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>
13 #include <asm/arch/sys_proto.h>
14 #include <asm/arch/hardware.h>
17 #include <asm/omap_common.h>
20 #include <asm/arch/sys_proto.h>
22 #include "../common/board_detect.h"
24 #define board_is_am65x_base_board() board_ti_is("AM6-COMPROCEVM")
26 /* Daughter card presence detection signals */
28 AM65X_EVM_APP_BRD_DET,
29 AM65X_EVM_LCD_BRD_DET,
30 AM65X_EVM_SERDES_BRD_DET,
31 AM65X_EVM_HDMI_GPMC_BRD_DET,
32 AM65X_EVM_BRD_DET_COUNT,
35 /* Max number of MAC addresses that are parsed/processed per daughter card */
36 #define DAUGHTER_CARD_NO_OF_MAC_ADDR 8
38 DECLARE_GLOBAL_DATA_PTR;
47 #ifdef CONFIG_PHYS_64BIT
48 gd->ram_size = 0x100000000;
50 gd->ram_size = 0x80000000;
56 ulong board_get_usable_ram_top(ulong total_size)
58 #ifdef CONFIG_PHYS_64BIT
59 /* Limit RAM used by U-Boot to the DDR low region */
60 if (gd->ram_top > 0x100000000)
67 int dram_init_banksize(void)
69 /* Bank 0 declares the memory available in the DDR low region */
70 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
71 gd->bd->bi_dram[0].size = 0x80000000;
72 gd->ram_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;
78 gd->ram_size = 0x100000000;
84 #ifdef CONFIG_SPL_LOAD_FIT
85 int board_fit_config_name_match(const char *name)
87 #ifdef CONFIG_TARGET_AM654_A53_EVM
88 if (!strcmp(name, "k3-am654-base-board"))
96 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
97 int ft_board_setup(void *blob, bd_t *bd)
101 ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", "sram@70000000");
103 printf("%s: fixing up msmc ram failed %d\n", __func__, ret);
107 #if defined(CONFIG_TI_SECURE_DEVICE)
108 /* Make HW RNG reserved for secure world use */
109 ret = fdt_disable_node(blob, "/interconnect@100000/trng@4e10000");
111 printf("%s: disabling TRGN failed %d\n", __func__, ret);
118 int do_board_detect(void)
122 ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
123 CONFIG_EEPROM_CHIP_ADDRESS);
125 pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
126 CONFIG_EEPROM_CHIP_ADDRESS, ret);
133 struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
135 if (do_board_detect())
136 /* EEPROM not populated */
137 printf("Board: %s rev %s\n", "AM6-COMPROCEVM", "E3");
139 printf("Board: %s rev %s\n", ep->name, ep->version);
144 static void setup_board_eeprom_env(void)
146 char *name = "am65x";
148 if (do_board_detect())
151 if (board_is_am65x_base_board())
154 printf("Unidentified board claims %s in eeprom header\n",
155 board_ti_get_name());
158 set_board_info_env_am6(name);
161 static int init_daughtercard_det_gpio(char *gpio_name, struct gpio_desc *desc)
165 memset(desc, 0, sizeof(*desc));
167 ret = dm_gpio_lookup_name(gpio_name, desc);
171 /* Request GPIO, simply re-using the name as label */
172 ret = dm_gpio_request(desc, gpio_name);
176 return dm_gpio_set_dir_flags(desc, GPIOD_IS_IN);
179 static int probe_daughtercards(void)
181 struct ti_am6_eeprom ep;
182 struct gpio_desc board_det_gpios[AM65X_EVM_BRD_DET_COUNT];
183 char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
185 char name_overlays[1024] = { 0 };
190 * Daughter card presence detection signal name to GPIO (via I2C I/O
191 * expander @ address 0x38) name and EEPROM I2C address mapping.
