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gemini: Add swap partition to DNS-313

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Sometimes when using the DNS-313 memory usage can peak and
with a simple swap partition we can avoid running into the
roof and invoking the OOM killer. Set this partition to
128MB (twice the size of the memory of the DNS-313).

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2020-07-17 17:01:00 +02:00 committed by Christian Lamparter
parent caa6ada969
commit 9e02580d52
1 changed files with 13 additions and 7 deletions
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20
target/linux/gemini/image/dns313_gen_hdd_img.sh
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@ -15,14 +15,20 @@ ROOTFSSIZE="$5"
head=4
sect=63
# Create two empty partitions followed by the boot partition with
# the ./boot/zImage and then the rootfs partition.
set $(ptgen -o $OUTPUT -h $head -s $sect -t 83 -n -p 0 -p 0 -p ${BOOTFSSIZE}M -p ${ROOTFSSIZE}M)
# Create one empty partitions followed by the swap partition, then the
# boot partition with the ./boot/zImage and then the rootfs partition.
# The swap partition with type 82 is 128 MB since the DNS-313 has 64 MB of
# memory so we assign twice of that as swap.
# The boot partition must always be the third partition.
# The user should use the first (blank) partition for user data storage,
# this will typically be named /dev/sda1
set $(ptgen -o $OUTPUT -h $head -s $sect -n -t 83 -p 0 -t 82 -p 128M -t 83 -p ${BOOTFSSIZE}M -t 83 -p ${ROOTFSSIZE}M)
BOOTOFFSET="$(($1 / 512))"
BOOTSIZE="$(($2 / 512))"
ROOTFSOFFSET="$(($3 / 512))"
ROOTFSSIZE="$(($4 / 512))"
# Swapoffset and swapsize will be $1 and $2
BOOTOFFSET="$(($3 / 512))"
BOOTSIZE="$(($4 / 512))"
ROOTFSOFFSET="$(($5 / 512))"
ROOTFSSIZE="$(($6 / 512))"
dd bs=512 if="$BOOTFS" of="$OUTPUT" seek="$BOOTOFFSET" conv=notrunc
dd bs=512 if="$ROOTFS" of="$OUTPUT" seek="$ROOTFSOFFSET" conv=notrunc