Lokesh Vutla | 029f921 | 2018-08-27 15:59:06 +0530 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Board specific initialization for AM654 EVM |
| 4 | * |
| 5 | * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/ |
| 6 | * Lokesh Vutla <lokeshvutla@ti.com> |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | #include <common.h> |
Andreas Dannenberg | 63f5c85 | 2019-06-04 18:08:26 -0500 | [diff] [blame] | 11 | #include <dm.h> |
Simon Glass | 2dc9c34 | 2020-05-10 11:40:01 -0600 | [diff] [blame] | 12 | #include <fdt_support.h> |
| 13 | #include <image.h> |
Simon Glass | 6980b6b | 2019-11-14 12:57:45 -0700 | [diff] [blame] | 14 | #include <init.h> |
Simon Glass | 274e0b0 | 2020-05-10 11:39:56 -0600 | [diff] [blame] | 15 | #include <net.h> |
Andreas Dannenberg | 63f5c85 | 2019-06-04 18:08:26 -0500 | [diff] [blame] | 16 | #include <asm/arch/sys_proto.h> |
| 17 | #include <asm/arch/hardware.h> |
| 18 | #include <asm/gpio.h> |
Lokesh Vutla | 029f921 | 2018-08-27 15:59:06 +0530 | [diff] [blame] | 19 | #include <asm/io.h> |
Andreas Dannenberg | 63f5c85 | 2019-06-04 18:08:26 -0500 | [diff] [blame] | 20 | #include <asm/omap_common.h> |
Simon Glass | 5e6201b | 2019-08-01 09:46:51 -0600 | [diff] [blame] | 21 | #include <env.h> |
Lokesh Vutla | 029f921 | 2018-08-27 15:59:06 +0530 | [diff] [blame] | 22 | #include <spl.h> |
Lokesh Vutla | 79de9ef | 2019-03-08 11:47:35 +0530 | [diff] [blame] | 23 | #include <asm/arch/sys_proto.h> |
Lokesh Vutla | 029f921 | 2018-08-27 15:59:06 +0530 | [diff] [blame] | 24 | |
Andreas Dannenberg | 63f5c85 | 2019-06-04 18:08:26 -0500 | [diff] [blame] | 25 | #include "../common/board_detect.h" |
| 26 | |
| 27 | #define board_is_am65x_base_board() board_ti_is("AM6-COMPROCEVM") |
| 28 | |
| 29 | /* Daughter card presence detection signals */ |
| 30 | enum { |
| 31 | AM65X_EVM_APP_BRD_DET, |
| 32 | AM65X_EVM_LCD_BRD_DET, |
| 33 | AM65X_EVM_SERDES_BRD_DET, |
| 34 | AM65X_EVM_HDMI_GPMC_BRD_DET, |
| 35 | AM65X_EVM_BRD_DET_COUNT, |
| 36 | }; |
| 37 | |
| 38 | /* Max number of MAC addresses that are parsed/processed per daughter card */ |
| 39 | #define DAUGHTER_CARD_NO_OF_MAC_ADDR 8 |
| 40 | |
Lokesh Vutla | 029f921 | 2018-08-27 15:59:06 +0530 | [diff] [blame] | 41 | DECLARE_GLOBAL_DATA_PTR; |
| 42 | |
| 43 | int board_init(void) |
| 44 | { |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | int dram_init(void) |
| 49 | { |
| 50 | #ifdef CONFIG_PHYS_64BIT |
| 51 | gd->ram_size = 0x100000000; |
| 52 | #else |
| 53 | gd->ram_size = 0x80000000; |
| 54 | #endif |
| 55 | |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | ulong board_get_usable_ram_top(ulong total_size) |
| 60 | { |
| 61 | #ifdef CONFIG_PHYS_64BIT |
| 62 | /* Limit RAM used by U-Boot to the DDR low region */ |
| 63 | if (gd->ram_top > 0x100000000) |
| 64 | return 0x100000000; |
| 65 | #endif |
| 66 | |
| 67 | return gd->ram_top; |
| 68 | } |
| 69 | |
| 70 | int dram_init_banksize(void) |
| 71 | { |
| 72 | /* Bank 0 declares the memory available in the DDR low region */ |
| 73 | gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; |
| 74 | gd->bd->bi_dram[0].size = 0x80000000; |
Jan Kiszka | 7ce99f7 | 2020-05-18 07:57:22 +0200 | [diff] [blame] | 75 | gd->ram_size = 0x80000000; |
Lokesh Vutla | 029f921 | 2018-08-27 15:59:06 +0530 | [diff] [blame] | 76 | |
| 77 | #ifdef CONFIG_PHYS_64BIT |
| 78 | /* Bank 1 declares the memory available in the DDR high region */ |
