2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-12-29 06:23:07 +00:00
u-boot/board/siemens/capricorn/board.c

450 lines
9.8 KiB
C
Raw Normal View History

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2017-2019 NXP
*
* Copyright 2019 Siemens AG
*
*/
#include <common.h>
#include <command.h>
#include <dm.h>
#include <env.h>
#include <errno.h>
#include <init.h>
#include <log.h>
#include <netdev.h>
#include <env_internal.h>
#include <fsl_esdhc_imx.h>
#include <i2c.h>
#include <led.h>
#include <pca953x.h>
#include <power-domain.h>
#include <asm/gpio.h>
#include <asm/arch/imx8-pins.h>
#include <asm/arch/iomux.h>
#include <asm/arch/sci/sci.h>
#include <asm/arch/sys_proto.h>
#ifndef CONFIG_SPL
#include <asm/arch-imx8/clock.h>
#endif
#include <linux/delay.h>
#include "../common/factoryset.h"
#define GPIO_PAD_CTRL \
((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
(SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
(SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
(SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
#define ENET_NORMAL_PAD_CTRL \
((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
(SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
(SC_PAD_28FDSOI_DSE_18V_10MA << PADRING_DSE_SHIFT) | \
(SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
#define UART_PAD_CTRL \
((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
(SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
(SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
(SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
static iomux_cfg_t uart2_pads[] = {
SC_P_UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
SC_P_UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static void setup_iomux_uart(void)
{
imx8_iomux_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
}
int board_early_init_f(void)
{
/* Set UART clock root to 80 MHz */
sc_pm_clock_rate_t rate = SC_80MHZ;
int ret;
ret = sc_pm_setup_uart(SC_R_UART_0, rate);
ret |= sc_pm_setup_uart(SC_R_UART_2, rate);
if (ret)
return ret;
setup_iomux_uart();
return 0;
}
#define ENET_PHY_RESET IMX_GPIO_NR(0, 3)
#define ENET_TEST_1 IMX_GPIO_NR(0, 8)
#define ENET_TEST_2 IMX_GPIO_NR(0, 9)
/*#define ETH_IO_TEST*/
static iomux_cfg_t enet_reset[] = {
SC_P_ESAI0_SCKT | MUX_MODE_ALT(4) | MUX_PAD_CTRL(GPIO_PAD_CTRL),
#ifdef ETH_IO_TEST
/* GPIO0.IO08 MODE3: TXD0 */
SC_P_ESAI0_TX4_RX1 | MUX_MODE_ALT(4) |
MUX_PAD_CTRL(ENET_NORMAL_PAD_CTRL),
/* GPIO0.IO09 MODE3: TXD1 */
SC_P_ESAI0_TX5_RX0 | MUX_MODE_ALT(4) |
MUX_PAD_CTRL(ENET_NORMAL_PAD_CTRL),
#endif
};
static void enet_device_phy_reset(void)
{
int ret = 0;
imx8_iomux_setup_multiple_pads(enet_reset, ARRAY_SIZE(enet_reset));
ret = gpio_request(ENET_PHY_RESET, "enet_phy_reset");
if (!ret) {
gpio_direction_output(ENET_PHY_RESET, 1);
gpio_set_value(ENET_PHY_RESET, 0);
/* SMSC9303 TRM chapter 14.5.2 */
udelay(200);
gpio_set_value(ENET_PHY_RESET, 1);
} else {
printf("ENET RESET failed!\n");
}
#ifdef ETH_IO_TEST
ret = gpio_request(ENET_TEST_1, "enet_test1");
if (!ret) {
int i;
printf("ENET TEST 1!\n");
for (i = 0; i < 20; i++) {
gpio_direction_output(ENET_TEST_1, 1);
gpio_set_value(ENET_TEST_1, 0);
udelay(50);
gpio_set_value(ENET_TEST_1, 1);
udelay(50);
}
gpio_free(ENET_TEST_1);
} else {
printf("GPIO for ENET TEST 1 failed!\n");
}
ret = gpio_request(ENET_TEST_2, "enet_test2");
if (!ret) {
int i;
printf("ENET TEST 2!\n");
for (i = 0; i < 20; i++) {
gpio_direction_output(ENET_TEST_2, 1);
gpio_set_value(ENET_TEST_2, 0);
udelay(50);
gpio_set_value(ENET_TEST_2, 1);
udelay(50);
}
gpio_free(ENET_TEST_2);
} else {
printf("GPIO for ENET TEST 2 failed!\n");
}
#endif
}
int setup_gpr_fec(void)
{
sc_ipc_t ipc_handle = -1;
sc_err_t err = 0;
unsigned int test;
/*
* TX_CLK_SEL: it controls a mux between clock coming from the pad 50M
* input pin and clock generated internally to connectivity subsystem
* 0: internal clock
* 1: external clock ---> your choice for RMII
*
* CLKDIV_SEL: it controls a div by 2 on the internal clock path à
* it should be dont care when using external clock
* 0: non-divided clock
* 1: clock divided by 2
* 50_DISABLE or 125_DISABLE:
* its used to disable the clock tree going outside the chip
* when reference clock is generated internally.
