| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright 2018 NXP |
| * Copyright 2020 Linaro |
| */ |
| |
| #include <common.h> |
| #include <env.h> |
| #include <extension_board.h> |
| #include <hang.h> |
| #include <i2c.h> |
| #include <init.h> |
| #include <miiphy.h> |
| #include <netdev.h> |
| #include <i2c_eeprom.h> |
| #include <i2c.h> |
| |
| #include <asm/arch/clock.h> |
| #include <asm/arch/imx8mm_pins.h> |
| #include <asm/arch/sys_proto.h> |
| #include <asm/global_data.h> |
| #include <asm/io.h> |
| #include <asm/mach-imx/gpio.h> |
| #include <asm/mach-imx/mxc_i2c.h> |
| #include <asm/sections.h> |
| |
| #include "ddr/ddr.h" |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| int board_phys_sdram_size(phys_size_t *size) |
| { |
| struct lpddr4_tcm_desc *lpddr4_tcm_desc = |
| (struct lpddr4_tcm_desc *)TCM_DATA_CFG; |
| |
| switch (lpddr4_tcm_desc->size) { |
| case 4096: |
| case 2048: |
| case 1024: |
| *size = (1L << 20) * lpddr4_tcm_desc->size; |
| break; |
| default: |
| printf("%s: DRAM size %uM is not supported\n", |
| __func__, |
| lpddr4_tcm_desc->size); |
| hang(); |
| break; |
| }; |
| |
| return 0; |
| } |
| |
| /* IOT_GATE-iMX8 extension boards ID */ |
| typedef enum { |
| IOT_GATE_EXT_EMPTY, /* No extension */ |
| IOT_GATE_EXT_CAN, /* CAN bus */ |
| IOT_GATE_EXT_IED, /* Bridge */ |
| IOT_GATE_EXT_POE, /* POE */ |
| IOT_GATE_EXT_POEV2, /* POEv2 */ |
| } iot_gate_imx8_ext; |
| |
| typedef enum { |
| IOT_GATE_IMX8_CARD_ID_EMPTY = 0, /* card id - uninhabited */ |
| IOT_GATE_IMX8_CARD_ID_DI4O4 = 1, /* Card ID - IED-DI4O4 */ |
| IOT_GATE_IMX8_CARD_ID_RS_485 = 2, /* Card ID - IED-RS485 */ |
| IOT_GATE_IMX8_CARD_ID_TPM = 3, /* Card ID - IED-TPM */ |
| IOT_GATE_IMX8_CARD_ID_CAN = 4, /* Card ID - IED-CAN */ |
| IOT_GATE_IMX8_CARD_ID_CL420 = 5, /* Card ID - IED-CL420 */ |
| IOT_GATE_IMX8_CARD_ID_RS_232 = 6, /* Card ID - IED-RS232 */ |
| } iot_gate_imx8_ied_ext; |
| |
| static int setup_fec(void) |
| { |
| if (IS_ENABLED(CONFIG_FEC_MXC)) { |
| struct iomuxc_gpr_base_regs *gpr = |
| (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR; |
| |
| /* Use 125M anatop REF_CLK1 for ENET1, not from external */ |
| clrsetbits_le32(&gpr->gpr[1], 0x2000, 0); |
| } |
| |
| return 0; |
| } |
| |
| int board_phy_config(struct phy_device *phydev) |
| { |
| if (IS_ENABLED(CONFIG_FEC_MXC)) { |
| /* enable rgmii rxc skew and phy mode select to RGMII copper */ |
| phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f); |
| phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8); |
| |
| phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00); |
| phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee); |
| phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05); |
| phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100); |
| |
| if (phydev->drv->config) |
| phydev->drv->config(phydev); |
| } |
| return 0; |
| } |
| |
| int board_init(void) |
| { |
| if (IS_ENABLED(CONFIG_FEC_MXC)) |
| setup_fec(); |
| |
| return 0; |
| } |
| |
| int board_mmc_get_env_dev(int devno) |
| { |
| return devno; |
| } |
| |
| #define IOT_GATE_IMX8_EXT_I2C 3 /* I2C ID of the extension board */ |
| #define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM 0x54 /* I2C address of the EEPROM */ |
| |
| /* I2C address of the EEPROM in the POE extension */ |
| #define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POE 0x50 |
