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Diffstat (limited to 'include/configs/iot_devkit.h')
| -rw-r--r-- | include/configs/iot_devkit.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/include/configs/iot_devkit.h b/include/configs/iot_devkit.h new file mode 100644 index 0000000000..4ffe1141d9 --- /dev/null +++ b/include/configs/iot_devkit.h @@ -0,0 +1,84 @@ +/* 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_SYS_INIT_SP_ADDR + * : + * Specified explicitly by CONFIG_SYS_SDRAM_BASE + * + * NOTES: + * - Stack starts from CONFIG_SYS_INIT_SP_ADDR and grows down, + * i.e. towards CONFIG_SYS_SDRAM_BASE but nothing stops it from crossing + * that CONFIG_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 CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE + +#define SRAM_BASE 0x30000000 +#define SRAM_SIZE SZ_128K + +#define DCCM_BASE 0x80000000 +#define DCCM_SIZE SZ_128K + +#define CONFIG_SYS_SDRAM_BASE DCCM_BASE +#define CONFIG_SYS_SDRAM_SIZE DCCM_SIZE + +#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + SZ_32K) + +#define CONFIG_SYS_MALLOC_LEN SZ_64K +#define CONFIG_SYS_BOOTM_LEN SZ_128K +#define CONFIG_SYS_LOAD_ADDR SRAM_BASE + +#define ROM_BASE CONFIG_SYS_MONITOR_BASE +#define ROM_SIZE SZ_256K + +#define RAM_DATA_BASE CONFIG_SYS_INIT_SP_ADDR +#define RAM_DATA_SIZE CONFIG_SYS_SDRAM_SIZE - \ + (CONFIG_SYS_INIT_SP_ADDR - \ + CONFIG_SYS_SDRAM_BASE) - \ + CONFIG_SYS_MALLOC_LEN - \ + CONFIG_ENV_SIZE + +/* Required by DW MMC driver */ +#define CONFIG_BOUNCE_BUFFER + +/* + * Environment + */ +#define CONFIG_ENV_SIZE SZ_4K +#define CONFIG_BOOTFILE "app.bin" +#define CONFIG_LOADADDR CONFIG_SYS_LOAD_ADDR + +#endif /* _CONFIG_IOT_DEVKIT_H_ */ |