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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018
* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
*/
#include <common.h>
#include <init.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/clock.h>
#include <asm/arch/iomux-mx53.h>
#include <asm/arch/clock.h>
#include <asm/gpio.h>
#include <env.h>
#include <power/pmic.h>
#include <fsl_pmic.h>
#include <bootstage.h>
#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;
}
#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);
}
}
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