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2015-04-02arm: Prevent compilation of old, experimental SMP supportJulius Werner
The ARM SMP feature was added a long time ago and has never really been used by anyone since. We are still always compiling cpu_info() even though we don't use it, and it makes some dangerous assumptions about stack alignment that are not guaranteed anywhere. I'm planning to change the way the stack boundaries are defined. Rather than trying to work that into this unsafe, unused and hard to test feature, I think we should just seal it off with police tape and make sure that if anyone ever tries to use it again (which currently seems unlikely), they get forced to do their due diligence on making sure it works as intended. BUG=None TEST=Compiled Veyron_Pinky. Change-Id: Id25545cab88f29200c7672ef02c7804f0ac26399 Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Original-Commit-Id: 5b517fc46b030a6e50ef2f5e4d4a449b98ce16c6 Original-Change-Id: I8a60bd30e8b27a22bb3da68ca84daea99424dee9 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/219680 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/9222 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2014-09-08ARM: Generalize armv7 as arm.Gabe Black
There are ARM systems which are essentially heterogeneous multicores where some cores implement a different ARM architecture version than other cores. A specific example is the tegra124 which boots on an ARMv4 coprocessor while most code, including most of the firmware, runs on the main ARMv7 core. To support SOCs like this, the plan is to generalize the ARM architecture so that all versions are available, and an SOC/CPU can then select what architecture variant should be used for each component of the firmware; bootblock, romstage, and ramstage. Old-Change-Id: I22e048c3bc72bd56371e14200942e436c1e312c2 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/171338 Reviewed-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 8423a41529da0ff67fb9873be1e2beb30b09ae2d) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> ARM: Split out ARMv7 code and make it possible to have other arch versions. We don't always want to use ARMv7 code when building for ARM, so we should separate out the ARMv7 code so it can be excluded, and also make it possible to include code for some other version of the architecture instead, all per build component for cases where we need more than one architecture version at a time. The tegra124 bootblock will ultimately need to be ARMv4, but until we have some ARMv4 code to switch over to we can leave it set to ARMv7. Old-Change-Id: Ia982c91057fac9c252397b7c866224f103761cc7 Reviewed-on: https://chromium-review.googlesource.com/171400 Reviewed-by: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 799514e6060aa97acdcf081b5c48f965be134483) Squashed two related patches for splitting ARM support into general ARM support and ARMv7 specific pieces. Change-Id: Ic6511507953a2223c87c55f90252c4a4e1dd6010 Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6782 Tested-by: build bot (Jenkins)