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2015-05-18drivers/gic: reprogram the GIC CPU interface to bypass IRQJoseph Lo
GICv2 provides a wake IRQ/FIQ (for wake-event purpose), which are not disabled by GIC CPU interface. This is done by adding a bypass override capability when the interrupts are disabled at the CPU interface. To support this, there are four bits about IRQ/FIQ BypassDisable in CPU interface Control Register. So the CPU can exit from WFI when an asserted IRQ is coming. This is critical for power gating a CPU. BRANCH=none BUG=chrome-os-partner:39620 TEST=testing with CPU idle with power down state support and CPU can wake up normally Change-Id: I71ac642e28024a562db898665b74a5791fce325a Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 3a3f098cbf3fbfdab8150ebd4fd688fdb472b529 Original-Change-Id: I20569a18f34a4b11b8c8c67ea255b3d0f021839f Original-Signed-off-by: Joseph Lo <josephl@nvidia.com> Original-Reviewed-on: https://chromium-review.googlesource.com/269116 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/10172 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-22armv8/secmon: Disable and Enable GIC in PSCI pathFurquan Shaikh
Disable and enable GIC before switching off a CPU and after bringing it up back respectively. BUG=None BRANCH=None TEST=Compiles successfully and psci commands work for ryu. Change-Id: Ib43af60e994e3d072e897a59595775d0b2dcef83 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: d5271d731f0a569583c2b32ef6726dadbfa846d3 Original-Change-Id: I672945fcb0ff416008a1aad5ed625cfa91bb9cbd Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/265623 Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org> Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9926 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2015-04-21arm(64): Globally replace writel(v, a) with write32(a, v)Julius Werner
This patch is a raw application of the following spatch to src/: @@ expression A, V; @@ - writel(V, A) + write32(A, V) @@ expression A, V; @@ - writew(V, A) + write16(A, V) @@ expression A, V; @@ - writeb(V, A) + write8(A, V) @@ expression A; @@ - readl(A) + read32(A) @@ expression A; @@ - readb(A) + read8(A) BRANCH=none BUG=chromium:444723 TEST=None (depends on next patch) Change-Id: I5dd96490c85ee2bcbc669f08bc6fff0ecc0f9e27 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 64f643da95d85954c4d4ea91c34a5c69b9b08eb6 Original-Change-Id: I366a2eb5b3a0df2279ebcce572fe814894791c42 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/254864 Reviewed-on: http://review.coreboot.org/9836 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-21arm(64): Replace write32() and friends with writel()Julius Werner
This patch is a raw application of the following spatch to the directories src/arch/arm(64)?, src/mainboard/<arm(64)-board>, src/soc/<arm(64)-soc> and src/drivers/gic: @@ expression A, V; @@ - write32(V, A) + writel(V, A) @@ expression A, V; @@ - write16(V, A) + writew(V, A) @@ expression A, V; @@ - write8(V, A) + writeb(V, A) This replaces all uses of write{32,16,8}() with write{l,w,b}() which is currently equivalent and much more common. This is a preparatory step that will allow us to easier flip them all at once to the new write32(a,v) model. BRANCH=none BUG=chromium:451388 TEST=Compiled Cosmos, Daisy, Blaze, Pit, Ryu, Storm and Pinky. Change-Id: I16016cd77780e7cadbabe7d8aa7ab465b95b8f09 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 93f0ada19b429b4e30d67335b4e61d0f43597b24 Original-Change-Id: I1ac01c67efef4656607663253ed298ff4d0ef89d Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/254862 Reviewed-on: http://review.coreboot.org/9834 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-03-28drivers: add GIC supportAaron Durbin
The GIC is ARM's "Generic Interrupt Controller". This change essentially implements the rudimentary support for a GICv2 implementation that routes all interrupts to Group1. This should also work for GICv1 with security extensions. BUG=chrome-os-partner:31945 BRANCH=None TEST=Built and booted kernel using the code. Change-Id: I9c9202c1309ca9e711e00d742085a6728552c54b Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: d1cd9b6b76035af107b7dc876f90777698162d34 Original-Change-Id: I4c5b84bfe888ac33fa01c8d64a3dffe1b5ddc823 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/217512 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9075 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
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