// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2018 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "kp_id_rev.h" #define BOOSTER_OFF IMX_GPIO_NR(2, 23) #define LCD_BACKLIGHT IMX_GPIO_NR(1, 1) #define KEY1 IMX_GPIO_NR(2, 26) #define LED_RED IMX_GPIO_NR(3, 28) DECLARE_GLOBAL_DATA_PTR; int dram_init(void) { u32 size; size = get_ram_size((void *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE); gd->ram_size = size; return 0; } int dram_init_banksize(void) { gd->bd->bi_dram[0].start = PHYS_SDRAM_1; gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; return 0; } static int power_init(void) { struct udevice *dev; int ret; ret = pmic_get("mc34708@8", &dev); if (ret) { printf("%s: mc34708 not found !\n", __func__); return ret; } /* Set VDDGP to 1.110V for 800 MHz on SW1 */ pmic_clrsetbits(dev, REG_SW_0, SWx_VOLT_MASK_MC34708, SWx_1_110V_MC34708); /* Set VCC as 1.30V on SW2 */ pmic_clrsetbits(dev, REG_SW_1, SWx_VOLT_MASK_MC34708, SWx_1_300V_MC34708); /* Set global reset timer to 4s */ pmic_clrsetbits(dev, REG_POWER_CTL2, TIMER_MASK_MC34708, TIMER_4S_MC34708); return ret; } static void setup_clocks(void) { int ret; u32 ref_clk = MXC_HCLK; /* * CPU clock set to 800MHz and DDR to 400MHz */ ret = mxc_set_clock(ref_clk, 800, MXC_ARM_CLK); if (ret) printf("CPU: Switch CPU clock to 800MHZ failed\n"); ret = mxc_set_clock(ref_clk, 400, MXC_PERIPH_CLK); ret |= mxc_set_clock(ref_clk, 400, MXC_DDR_CLK); if (ret) printf("CPU: Switch DDR clock to 400MHz failed\n"); } static void setup_ups(void) { gpio_request(BOOSTER_OFF, "BOOSTER_OFF"); gpio_direction_output(BOOSTER_OFF, 0); } int board_early_init_f(void) { return 0; } /* * Do not overwrite the console * Use always serial for U-Boot console */ int overwrite_console(void) { return 1; } int board_init(void) { gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; return 0; } void board_disable_display(void) { gpio_request(LCD_BACKLIGHT, "LCD_BACKLIGHT"); gpio_direction_output(LCD_BACKLIGHT, 0); } void board_misc_setup(void) { gpio_request(KEY1, "KEY1_GPIO"); gpio_direction_input(KEY1); if (gpio_get_value(KEY1)) env_set("key1", "off"); else env_set("key1", "on"); } int board_late_init(void) { int ret = 0; board_disable_display(); setup_ups(); if (!power_init()) setup_clocks(); ret = read_eeprom(); if (ret) printf("Error %d reading EEPROM content!\n", ret); show_eeprom(); read_board_id(); board_misc_setup(); return ret; } #if CONFIG_IS_ENABLED(BOOTSTAGE) #define GPIO_DR 0x0 #define GPIO_GDIR 0x4 #define GPIO_ALT1 0x1 #define GPIO5_BASE 0x53FDC000 #define IOMUXC_EIM_WAIT 0x53FA81E4 /* Green LED: GPIO5_0 */ #define GPIO_GREEN BIT(0) void show_boot_progress(int status) { /* * This BOOTSTAGE_ID is called at very early stage of execution. DM gpio * is not yet initialized. */ if (status == BOOTSTAGE_ID_START_UBOOT_F) { /* * After ROM execution the EIM_WAIT PAD is set as ALT0 * (according to RM it shall be ALT1 after reset). To use it as * GPIO we need to set it to ALT1. */ setbits_le32(((uint32_t *)(IOMUXC_EIM_WAIT)), GPIO_ALT1); /* Configure green LED GPIO pin direction */ setbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_GDIR)), GPIO_GREEN); /* Turn on green LED */ setbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_DR)), GPIO_GREEN); } /* * This BOOTSTAGE_ID is called just before handling execution to kernel * - i.e. gpio subsystem is already initialized */ if (status == BOOTSTAGE_ID_BOOTM_HANDOFF) { /* * Off green LED - the same approach - i.e. non dm gpio * (*bits_le32) is used as in the very early stage. */ clrbits_le32(((uint32_t *)(GPIO5_BASE + GPIO_DR)), GPIO_GREEN); /* * On red LED */ gpio_request(LED_RED, "LED_RED_ERROR"); gpio_direction_output(LED_RED, 1); } } #endif