196 } slot_map[AM65X_EVM_BRD_DET_COUNT] = {
197 { "gpio@38_0", 0x52, }, /* AM65X_EVM_APP_BRD_DET */
198 { "gpio@38_1", 0x55, }, /* AM65X_EVM_LCD_BRD_DET */
199 { "gpio@38_2", 0x54, }, /* AM65X_EVM_SERDES_BRD_DET */
200 { "gpio@38_3", 0x53, }, /* AM65X_EVM_HDMI_GPMC_BRD_DET */
203 /* Declaration of daughtercards to probe */
205 u8 slot_index; /* Slot the card is installed */
206 char *card_name; /* EEPROM-programmed card name */
207 char *dtbo_name; /* Device tree overlay to apply */
208 u8 eth_offset; /* ethXaddr MAC address index offset */
211 AM65X_EVM_APP_BRD_DET,
217 AM65X_EVM_APP_BRD_DET,
223 AM65X_EVM_SERDES_BRD_DET,
225 "k3-am654-pcie-usb2.dtbo",
229 AM65X_EVM_SERDES_BRD_DET,
231 "k3-am654-pcie-usb3.dtbo",
235 AM65X_EVM_LCD_BRD_DET,
237 "k3-am654-evm-oldi-lcd1evm.dtbo",
243 * Initialize GPIO used for daughtercard slot presence detection and
244 * keep the resulting handles in local array for easier access.
246 for (i = 0; i < AM65X_EVM_BRD_DET_COUNT; i++) {
247 ret = init_daughtercard_det_gpio(slot_map[i].gpio_name,
248 &board_det_gpios[i]);
253 for (i = 0; i < ARRAY_SIZE(cards); i++) {
254 /* Obtain card-specific slot index and associated I2C address */
255 u8 slot_index = cards[i].slot_index;
256 u8 i2c_addr = slot_map[slot_index].i2c_addr;
259 * The presence detection signal is active-low, hence skip
260 * over this card slot if anything other than 0 is returned.
262 ret = dm_gpio_get_value(&board_det_gpios[slot_index]);
268 /* Get and parse the daughter card EEPROM record */
269 ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS, i2c_addr,
272 DAUGHTER_CARD_NO_OF_MAC_ADDR,
275 pr_err("Reading daughtercard EEPROM at 0x%02x failed %d\n",
278 * Even this is pretty serious let's just skip over
279 * this particular daughtercard, rather than ending
280 * the probing process altogether.
285 /* Only process the parsed data if we found a match */
286 if (strncmp(ep.name, cards[i].card_name, sizeof(ep.name)))
289 printf("Detected: %s rev %s\n", ep.name, ep.version);
292 * Populate any MAC addresses from daughtercard into the U-Boot
293 * environment, starting with a card-specific offset so we can
294 * have multiple cards contribute to the MAC pool in a well-
297 for (j = 0; j < mac_addr_cnt; j++) {
298 if (!is_valid_ethaddr((u8 *)mac_addr[j]))
301 eth_env_set_enetaddr_by_index("eth",
302 cards[i].eth_offset + j,
303 (uchar *)mac_addr[j]);
306 /* Skip if no overlays are to be added */
307 if (!strlen(cards[i].dtbo_name))
311 * Make sure we are not running out of buffer space by checking
312 * if we can fit the new overlay, a trailing space to be used
313 * as a separator, plus the terminating zero.
315 if (strlen(name_overlays) + strlen(cards[i].dtbo_name) + 2 >
316 sizeof(name_overlays))
319 /* Append to our list of overlays */
320 strcat(name_overlays, cards[i].dtbo_name);
321 strcat(name_overlays, " ");
324 /* Apply device tree overlay(s) to the U-Boot environment, if any */
325 if (strlen(name_overlays))
326 return env_set("name_overlays", name_overlays);
331 int board_late_init(void)
333 struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
335 setup_board_eeprom_env();
338 * The first MAC address for ethernet a.k.a. ethernet0 comes from
339 * efuse populated via the am654 gigabit eth switch subsystem driver.
340 * All the other ones are populated via EEPROM, hence continue with
343 board_ti_am6_set_ethaddr(1, ep->mac_addr_cnt);
345 /* Check for and probe any plugged-in daughtercards */
346 probe_daughtercards();