1 // SPDX-License-Identifier: GPL-2.0+
3 * Board specific initialization for AM654 EVM
5 * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
6 * Lokesh Vutla <lokeshvutla@ti.com>
14 #include <asm/arch/sys_proto.h>
15 #include <asm/arch/hardware.h>
18 #include <asm/omap_common.h>
21 #include <asm/arch/sys_proto.h>
23 #include "../common/board_detect.h"
25 #define board_is_am65x_base_board() board_ti_is("AM6-COMPROCEVM")
27 /* Daughter card presence detection signals */
29 AM65X_EVM_APP_BRD_DET,
30 AM65X_EVM_LCD_BRD_DET,
31 AM65X_EVM_SERDES_BRD_DET,
32 AM65X_EVM_HDMI_GPMC_BRD_DET,
33 AM65X_EVM_BRD_DET_COUNT,
36 /* Max number of MAC addresses that are parsed/processed per daughter card */
37 #define DAUGHTER_CARD_NO_OF_MAC_ADDR 8
39 DECLARE_GLOBAL_DATA_PTR;
48 #ifdef CONFIG_PHYS_64BIT
49 gd->ram_size = 0x100000000;
51 gd->ram_size = 0x80000000;
57 ulong board_get_usable_ram_top(ulong total_size)
59 #ifdef CONFIG_PHYS_64BIT
60 /* Limit RAM used by U-Boot to the DDR low region */
61 if (gd->ram_top > 0x100000000)
68 int dram_init_banksize(void)
70 /* Bank 0 declares the memory available in the DDR low region */
71 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
72 gd->bd->bi_dram[0].size = 0x80000000;
74 #ifdef CONFIG_PHYS_64BIT
75 /* Bank 1 declares the memory available in the DDR high region */
76 gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1;
77 gd->bd->bi_dram[1].size = 0x80000000;
83 #ifdef CONFIG_SPL_LOAD_FIT
84 int board_fit_config_name_match(const char *name)
86 #ifdef CONFIG_TARGET_AM654_A53_EVM
87 if (!strcmp(name, "k3-am654-base-board"))
95 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
96 int ft_board_setup(void *blob, bd_t *bd)
100 ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", "sram@70000000");
102 printf("%s: fixing up msmc ram failed %d\n", __func__, ret);
106 #if defined(CONFIG_TI_SECURE_DEVICE)
107 /* Make HW RNG reserved for secure world use */
108 ret = fdt_disable_node(blob, "/interconnect@100000/trng@4e10000");
110 printf("%s: disabling TRGN failed %d\n", __func__, ret);
117 int do_board_detect(void)
121 ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
122 CONFIG_EEPROM_CHIP_ADDRESS);
124 pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
125 CONFIG_EEPROM_CHIP_ADDRESS, ret);
132 struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
134 if (do_board_detect())
135 /* EEPROM not populated */
136 printf("Board: %s rev %s\n", "AM6-COMPROCEVM", "E3");
138 printf("Board: %s rev %s\n", ep->name, ep->version);
143 static void setup_board_eeprom_env(void)
145 char *name = "am65x";
147 if (do_board_detect())
150 if (board_is_am65x_base_board())
153 printf("Unidentified board claims %s in eeprom header\n",
154 board_ti_get_name());
157 set_board_info_env_am6(name);
160 static int init_daughtercard_det_gpio(char *gpio_name, struct gpio_desc *desc)
164 memset(desc, 0, sizeof(*desc));
166 ret = dm_gpio_lookup_name(gpio_name, desc);
170 /* Request GPIO, simply re-using the name as label */
171 ret = dm_gpio_request(desc, gpio_name);
175 return dm_gpio_set_dir_flags(desc, GPIOD_IS_IN);
178 static int probe_daughtercards(void)
180 struct ti_am6_eeprom ep;
181 struct gpio_desc board_det_gpios[AM65X_EVM_BRD_DET_COUNT];
182 char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
184 char name_overlays[1024] = { 0 };
189 * Daughter card presence detection signal name to GPIO (via I2C I/O
190 * expander @ address 0x38) name and EEPROM I2C address mapping.
