Tobias Klauser 1c47303355 nios2: reserve boot memory for device tree ... commit 921d701e6f31e1ffaca3560416af1aa04edb4c4f upstream. Make sure to reserve the boot memory for the flattened device tree. Otherwise it might get overwritten, e.g. when initial_boot_params is copied, leading to a corrupted FDT and a boot hang/crash: bootconsole [early0] enabled Early console on uart16650 initialized at 0xf8001600 OF: fdt: Error -11 processing FDT Kernel panic - not syncing: setup_cpuinfo: No CPU found in devicetree! ---[ end Kernel panic - not syncing: setup_cpuinfo: No CPU found in devicetree! Guenter Roeck says: > I think I found the problem. In unflatten_and_copy_device_tree(), with added > debug information: > > OF: fdt: initial_boot_params=c861e400, dt=c861f000 size=28874 (0x70ca) > > ... and then initial_boot_params is copied to dt, which results in corrupted > fdt since the memory overlaps. Looks like the initial_boot_params memory > is not reserved and (re-)allocated by early_init_dt_alloc_memory_arch(). Reported-by: Guenter Roeck <linux@roeck-us.net> Reference: http://lkml.kernel.org/r/20170226210338.GA19476@roeck-us.net Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-04-12 12:38:34 +02:00
..
boot
configs
include	nios2: copy_from_user() should zero the tail of destination	2016-09-24 10:07:45 +02:00
kernel	nios2: reserve boot memory for device tree	2017-04-12 12:38:34 +02:00
lib	nios2: Remove unnecessary #ifdef guards	2015-11-09 10:33:30 +08:00
mm	nios2: fix cache coherency	2015-11-26 22:25:58 +08:00
platform
Kconfig
Kconfig.debug
Makefile