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support new gpu_mem config.txt option for setting memory split

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This commit is contained in:
Alex Bradbury 2012-10-28 20:38:27 +00:00
parent ef2fc242f0
commit d65377afc7
1 changed files with 42 additions and 10 deletions
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52
raspi-config
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@ -91,6 +91,21 @@ EOF
mv "$3.bak" "$3"
}
get_config_var() {
lua - "$1" "$2" <<EOF
local key=assert(arg[1])
local fn=assert(arg[2])
local file=assert(io.open(fn))
for line in file:lines() do
local val = line:match("^#?%s*"..key.."=(.*)$")
if (val ~= nil) then
print(val)
break
end
end
EOF
}
# $1 is 0 to disable overscan, 1 to disable it
set_overscan() {
# Stop if /boot is not a mountpoint
@ -141,16 +156,33 @@ do_change_timezone() {
}
do_memory_split() {
get_current_memory_split
MEMSPLIT=$(whiptail --menu "Set memory split.\n$MEMSPLIT_DESCRIPTION" 20 60 10 \
"240" "240MiB for ARM, 16MiB for VideoCore" \
"224" "224MiB for ARM, 32MiB for VideoCore" \
"192" "192MiB for ARM, 64MiB for VideoCore" \
"128" "128MiB for ARM, 128MiB for VideoCore" \
3>&1 1>&2 2>&3)
if [ $? -eq 0 ]; then
set_memory_split ${MEMSPLIT}
ASK_TO_REBOOT=1
if [ -e /boot/start_cd.elf ]; then
# New-style memory split setting
if ! mountpoint -q /boot; then
return 1
fi
## get current memory split from /boot/config.txt
CUR_GPU_MEM=$(get_config_var gpu_mem /boot/config.txt)
[ -z "$CUR_GPU_MEM" ] && CUR_GPU_MEM=64
## ask users what gpu_mem they want
NEW_GPU_MEM=$(whiptail --inputbox "How much memory should the GPU have? e.g. 16/32/64/128/256" \
20 70 "$CUR_GPU_MEM" 3>&1 1>&2 2>&3)
if [ $? -eq 0 ]; then
set_config_var gpu_mem "$NEW_GPU_MEM" /boot/config.txt
ASK_TO_REBOOT=1
fi
else # Old firmware so do start.elf renaming
get_current_memory_split
MEMSPLIT=$(whiptail --menu "Set memory split.\n$MEMSPLIT_DESCRIPTION" 20 60 10 \
"240" "240MiB for ARM, 16MiB for VideoCore" \
"224" "224MiB for ARM, 32MiB for VideoCore" \
"192" "192MiB for ARM, 64MiB for VideoCore" \
"128" "128MiB for ARM, 128MiB for VideoCore" \
3>&1 1>&2 2>&3)
if [ $? -eq 0 ]; then
set_memory_split ${MEMSPLIT}
ASK_TO_REBOOT=1
fi
fi
}