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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Board specific initialization for AM654 EVM
- *
- * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
- * Lokesh Vutla <lokeshvutla@ti.com>
- *
- */
- #include <common.h>
- #include <dm.h>
- #include <fdt_support.h>
- #include <image.h>
- #include <init.h>
- #include <net.h>
- #include <asm/arch/sys_proto.h>
- #include <asm/arch/hardware.h>
- #include <asm/gpio.h>
- #include <asm/io.h>
- #include <asm/omap_common.h>
- #include <env.h>
- #include <spl.h>
- #include <asm/arch/sys_proto.h>
- #include "../common/board_detect.h"
- #define board_is_am65x_base_board() board_ti_is("AM6-COMPROCEVM")
- /* Daughter card presence detection signals */
- enum {
- AM65X_EVM_APP_BRD_DET,
- AM65X_EVM_LCD_BRD_DET,
- AM65X_EVM_SERDES_BRD_DET,
- AM65X_EVM_HDMI_GPMC_BRD_DET,
- AM65X_EVM_BRD_DET_COUNT,
- };
- /* Max number of MAC addresses that are parsed/processed per daughter card */
- #define DAUGHTER_CARD_NO_OF_MAC_ADDR 8
- DECLARE_GLOBAL_DATA_PTR;
- int board_init(void)
- {
- return 0;
- }
- int dram_init(void)
- {
- #ifdef CONFIG_PHYS_64BIT
- gd->ram_size = 0x100000000;
- #else
- gd->ram_size = 0x80000000;
- #endif
- return 0;
- }
- ulong board_get_usable_ram_top(ulong total_size)
- {
- #ifdef CONFIG_PHYS_64BIT
- /* Limit RAM used by U-Boot to the DDR low region */
- if (gd->ram_top > 0x100000000)
- return 0x100000000;
- #endif
- return gd->ram_top;
- }
- int dram_init_banksize(void)
- {
- /* Bank 0 declares the memory available in the DDR low region */
- gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
- gd->bd->bi_dram[0].size = 0x80000000;
- gd->ram_size = 0x80000000;
- #ifdef CONFIG_PHYS_64BIT
- /* Bank 1 declares the memory available in the DDR high region */
- gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE1;
- gd->bd->bi_dram[1].size = 0x80000000;
- gd->ram_size = 0x100000000;
- #endif
- return 0;
- }
- #ifdef CONFIG_SPL_LOAD_FIT
- int board_fit_config_name_match(const char *name)
- {
- #ifdef CONFIG_TARGET_AM654_A53_EVM
- if (!strcmp(name, "k3-am654-base-board"))
- return 0;
- #endif
- return -1;
- }
- #endif
- #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
- int ft_board_setup(void *blob, struct bd_info *bd)
- {
- int ret;
- ret = fdt_fixup_msmc_ram(blob, "/bus@100000", "sram@70000000");
- if (ret < 0)
- ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000",
- "sram@70000000");
- if (ret) {
- printf("%s: fixing up msmc ram failed %d\n", __func__, ret);
- return ret;
- }
- #if defined(CONFIG_TI_SECURE_DEVICE)
- /* Make Crypto HW reserved for secure world use */
- ret = fdt_disable_node(blob, "/bus@100000/crypto@4e00000");
- if (ret < 0)
- ret = fdt_disable_node(blob,
- "/interconnect@100000/crypto@4E00000");
- if (ret)
- printf("%s: disabling SA2UL failed %d\n", __func__, ret);
- #endif
- return 0;
- }
- #endif
- int do_board_detect(void)
- {
- int ret;
- ret = ti_i2c_eeprom_am6_get_base(CONFIG_EEPROM_BUS_ADDRESS,
- CONFIG_EEPROM_CHIP_ADDRESS);
- if (ret)
- pr_err("Reading on-board EEPROM at 0x%02x failed %d\n",
- CONFIG_EEPROM_CHIP_ADDRESS, ret);
- return ret;
- }
- int checkboard(void)
- {
- struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
- if (do_board_detect())
- /* EEPROM not populated */
- printf("Board: %s rev %s\n", "AM6-COMPROCEVM", "E3");
- else
- printf("Board: %s rev %s\n", ep->name, ep->version);
- return 0;
- }
- static void setup_board_eeprom_env(void)
- {
- char *name = "am65x";
- if (do_board_detect())
- goto invalid_eeprom;
- if (board_is_am65x_base_board())
- name = "am65x";
- else
- printf("Unidentified board claims %s in eeprom header\n",
- board_ti_get_name());
- invalid_eeprom:
- set_board_info_env_am6(name);
- }
- static int init_daughtercard_det_gpio(char *gpio_name, struct gpio_desc *desc)
- {
- int ret;
- memset(desc, 0, sizeof(*desc));
- ret = dm_gpio_lookup_name(gpio_name, desc);
- if (ret < 0)
- return ret;
- /* Request GPIO, simply re-using the name as label */
- ret = dm_gpio_request(desc, gpio_name);
- if (ret < 0)
- return ret;
- return dm_gpio_set_dir_flags(desc, GPIOD_IS_IN);
- }
- static int probe_daughtercards(void)
- {
- struct ti_am6_eeprom ep;
- struct gpio_desc board_det_gpios[AM65X_EVM_BRD_DET_COUNT];
- char mac_addr[DAUGHTER_CARD_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
- u8 mac_addr_cnt;
- char name_overlays[1024] = { 0 };
- int i, j;
- int ret;
- /*
- * Daughter card presence detection signal name to GPIO (via I2C I/O
- * expander @ address 0x38) name and EEPROM I2C address mapping.