| 79 | gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1; |
| 80 | gd->bd->bi_dram[1].size = 0x80000000; |
Jan Kiszka | 7ce99f7 | 2020-05-18 07:57:22 +0200 | [diff] [blame] | 81 | gd->ram_size = 0x100000000; |
Lokesh Vutla | 029f921 | 2018-08-27 15:59:06 +0530 | [diff] [blame] | 82 | #endif |
| 83 | |
| 84 | return 0; |
| 85 | } |
Lokesh Vutla | 8bfaf01 | 2018-08-27 15:59:08 +0530 | [diff] [blame] | 86 | |
| 87 | #ifdef CONFIG_SPL_LOAD_FIT |
| 88 | int board_fit_config_name_match(const char *name) |
| 89 | { |
| 90 | #ifdef CONFIG_TARGET_AM654_A53_EVM |
| 91 | if (!strcmp(name, "k3-am654-base-board")) |
| 92 | return 0; |
| 93 | #endif |
| 94 | |
| 95 | return -1; |
| 96 | } |
| 97 | #endif |
Lokesh Vutla | 79de9ef | 2019-03-08 11:47:35 +0530 | [diff] [blame] | 98 | |
| 99 | #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) |
| 100 | int ft_board_setup(void *blob, bd_t *bd) |
| 101 | { |
| 102 | int ret; |
| 103 | |
| 104 | ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", "sram@70000000"); |
Andrew F. Davis | 6c43b52 | 2019-09-17 17:15:40 -0400 | [diff] [blame] | 105 | if (ret) { |
Lokesh Vutla | 79de9ef | 2019-03-08 11:47:35 +0530 | [diff] [blame] | 106 | printf("%s: fixing up msmc ram failed %d\n", __func__, ret); |
Andrew F. Davis | 6c43b52 | 2019-09-17 17:15:40 -0400 | [diff] [blame] | 107 | return ret; |
| 108 | } |
| 109 | |
| 110 | #if defined(CONFIG_TI_SECURE_DEVICE) |
Andrew F. Davis | 5e7dc6c | 2020-06-09 15:14:22 -0400 | [diff] [blame] | 111 | /* Make Crypto HW reserved for secure world use */ |
| 112 | ret = fdt_disable_node(blob, "/interconnect@100000/crypto@4E00000"); |
Andrew F. Davis | 7e13f2c | 2020-01-07 18:12:40 -0500 | [diff] [blame] | 113 | if (ret) |
Andrew F. Davis | 5e7dc6c | 2020-06-09 15:14:22 -0400 | [diff] [blame] | 114 | printf("%s: disabling SA2UL failed %d\n", __func__, ret); |
Andrew F. Davis | 6c43b52 | 2019-09-17 17:15:40 -0400 | [diff] [blame] | 115 | #endif |
Lokesh Vutla | 79de9ef | 2019-03-08 11:47:35 +0530 | [diff] [blame] | 116 | |
Andrew F. Davis | 6c43b52 | 2019-09-17 17:15:40 -0400 | [diff] [blame] | 117 | return 0; |
Lokesh Vutla | 79de9ef | 2019-03-08 11:47:35 +0530 | [diff] [blame] | 118 | } |
| 119 | #endif |
Andreas Dannenberg | 63f5c85 | 2019-06-04 18:08:26 -0500 | [diff] [blame] | 120 | |
| 121 | int do_board_detect(void) |
| 122 | { |
| 123 | int ret; |
| 124 | |
| 125 | ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS, |
| 126 | CONFIG_EEPROM_CHIP_ADDRESS); |
| 127 | if (ret) |
| 128 | pr_err("Reading on-board EEPROM at 0x%02x failed %d\n", |
| 129 | CONFIG_EEPROM_CHIP_ADDRESS, ret); |
| 130 | |
| 131 | return ret; |
| 132 | } |
| 133 | |
Lokesh Vutla | 1ffb8c1 | 2019-09-27 13:32:12 +0530 | [diff] [blame] | 134 | int checkboard(void) |
| 135 | { |
| 136 | struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA; |
| 137 | |
| 138 | if (do_board_detect()) |
| 139 | /* EEPROM not populated */ |
| 140 | printf("Board: %s rev %s\n", "AM6-COMPROCEVM", "E3"); |
| 141 | else |
| 142 | printf("Board: %s rev %s\n", ep->name, ep->version); |
| 143 | |
| 144 | return 0; |
| 145 | } |
| 146 | |
Andreas Dannenberg | 63f5c85 | 2019-06-04 18:08:26 -0500 | [diff] [blame] | 147 | static void setup_board_eeprom_env(void) |
| 148 | { |
| 149 | char *name = "am65x"; |
| 150 | |
| 151 | if (do_board_detect()) |
| 152 | goto invalid_eeprom; |
| 153 | |
| 154 | if (board_is_am65x_base_board()) |
