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