- */
- const struct {
- char *gpio_name;
- u8 i2c_addr;
- } slot_map[AM65X_EVM_BRD_DET_COUNT] = {
- { "gpio@38_0", 0x52, }, /* AM65X_EVM_APP_BRD_DET */
- { "gpio@38_1", 0x55, }, /* AM65X_EVM_LCD_BRD_DET */
- { "gpio@38_2", 0x54, }, /* AM65X_EVM_SERDES_BRD_DET */
- { "gpio@38_3", 0x53, }, /* AM65X_EVM_HDMI_GPMC_BRD_DET */
- };
- /* Declaration of daughtercards to probe */
- const struct {
- u8 slot_index; /* Slot the card is installed */
- char *card_name; /* EEPROM-programmed card name */
- char *dtbo_name; /* Device tree overlay to apply */
- u8 eth_offset; /* ethXaddr MAC address index offset */
- } cards[] = {
- {
- AM65X_EVM_APP_BRD_DET,
- "AM6-GPAPPEVM",
- "k3-am654-gp.dtbo",
- 0,
- },
- {
- AM65X_EVM_APP_BRD_DET,
- "AM6-IDKAPPEVM",
- "k3-am654-idk.dtbo",
- 3,
- },
- {
- AM65X_EVM_SERDES_BRD_DET,
- "SER-PCIE2LEVM",
- "k3-am654-pcie-usb2.dtbo",
- 0,
- },
- {
- AM65X_EVM_SERDES_BRD_DET,
- "SER-PCIEUSBEVM",
- "k3-am654-pcie-usb3.dtbo",
- 0,
- },
- {
- AM65X_EVM_LCD_BRD_DET,
- "OLDI-LCD1EVM",
- "k3-am654-evm-oldi-lcd1evm.dtbo",
- 0,
- },
- };
- /*
- * Initialize GPIO used for daughtercard slot presence detection and
- * keep the resulting handles in local array for easier access.
- */
- for (i = 0; i < AM65X_EVM_BRD_DET_COUNT; i++) {
- ret = init_daughtercard_det_gpio(slot_map[i].gpio_name,
- &board_det_gpios[i]);
- if (ret < 0)
- return ret;
- }
- for (i = 0; i < ARRAY_SIZE(cards); i++) {
- /* Obtain card-specific slot index and associated I2C address */
- u8 slot_index = cards[i].slot_index;
- u8 i2c_addr = slot_map[slot_index].i2c_addr;
- /*
- * The presence detection signal is active-low, hence skip
- * over this card slot if anything other than 0 is returned.
- */
- ret = dm_gpio_get_value(&board_det_gpios[slot_index]);
- if (ret < 0)
- return ret;
- else if (ret)
- continue;
- /* Get and parse the daughter card EEPROM record */
- ret = ti_i2c_eeprom_am6_get(CONFIG_EEPROM_BUS_ADDRESS, i2c_addr,
- &ep,
- (char **)mac_addr,
- DAUGHTER_CARD_NO_OF_MAC_ADDR,
- &mac_addr_cnt);
- if (ret) {
- pr_err("Reading daughtercard EEPROM at 0x%02x failed %d\n",
- i2c_addr, ret);
- /*
- * Even this is pretty serious let's just skip over
- * this particular daughtercard, rather than ending
- * the probing process altogether.
- */
- continue;
- }
- /* Only process the parsed data if we found a match */
- if (strncmp(ep.name, cards[i].card_name, sizeof(ep.name)))
- continue;
- printf("Detected: %s rev %s\n", ep.name, ep.version);
- /*
- * Populate any MAC addresses from daughtercard into the U-Boot
- * environment, starting with a card-specific offset so we can
- * have multiple cards contribute to the MAC pool in a well-
- * defined manner.
- */
- for (j = 0; j < mac_addr_cnt; j++) {
- if (!is_valid_ethaddr((u8 *)mac_addr[j]))
- continue;
- eth_env_set_enetaddr_by_index("eth",
- cards[i].eth_offset + j,
- (uchar *)mac_addr[j]);
- }
- /* Skip if no overlays are to be added */
- if (!strlen(cards[i].dtbo_name))
- continue;
- /*
- * Make sure we are not running out of buffer space by checking
- * if we can fit the new overlay, a trailing space to be used
- * as a separator, plus the terminating zero.
- */
- if (strlen(name_overlays) + strlen(cards[i].dtbo_name) + 2 >
- sizeof(name_overlays))
- return -ENOMEM;
- /* Append to our list of overlays */
- strcat(name_overlays, cards[i].dtbo_name);
- strcat(name_overlays, " ");
- }
- /* Apply device tree overlay(s) to the U-Boot environment, if any */
- if (strlen(name_overlays))
- return env_set("name_overlays", name_overlays);
- return 0;
- }
- int board_late_init(void)
- {
- struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA;
- setup_board_eeprom_env();
- /*
- * The first MAC address for ethernet a.k.a. ethernet0 comes from
- * efuse populated via the am654 gigabit eth switch subsystem driver.
- * All the other ones are populated via EEPROM, hence continue with
- * an index of 1.
- */
- board_ti_am6_set_ethaddr(1, ep->mac_addr_cnt);
- /* Check for and probe any plugged-in daughtercards */
- probe_daughtercards();
- return 0;
- }
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