| #define IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POEV2 0x51 |
| #define IOT_GATE_IMX8_EXT_I2C_ADDR_GPIO 0x22 /* I2C address of the GPIO |
| extender */ |
| |
| static int iot_gate_imx8_ext_id = IOT_GATE_EXT_EMPTY; /* Extension board ID */ |
| static int iot_gate_imx8_ext_ied_id [3] = { |
| IOT_GATE_IMX8_CARD_ID_EMPTY, |
| IOT_GATE_IMX8_CARD_ID_EMPTY, |
| IOT_GATE_IMX8_CARD_ID_EMPTY }; |
| |
| /* |
| * iot_gate_imx8_detect_ext() - extended board detection |
| * The detection is done according to the detected I2C devices. |
| */ |
| static void iot_gate_imx8_detect_ext(void) |
| { |
| int ret; |
| struct udevice *i2c_bus, *i2c_dev; |
| |
| ret = uclass_get_device_by_seq(UCLASS_I2C, IOT_GATE_IMX8_EXT_I2C, |
| &i2c_bus); |
| if (ret) { |
| printf("%s: Failed getting i2c device\n", __func__); |
| return; |
| } |
| |
| ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POE, 0, |
| &i2c_dev); |
| if (!ret) { |
| iot_gate_imx8_ext_id = IOT_GATE_EXT_POE; |
| return; |
| } |
| |
| ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM_POEV2, 0, |
| &i2c_dev); |
| if (!ret) { |
| iot_gate_imx8_ext_id = IOT_GATE_EXT_POEV2; |
| return; |
| } |
| |
| ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_EEPROM, 0, |
| &i2c_dev); |
| if (ret){ |
| iot_gate_imx8_ext_id = IOT_GATE_EXT_EMPTY; |
| return; |
| } |
| /* Only the bridge extension includes the GPIO extender */ |
| ret = dm_i2c_probe(i2c_bus, IOT_GATE_IMX8_EXT_I2C_ADDR_GPIO, 0, |
| &i2c_dev); |
| if (ret) /* GPIO extender not detected */ |
| iot_gate_imx8_ext_id = IOT_GATE_EXT_CAN; |
| else /* GPIO extender detected */ |
| iot_gate_imx8_ext_id = IOT_GATE_EXT_IED; |
| } |
| |
| static iomux_v3_cfg_t const iot_gate_imx8_ext_ied_pads[] = { |
| IMX8MM_PAD_NAND_ALE_GPIO3_IO0 | MUX_PAD_CTRL(PAD_CTL_PE), |
| IMX8MM_PAD_NAND_CE0_B_GPIO3_IO1 | MUX_PAD_CTRL(PAD_CTL_PE), |
| IMX8MM_PAD_NAND_DATA00_GPIO3_IO6 | MUX_PAD_CTRL(PAD_CTL_PE), |
| IMX8MM_PAD_NAND_DATA01_GPIO3_IO7 | MUX_PAD_CTRL(PAD_CTL_PE), |
| IMX8MM_PAD_NAND_DATA02_GPIO3_IO8 | MUX_PAD_CTRL(PAD_CTL_PE), |
| IMX8MM_PAD_NAND_DATA03_GPIO3_IO9 | MUX_PAD_CTRL(PAD_CTL_PE), |
| }; |
| |
| static iomux_v3_cfg_t const iot_gate_imx8_ext_poev2_pads[] = { |
| IMX8MM_PAD_SAI3_TXD_GPIO5_IO1 | MUX_PAD_CTRL(PAD_CTL_PE | |
| PAD_CTL_PUE), |
| }; |
| |
| /* Extension board bridge GPIOs */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_I0 IMX_GPIO_NR(3, 0) /* IN 0 */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_I1 IMX_GPIO_NR(3, 1) /* IN 1 */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_I2 IMX_GPIO_NR(3, 6) /* IN 2 */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_I3 IMX_GPIO_NR(3, 7) /* IN 3 */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_O0 IMX_GPIO_NR(3, 8) /* OUT 0 */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_O1 IMX_GPIO_NR(3, 9) /* OUT 1 */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_O2 IMX_GPIO_NR(6, 9) /* OUT 2 */ |
| #define IOT_GATE_IMX8_GPIO_EXT_IED_O3 IMX_GPIO_NR(6, 10)/* OUT 3 */ |
| |
| /* Extension board POE GPIOs */ |
| #define IOT_GATE_IMX8_GPIO_EXT_POE_MUX IMX_GPIO_NR(5, 1)/* USB_MUX */ |
| |
| /* |
| * iot_gate_imx8_update_pinmux() - update the pinmux |
| * Update the pinmux according to the detected extended board. |
| */ |
| static void iot_gate_imx8_update_pinmux(void) |
| { |
| if (iot_gate_imx8_ext_id == IOT_GATE_EXT_POEV2) { |
