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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2011
* egnite GmbH <info@egnite.de>
*
* Configuation settings for Ethernut 5 with AT91SAM9XE.
*/
#ifndef __CONFIG_H
#define __CONFIG_H
#include <asm/hardware.h>
/* The first stage boot loader expects u-boot running at this address. */
/* The first stage boot loader takes care of low level initialization. */
/* CPU information */
/* ARM asynchronous clock */
#define CFG_SYS_AT91_SLOW_CLOCK 32768 /* slow clock xtal */
#define CFG_SYS_AT91_MAIN_CLOCK 18432000 /* 18.432 MHz crystal */
/* 32kB internal SRAM */
#define CFG_SYS_INIT_RAM_ADDR 0x00300000 /*AT91SAM9XE_SRAM_BASE */
#define CFG_SYS_INIT_RAM_SIZE (32 << 10)
/* 128MB SDRAM in 1 bank */
#define CFG_SYS_SDRAM_BASE 0x20000000
#define CFG_SYS_SDRAM_SIZE (128 << 20)
/* 512kB on-chip NOR flash */
# define CFG_SYS_FLASH_BASE 0x00200000 /* AT91SAM9XE_FLASH_BASE */
/* bootstrap + u-boot + env + linux in dataflash on CS0 */
/* NAND flash */
#ifdef CONFIG_CMD_NAND
#define CFG_SYS_NAND_BASE 0x40000000
/* our ALE is AD21 */
#define CFG_SYS_NAND_MASK_ALE (1 << 21)
/* our CLE is AD22 */
#define CFG_SYS_NAND_MASK_CLE (1 << 22)
#define CFG_SYS_NAND_ENABLE_PIN GPIO_PIN_PC(14)
#endif
/* JFFS2 */
/* Ethernet */
#define CFG_PHY_ID 0
/* MMC */
#ifdef CONFIG_CMD_MMC
#define CFG_SYS_MMC_CD_PIN AT91_PIO_PORTC, 8
#endif
/* RTC */
#if defined(CONFIG_CMD_DATE) || defined(CONFIG_CMD_SNTP)
#define CFG_SYS_I2C_RTC_ADDR 0x51
#endif
/* I2C */
#define CFG_SYS_MAX_I2C_BUS 1
#define I2C_SOFT_DECLARATIONS
#define GPIO_I2C_SCL AT91_PIO_PORTA, 24
#define GPIO_I2C_SDA AT91_PIO_PORTA, 23
#define I2C_INIT { \
at91_set_pio_periph(AT91_PIO_PORTA, 23, 0); \
at91_set_pio_multi_drive(AT91_PIO_PORTA, 23, 1); \
at91_set_pio_periph(AT91_PIO_PORTA, 24, 0); \
at91_set_pio_output(AT91_PIO_PORTA, 24, 0); \
at91_set_pio_multi_drive(AT91_PIO_PORTA, 24, 1); \
}
#define I2C_ACTIVE at91_set_pio_output(AT91_PIO_PORTA, 23, 0)
#define I2C_TRISTATE at91_set_pio_input(AT91_PIO_PORTA, 23, 0)
#define I2C_SCL(bit) at91_set_pio_value(AT91_PIO_PORTA, 24, bit)
#define I2C_SDA(bit) at91_set_pio_value(AT91_PIO_PORTA, 23, bit)
#define I2C_DELAY udelay(100)
#define I2C_READ at91_get_pio_value(AT91_PIO_PORTA, 23)
/* File systems */
/* Boot command */
/* Misc. u-boot settings */
#endif
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