| 155 | name = "am65x"; |
| 156 | else |
| 157 | printf("Unidentified board claims %s in eeprom header\n", |
| 158 | board_ti_get_name()); |
| 159 | |
| 160 | invalid_eeprom: |
| 161 | set_board_info_env_am6(name); |
| 162 | } |
| 163 | |
| 164 | static int init_daughtercard_det_gpio(char *gpio_name, struct gpio_desc *desc) |
| 165 | { |
| 166 | int ret; |
| 167 | |
| 168 | memset(desc, 0, sizeof(*desc)); |
| 169 | |
| 170 | ret = dm_gpio_lookup_name(gpio_name, desc); |
| 171 | if (ret < 0) |
| 172 | return ret; |
| 173 | |
| 174 | /* Request GPIO, simply re-using the name as label */ |
| 175 | ret = dm_gpio_request(desc, gpio_name); |
| 176 | if (ret < 0) |
| 177 | return ret; |
| 178 | |
| 179 | return dm_gpio_set_dir_flags(desc, GPIOD_IS_IN); |
| 180 | } |
| 181 | |
| 182 | static int probe_daughtercards(void) |
| 183 | { |
| 184 | struct ti_am6_eeprom ep; |
| 185 | struct gpio_desc board_det_gpios[AM65X_EVM_BRD_DET_COUNT]; |
| 186 | char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN]; |
| 187 | u8 mac_addr_cnt; |
| 188 | char name_overlays[1024] = { 0 }; |
| 189 | int i, j; |
| 190 | int ret; |
| 191 | |
| 192 | /* |
| 193 | * Daughter card presence detection signal name to GPIO (via I2C I/O |
| 194 | * expander @ address 0x38) name and EEPROM I2C address mapping. |
| 195 | */ |
| 196 | const struct { |
| 197 | char *gpio_name; |
| 198 | u8 i2c_addr; |
| 199 | } slot_map[AM65X_EVM_BRD_DET_COUNT] = { |
| 200 | { "gpio@38_0", 0x52, }, /* AM65X_EVM_APP_BRD_DET */ |
| 201 | { "gpio@38_1", 0x55, }, /* AM65X_EVM_LCD_BRD_DET */ |
| 202 | { "gpio@38_2", 0x54, }, /* AM65X_EVM_SERDES_BRD_DET */ |
| 203 | { "gpio@38_3", 0x53, }, /* AM65X_EVM_HDMI_GPMC_BRD_DET */ |
| 204 | }; |
| 205 | |
| 206 | /* Declaration of daughtercards to probe */ |
| 207 | const struct { |
| 208 | u8 slot_index; /* Slot the card is installed */ |
| 209 | char *card_name; /* EEPROM-programmed card name */ |
| 210 | char *dtbo_name; /* Device tree overlay to apply */ |
| 211 | u8 eth_offset; /* ethXaddr MAC address index offset */ |
| 212 | } cards[] = { |
| 213 | { |
| 214 | AM65X_EVM_APP_BRD_DET, |
| 215 | "AM6-GPAPPEVM", |
| 216 | "k3-am654-gp.dtbo", |
| 217 | 0, |
| 218 | }, |
| 219 | { |
| 220 | AM65X_EVM_APP_BRD_DET, |
| 221 | "AM6-IDKAPPEVM", |
| 222 | "k3-am654-idk.dtbo", |
| 223 | 3, |
| 224 | }, |
| 225 | { |
| 226 | AM65X_EVM_SERDES_BRD_DET, |
| 227 | "SER-PCIE2LEVM", |
| 228 | "k3-am654-pcie-usb2.dtbo", |
| 229 | 0, |
| 230 | }, |
| 231 | { |
| 232 | AM65X_EVM_SERDES_BRD_DET, |
| 233 | "SER-PCIEUSBEVM", |
| 234 | "k3-am654-pcie-usb3.dtbo", |
| 235 | 0, |
| 236 | }, |
| 237 | { |
| 238 | AM65X_EVM_LCD_BRD_DET, |
| 239 | "OLDI-LCD1EVM", |
| 240 | "k3-am654-evm-oldi-lcd1evm.dtbo", |
| 241 | 0, |
| 242 | }, |
| 243 | }; |
| 244 | |
| 245 | /* |
| 246 | * Initialize GPIO used for daughtercard slot presence detection and |
| 247 | * keep the resulting handles in local array for easier access. |
| 248 | */ |
| 249 | for (i = 0; i < AM65X_EVM_BRD_DET_COUNT; i++) { |
| 250 | ret = init_daughtercard_det_gpio(slot_map[i].gpio_name, |
| 251 | &board_det_gpios[i]); |
| 252 | if (ret < 0) |
| 253 | return ret; |
| 254 | } |
| 255 | |
| 256 | for (i = 0; i < ARRAY_SIZE(cards); i++) { |
| 257 | /* Obtain card-specific slot index and associated I2C address */ |
| 258 | u8 slot_index = cards[i].slot_index; |
| 259 | u8 i2c_addr = slot_map[slot_index].i2c_addr; |
