Changes in Makefile

aca95fb6 - powerpc/microwatt: Add SMP support

Fri, 31 Jan 2025 06:30:09 +0000

powerpc/microwatt: Add SMP supportThis adds support for Microwatt systems with more than one core, andupdates the device tree for a 2-core version.The secondary CPUs are started and sent to spin in __secondary_holdvery early on, in the platform probe function. The reason for doingthis is so that they are there when smp_release_cpus() gets called,which is before the platform init_smp function or even the platformsetup_arch function gets called.Note that having two CPUs in the device tree doesn't precludeoperation with only one CPU. The SYSCON_CPU_CTRL register has aread-only field which indicates the number of CPU cores, somicrowatt_init_smp() will only start as many CPU cores as are presentin the system, and any extra CPU device-tree nodes will just beignored.Signed-off-by: Paul Mackerras Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/Z5xt8aooKyXZv6Kf@thinks.paulus.ozlabs.org List of files: /linux-6.15/arch/powerpc/platforms/microwatt/Makefile

c25769fd - powerpc/microwatt: Add support for hardware random number generator

Fri, 18 Jun 2021 03:47:08 +0000

powerpc/microwatt: Add support for hardware random number generatorMicrowatt's hardware RNG is accessed using the DARN instruction.Signed-off-by: Paul Mackerras Reviewed-by: Nicholas Piggin Reviewed-by: Segher Boessenkool Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/YMwXPHlV/ZleiQUY@thinks.paulus.ozlabs.org List of files: /linux-6.15/arch/powerpc/platforms/microwatt/Makefile

53d143fe - powerpc: Add Microwatt platform

Fri, 18 Jun 2021 03:43:41 +0000

powerpc: Add Microwatt platformMicrowatt is a FPGA-based implementation of the Power ISA. Itcurrently only implements little-endian 64-bit mode, and doesnot (yet) support SMP, VMX, VSX or transactional memory. It has anoptional FPU, and an optional MMU (required for running Linux,obviously) which implements a configurable radix tree but nothypervisor mode or nested radix translation.This adds a new machine type to support FPGA-based SoCs with aMicrowatt core. CONFIG_MATH_EMULATION can be selected for MicrowattSOCs which don't have the FPU.Signed-off-by: Paul Mackerras Reviewed-by: Nicholas Piggin Reviewed-by: Segher Boessenkool Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/YMwWbZVREsVug9R0@thinks.paulus.ozlabs.org List of files: /linux-6.15/arch/powerpc/platforms/microwatt/Makefile