blob: 27200f728efedbb90d6bc148edb9c7a4ddadba5e [file] [log] [blame]
// 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;
}