The FVP specific code that gets called after a cpu has been physically
powered on after having been turned off or suspended earlier does not
clear the PWRC.PWKUPR.WEN bit. Not doing so causes problems if: a cpu
is suspended, woken from suspend, powered down through a cpu_off call
& receives a spurious interrupt. Since the WEN bit is not cleared
after the cpu woke up from suspend, the spurious wakeup will power the
cpu on. Since the cpu_off call clears the jump address in the mailbox
this spurious wakeup will cause the cpu to crash.
This patch fixes this issue by clearing the WEN bit whenever a cpu is
powered up.
Change-Id: Ic91f5dffe1ed01d76bc7fc807acf0ecd3e38ce5b
- Add instructions for contributing to ARM Trusted Firmware.
- Update copyright text in all files to acknowledge contributors.
Change-Id: I9311aac81b00c6c167d2f8c889aea403b84450e5
This patch updates the user guide section about the memory layout.
- Explain the verifications that the linker scripts does on the
global memory layout.
- Refer to the new linker symbols.
- Describe the linker symbols exported to the trusted firmware code.
Change-Id: I033ab2b867e8b9776deb4185b9986bcb8218f286
A single binary can be compiled using a command such as:
make CROSS_COMPILE=aarch64-none-elf- bl1
Also make use of brackets consistent in the Makefile.
Change-Id: I2180fdb473411ef7cffe39670a7b2de82def812e
- Large RAM-disks may have trouble starting with 2GB of memory.
- Increase from 2GB to 4GB in FDT.
Change-Id: I12c1b8e5db41114b88c69c48621cb21247a6a6a7
Any asynchronous exception caused by the firmware should be handled
in the firmware itself. For this reason, unmask SError exceptions
(and Debug ones as well) on all boot paths. Also route external
abort and SError interrupts to EL3, otherwise they will target EL1.
Change-Id: I9c191d2d0dcfef85f265641c8460dfbb4d112092
Global and static variables are expected to be initialised to zero
by default. This is specified by the C99 standard. This patch
removes some unnecessary initialisations of such variables.
It fixes a compilation warning at the same time:
plat/fvp/bl31_plat_setup.c:82:3: warning: missing braces around
initializer [-Wmissing-braces]
section("tzfw_coherent_mem"))) = {0};
^
plat/fvp/bl31_plat_setup.c:82:3: warning: (near initialization for
‘ns_entry_info[0]’) [-Wmissing-braces]
Note that GCC should not have emitted this warning message in the
first place. The C Standard permits braces to be elided around
subaggregate initializers. See this GCC bug report:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119
Change-Id: I13cb0c344feb9803bca8819f976377741fa6bc35