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