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https://github.com/AsahiLinux/u-boot
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bc959905df
The CONFIG_SPL_MAX_SIZE definition did not account for all areas that are used by the boot ROM according to the manual, causing boot failures due to truncated SPL images when actually hitting this limit. Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* SPL definitions for the i.MX7 SPL
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*
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* (C) Copyright 2017 CompuLab, Ltd. http://www.compulab.com
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*
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* Author: Uri Mashiach <uri.mashiach@compulab.co.il>
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*/
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#ifndef __IMX7_SPL_CONFIG_H
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#define __IMX7_SPL_CONFIG_H
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#ifdef CONFIG_SPL
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/*
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* see figure 6-22 in i.MX 7Dual/Solo Reference manuals:
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* - IMX7D/S OCRAM free area RAM (OCRAM) is from 0x00910000 to
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* 0x00946C00.
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* - Set the stack at the end of the free area section, at 0x00946BB8.
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* - The BOOT ROM loads what they consider the firmware image
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* which consists of a 4K header in front of us that contains the IVT, DCD
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* and some padding. However, the manual also states that the ROM uses the
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* OCRAM_EPCD and OCRAM_PXP areas for itself. While the SPL is free to use
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* this range for stack and malloc, the SPL itself must fit below 0x920000,
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* or the image will be truncated in at least some boot modes like USB SDP.
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* Thus our max size is really 0x00920000 - 0x00912000. If necessary,
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* CONFIG_SPL_TEXT_BASE could be moved to 0x00911000 to gain 4KB of space
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* for the SPL, but 56KB should be more than enough for the SPL.
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*/
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#define CONFIG_SPL_MAX_SIZE 0xE000
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#define CONFIG_SPL_STACK 0x00946BB8
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/*
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* Pad SPL to 68KB (4KB header + 56KB max size + 8KB extra padding)
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* The extra padding could be removed, but this value was used historically
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* based on an incorrect CONFIG_SPL_MAX_SIZE definition.
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* This allows to write the SPL/U-Boot combination generated with
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* u-boot-with-spl.imx directly to a boot media (given that boot media specific
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* offset is configured properly).
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*/
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#define CONFIG_SPL_PAD_TO 0x11000
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/* MMC support */
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#if defined(CONFIG_SPL_MMC)
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#define CONFIG_SYS_MONITOR_LEN 409600 /* 400 KB */
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#endif
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/* Define the payload for FAT/EXT support */
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#if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
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# ifdef CONFIG_OF_CONTROL
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# define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot-dtb.img"
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# else
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# define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img"
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# endif
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#endif
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#define CONFIG_SPL_BSS_START_ADDR 0x88200000
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#define CONFIG_SPL_BSS_MAX_SIZE 0x100000 /* 1 MB */
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#define CONFIG_SYS_SPL_MALLOC_START 0x88300000
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#define CONFIG_SYS_SPL_MALLOC_SIZE 0x100000 /* 1 MB */
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#endif /* CONFIG_SPL */
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#endif /* __IMX7_SPL_CONFIG_H */
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