setup_board_eeprom_env(void)
 129 {
 130         char *name = "j721e";
 131
 132         if (do_board_detect())
 133                 goto invalid_eeprom;
 134
 135         if (board_is_j721e_som())
 136                 name = "j721e";
 137         else
 138                 printf("Unidentified board claims %s in eeprom header\n",
 139                        board_ti_get_name());
 140
 141 invalid_eeprom:
 142         set_board_info_env_am6(name);
 143 }
 144
 145 static void setup_serial(void)
 146 {
 147         struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
 148         unsigned long board_serial;
 149         char *endp;
 150         char serial_string[17] = { 0 };
 151
 152         if (env_get("serial#"))
 153                 return;
 154
 155         board_serial = simple_strtoul(ep->serial, &endp, 16);
 156         if (*endp != '\0') {
 157                 pr_err("Error: Can't set serial# to %s\n", ep->serial);
 158                 return;
 159         }
 160
 161         snprintf(serial_string, sizeof(serial_string), "%016lx", board_serial);
 162         env_set("serial#", serial_string);
 163 }
 164
 165 /*
 166  * Declaration of daughtercards to probe. Note that when adding more
 167  * cards they should be grouped by the 'i2c_addr' field to allow for a
 168  * more efficient probing process.
 169  */
 170 static const struct {
 171         u8 i2c_addr;            /* I2C address of card EEPROM */
 172         char *card_name;        /* EEPROM-programmed card name */
 173         char *dtbo_name;        /* Device tree overlay to apply */
 174         u8 eth_offset;          /* ethXaddr MAC address index offset */
 175 } ext_cards[] = {
 176         {
 177                 0x51,
 178                 "J7X-BASE-CPB",
 179                 "",             /* No dtbo for this board */
 180                 0,
 181         },
 182         {
 183                 0x52,
 184                 "J7X-INFOTAN-EXP",
 185                 "",             /* No dtbo for this board */
 186                 0,
 187         },
 188         {
 189                 0x52,
 190                 "J7X-GESI-EXP",
 191                 "",             /* No dtbo for this board */
 192                 5,              /* Start populating from eth5addr */
 193         },
 194         {
 195                 0x54,
 196                 "J7X-VSC8514-ETH",
 197                 "",             /* No dtbo for this board */
 198                 1,              /* Start populating from eth1addr */
 199         },
 200 };
 201
 202 static bool daughter_card_detect_flags[ARRAY_SIZE(ext_cards)];
 203
 204 const char *board_fit_get_additionnal_images(int index, const char *type)
 205 {
 206         int i, j;
 207
 208         if (strcmp(type, FIT_FDT_PROP))
 209                 return NULL;
 210
 211         j = 0;
 212         for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
 213                 if (daughter_card_detect_flags[i]) {
 214                         if (j == index) {
 215                                 /*
 216                                  * Return dtbo name only if populated,
 217                                  * otherwise stop parsing here.
 218                                  */
 219                                 if (strlen(ext_cards[i].dtbo_name))
 220                                         return ext_cards[i].dtbo_name;
 221                                 else
 222                                         return NULL;
 223                         };
 224
 225                         j++;
 226                 }
 227         }
 228
 229         return NULL;
 230 }
 231
 232 static int probe_daughtercards(void)
 233 {
 234         char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
 235         bool eeprom_read_success;
 236         struct ti_am6_eeprom ep;
 237         u8 previous_i2c_addr;
 238         u8 mac_addr_cnt;
 239         int i;
 240         int ret;
 241
 242         /* Mark previous I2C address variable as not populated */
 243         previous_i2c_addr = 0xff;
 244
 245         /* No EEPROM data was read yet */
 246         eeprom_read_success = false;
 247
 248         /* Iterate through list of daughtercards */
 249         for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
 250                 /* Obtain card-specific I2C address */
 251                 u8 i2c_addr = ext_cards[i].i2c_addr;
 252
 253                 /* Read card EEPROM if not already read previously */
 254                 if (i2c_addr != previous_i2c_addr) {
 255                         /* Store I2C address so we can avoid reading twice */
 256                         previous_i2c_addr = i2c_addr;
 257
 258                         /* Get and parse the daughter card EEPROM record */
 259                         ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS,