| 260 | |
| 261 | /* |
| 262 | * The presence detection signal is active-low, hence skip |
| 263 | * over this card slot if anything other than 0 is returned. |
| 264 | */ |
| 265 | ret = dm_gpio_get_value(&board_det_gpios[slot_index]); |
| 266 | if (ret < 0) |
| 267 | return ret; |
| 268 | else if (ret) |
| 269 | continue; |
| 270 | |
| 271 | /* Get and parse the daughter card EEPROM record */ |
| 272 | ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS, i2c_addr, |
| 273 | &ep, |
| 274 | (char **)mac_addr, |
| 275 | DAUGHTER_CARD_NO_OF_MAC_ADDR, |
| 276 | &mac_addr_cnt); |
| 277 | if (ret) { |
| 278 | pr_err("Reading daughtercard EEPROM at 0x%02x failed %d\n", |
| 279 | i2c_addr, ret); |
| 280 | /* |
| 281 | * Even this is pretty serious let's just skip over |
| 282 | * this particular daughtercard, rather than ending |
| 283 | * the probing process altogether. |
| 284 | */ |
| 285 | continue; |
| 286 | } |
| 287 | |
| 288 | /* Only process the parsed data if we found a match */ |
| 289 | if (strncmp(ep.name, cards[i].card_name, sizeof(ep.name))) |
| 290 | continue; |
| 291 | |
Lokesh Vutla | 1ffb8c1 | 2019-09-27 13:32:12 +0530 | [diff] [blame] | 292 | printf("Detected: %s rev %s\n", ep.name, ep.version); |
Andreas Dannenberg | 63f5c85 | 2019-06-04 18:08:26 -0500 | [diff] [blame] | 293 | |
| 294 | /* |
| 295 | * Populate any MAC addresses from daughtercard into the U-Boot |
| 296 | * environment, starting with a card-specific offset so we can |
| 297 | * have multiple cards contribute to the MAC pool in a well- |
| 298 | * defined manner. |
| 299 | */ |
| 300 | for (j = 0; j < mac_addr_cnt; j++) { |
| 301 | if (!is_valid_ethaddr((u8 *)mac_addr[j])) |
| 302 | continue; |
| 303 | |
| 304 | eth_env_set_enetaddr_by_index("eth", |
| 305 | cards[i].eth_offset + j, |
| 306 | (uchar *)mac_addr[j]); |
| 307 | } |
| 308 | |
| 309 | /* Skip if no overlays are to be added */ |
| 310 | if (!strlen(cards[i].dtbo_name)) |
| 311 | continue; |
| 312 | |
| 313 | /* |
| 314 | * Make sure we are not running out of buffer space by checking |
| 315 | * if we can fit the new overlay, a trailing space to be used |
| 316 | * as a separator, plus the terminating zero. |
| 317 | */ |
| 318 | if (strlen(name_overlays) + strlen(cards[i].dtbo_name) + 2 > |
| 319 | sizeof(name_overlays)) |
| 320 | return -ENOMEM; |
| 321 | |
| 322 | /* Append to our list of overlays */ |
| 323 | strcat(name_overlays, cards[i].dtbo_name); |
| 324 | strcat(name_overlays, " "); |
| 325 | } |
| 326 | |
| 327 | /* Apply device tree overlay(s) to the U-Boot environment, if any */ |
| 328 | if (strlen(name_overlays)) |
| 329 | return env_set("name_overlays", name_overlays); |
| 330 | |
| 331 | return 0; |
| 332 | } |
| 333 | |
| 334 | int board_late_init(void) |
| 335 | { |
| 336 | struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA; |
| 337 | |
| 338 | setup_board_eeprom_env(); |
| 339 | |
| 340 | /* |
| 341 | * The first MAC address for ethernet a.k.a. ethernet0 comes from |
| 342 | * efuse populated via the am654 gigabit eth switch subsystem driver. |
| 343 | * All the other ones are populated via EEPROM, hence continue with |
| 344 | * an index of 1. |
| 345 | */ |
| 346 | board_ti_am6_set_ethaddr(1, ep->mac_addr_cnt); |
| 347 | |
| 348 | /* Check for and probe any plugged-in daughtercards */ |
| 349 | probe_daughtercards(); |
| 350 | |
| 351 | return 0; |
| 352 | } |