This is a small patch set for SMP support on Marvell Berlin BG2 and recently provided BG2Q. Nothing spectacular, as it basically copies SMP holding pen mechanism from mach-prima2 and plat-versatile with minor Berlin specific code for SCU and general purpose registers used by secondary CPUs to get their boot address. There was some IRC discussion with Alexandre about using scu_get_base() instead of a DT node. Although BG2Q is true A9 and provides SCU base; BG2 with PJ4b does not and I decided to depend on a DT node for SCU in both cases, which is fine I guess. I tested this on BG2, and BG2CD (which is UP). I expect the Free-Electrons guys to test on BG2Q. There is a branch based on v3.14-rc1 and latest BG2Q DTs for the lucky ones who are able to boot unsigned images at https://github.com/shesselba/linux-berlin.git topic/smp-bg2-bg2q Sebastian Sebastian Hesselbarth (2): ARM: berlin: add scu and chipctrl device nodes for BG2/BG2Q ARM: berlin: add SMP support arch/arm/boot/dts/berlin2.dtsi | 10 +++ arch/arm/boot/dts/berlin2q.dtsi | 10 +++ arch/arm/mach-berlin/Kconfig | 1 + arch/arm/mach-berlin/Makefile | 1 + arch/arm/mach-berlin/berlin.c | 3 + arch/arm/mach-berlin/common.h | 18 ++++++ arch/arm/mach-berlin/headsmp.S | 43 +++++++++++++ arch/arm/mach-berlin/platsmp.c | 139 ++++++++++++++++++++++++++++++++++++++++ 8 files changed, 225 insertions(+) create mode 100644 arch/arm/mach-berlin/common.h create mode 100644 arch/arm/mach-berlin/headsmp.S create mode 100644 arch/arm/mach-berlin/platsmp.c --- Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Pawel Moll <pawel.moll@xxxxxxx> Cc: Mark Rutland <mark.rutland@xxxxxxx> Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx> Cc: Kumar Gala <galak@xxxxxxxxxxxxxx> Cc: Russell King <linux@xxxxxxxxxxxxxxxx> Cc: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx> Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx> Cc: devicetree@xxxxxxxxxxxxxxx Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
