bd_common.c

/*
 * Copyright (C) 2017, Boundary Devices <info@boundarydevices.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <asm/arch/clock.h>
#ifndef CONFIG_MX7D
#ifndef CONFIG_MX51
#include <asm/arch/iomux.h>
#endif
#endif
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-imx/fbpanel.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <asm/mach-imx/sata.h>
#include <environment.h>
#include <i2c.h>
#include <linux/fb.h>
#include <version.h>
#include "bd_common.h"

DECLARE_GLOBAL_DATA_PTR;

int dram_init(void)
{
#if defined(CONFIG_MX51) || defined(CONFIG_MX7D)
	gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);
#else
	gd->ram_size = imx_ddr_size();
#endif
//	printf("%s:%p *%p=0x%lx\n", __func__, gd, &gd->ram_size, gd->ram_size);

	return 0;
}

/*
 * Do not overwrite the console
 * Use always serial for U-Boot console
 */
int overwrite_console(void)
{
	return 1;
}

void set_gpios_in(const unsigned short *p, int cnt)
{
	int i;

	for (i = 0; i < cnt; i++)
		gpio_direction_input(*p++);
}

void set_gpios(const unsigned short *p, int cnt, int val)
{
	int i;

	for (i = 0; i < cnt; i++)
		gpio_direction_output(*p++, val);
}

#ifdef CONFIG_FSL_ESDHC
int board_mmc_getcd(struct mmc *mmc)
{
	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
	int gp_cd = cfg->gp_cd;

	if (!gp_cd)
		return 1;	/* eMMC always present */
	return !gpio_get_value(gp_cd);
}

#if defined(CONFIG_MX51)
#define BASE1 MMC_SDHC1_BASE_ADDR
#define BASE2 MMC_SDHC2_BASE_ADDR
#define CNT CONFIG_SYS_FSL_ESDHC_NUM
#else
#define BASE1 USDHC1_BASE_ADDR
#define BASE2 USDHC2_BASE_ADDR
#define BASE3 USDHC3_BASE_ADDR
#define BASE4 USDHC4_BASE_ADDR
#define CNT CONFIG_SYS_FSL_USDHC_NUM
#endif

int board_mmc_init(bd_t *bis)
{
	int ret;
	u32 index = 0;

	for (index = 0; index < CNT; index++) {
		struct fsl_esdhc_cfg *cfg = &board_usdhc_cfg[index];

		if (cfg->esdhc_base == BASE1) {
			cfg->sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
		} else if (cfg->esdhc_base == BASE2) {
			cfg->sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
#ifndef CONFIG_MX51
		} else if (cfg->esdhc_base == BASE3) {
			cfg->sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
#ifndef CONFIG_MX7D
		} else if (cfg->esdhc_base == BASE4) {
			cfg->sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
#endif
#endif
		} else {
			printf("unknown esdhc base %lx\n", cfg->esdhc_base);
			break;
		}

		if (cfg->gp_cd)
			gpio_request(cfg->gp_cd, "usdhcx_cd");

		if (cfg->gp_reset) {
			gpio_request(cfg->gp_reset, "usdhcx_reset");
			gpio_set_value(cfg->gp_reset, 1); /* release reset */
		}

		ret = fsl_esdhc_initialize(bis, cfg);
		if (ret)
			return ret;
	}
	return 0;
}
#endif

#ifdef CONFIG_SPLASH_SCREEN
int splash_screen_prepare(void)
{
	char *env_loadsplash;

	if (!env_get("splashimage") || !env_get("splashsize")) {
		return -1;
	}

	env_loadsplash = env_get("loadsplash");
	if (env_loadsplash == NULL) {
		printf("Environment variable loadsplash not found!\n");
		return -1;
	}

	if (run_command_list(env_loadsplash, -1, 0)) {
		printf("failed to run loadsplash %s\n\n", env_loadsplash);
		return -1;
	}

	return 0;
}
#endif

#ifdef CONFIG_CMD_FBPANEL
int board_cfb_skip(void)
{
	return NULL != env_get("novideo");
}
#endif

void common_board_init(const struct i2c_pads_info *p, int i2c_bus_cnt, int otg_id,
		const struct display_info_t *displays, int display_cnt,
		int gp_hd_detect)
{
	int i;
#ifdef IOMUXC_GPR1_OTG_ID_MASK
	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;

	/* needed for i.mx6q, duallite doesn't need it, but doesn't hurt */
	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_OTG_ID_MASK, otg_id);
#endif
	p += i2c_get_info_entry_offset();

	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
	for (i = 0; i < i2c_bus_cnt; i++) {
	        setup_i2c(p->bus_index, CONFIG_SYS_I2C_SPEED, 0x7f, p);
		p += I2C_PADS_INFO_ENTRY_SPACING;
	}
#ifdef CONFIG_FAN53526
	fan53526_init();
#endif
#ifdef CONFIG_MAX77823
	max77823_init();
#endif
#ifdef CONFIG_TAMPER
	check_tamper();
#endif