* It should be dont care when reference clock is provided
* externally.
* 0: clock is enabled
* 1: clock is disabled
*
* SC_C_TXCLK = 24,
* SC_C_CLKDIV = 25,
* SC_C_DISABLE_50 = 26,
* SC_C_DISABLE_125 = 27,
*/
err = sc_misc_set_control(ipc_handle, SC_R_ENET_1, SC_C_TXCLK, 1);
if (err != SC_ERR_NONE)
printf("Error in setting up SC_C %d\n\r", SC_C_TXCLK);
sc_misc_get_control(ipc_handle, SC_R_ENET_1, SC_C_TXCLK, &test);
debug("TEST SC_C %d-->%d\n\r", SC_C_TXCLK, test);
err = sc_misc_set_control(ipc_handle, SC_R_ENET_1, SC_C_CLKDIV, 0);
if (err != SC_ERR_NONE)
printf("Error in setting up SC_C %d\n\r", SC_C_CLKDIV);
sc_misc_get_control(ipc_handle, SC_R_ENET_1, SC_C_CLKDIV, &test);
debug("TEST SC_C %d-->%d\n\r", SC_C_CLKDIV, test);
err = sc_misc_set_control(ipc_handle, SC_R_ENET_1, SC_C_DISABLE_50, 0);
if (err != SC_ERR_NONE)
printf("Error in setting up SC_C %d\n\r", SC_C_DISABLE_50);
sc_misc_get_control(ipc_handle, SC_R_ENET_1, SC_C_TXCLK, &test);
debug("TEST SC_C %d-->%d\n\r", SC_C_DISABLE_50, test);
err = sc_misc_set_control(ipc_handle, SC_R_ENET_1, SC_C_DISABLE_125, 1);
if (err != SC_ERR_NONE)
printf("Error in setting up SC_C %d\n\r", SC_C_DISABLE_125);
sc_misc_get_control(ipc_handle, SC_R_ENET_1, SC_C_TXCLK, &test);
debug("TEST SC_C %d-->%d\n\r", SC_C_DISABLE_125, test);
err = sc_misc_set_control(ipc_handle, SC_R_ENET_1, SC_C_SEL_125, 1);
if (err != SC_ERR_NONE)
printf("Error in setting up SC_C %d\n\r", SC_C_SEL_125);
sc_misc_get_control(ipc_handle, SC_R_ENET_1, SC_C_SEL_125, &test);
debug("TEST SC_C %d-->%d\n\r", SC_C_SEL_125, test);
return 0;
}
#if IS_ENABLED(CONFIG_FEC_MXC)
#include <miiphy.h>
int board_phy_config(struct phy_device *phydev)
{
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
#endif
static int setup_fec(void)
{
setup_gpr_fec();
/* Reset ENET PHY */
enet_device_phy_reset();
return 0;
}
void reset_cpu(void)
{
}
#ifndef CONFIG_SPL_BUILD
/* LED's */
static int board_led_init(void)
{
struct udevice *bus, *dev;
u8 pca_led[2] = { 0x00, 0x00 };
int ret;
/* enable all leds on PCA9552 */
ret = uclass_get_device_by_seq(UCLASS_I2C, PCA9552_1_I2C_BUS, &bus);
if (ret) {
printf("ERROR: I2C get %d\n", ret);
return ret;
}
ret = dm_i2c_probe(bus, PCA9552_1_I2C_ADDR, 0, &dev);
if (ret) {
printf("ERROR: PCA9552 probe failed\n");
return ret;
}
ret = dm_i2c_write(dev, 0x16, pca_led, sizeof(pca_led));
if (ret) {
printf("ERROR: PCA9552 write failed\n");
return ret;
}
mdelay(1);
return ret;
}
#endif /* !CONFIG_SPL_BUILD */
int checkboard(void)
{
puts("Board: Capricorn\n");
/*
* Running build_info() doesn't work with current SCFW blob.
