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authorJulius Werner <jwerner@chromium.org>2016-05-16 15:39:12 -0700
committerJulius Werner <jwerner@chromium.org>2016-10-17 22:43:37 +0200
commit4fda9bd0ec15d5d2cbc647811b46c0a23fdb865e (patch)
treee64c3703fe4248662976a3befd6fa62c409a9b84 /payloads/libpayload/Kconfig
parent9ac7a66f0e044a384069b02779201ed46c3c58bd (diff)
downloadcoreboot-4fda9bd0ec15d5d2cbc647811b46c0a23fdb865e.tar.xz
libpayload: Replace majority of timer drivers with a generic one
Currently every non-x86 platform supported by libpayload needs to provide its own timer driver. Most of the ones we have accumulated there look almost identical: For the frequency, return a preset constant. For the value, read a 32-bit register, possibly read another 32-bit register and shift+OR it with the previous one, then return that. Let's replace this with a single .c file that can easily handle all of those cases. Menuconfig convenience can still be maintained by providing several presets that select different defaults for the driver's configuration options (register address(es) and frequency). Removes an "enabled" check from Samsung MCT driver since coreboot always unconditionally enables that timer anyway. CQ-DEPEND=CL:344809 BRANCH=None BUG=None TEST=Booted Oak and Veyron, observed how dev-mode delay was still ~30s Change-Id: I61cb7d2ffd4902aa841c57f9afa9cd991f770acd Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Commit-Id: a036af6 Original-Change-Id: I9784e7c6aa5abd6d92478ea7ec1cf42c9a437546 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/347749 Reviewed-on: https://review.coreboot.org/17023 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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