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udev: Create rules file to generate serial0/1

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Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
This commit is contained in:
Andrei Gherzan 2017-04-18 16:34:59 +01:00
parent 8a450f0a8a
commit 668446e283
2 changed files with 33 additions and 0 deletions
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12
recipes-core/udev/udev-rules-rpi.bb Normal file
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DESCRIPTION = "udev rules for Raspberry Pi Boards"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
SRC_URI = " file://99-com.rules"
S = "${WORKDIR}"
do_install () {
install -d ${D}${sysconfdir}/udev/rules.d
install -m 0644 ${WORKDIR}/99-com.rules ${D}${sysconfdir}/udev/rules.d/
}

21
recipes-core/udev/udev-rules-rpi/99-com.rules Normal file
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KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
ALIASES=/proc/device-tree/aliases; \
if cmp -s $ALIASES/uart0 $ALIASES/serial0; then \
echo 0;\
elif cmp -s $ALIASES/uart0 $ALIASES/serial1; then \
echo 1; \
else \
exit 1; \
fi\
'", SYMLINK+="serial%c"
KERNEL=="ttyS0", PROGRAM="/bin/sh -c '\
ALIASES=/proc/device-tree/aliases; \
if cmp -s $ALIASES/uart1 $ALIASES/serial0; then \
echo 0; \
elif cmp -s $ALIASES/uart1 $ALIASES/serial1; then \
echo 1; \
else \
exit 1; \
fi \
'", SYMLINK+="serial%c"