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OpenCloudOS-Kernel/arch/powerpc/platforms/powernv/Kconfig

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powerpc: Add skeleton PowerNV platform This adds a skeletton for the new Power "Non Virtualized" platform which will be used by machines supporting running without an hypervisor, for example in order to run KVM. These machines will be using a new firmware called OPAL for which the support will be provided by later patches. The PowerNV platform is intended to be also usable under the BML environment used internally for early CPU bringup which is why the code also supports using RTAS instead of OPAL in various places. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-09-20 01:44:52 +08:00
config PPC_POWERNV
depends on PPC64 && PPC_BOOK3S
bool "IBM PowerNV (Non-Virtualized) platform support"
select PPC_NATIVE
select PPC_XICS
select PPC_ICP_NATIVE
select PPC_P7_NAP
select PPC_PCI_CHOICE if EMBEDDED
powerpc/powernv: Build a zImage.epapr The zImage.epapr wrapper allows to use zImages when booting via a flat device-tree which can be used on powernv. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-05-22 07:00:22 +08:00
select EPAPR_BOOT
powerpc/powernv: Add PIO accessors for Power8 LPC bus This uses the hooks provided by CONFIG_PPC_INDIRECT_PIO to implement a set of hooks for IO port access to use the LPC bus via OPAL calls for the first 64K of IO space Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-07-15 11:03:11 +08:00
select PPC_INDIRECT_PIO
powerpc/powernv: Enable detection of legacy UARTs Legacy UARTs can exist on PowerNV, memory-mapped ones on PCI or IO based ones on the LPC bus. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-07-15 11:03:15 +08:00
select PPC_UDBG_16550
powerpc/powernv: Add scom support under OPALv3 OPAL v3 provides interfaces to access the chips XSCOM, expose this via the existing scom infrastructure. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-08-29 14:57:33 +08:00
select PPC_SCOM
powerpc: Implement arch_get_random_long/int() for powernv Add the plumbing to implement arch_get_random_long/int(). It didn't seem worth adding an extra ppc_md hook for int, so we reuse the one for long. Add an implementation for powernv based on the hwrng found in power7+ systems. We whiten the output of the hwrng, and the result passes all the dieharder tests. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-10-11 11:07:57 +08:00
select ARCH_RANDOM
cpufreq: powernv: Select CPUFreq related Kconfig options for powernv Enable CPUFreq for PowerNV. Select "performance", "powersave", "userspace" and "ondemand" governors. Choose "ondemand" to be the default governor. Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-01 15:13:28 +08:00
select CPU_FREQ
select CPU_FREQ_GOV_PERFORMANCE
select CPU_FREQ_GOV_POWERSAVE
select CPU_FREQ_GOV_USERSPACE
select CPU_FREQ_GOV_ONDEMAND
select CPU_FREQ_GOV_CONSERVATIVE
powerpc/powernv: Enable POWER8 doorbell IPIs This patch enables POWER8 doorbell IPIs on powernv. Since doorbells can only IPI within a core, we test to see when we can use doorbells and if not we fall back to XICS. This also enables hypervisor doorbells to wakeup us up from nap/sleep via the LPCR PECEDH bit. Based on tests by Anton, the best case IPI latency between two threads dropped from 894ns to 512ns. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11 13:59:28 +08:00
select PPC_DOORBELL
powerpc: Add skeleton PowerNV platform This adds a skeletton for the new Power "Non Virtualized" platform which will be used by machines supporting running without an hypervisor, for example in order to run KVM. These machines will be using a new firmware called OPAL for which the support will be provided by later patches. The PowerNV platform is intended to be also usable under the BML environment used internally for early CPU bringup which is why the code also supports using RTAS instead of OPAL in various places. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-09-20 01:44:52 +08:00
default y
powerpc/powernv: Add opal-prd channel This change adds a char device to access the "PRD" (processor runtime diagnostics) channel to OPAL firmware. Includes contributions from Vaidyanathan Srinivasan, Neelesh Gupta & Vishal Kulkarni. Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Acked-by: Stewart Smith <stewart@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-06-04 21:51:47 +08:00
config OPAL_PRD
tristate 'OPAL PRD driver'
depends on PPC_POWERNV
help
This enables the opal-prd driver, a facility to run processor
recovery diagnostics on OpenPower machines