0ce3963a62
According to current "include/configs/sunxi-common.h" U-Boot environment is stored on SD-card with offset 544 kB and its size is limited as 128 kB. Given memory layout of sunxi boards: 1. SPL 2. U-Boot 3. U-Boot environment 4. Partitions (see http://linux-sunxi.org/Bootable_SD_card#SD_Card_Layout for details) we need to make sure the first real partition starts at least with 544+128 kB offset. Adding a small safety gap let's put the first partition with offset 1MB from the beginning of SD-card. Otherwise current setup gets broken as soon as one saves U-Boot environment with "saveenv" which basically overwrites FAT partition with zImage and board no longer boots into Linux kernel. [Peter: extend description, add padding to u-boot partition instead] Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Erico Nunes <nunes.erico@gmail.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Peter Korsgaard <peter@korsgaard.com> Cc: Carlos Quijano <carlos@crqgestion.es> Cc: Andi Shyti <andi@etezian.org> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
38 lines
546 B
INI
38 lines
546 B
INI
# Minimal SD card image for the Cubieboard2
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# Based in the Orange Pi genimage.cfg
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image boot.vfat {
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vfat {
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files = {
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"zImage",
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"sun7i-a20-cubieboard2.dtb",
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"boot.scr"
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}
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}
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size = 10M
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}
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image sdcard.img {
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hdimage {
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}
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partition u-boot {
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in-partition-table = "no"
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image = "u-boot-sunxi-with-spl.bin"
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offset = 8192
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size = 1040384 # 1MB - 8192
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}
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partition boot {
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partition-type = 0xC
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bootable = "true"
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image = "boot.vfat"
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}
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partition rootfs {
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partition-type = 0x83
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image = "rootfs.ext4"
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size = 512M
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}
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}
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