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path: root/src/arch/arm64/transition.c
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2015-11-17arm64: tegra132: tegra210: Remove old arm64/stage_entry.SJulius Werner
This patch removes the old arm64/stage_entry.S code that was too specific to the Tegra SoC boot flow, and replaces it with code that hides the peculiarities of switching to a different CPU/arch in ramstage in the Tegra SoC directories. BRANCH=None BUG=None TEST=Built Ryu and Smaug. !!!UNTESTED!!! Change-Id: Ib3a0448b30ac9c7132581464573efd5e86e03698 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: http://review.coreboot.org/12078 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-10-31tree: drop last paragraph of GPL copyright headerPatrick Georgi
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-05-21Remove address from GPLv2 headersPatrick Georgi
As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-05-19arm64: Make SPSR exception masking on EL2 transition explicitJulius Werner
The configuration of SPSR bits that mask processor exceptions is kinda oddly hidden as an implict part of the transition() function right now. It would be odd but not impossible for programs to want to be entered with enabled exceptions, so let's move these bits to be explicitly set by the caller like the rest of SPSR instead. Also clear up some macro names. The SPSR[I] bit is currently defined as SPSR_IRQ_ENABLE, which is particularly unfortunate since that bit actually *disables* (masks) interrupts. The fact that there is an additional SPSR_IRQ_MASK definition with the same value but a different purpose doesn't really help. There's rarely a point to have all three of xxx_SHIFT, xxx_MASK and xxx_VALUE macros for single-bit fields, so simplify this to a single definition per bit. (Other macros in lib_helpers.h should probably also be overhauled to conform, but I want to wait and see how many of them really stay relevant after upcoming changes first.) BRANCH=None BUG=None TEST=None Change-Id: Id126f70d365467e43b7f493c341542247e5026d2 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 715600c83aef9794d1674e8c3b62469bdc57f297 Original-Change-Id: I3edc4ee276feb8610a636ec7b4175706505d58bd Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/270785 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/10250 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-03-28arm64: Add support for transition libraryFurquan Shaikh
Transition library provides the following functionalities: 1) Setup the environment for switching to any particular EL and jump to the loaded program at that EL. In short "Execute program X at exception level Y using the state Z" 2) Provides routines for exception entry and exception exit that can be used by any program to implement exception handling. The only routine required by the program would be exc_dispatch which handles the exception in its own required way and returns by making a call to exc_exit. On exc_exit, the transition library unwinds the whole stack by popping out the saved state of xregs BUG=chrome-os-partner:30785 BRANCH=None TEST=Compiles successfully and exceptions are tested for ramstage on ryu Change-Id: I8116556109665e61a53e4b3987d649e3cfed64a1 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 8ab888e8cae0c5f1e79b0e16ca292869f16f1cca Original-Change-Id: I90f664ac657258724dc0c79bd9f6ceef70064f90 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/216375 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9070 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>