 260                                                     i2c_addr,
 261                                                     &ep,
 262                                                     (char **)mac_addr,
 263                                                     DAUGHTER_CARD_NO_OF_MAC_ADDR,
 264                                                     &mac_addr_cnt);
 265                         if (ret) {
 266                                 debug("%s: No daughtercard EEPROM at 0x%02x found %d\n",
 267                                       __func__, i2c_addr, ret);
 268                                 eeprom_read_success = false;
 269                                 /* Skip to the next daughtercard to probe */
 270                                 continue;
 271                         }
 272
 273                         /* EEPROM read successful, okay to further process. */
 274                         eeprom_read_success = true;
 275                 }
 276
 277                 /* Only continue processing if EEPROM data was read */
 278                 if (!eeprom_read_success)
 279                         continue;
 280
 281                 /* Only process the parsed data if we found a match */
 282                 if (strncmp(ep.name, ext_cards[i].card_name, sizeof(ep.name)))
 283                         continue;
 284
 285                 printf("Detected: %s rev %s\n", ep.name, ep.version);
 286                 daughter_card_detect_flags[i] = true;
 287
 288 #ifndef CONFIG_SPL_BUILD
 289                 int j;
 290                 /*
 291                  * Populate any MAC addresses from daughtercard into the U-Boot
 292                  * environment, starting with a card-specific offset so we can
 293                  * have multiple ext_cards contribute to the MAC pool in a well-
 294                  * defined manner.
 295                  */
 296                 for (j = 0; j < mac_addr_cnt; j++) {
 297                         if (!is_valid_ethaddr((u8 *)mac_addr[j]))
 298                                 continue;
 299
 300                         eth_env_set_enetaddr_by_index("eth",
 301                                                       ext_cards[i].eth_offset + j,
 302                                                       (uchar *)mac_addr[j]);
 303                 }
 304 #endif
 305         }
 306 #ifndef CONFIG_SPL_BUILD
 307         char name_overlays[1024] = { 0 };
 308
 309         for (i = 0; i < ARRAY_SIZE(ext_cards); i++) {
 310                 if (!daughter_card_detect_flags[i])
 311                         continue;
 312
 313                 /* Skip if no overlays are to be added */
 314                 if (!strlen(ext_cards[i].dtbo_name))
 315                         continue;
 316
 317                 /*
 318                  * Make sure we are not running out of buffer space by checking
 319                  * if we can fit the new overlay, a trailing space to be used
 320                  * as a separator, plus the terminating zero.
 321                  */
 322                 if (strlen(name_overlays) + strlen(ext_cards[i].dtbo_name) + 2 >
 323                     sizeof(name_overlays))
 324                         return -ENOMEM;
 325
 326                 /* Append to our list of overlays */
 327                 strcat(name_overlays, ext_cards[i].dtbo_name);
 328                 strcat(name_overlays, " ");
 329         }
 330
 331         /* Apply device tree overlay(s) to the U-Boot environment, if any */
 332         if (strlen(name_overlays))
 333                 return env_set("name_overlays", name_overlays);
 334 #endif
 335
 336         return 0;
 337 }
 338
 339 int board_late_init(void)
 340 {
 341         setup_board_eeprom_env();
 342         setup_serial();
 343
 344         /* Check for and probe any plugged-in daughtercards */
 345         probe_daughtercards();
 346
 347         return 0;
 348 }
 349
 350 void spl_board_init(void)
 351 {
 352 #if defined(CONFIG_ESM_K3) || defined(CONFIG_ESM_PMIC)
 353         struct udevice *dev;
 354         int ret;
 355 #endif
 356
 357         probe_daughtercards();
 358
 359 #ifdef CONFIG_ESM_K3
 360         if (board_ti_k3_is("J721EX-PM2-SOM")) {
 361                 ret = uclass_get_device_by_driver(UCLASS_MISC,
 362                                                   DM_GET_DRIVER(k3_esm), &dev);
 363                 if (ret)
 364                         printf("ESM init failed: %d\n", ret);
 365         }
 366 #endif
 367
 368 #ifdef CONFIG_ESM_PMIC
 369         if (board_ti_k3_is("J721EX-PM2-SOM")) {
 370                 ret = uclass_get_device_by_driver(UCLASS_MISC,
 371                                                   DM_GET_DRIVER(pmic_esm),
 372                                                   &dev);
 373                 if (ret)
 374                         printf("ESM PMIC init failed: %d\n", ret);
 375         }
 376 #endif
 377 }