linux-dev/arch/powerpc/platforms/microwatt/setup.c, branch linus/masterLinux kernel development work - see feature brancheshttps://git.zx2c4.com/linux-dev/atom/arch/powerpc/platforms/microwatt/setup.c?h=linus%2Fmaster2021-06-21T11:16:31Zpowerpc/microwatt: Use standard 16550 UART for console2021-06-21T11:16:31ZBenjamin Herrenschmidtbenh@kernel.crashing.org2021-06-18T03:46:32Zurn:sha1:48b545b8018db61ab4978d29c73c16b9fbfad12c
This adds support to the Microwatt platform to use the standard
16550-style UART which available in the standalone Microwatt FPGA.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/YMwXGCTzedpQje7r@thinks.paulus.ozlabs.org
powerpc/xics: Add a native ICS backend for microwatt2021-06-21T11:15:58ZBenjamin Herrenschmidtbenh@kernel.crashing.org2021-06-18T03:45:53Zurn:sha1:aa9c5adf2f61da39c92280d9336e091852e292ff
This is a simple native ICS backend that matches the layout of
the Microwatt implementation of ICS.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
[mpe: Add empty ics_native_init() to unbreak non-microwatt builds]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
fixup-ics
Link: https://lore.kernel.org/r/YMwW8cxrwB2W5EUN@thinks.paulus.ozlabs.org
powerpc/microwatt: Populate platform bus from device-tree2021-06-21T11:15:26ZBenjamin Herrenschmidtbenh@kernel.crashing.org2021-06-18T03:45:11Zurn:sha1:0d0f9e5f2fa7aacf22892078a1065fa5d0ce941b
Just like any other embedded platform.
Add an empty soc node.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/YMwWx98+PMibZq/G@thinks.paulus.ozlabs.org
powerpc: Add Microwatt platform2021-06-21T11:15:26ZPaul Mackerraspaulus@ozlabs.org2021-06-18T03:43:41Zurn:sha1:53d143fe08c24c2ce44ee329e41c2a6aad57ebb5
Microwatt is a FPGA-based implementation of the Power ISA. It
currently only implements little-endian 64-bit mode, and does
not (yet) support SMP, VMX, VSX or transactional memory. It has an
optional FPU, and an optional MMU (required for running Linux,
obviously) which implements a configurable radix tree but not
hypervisor mode or nested radix translation.
This adds a new machine type to support FPGA-based SoCs with a
Microwatt core. CONFIG_MATH_EMULATION can be selected for Microwatt
SOCs which don't have the FPU.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/YMwWbZVREsVug9R0@thinks.paulus.ozlabs.org