| imx_iomux_v3_setup_multiple_pads(iot_gate_imx8_ext_poev2_pads, |
| ARRAY_SIZE(iot_gate_imx8_ext_poev2_pads)); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_POE_MUX, "poev2_usb-mux"); |
| /* Update USB MUX state */ |
| gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_POE_MUX, 1); |
| |
| return; |
| } |
| if (iot_gate_imx8_ext_id != IOT_GATE_EXT_IED) |
| return; |
| |
| imx_iomux_v3_setup_multiple_pads(iot_gate_imx8_ext_ied_pads, |
| ARRAY_SIZE(iot_gate_imx8_ext_ied_pads)); |
| |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I0, "ied-di4o4_i0"); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I0); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I1, "ied-di4o4_i1"); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I1); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I2, "ied-di4o4_i2"); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I2); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_I3, "ied-di4o4_i3"); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_EXT_IED_I3); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O0, "ied-di4o4_o0"); |
| gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O0, 0); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O1, "ied-di4o4_o1"); |
| gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O1, 0); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O2, "ied-di4o4_o2"); |
| gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O2, 0); |
| gpio_request(IOT_GATE_IMX8_GPIO_EXT_IED_O3, "ied-di4o4_o3"); |
| gpio_direction_output(IOT_GATE_IMX8_GPIO_EXT_IED_O3, 0); |
| } |
| |
| #define IOT_GATE_IMX8_GPIO_S0B0 IMX_GPIO_NR(6, 0) /* Slot ID slot 0 bit 0 */ |
| #define IOT_GATE_IMX8_GPIO_S0B1 IMX_GPIO_NR(6, 1) /* Slot ID slot 0 bit 1 */ |
| #define IOT_GATE_IMX8_GPIO_S0B2 IMX_GPIO_NR(6, 2) /* Slot ID slot 0 bit 2 */ |
| #define IOT_GATE_IMX8_GPIO_S1B0 IMX_GPIO_NR(6, 3) /* Slot ID slot 1 bit 0 */ |
| #define IOT_GATE_IMX8_GPIO_S1B1 IMX_GPIO_NR(6, 4) /* Slot ID slot 1 bit 1 */ |
| #define IOT_GATE_IMX8_GPIO_S1B2 IMX_GPIO_NR(6, 5) /* Slot ID slot 1 bit 2 */ |
| #define IOT_GATE_IMX8_GPIO_S2B0 IMX_GPIO_NR(6, 6) /* Slot ID slot 2 bit 0 */ |
| #define IOT_GATE_IMX8_GPIO_S2B1 IMX_GPIO_NR(6, 7) /* Slot ID slot 2 bit 1 */ |
| #define IOT_GATE_IMX8_GPIO_S2B2 IMX_GPIO_NR(6, 8) /* Slot ID slot 2 bit 2 */ |
| |
| /* |
| * iot_gate_imx8_update_ext_ied() |
| * Update device tree of the extended board IED-BASE. |
| * The device tree is updated according to the detected sub modules. |
| * |
| * Return 0 for success, 1 for failure. |
| */ |
| static int iot_gate_imx8_update_ext_ied(void) |
| { |
| int revision; |
| |
| if (iot_gate_imx8_ext_id != IOT_GATE_EXT_IED) |
| return 0; |
| |
| /* ID GPIO initializations */ |
| if (gpio_request(IOT_GATE_IMX8_GPIO_S0B0, "id_s0b0") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S0B1, "id_s0b1") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S0B2, "id_s0b2") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S1B0, "id_s1b0") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S1B1, "id_s1b1") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S1B2, "id_s1b2") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S2B0, "id_s2b0") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S2B1, "id_s2b1") || |
| gpio_request(IOT_GATE_IMX8_GPIO_S2B2, "id_s2b2")) { |
| printf("%s: ID GPIO request failure\n", __func__); |
