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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* bur_am335x_common.h
*
* common parts used by B&R AM335x based boards
*
* Copyright (C) 2016 Hannes Schmelzer <oe5hpm@oevsv.at> -
* Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
*/
#ifndef __BUR_AM335X_COMMON_H__
#define __BUR_AM335X_COMMON_H__
/* ------------------------------------------------------------------------- */
/* legacy #defines for non DM bur-board */
#ifndef CONFIG_DM
#define CFG_SYS_NS16550_CLK (48000000)
#define CFG_SYS_NS16550_COM1 0x44e09000
#endif /* CONFIG_DM */
#define CFG_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */
/* Timer information */
#define CFG_SYS_TIMERBASE 0x48040000 /* Use Timer2 */
#include <asm/arch/omap.h>
/*
* SPL related defines. The Public RAM memory map the ROM defines the
* area between 0x402F0400 and 0x4030B800 as a download area and
* 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also
* supports X-MODEM loading via UART, and we leverage this and then use
* Y-MODEM to load u-boot.img, when booted over UART. We must also include
* the scratch space that U-Boot uses in SRAM.
*/
/*
* Since SPL did pll and ddr initialization for us,
* we don't need to do it twice.
*/
/*
* ----------------------------------------------------------------------------
* DDR information. We say (for simplicity) that we have 1 bank,
* always, even when we have more. We always start at 0x80000000,
* and we place the initial stack pointer in our SRAM.
*/
#define CFG_SYS_SDRAM_BASE 0x80000000
/*
* Our platforms make use of SPL to initalize the hardware (primarily
* memory) enough for full U-Boot to be loaded. We also support Falcon
* Mode so that the Linux kernel can be booted directly from SPL
* instead, if desired. We make use of the general SPL framework found
* under common/spl/. Given our generally common memory map, we set a
* number of related defaults and sizes here.
*/
/*
* Place the image at the start of the ROM defined image space.
* We limit our size to the ROM-defined downloaded image area, and use the
* rest of the space for stack. We load U-Boot itself into memory at
* 0x80800000 for legacy reasons (to not conflict with older SPLs). We
* have our BSS be placed 1MiB after this, to allow for the default
* Linux kernel address of 0x80008000 to work, in the Falcon Mode case.
* We have the SPL malloc pool at the end of the BSS area.
*
* ----------------------------------------------------------------------------
*/
/* General parts of the framework, required. */
#endif /* ! __BUR_AM335X_COMMON_H__ */
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