u-boot/include/system-constants.h

/* SPDX-License-Identifier: GPL-2.0+ */

#ifndef __SYSTEM_CONSTANTS_H__
#define __SYSTEM_CONSTANTS_H__

/*
 * The most common case for our initial stack pointer address is to
 * say that we have defined a static intiial ram address location and
 * size and from that we subtract the generated global data size.
 */
#ifdef CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR
#define SYS_INIT_SP_ADDR	CONFIG_CUSTOM_SYS_INIT_SP_ADDR
#else
#ifdef CONFIG_MIPS
#define SYS_INIT_SP_ADDR	(CFG_SYS_SDRAM_BASE + CFG_SYS_INIT_SP_OFFSET)
#else
#define SYS_INIT_SP_ADDR	\
	(CFG_SYS_INIT_RAM_ADDR + CFG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
#endif
#endif

/*
 * Typically, we have the SPL malloc pool at the end of the BSS area.
 */
#ifdef CONFIG_SPL_HAS_CUSTOM_MALLOC_START
#define SPL_SYS_MALLOC_START		CONFIG_SPL_CUSTOM_SYS_MALLOC_ADDR
#elif defined(CONFIG_SPL_BSS_START_ADDR)
#define SPL_SYS_MALLOC_START		(CONFIG_SPL_BSS_START_ADDR + \
					 CONFIG_SPL_BSS_MAX_SIZE)
#else
/* feature not enabled: this value avoids compiler errors but is not used */
#define SPL_SYS_MALLOC_START	0
#endif
#define SPL_SYS_MALLOC_SIZE	\
	IF_ENABLED_INT(CONFIG_SPL_SYS_MALLOC, CONFIG_SPL_SYS_MALLOC_SIZE)

/* deal with an optional value */
#ifdef CONFIG_SPL_OS_BOOT
#define SPL_PAYLOAD_ARGS_ADDR	CONFIG_SPL_PAYLOAD_ARGS_ADDR
#else
#define SPL_PAYLOAD_ARGS_ADDR	0
#endif

#endif