#!/bin/bash
#exit status
#1: run as non-root user
#2: sysfs/debugfs not mount
#3: insert module fail when gpio-mockup is a module.
#4: other reason.
SYSFS=
GPIO_SYSFS=
GPIO_DRV_SYSFS=
DEBUGFS=
GPIO_DEBUGFS=
dev_type=
module=
usage()
{
echo "Usage:"
echo "$0 [-f] [-m name] [-t type]"
echo "-f: full test. It maybe conflict with existence gpio device."
echo "-m: module name, default name is gpio-mockup. It could also test"
echo " other gpio device."
echo "-t: interface type: chardev(char device) and sysfs(being"
echo " deprecated). The first one is default"
echo ""
echo "$0 -h"
echo "This usage"
}
prerequisite()
{
msg="skip all tests:"
if [ $UID != 0 ]; then
echo $msg must be run as root >&2
exit 1
fi
SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
if [ ! -d "$SYSFS" ]; then
echo $msg sysfs is not mounted >&2
exit 2
fi
GPIO_SYSFS=`echo $SYSFS/class/gpio`
GPIO_DRV_SYSFS=`echo $SYSFS/devices/platform/$module/gpio`
DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
if [ ! -d "$DEBUGFS" ]; then
echo $msg debugfs is not mounted >&2
exit 2
fi
GPIO_DEBUGFS=`echo $DEBUGFS/gpio`
source gpio-mockup-sysfs.sh
}
try_insert_module()
{
if [ -d "$GPIO_DRV_SYSFS" ]; then
echo "$GPIO_DRV_SYSFS exist. Skip insert module"
else
modprobe -q $module $1
if [ X$? != X0 ]; then
echo $msg insmod $module failed >&2
exit 3
fi
fi
}
remove_module()
{
modprobe -r -q $module
}
die()
{
remove_module
exit 4
}
test_chips()
{
if [ X$dev_type = Xsysfs ]; then
echo "WARNING: sysfs ABI of gpio is going to deprecated."
test_chips_sysfs $*
else
$BASE/gpio-mockup-chardev $*
fi
}
gpio_test()
{
param=$1
valid=$2
if [ X"$param" = X ]; then
die
fi
try_insert_module "gpio_mockup_ranges=$param"
echo -n "GPIO $module test with ranges: <"
echo "$param>: "
printf "%-10s %s\n" $param
test_chips $module $valid
remove_module
}
BASE=`dirname $0`
dev_type=
TEMP=`getopt -o fhm:t: -n '$0' -- "$@"`
if [ "$?" != "0" ]; then
echo "Parameter process failed, Terminating..." >&2
exit 1
fi
# Note the quotes around `$TEMP': they are essential!
eval set -- "$TEMP"
while true; do
case $1 in
-f)
full_test=true
shift
;;
-h)
usage
exit
;;
-m)
module=$2
shift 2
;;
-t)
dev_type=$2
shift 2
;;
--)
shift
break
;;
*)
echo "Internal error!"
exit 1
;;
esac
done
if [ X"$module" = X ]; then
module="gpio-mockup"
fi
if [ X$dev_type != Xsysfs ]; then
dev_type="chardev"
fi
prerequisite
echo "1. Test dynamic allocation of gpio successful means insert gpiochip and"
echo " manipulate gpio pin successful"
gpio_test "-1,32" true
gpio_test "-1,32,-1,32" true
gpio_test "-1,32,-1,32,-1,32" true
if [ X$full_test = Xtrue ]; then
gpio_test "-1,32,32,64" true
gpio_test "-1,32,40,64,-1,5" true
gpio_test "-1,32,32,64,-1,32" true
gpio_test "0,32,32,64,-1,32,-1,32" true
gpio_test "-1,32,-1,32,0,32,32,64" true
echo "2. Do basic test: successful means insert gpiochip and"
echo " manipulate gpio pin successful"
gpio_test "0,32" true
gpio_test "0,32,32,64" true
gpio_test "0,32,40,64,64,96" true
fi
echo "3. Error test: successful means insert gpiochip failed"
echo "3.1 Test number of gpio overflow"
#Currently: The max number of gpio(1024) is defined in arm architecture.
gpio_test "-1,32,-1,1024" false
if [ X$full_test = Xtrue ]; then
echo "3.2 Test zero line of gpio"
gpio_test "0,0" false
echo "3.3 Test range overlap"
echo "3.3.1 Test corner case"
gpio_test "0,32,0,1" false
gpio_test "0,32,32,64,32,40" false
gpio_test "0,32,35,64,35,45" false
gpio_test "0,32,31,32" false
gpio_test "0,32,32,64,36,37" false
gpio_test "0,32,35,64,34,36" false
echo "3.3.2 Test inserting invalid second gpiochip"
gpio_test "0,32,30,35" false
gpio_test "0,32,1,5" false
gpio_test "10,32,9,14" false
gpio_test "10,32,30,35" false
echo "3.3.3 Test others"
gpio_test "0,32,40,56,39,45" false
gpio_test "0,32,40,56,30,33" false
gpio_test "0,32,40,56,30,41" false
gpio_test "0,32,40,56,20,21" false
fi
echo GPIO test PASS
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(),
after which unaligned accesses to RAM are no longer supported.
Commit:
abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")
fixed an issue in the memory map handling of the stub FDT code, but
inadvertently created an issue with such firmware, by moving some
of the FDT manipulation to after the invocation of ExitBootServices().
Given that the stub's libfdt implementation uses the ordinary, accelerated
string functions, which rely on hardware handling of unaligned accesses,
manipulating the FDT with the MMU off may result in alignment faults.
So fix the situation by moving the update_fdt_memmap() call into the
callback function invoked by efi_exit_boot_services() right before it
calls the ExitBootServices() UEFI service (which is arguably a better
place for it anyway)
Note that disabling the MMU in ExitBootServices() is not compliant with
the UEFI spec, and carries great risk due to the fact that switching from
cached to uncached memory accesses halfway through compiler generated code
(i.e., involving a stack) can never be done in a way that is architecturally
safe.
Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Riku Voipio <riku.voipio@linaro.org>
Cc: <stable@vger.kernel.org>
Cc: mark.rutland@arm.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: leif.lindholm@linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/util/genelf_debug.c')