1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * SPL definitions for the i.MX7 SPL 4 * 5 * (C) Copyright 2017 CompuLab, Ltd. http://www.compulab.com 6 * 7 * Author: Uri Mashiach <uri.mashiach@compulab.co.il> 8 */ 9 10 #ifndef __IMX7_SPL_CONFIG_H 11 #define __IMX7_SPL_CONFIG_H 12 13 #ifdef CONFIG_SPL 14 /* 15 * see figure 6-22 in i.MX 7Dual/Solo Reference manuals: 16 * - IMX7D/S OCRAM free area RAM (OCRAM) is from 0x00910000 to 17 * 0x00946C00. 18 * - Set the stack at the end of the free area section, at 0x00946BB8. 19 * - The BOOT ROM loads what they consider the firmware image 20 * which consists of a 4K header in front of us that contains the IVT, DCD 21 * and some padding. However, the manual also states that the ROM uses the 22 * OCRAM_EPCD and OCRAM_PXP areas for itself. While the SPL is free to use 23 * this range for stack and malloc, the SPL itself must fit below 0x920000, 24 * or the image will be truncated in at least some boot modes like USB SDP. 25 * Thus our max size is really 0x00920000 - 0x00912000. If necessary, 26 * CONFIG_SPL_TEXT_BASE could be moved to 0x00911000 to gain 4KB of space 27 * for the SPL, but 56KB should be more than enough for the SPL. 28 */ 29 #define CONFIG_SPL_MAX_SIZE 0xE000 30 #define CONFIG_SPL_STACK 0x00946BB8 31 /* 32 * Pad SPL to 68KB (4KB header + 56KB max size + 8KB extra padding) 33 * The extra padding could be removed, but this value was used historically 34 * based on an incorrect CONFIG_SPL_MAX_SIZE definition. 35 * This allows to write the SPL/U-Boot combination generated with 36 * u-boot-with-spl.imx directly to a boot media (given that boot media specific 37 * offset is configured properly). 38 */ 39 #define CONFIG_SPL_PAD_TO 0x11000 40 41 /* MMC support */ 42 #if defined(CONFIG_SPL_MMC) 43 #define CONFIG_SYS_MONITOR_LEN 409600 /* 400 KB */ 44 #endif 45 46 /* Define the payload for FAT/EXT support */ 47 #if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4) 48 # ifdef CONFIG_OF_CONTROL 49 # define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot-dtb.img" 50 # else 51 # define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img" 52 # endif 53 #endif 54 55 #define CONFIG_SPL_BSS_START_ADDR 0x88200000 56 #define CONFIG_SPL_BSS_MAX_SIZE 0x100000 /* 1 MB */ 57 #define CONFIG_SYS_SPL_MALLOC_START 0x88300000 58 #define CONFIG_SYS_SPL_MALLOC_SIZE 0x100000 /* 1 MB */ 59 60 #endif /* CONFIG_SPL */ 61 62 #endif /* __IMX7_SPL_CONFIG_H */ 63