| return 1; |
| } |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B0); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B1); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S0B2); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B0); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B1); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S1B2); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B0); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B1); |
| gpio_direction_input(IOT_GATE_IMX8_GPIO_S2B2); |
| |
| /* Get slot 0 card ID */ |
| revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S0B0) | |
| gpio_get_value(IOT_GATE_IMX8_GPIO_S0B1) << 1 | |
| gpio_get_value(IOT_GATE_IMX8_GPIO_S0B2) << 2; |
| iot_gate_imx8_ext_ied_id[0] = revision; |
| |
| /* Get slot 1 card ID */ |
| revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S1B0) | |
| gpio_get_value(IOT_GATE_IMX8_GPIO_S1B1) << 1 | |
| gpio_get_value(IOT_GATE_IMX8_GPIO_S1B2) << 2; |
| iot_gate_imx8_ext_ied_id[1] = revision; |
| |
| /* Get slot 2 card ID */ |
| revision = gpio_get_value(IOT_GATE_IMX8_GPIO_S2B0) | |
| gpio_get_value(IOT_GATE_IMX8_GPIO_S2B1) << 1 | |
| gpio_get_value(IOT_GATE_IMX8_GPIO_S2B2) << 2; |
| iot_gate_imx8_ext_ied_id[2] = revision; |
| |
| return 0; |
| } |
| |
| int board_fix_fdt(void *rw_fdt_blob) |
| { |
| return 0; |
| } |
| |
| int extension_board_scan(struct list_head *extension_list) |
| { |
| struct extension *extension = NULL; |
| int i; |
| int ret = 0; |
| |
| iot_gate_imx8_detect_ext(); /* Extended board detection */ |
| |
| switch(iot_gate_imx8_ext_id) { |
| case IOT_GATE_EXT_EMPTY: |
| break; |
| case IOT_GATE_EXT_CAN: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_EXT_CAN"); |
| break; |
| case IOT_GATE_EXT_IED: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_EXT_IED"); |
| snprintf(extension->overlay, sizeof(extension->overlay), |
| "imx8mm-cl-iot-gate-ied.dtbo"); |
| break; |
| case IOT_GATE_EXT_POE: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_EXT_POE"); |
| break; |
| case IOT_GATE_EXT_POEV2: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_EXT_POEV2"); |
| break; |
| default: |
| printf("IOT_GATE-iMX8 extension board: unknown\n"); |
| break; |
| } |
| |
| if (extension) { |
| snprintf(extension->owner, sizeof(extension->owner), |
| "Compulab"); |
| list_add_tail(&extension->list, extension_list); |
| ret = 1; |
| } else |
| return ret; |
| |
| iot_gate_imx8_update_pinmux(); |
| |
| iot_gate_imx8_update_ext_ied(); |
| for (i=0; i<ARRAY_SIZE(iot_gate_imx8_ext_ied_id); i++) { |
| extension = NULL; |
| switch (iot_gate_imx8_ext_ied_id[i]) { |
| case IOT_GATE_IMX8_CARD_ID_EMPTY: |
| break; |
| case IOT_GATE_IMX8_CARD_ID_RS_485: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_IMX8_CARD_ID_RS_485"); |
| break; |
| case IOT_GATE_IMX8_CARD_ID_RS_232: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_IMX8_CARD_ID_RS_232"); |
| break; |
| case IOT_GATE_IMX8_CARD_ID_CAN: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_IMX8_CARD_ID_CAN"); |
| snprintf(extension->overlay, sizeof(extension->overlay), |
| "imx8mm-cl-iot-gate-ied-can%d.dtbo", i); |
| break; |
| case IOT_GATE_IMX8_CARD_ID_TPM: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_IMX8_CARD_ID_TPM"); |
| snprintf(extension->overlay, sizeof(extension->overlay), |
| "imx8mm-cl-iot-gate-ied-tpm%d.dtbo", i); |
