| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (C) 2018 Synopsys, Inc. All rights reserved. |
| */ |
| |
| #ifndef _CONFIG_IOT_DEVKIT_H_ |
| #define _CONFIG_IOT_DEVKIT_H_ |
| |
| #include <linux/sizes.h> |
| |
| /* |
| * MEMORY MAP |
| * |
| * eFlash: 0x0000_0000 - 0x0008_0000 (512K) |
| * ICCM: 0x2000_0000 - 0x2004_0000 (256K) |
| * SRAM: 0x3000_0000 - 0x3002_0000 (128K) |
| * DCCM: 0x8000_0000 - 0x8002_0000 (128K) |
| * Note: only data goes here, as IFQ cannot fetch instructions from DCCM |
| * |
| * |
| * RAM PARTITIONING |
| * |
| * +-----------+----------+---------------------+-------------+ |
| * | <-- Stack | .data | Malloc | Environment | |
| * +-----------+----------+---------------------+-------------+ |
| * : : : :\___________/ |
| * : : : : | |
| * : : : : CONFIG_ENV_SIZE |
| * : : \____________________/ |
| * : : | |
| * : : CONFIG_SYS_MALLOC_LEN |
| * : : |
| * : Specified explicitly by CONFIG_CUSTOM_SYS_INIT_SP_ADDR |
| * : |
| * Specified explicitly by CFG_SYS_SDRAM_BASE |
| * |
| * NOTES: |
| * - Stack starts from CONFIG_CUSTOM_SYS_INIT_SP_ADDR and grows down, |
| * i.e. towards CFG_SYS_SDRAM_BASE but nothing stops it from crossing |
| * that CFG_SYS_SDRAM_BASE in which case data won't be really saved on |
| * stack any longer and values popped from stack will contain garbage |
| * leading to unexpected behavior, typically but not limited to: |
| * - "Returning" back to bogus caller function |
| * - Reading data from weird addresses |
| */ |
| |
| #define SRAM_BASE 0x30000000 |
| #define SRAM_SIZE SZ_128K |
| |
| #define DCCM_BASE 0x80000000 |
| #define DCCM_SIZE SZ_128K |
| |
| #define CFG_SYS_SDRAM_BASE DCCM_BASE |
| #define CFG_SYS_SDRAM_SIZE DCCM_SIZE |
| |
| #define ROM_BASE CONFIG_SYS_MONITOR_BASE |
| #define ROM_SIZE SZ_256K |
| |
| #define RAM_DATA_BASE SYS_INIT_SP_ADDR |
| #define RAM_DATA_SIZE CFG_SYS_SDRAM_SIZE - \ |
| (SYS_INIT_SP_ADDR - \ |
| CFG_SYS_SDRAM_BASE) - \ |
| CONFIG_SYS_MALLOC_LEN - \ |
| CONFIG_ENV_SIZE |
| #endif /* _CONFIG_IOT_DEVKIT_H_ */ |