195 } slot_map[AM65X_EVM_BRD_DET_COUNT] = {
196 { "gpio@38_0", 0x52, }, /* AM65X_EVM_APP_BRD_DET */
197 { "gpio@38_1", 0x55, }, /* AM65X_EVM_LCD_BRD_DET */
198 { "gpio@38_2", 0x54, }, /* AM65X_EVM_SERDES_BRD_DET */
199 { "gpio@38_3", 0x53, }, /* AM65X_EVM_HDMI_GPMC_BRD_DET */
202 /* Declaration of daughtercards to probe */
204 u8 slot_index; /* Slot the card is installed */
205 char *card_name; /* EEPROM-programmed card name */
206 char *dtbo_name; /* Device tree overlay to apply */
207 u8 eth_offset; /* ethXaddr MAC address index offset */
210 AM65X_EVM_APP_BRD_DET,
216 AM65X_EVM_APP_BRD_DET,
222 AM65X_EVM_SERDES_BRD_DET,
224 "k3-am654-pcie-usb2.dtbo",
228 AM65X_EVM_SERDES_BRD_DET,
230 "k3-am654-pcie-usb3.dtbo",
234 AM65X_EVM_LCD_BRD_DET,
236 "k3-am654-evm-oldi-lcd1evm.dtbo",
242 * Initialize GPIO used for daughtercard slot presence detection and
243 * keep the resulting handles in local array for easier access.
245 for (i = 0; i < AM65X_EVM_BRD_DET_COUNT; i++) {
246 ret = init_daughtercard_det_gpio(slot_map[i].gpio_name,
247 &board_det_gpios[i]);
252 for (i = 0; i < ARRAY_SIZE(cards); i++) {
253 /* Obtain card-specific slot index and associated I2C address */
254 u8 slot_index = cards[i].slot_index;
255 u8 i2c_addr = slot_map[slot_index].i2c_addr;
258 * The presence detection signal is active-low, hence skip
259 * over this card slot if anything other than 0 is returned.
261 ret = dm_gpio_get_value(&board_det_gpios[slot_index]);
267 /* Get and parse the daughter card EEPROM record */
268 ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS, i2c_addr,
271 DAUGHTER_CARD_NO_OF_MAC_ADDR,
274 pr_err("Reading daughtercard EEPROM at 0x%02x failed %d\n",
277 * Even this is pretty serious let's just skip over
278 * this particular daughtercard, rather than ending
279 * the probing process altogether.
284 /* Only process the parsed data if we found a match */
285 if (strncmp(ep.name, cards[i].card_name, sizeof(ep.name)))
288 printf("Detected: %s rev %s\n", ep.name, ep.version);
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 cards contribute to the MAC pool in a well-
296 for (j = 0; j < mac_addr_cnt; j++) {
297 if (!is_valid_ethaddr((u8 *)mac_addr[j]))
300 eth_env_set_enetaddr_by_index("eth",
301 cards[i].eth_offset + j,
302 (uchar *)mac_addr[j]);
305 /* Skip if no overlays are to be added */
306 if (!strlen(cards[i].dtbo_name))
310 * Make sure we are not running out of buffer space by checking
311 * if we can fit the new overlay, a trailing space to be used
312 * as a separator, plus the terminating zero.
314 if (strlen(name_overlays) + strlen(cards[i].dtbo_name) + 2 >
315 sizeof(name_overlays))
318 /* Append to our list of overlays */
319 strcat(name_overlays, cards[i].dtbo_name);
320 strcat(name_overlays, " ");
323 /* Apply device tree overlay(s) to the U-Boot environment, if any */
324 if (strlen(name_overlays))
325 return env_set("name_overlays", name_overlays);
330 int board_late_init(void)
332 struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
334 setup_board_eeprom_env();
337 * The first MAC address for ethernet a.k.a. ethernet0 comes from
338 * efuse populated via the am654 gigabit eth switch subsystem driver.
339 * All the other ones are populated via EEPROM, hence continue with
342 board_ti_am6_set_ethaddr(1, ep->mac_addr_cnt);
344 /* Check for and probe any plugged-in daughtercards */
345 probe_daughtercards();