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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 David Lechner <david@lechnology.com>
*
* Based on da850evm.c
*
* Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
*
* Based on da830evm.c. Original Copyrights follow:
*
* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*/
#include <common.h>
#include <env.h>
#include <i2c.h>
#include <init.h>
#include <spi.h>
#include <spi_flash.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pinmux_defs.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/davinci_misc.h>
#include <linux/errno.h>
#include <hwconfig.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <dm/uclass.h>
DECLARE_GLOBAL_DATA_PTR;
#define EEPROM_I2C_ADDR 0x50
#define EEPROM_REV_OFFSET 0x3F00
#define EEPROM_BDADDR_OFFSET 0x3F06
const struct pinmux_resource pinmuxes[] = {
PINMUX_ITEM(spi0_pins_base),
PINMUX_ITEM(spi0_pins_scs0),
PINMUX_ITEM(uart1_pins_txrx),
PINMUX_ITEM(i2c0_pins),
PINMUX_ITEM(mmc0_pins),
};
const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
const struct lpsc_resource lpsc[] = {
{ DAVINCI_LPSC_SPI0 }, /* Serial Flash */
{ DAVINCI_LPSC_UART1 }, /* console */
{ DAVINCI_LPSC_MMC_SD },
};
const int lpsc_size = ARRAY_SIZE(lpsc);
/*
* The Bluetooth address serves as the board serial number.
*/
static void setup_serial_number(void)
{
struct udevice *idev, *ibus;
int ret;
u32 offset;
char serial_number[13];
u8 buf[6];
u8 eeprom_rev;
if (env_get("serial#"))
return;
ret = uclass_get_device_by_seq(UCLASS_I2C, 0, &ibus);
if (ret)
return;
ret = dm_i2c_probe(ibus, EEPROM_I2C_ADDR, 0, &idev);
if (ret)
return;
if (dm_i2c_read(idev, EEPROM_REV_OFFSET, buf, 2)) {
printf("\nEEPROM revision read failed!\n");
return;
}
/*
* EEPROM rev 3 has Bluetooth address at EEPROM_REV_OFFSET.
* Other revisions have checksum at EEPROM_REV_OFFSET+1
* to detect this.
*/
if ((buf[0] ^ buf[1]) == 0xFF)
eeprom_rev = buf[0];
else
eeprom_rev = 3;
/* EEPROM rev 3 has Bluetooth address where rev should be */
offset = (eeprom_rev == 3) ? EEPROM_REV_OFFSET : EEPROM_BDADDR_OFFSET;
if (dm_i2c_read(idev, offset, buf, 6)) {
printf("\nEEPROM serial read failed!\n");
return;
}
sprintf(serial_number, "%02X%02X%02X%02X%02X%02X",
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
env_set("serial#", serial_number);
}
int board_early_init_f(void)
{
/* enable the console UART */
writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
DAVINCI_UART_PWREMU_MGMT_UTRST),
&davinci_uart1_ctrl_regs->pwremu_mgmt);
/*
* Power on required peripherals
* ARM does not have access by default to PSC0 and PSC1
* assuming here that the DSP bootloader has set the IOPU
* such that PSC access is available to ARM
*/
if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
return 1;
return 0;
}
int board_init(void)
{
irq_init();
/* address of boot parameters */
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
/* setup the SUSPSRC for ARM to control emulation suspend */
writel(readl(&davinci_syscfg_regs->suspsrc) &
~(DAVINCI_SYSCFG_SUSPSRC_I2C |
DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
DAVINCI_SYSCFG_SUSPSRC_UART1),
&davinci_syscfg_regs->suspsrc);
/* configure pinmux settings */
if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
return 1;
return 0;
}
int board_late_init(void)
{
setup_serial_number();
return 0;
}
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