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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 - http://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 <i2c.h>
#include <spi.h>
#include <spi_flash.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pinmux_defs.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>
DECLARE_GLOBAL_DATA_PTR;
u8 board_rev;
#define EEPROM_I2C_ADDR 0x50
#define EEPROM_REV_OFFSET 0x3F00
#define EEPROM_MAC_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);
u32 get_board_rev(void)
{
u8 buf[2];
if (!board_rev) {
if (i2c_read(EEPROM_I2C_ADDR, EEPROM_REV_OFFSET, 2, buf, 2)) {
printf("\nBoard revision read failed!\n");
} else {
/*
* Board rev 3 has MAC address at EEPROM_REV_OFFSET.
* Other revisions have checksum at EEPROM_REV_OFFSET+1
* to detect this.
*/
if ((buf[0] ^ buf[1]) == 0xFF)
board_rev = buf[0];
else
board_rev = 3;
}
}
return board_rev;
}
/*
* The Bluetooth MAC address serves as the board serial number.
*/
void get_board_serial(struct tag_serialnr *serialnr)
{
u32 offset;
u8 buf[6];
if (!board_rev)
board_rev = get_board_rev();
/* Board rev 3 has MAC address where rev should be */
offset = (board_rev == 3) ? EEPROM_REV_OFFSET : EEPROM_MAC_OFFSET;
if (i2c_read(EEPROM_I2C_ADDR, offset, 2, buf, 6)) {
printf("\nBoard serial read failed!\n");
} else {
u8 *nr;
nr = (u8 *)&serialnr->low;
nr[0] = buf[5];
nr[1] = buf[4];
nr[2] = buf[3];
nr[3] = buf[2];
nr = (u8 *)&serialnr->high;
nr[0] = buf[1];
nr[1] = buf[0];
nr[2] = 0;
nr[3] = 0;
}
}
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();
/* arch number of the board */
/* LEGO didn't register for a unique number and uses da850evm */
gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
/* 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;
}
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