#ifdef CONFIG_CMD_SATA
	if (!gp_hd_detect || gpio_get_value(gp_hd_detect))
		setup_sata();
#endif
#ifdef CONFIG_CMD_FBPANEL
	fbp_setup_display(displays, display_cnt);
#endif
}

int misc_init_r(void)
{
#ifdef CONFIG_PREBOOT
	board_preboot_keys();
#endif

#ifdef CONFIG_CMD_BMODE
	add_board_boot_modes(board_boot_modes);
#endif
	/*
	 * Not really needed as script checks for magic value in memory,
	 * but shouldn't hurt.
	 */
	env_set_hex("reset_cause", get_imx_reset_cause());

#ifdef CONFIG_MX7D
	set_wdog_reset((struct wdog_regs *)WDOG1_BASE_ADDR);
#endif
	return 0;
}

#ifdef CONFIG_PRINT_TIME_RV4162

/* RV4162 particulars */
#define RTC_I2CADDR 0x68
#define RTC_YEAR 7
#define RTC_MON  6
#define RTC_DAY  5
#define RTC_HOUR 3
#define RTC_MIN  2
#define RTC_SEC  1

static int frombcd(u8 val)
{
	return (10*(val>>4))+(val&0x0f);
}

static void print_time_rv4162(void)
{
	u8 orig_i2c_bus;

	orig_i2c_bus = i2c_get_bus_num();
	/* display date and time from RTC */
	if (!i2c_set_bus_num(0) &&
			!i2c_probe(RTC_I2CADDR)) {
		u8 buffer[16];
		int ret = i2c_read(RTC_I2CADDR, 0, 1, buffer, sizeof(buffer));

		if (ret)
			printf("Error %d reading RTC\n", ret);
		else
			printf("time: %04u-%02u-%02u %02u:%02u:%02u UTC\n",
			       2000+frombcd(buffer[RTC_YEAR]),
			       frombcd(buffer[RTC_MON]&0x1f),
			       frombcd(buffer[RTC_DAY]),
			       frombcd(buffer[RTC_HOUR]),
			       frombcd(buffer[RTC_MIN]),
			       frombcd(buffer[RTC_SEC]));
	}
	i2c_set_bus_num(orig_i2c_bus);
}
#else
static void print_time_rv4162(void) {}
#endif

#ifdef CONFIG_FEC_MXC
#define ADDMAC_OFFSET	0x800000
#else
#define ADDMAC_OFFSET	0
#endif

#if defined(CONFIG_ENV_WLMAC) || defined(CONFIG_ENV_BD_ADDR)
static void addmac_env(const char* env_var)
{
	unsigned char mac_address[8];
	char macbuf[20];

	if (!env_get(env_var)) {
		imx_get_mac_from_fuse(ADDMAC_OFFSET, mac_address);
		if (is_valid_ethaddr(mac_address)) {
			snprintf(macbuf, sizeof(macbuf), "%pM", mac_address);
			env_set(env_var, macbuf);
		}
	}
}
#endif

#if defined(CONFIG_CMD_FASTBOOT) || defined(CONFIG_CMD_DFU)
static void addserial_env(const char* env_var)
{
	unsigned char mac_address[8];
	char serialbuf[20];

	if (!env_get(env_var)) {
		imx_get_mac_from_fuse(0, mac_address);
		snprintf(serialbuf, sizeof(serialbuf), "%02x%02x%02x%02x%02x%02x",
			 mac_address[0], mac_address[1], mac_address[2],
			 mac_address[3], mac_address[4], mac_address[5]);
		env_set(env_var, serialbuf);
	}
}
#endif

#ifndef CONFIG_SYS_BOARD
/* CANNOT be in BSS section, will clobber relocation table */
const char *board_type = (void*)1;
#endif

int checkboard(void)
{
#ifdef CONFIG_SYS_BOARD
	puts("Board: " CONFIG_SYS_BOARD "\n");
#else
	board_type = board_get_board_type();
	puts("Board: ");
	puts(board_type);
	puts("\n");
#endif
	return 0;
}

static const char str_uboot_release[] = "uboot_release";
static const char cur_uboot_release[] = PLAIN_VERSION;

int board_late_init(void)
{
	char *uboot_release;
	int cpurev = get_cpu_rev();

#ifdef CONFIG_BOARD_LATE_SPECIFIC_INIT
	board_late_specific_init();
#endif
	env_set("cpu", get_imx_type((cpurev & 0xFF000) >> 12));
	env_set("imx_cpu", get_imx_type((cpurev & 0xFF000) >> 12));
#ifndef CONFIG_SYS_BOARD
	/*
	 * These lines are specific to nitrogen6x, as
	 * everyone else has board in their default environment.
	 */
	if (!env_get("board"))
		env_set("board", board_type);
#endif
	env_set("uboot_defconfig", CONFIG_DEFCONFIG);
#ifdef CONFIG_ENV_WLMAC
	addmac_env("wlmac");
#endif
#ifdef CONFIG_ENV_BD_ADDR
	addmac_env("bd_addr");
#endif
#if defined(CONFIG_CMD_FASTBOOT) || defined(CONFIG_CMD_DFU)
	addserial_env("serial#");
#endif
	print_time_rv4162();

#if !defined(CONFIG_ENV_IS_NOWHERE)
	uboot_release = env_get(str_uboot_release);
	if (!uboot_release || strcmp(cur_uboot_release, uboot_release)) {
		env_set(str_uboot_release, cur_uboot_release);
		if (uboot_release) {
			/*
			 * if already saved in environment, correct value
			 */
			env_save();
		}
	}
#endif
	return 0;
}