aa6e94deab
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_SDRAM namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2018 Synopsys, Inc. All rights reserved.
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*/
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#ifndef _CONFIG_IOT_DEVKIT_H_
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#define _CONFIG_IOT_DEVKIT_H_
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#include <linux/sizes.h>
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/*
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* MEMORY MAP
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*
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* eFlash: 0x0000_0000 - 0x0008_0000 (512K)
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* ICCM: 0x2000_0000 - 0x2004_0000 (256K)
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* SRAM: 0x3000_0000 - 0x3002_0000 (128K)
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* DCCM: 0x8000_0000 - 0x8002_0000 (128K)
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* Note: only data goes here, as IFQ cannot fetch instructions from DCCM
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*
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*
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* RAM PARTITIONING
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*
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* +-----------+----------+---------------------+-------------+
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* | <-- Stack | .data | Malloc | Environment |
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* +-----------+----------+---------------------+-------------+
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* : : : :\___________/
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* : : : : |
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* : : : : CONFIG_ENV_SIZE
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* : : \____________________/
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* : : |
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* : : CONFIG_SYS_MALLOC_LEN
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* : :
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* : Specified explicitly by CONFIG_CUSTOM_SYS_INIT_SP_ADDR
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* :
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* Specified explicitly by CFG_SYS_SDRAM_BASE
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*
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* NOTES:
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* - Stack starts from CONFIG_CUSTOM_SYS_INIT_SP_ADDR and grows down,
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* i.e. towards CFG_SYS_SDRAM_BASE but nothing stops it from crossing
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* that CFG_SYS_SDRAM_BASE in which case data won't be really saved on
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* stack any longer and values popped from stack will contain garbage
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* leading to unexpected behavior, typically but not limited to:
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* - "Returning" back to bogus caller function
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* - Reading data from weird addresses
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*/
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#define SRAM_BASE 0x30000000
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#define SRAM_SIZE SZ_128K
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#define DCCM_BASE 0x80000000
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#define DCCM_SIZE SZ_128K
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#define CFG_SYS_SDRAM_BASE DCCM_BASE
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#define CFG_SYS_SDRAM_SIZE DCCM_SIZE
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#define ROM_BASE CONFIG_SYS_MONITOR_BASE
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#define ROM_SIZE SZ_256K
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#define RAM_DATA_BASE SYS_INIT_SP_ADDR
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#define RAM_DATA_SIZE CFG_SYS_SDRAM_SIZE - \
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(SYS_INIT_SP_ADDR - \
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CFG_SYS_SDRAM_BASE) - \
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CONFIG_SYS_MALLOC_LEN - \
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CONFIG_ENV_SIZE
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#endif /* _CONFIG_IOT_DEVKIT_H_ */
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