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2015-03-09Add and consistently use wrapper macro for romstage static variablesJulius Werner
x86 systems run their romstage as execute-in-place from flash, which prevents them from having writable data segments. In several code pieces that get linked into both romstage and ramstage, this has been worked around by using a local variable and having the 'static' storage class guarded by #ifndef __PRE_RAM__. However, x86 is the only architecture using execute-in-place (for now), so it does not make sense to impose the restriction globally. Rather than fixing the #ifdef at every occurrence, this should really be wrapped in a way that makes it easier to modify in a single place. The chromeos/cros_vpd.c file already had a nice approach for a wrapper macro, but unfortunately restricted it to one file... this patch moves it to stddef.h and employs it consistently throughout coreboot. BRANCH=nyan BUG=None TEST=Measured boot time on Nyan_Big before and after, confirmed that it gained 6ms from caching the FMAP in vboot_loader.c. Original-Change-Id: Ia53b94ab9c6a303b979db7ff20b79e14bc51f9f8 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/203033 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit c8127e4ac9811517f6147cf019ba6a948cdaa4a5) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I44dacc10214351992b775aca52d6b776a74ee922 Reviewed-on: http://review.coreboot.org/8055 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2015-01-14Move container_of() macro to stddef.hStefan Reinauer
It's not a SPI related macro, hence move it to stddef.h where other similar macros live. Change-Id: I1008894af7a272f1bc36d3ae6cee3881132b6ba9 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/8109 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2014-09-22Add check_member macro to allow clean and easy struct offset checkingJulius Werner
This patch adds a new static assertion macro that can be used to check the offsets in structures that overlay register sets at compile time. It uses the _Static_assert() declaration from the new ISO C11 standard, which is supported (even without -std=c11) by GCC after version 4.6. (There is supposedly also support in clang, although I haven't tried it... let's deal with compiler issues when/if they turn up.) I've added it to all structures for our current ARM SoCs for now, and I think every new register overlay we add going forward should use them (at least for the last member, but feel free to add more if you think it's useful). Change-Id: If32510e7049739ad05618d363a854dc372d64386 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/179412 Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit cef5fa13c31375a316ca4556c0039b17c8ea7900) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6905 Tested-by: build bot (Jenkins)
2013-11-25Make ssize_t an actual ssize_tStefan Reinauer
In the process of getting rid of compiler includes during in coreboot and libpayload, we defined size_t and ssize_t ourselves, using a GCC macro for size_t: __SIZE_TYPE__. Unfortunately, there is no __SSIZE_TYPE__, so we temporarily redefine unsigned to signed to make __SIZE_TYPE__ __SSIZE_TYPE__. Signed-off-by: Stefan Reinauer <reinauer@google.com> Change-Id: I4cf4eb0fdaa4db64277c2585fe2c1bdc0acdf02b Reviewed-on: https://gerrit.chromium.org/gerrit/49947 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Commit-Queue: Stefan Reinauer <reinauer@google.com> Tested-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/4156 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-03-16stddef.h: Add standard defines for KiB, MiB, GiB, and TiBRonald G. Minnich
Paul points out that some people like 1024*1024, others like 1048576, but in any case these are all open to typos. Define KiB, MiB, GiB, and TiB as in the standard so people can use them. Change-Id: Ic1b57e70d3e9b9e1c0242299741f71db91e7cd3f Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2769 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins)
2012-12-08stddef.h: move to generic codeStefan Reinauer
stddef.h should be fairly generic across all platforms we'd want to support, so let's move it to generic code. Change-Id: I580c9c9b54f62fadd9ea97115933e16ea0b13ada Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2007 Tested-by: build bot (Jenkins)