xref: /openbmc/u-boot/include/configs/at91rm9200ek.h (revision 2fe88d452268d61b5ca9cb0b1dda2974cc43faeb)

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2010 Andreas Bießmann <biessmann.devel@googlemail.com>
 *
 * based on previous work by
 *
 * Ulf Samuelsson <ulf@atmel.com>
 * Rick Bronson <rick@efn.org>
 *
 * Configuration settings for the AT91RM9200EK board.
 */

#ifndef __AT91RM9200EK_CONFIG_H__
#define __AT91RM9200EK_CONFIG_H__

#include <linux/sizes.h>

/*
 * set some initial configurations depending on configure target
 *
 * at91rm9200ek_config     -> boot from 0x0 in NOR Flash at CS0
 * at91rm9200ek_ram_config -> continue booting from 0x20100000 in RAM; lowlevel
 *                            initialisation was done by some preloader
 */
#ifdef CONFIG_RAMBOOT
#define CONFIG_SKIP_LOWLEVEL_INIT
#endif

/*
 * AT91C_XTAL_CLOCK is the frequency of external xtal in hertz
 * AT91C_MAIN_CLOCK is the frequency of PLLA output
 * AT91C_MASTER_CLOCK is the peripherial clock
 * CONFIG_SYS_HZ_CLOCK is the value for CCR in tc0 (divider 2 is implicitely
 *  set in arch/arm/cpu/arm920t/at91/timer.c)
 * CONFIG_SYS_HZ is the tick rate for timer tc0
 */
#define AT91C_XTAL_CLOCK		18432000
#define CONFIG_SYS_AT91_SLOW_CLOCK	32768
#define AT91C_MAIN_CLOCK		((AT91C_XTAL_CLOCK / 4) * 39)
#define AT91C_MASTER_CLOCK		(AT91C_MAIN_CLOCK / 3 )
#define CONFIG_SYS_HZ_CLOCK		(AT91C_MASTER_CLOCK / 2)

/* CPU configuration */
#define CONFIG_AT91RM9200
#define CONFIG_AT91RM9200EK
#define USE_920T_MMU

#include <asm/hardware.h>	/* needed for port definitions */

#define CONFIG_CMDLINE_TAG
#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_INITRD_TAG

/*
 * Memory Configuration
 */
#define CONFIG_SYS_SDRAM_BASE		0x20000000
#define CONFIG_SYS_SDRAM_SIZE		SZ_32M

#define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
#define CONFIG_SYS_MEMTEST_END		\
		(CONFIG_SYS_MEMTEST_START + CONFIG_SYS_SDRAM_SIZE - SZ_256K)

/*
 * LowLevel Init
 */
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
#define CONFIG_SYS_USE_MAIN_OSCILLATOR
/* flash */
#define CONFIG_SYS_EBI_CFGR_VAL	0x00000000
#define CONFIG_SYS_SMC_CSR0_VAL	0x00003284 /* 16bit, 2 TDF, 4 WS */

/* clocks */
#define CONFIG_SYS_PLLAR_VAL	0x20263E04 /* 179.712000 MHz for PCK */
#define CONFIG_SYS_PLLBR_VAL	0x10483E0E /* 48.054857 MHz (divider by 2 for USB) */
/* PCK/3 = MCK Master Clock = 59.904000MHz from PLLA */
#define CONFIG_SYS_MCKR_VAL	0x00000202

/* sdram */
#define CONFIG_SYS_PIOC_ASR_VAL	0xFFFF0000 /* Configure PIOC as peripheral (D16/D31) */
#define CONFIG_SYS_PIOC_BSR_VAL	0x00000000
#define CONFIG_SYS_PIOC_PDR_VAL	0xFFFF0000
#define CONFIG_SYS_EBI_CSA_VAL	0x00000002 /* CS1=CONFIG_SYS_SDRAM */
#define CONFIG_SYS_SDRC_CR_VAL	0x2188c155 /* set up the CONFIG_SYS_SDRAM */
#define CONFIG_SYS_SDRAM	CONFIG_SYS_SDRAM_BASE /* address of the SDRAM */
#define CONFIG_SYS_SDRAM1	(CONFIG_SYS_SDRAM_BASE+0x80)
#define CONFIG_SYS_SDRAM_VAL	0x00000000 /* value written to CONFIG_SYS_SDRAM */
#define CONFIG_SYS_SDRC_MR_VAL	0x00000002 /* Precharge All */
#define CONFIG_SYS_SDRC_MR_VAL1	0x00000004 /* refresh */
#define CONFIG_SYS_SDRC_MR_VAL2	0x00000003 /* Load Mode Register */
#define CONFIG_SYS_SDRC_MR_VAL3	0x00000000 /* Normal Mode */
#define CONFIG_SYS_SDRC_TR_VAL	0x000002E0 /* Write refresh rate */
#endif	/* CONFIG_SKIP_LOWLEVEL_INIT */

/*
 * Hardware drivers
 */
/*
 * Choose a USART for serial console
 * CONFIG_DBGU is DBGU unit on J10
 * CONFIG_USART1 is USART1 on J14
 */
#define CONFIG_ATMEL_USART
#define CONFIG_USART_BASE	ATMEL_BASE_DBGU
#define CONFIG_USART_ID		0/* ignored in arm */

/*
 * Command line configuration.
 */

/*
 * Network Driver Setting
 */
#define CONFIG_DRIVER_AT91EMAC
#define CONFIG_SYS_RX_ETH_BUFFER	16
#define CONFIG_RMII

/*
 * NOR Flash
 */
#define CONFIG_SYS_FLASH_BASE		0x10000000
#define PHYS_FLASH_1			CONFIG_SYS_FLASH_BASE
#define PHYS_FLASH_SIZE			SZ_8M
#define CONFIG_SYS_MAX_FLASH_BANKS	1
#define CONFIG_SYS_MAX_FLASH_SECT	256

/*
 * USB Config
 */
#define CONFIG_USB_ATMEL			1
#define CONFIG_USB_ATMEL_CLK_SEL_PLLB
#define CONFIG_USB_OHCI_NEW			1

#define CONFIG_SYS_USB_OHCI_CPU_INIT		1
#define CONFIG_SYS_USB_OHCI_REGS_BASE		ATMEL_USB_HOST_BASE
#define CONFIG_SYS_USB_OHCI_SLOT_NAME		"at91rm9200"
#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	15

/*
 * Environment Settings
 */

/*
 * after u-boot.bin
 */
#define CONFIG_ENV_ADDR			\
		(CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN)
#define CONFIG_ENV_SIZE			SZ_64K /* sectors are 64K here */
/* The following #defines are needed to get flash environment right */
#define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_FLASH_BASE
#define CONFIG_SYS_MONITOR_LEN		SZ_256K

/*
 * Boot option
 */

/* default load address */
#define CONFIG_SYS_LOAD_ADDR		CONFIG_SYS_SDRAM_BASE + SZ_16M
#define CONFIG_ENV_OVERWRITE

/*
 * Shell Settings
 */

/*
 * Size of malloc() pool
 */
#define CONFIG_SYS_MALLOC_LEN		ROUND(3 * CONFIG_ENV_SIZE + SZ_128K, \
					     SZ_4K)

#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_SDRAM_BASE + SZ_4K \
					- GENERATED_GBL_DATA_SIZE)

#endif /* __AT91RM9200EK_CONFIG_H__ */