| break; |
| case IOT_GATE_IMX8_CARD_ID_CL420: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_IMX8_CARD_ID_CL420"); |
| snprintf(extension->overlay, sizeof(extension->overlay), |
| "imx8mm-cl-iot-gate-ied-can%d.dtbo", i); |
| break; |
| case IOT_GATE_IMX8_CARD_ID_DI4O4: |
| extension = calloc(1, sizeof(struct extension)); |
| snprintf(extension->name, sizeof(extension->name), |
| "IOT_GATE_IMX8_CARD_ID_DI4O4"); |
| break; |
| default: |
| printf("%s: invalid slot %d card ID: %d\n", |
| __func__, i, iot_gate_imx8_ext_ied_id[i]); |
| break; |
| } |
| if (extension) { |
| snprintf(extension->owner, sizeof(extension->owner), |
| "Compulab"); |
| snprintf(extension->other, sizeof(extension->other), |
| "On slot %d", i); |
| list_add_tail(&extension->list, extension_list); |
| ret = ret + 1; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static int setup_mac_address(void) |
| { |
| unsigned char enetaddr[6]; |
| struct udevice *dev; |
| int ret, off; |
| |
| ret = eth_env_get_enetaddr("ethaddr", enetaddr); |
| if (ret) |
| return 0; |
| |
| off = fdt_path_offset(gd->fdt_blob, "eeprom1"); |
| if (off < 0) { |
| printf("No eeprom0 path offset found in DT\n"); |
| return off; |
| } |
| |
| ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev); |
| if (ret) { |
| printf("%s: Could not find EEPROM\n", __func__); |
| return ret; |
| } |
| |
| ret = i2c_set_chip_offset_len(dev, 1); |
| if (ret) |
| return ret; |
| |
| ret = i2c_eeprom_read(dev, 4, enetaddr, sizeof(enetaddr)); |
| if (ret) { |
| printf("%s: Could not read EEPROM\n", __func__); |
| return ret; |
| } |
| |
| ret = is_valid_ethaddr(enetaddr); |
| if (!ret) |
| return -EINVAL; |
| |
| ret = eth_env_set_enetaddr("ethaddr", enetaddr); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int read_serial_number(void) |
| { |
| unsigned char serialnumber[6]; |
| unsigned char reversed[6]; |
| char serial_string[12]; |
| struct udevice *dev; |
| int ret, off, i; |
| |
| off = fdt_path_offset(gd->fdt_blob, "eeprom0"); |
| if (off < 0) { |
| printf("No eeprom0 path offset found in DT\n"); |
| return off; |
| } |
| |
| ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev); |
| if (ret) { |
| printf("%s: Could not find EEPROM\n", __func__); |
| return ret; |
| } |
| |
| ret = i2c_set_chip_offset_len(dev, 1); |
| if (ret) |
| return ret; |
| |
| ret = i2c_eeprom_read(dev, 0x14, serialnumber, sizeof(serialnumber)); |
| if (ret) { |
| printf("%s: Could not read EEPROM\n", __func__); |
| return ret; |
| } |
| |
| for (i = sizeof(serialnumber) - 1; i >= 0; i--) |
| reversed[i] = serialnumber[sizeof(serialnumber) - 1 - i]; |
| |
| for (i = 0; i < sizeof(reversed); i++) { |
| serial_string[i * 2] = (reversed[i] >> 4) & 0xf; |
| serial_string[i * 2 + 1] = reversed[i] & 0xf; |
| } |
| |
| for (i = 0; i < sizeof(serial_string); i++) |
| serial_string[i] += '0'; |
| |
| env_set("serial#", serial_string); |
| |
| return 0; |
| } |
| |
| int board_late_init(void) |
| { |
| int ret; |
| |
| if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG)) { |
| env_set("board_name", "IOT-GATE-IMX8"); |
| env_set("board_rev", "SBC-IOTMX8"); |
| } |
| |
| ret = setup_mac_address(); |
| if (ret < 0) |
| printf("Cannot set MAC address from EEPROM\n"); |
| |
| ret = read_serial_number(); |
| if (ret < 0) |
| printf("Cannot read serial number from EEPROM\n"); |
| |
| return 0; |
| } |