* Uncomment below call when new blob is available.
*/
/*build_info();*/
print_bootinfo();
return 0;
}
int board_init(void)
{
setup_fec();
return 0;
}
#ifdef CONFIG_OF_BOARD_SETUP
int ft_board_setup(void *blob, struct bd_info *bd)
{
return 0;
}
#endif
int board_mmc_get_env_dev(int devno)
{
return devno;
}
static int check_mmc_autodetect(void)
{
char *autodetect_str = env_get("mmcautodetect");
if (autodetect_str && (strcmp(autodetect_str, "yes") == 0))
return 1;
return 0;
}
/* This should be defined for each board */
__weak int mmc_map_to_kernel_blk(int dev_no)
{
return dev_no;
}
void board_late_mmc_env_init(void)
{
char cmd[32];
char mmcblk[32];
u32 dev_no = mmc_get_env_dev();
if (!check_mmc_autodetect())
return;
env_set_ulong("mmcdev", dev_no);
/* Set mmcblk env */
sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw",
mmc_map_to_kernel_blk(dev_no));
env_set("mmcroot", mmcblk);
sprintf(cmd, "mmc dev %d", dev_no);
run_command(cmd, 0);
}
#ifndef CONFIG_SPL_BUILD
int factoryset_read_eeprom(int i2c_addr);
static int load_parameters_from_factoryset(void)
{
int ret;
ret = factoryset_read_eeprom(EEPROM_I2C_ADDR);
if (ret)
return ret;
return factoryset_env_set();
}
int board_late_init(void)
{
env_set("sec_boot", "no");
#ifdef CONFIG_AHAB_BOOT
env_set("sec_boot", "yes");
#endif
#ifdef CONFIG_ENV_IS_IN_MMC
board_late_mmc_env_init();
#endif
/* Init LEDs */
if (board_led_init())
printf("I2C LED init failed\n");
/* Set environment from factoryset */
if (load_parameters_from_factoryset())
printf("Loading factoryset parameters failed!\n");
return 0;
}
/* Service button */
#define MAX_PIN_NUMBER 128
#define BOARD_DEFAULT_BUTTON_GPIO IMX_GPIO_NR(1, 31)
unsigned char get_button_state(char * const envname, unsigned char def)
{
int button = 0;
int gpio;
char *ptr_env;
/* If button is not found we take default */
ptr_env = env_get(envname);
if (!ptr_env) {
printf("Using default: %u\n", def);
gpio = def;
} else {
gpio = (unsigned char)simple_strtoul(ptr_env, NULL, 0);
if (gpio > MAX_PIN_NUMBER)
gpio = def;
}
gpio_request(gpio, "");
gpio_direction_input(gpio);
if (gpio_get_value(gpio))
button = 1;
else
button = 0;
gpio_free(gpio);
return button;
}
/*
* This command returns the status of the user button on
* Input - none
* Returns - 1 if button is held down
* 0 if button is not held down
*/
static int
do_userbutton(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
int button = 0;
button = get_button_state("button_usr1", BOARD_DEFAULT_BUTTON_GPIO);
if (argc > 1)
printf("Button state: %u\n", button);
return button;
}
U_BOOT_CMD(
usrbutton, CONFIG_SYS_MAXARGS, 2, do_userbutton,
"Return the status of user button",
"[print]"
);
#define ERST IMX_GPIO_NR(0, 3)
static int
do_eth_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
gpio_request(ERST, "ERST");
gpio_direction_output(ERST, 0);
udelay(200);
gpio_set_value(ERST, 1);
return 0;
}
U_BOOT_CMD(
switch_rst, CONFIG_SYS_MAXARGS, 2, do_eth_reset,
"Reset eth phy",
"[print]"
);
#endif /* ! CONFIG_SPL_BUILD */