ARC: [hsdk]: Enable FPU_SAVE_RESTORE

HSDK has hardware floating point and the common use case is with
glibc+hf so enable that as default.

Signed-off-by: Vineet Gupta <[email protected]>

arc: plat-hsdk: fix kconfig dependency warning when !RESET_CONTROLLER

When ARC_SOC_HSDK is enabled and RESET_CONTROLLER is disabled, it results
in the following Kbuild warning:

WARNING: unmet direc

arc: plat-hsdk: fix kconfig dependency warning when !RESET_CONTROLLER

When ARC_SOC_HSDK is enabled and RESET_CONTROLLER is disabled, it results
in the following Kbuild warning:

WARNING: unmet direct dependencies detected for RESET_HSDK
Depends on [n]: RESET_CONTROLLER [=n] && HAS_IOMEM [=y] && (ARC_SOC_HSDK [=y] || COMPILE_TEST [=n])
Selected by [y]:
- ARC_SOC_HSDK [=y] && ISA_ARCV2 [=y]

The reason is that ARC_SOC_HSDK selects RESET_HSDK without depending on or
selecting RESET_CONTROLLER while RESET_HSDK is subordinate to
RESET_CONTROLLER.

Honor the kconfig menu hierarchy to remove kconfig dependency warnings.

Fixes: a528629dfd3b ("ARC: [plat-hsdk] select CONFIG_RESET_HSDK from Kconfig")
Signed-off-by: Necip Fazil Yildiran <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Enrico Weigelt <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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ARCv2: support manual regfile save on interrupts

There's a hardware bug which affects the HSDK platform, triggered by
micro-ops for auto-saving regfile on taken interrupt. The workaround is
to inhib

ARCv2: support manual regfile save on interrupts

There's a hardware bug which affects the HSDK platform, triggered by
micro-ops for auto-saving regfile on taken interrupt. The workaround is
to inhibit autosave.

Signed-off-by: Vineet Gupta <[email protected]>

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PCI: consolidate PCI config entry in drivers/pci

There is no good reason to duplicate the PCI menu in every architecture.
Instead provide a selectable HAVE_PCI symbol that indicates availability
of

PCI: consolidate PCI config entry in drivers/pci

There is no good reason to duplicate the PCI menu in every architecture.
Instead provide a selectable HAVE_PCI symbol that indicates availability
of PCI support, and a FORCE_PCI symbol to for PCI on and the handle the
rest in drivers/pci.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Palmer Dabbelt <[email protected]>
Acked-by: Max Filippov <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Acked-by: Bjorn Helgaas <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Acked-by: Paul Burton <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>

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ARCv2: [plat-hsdk]: Save accl reg pair by default

This manifsted as strace segfaulting on HSDK because gcc was targetting
the accumulator registers as GPRs, which kernek was not saving/restoring
by

ARCv2: [plat-hsdk]: Save accl reg pair by default

This manifsted as strace segfaulting on HSDK because gcc was targetting
the accumulator registers as GPRs, which kernek was not saving/restoring
by default.

Cc: [email protected] #4.14+
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: [plat-hsdk] Add PCIe support

Add PCI support to the ARC HSDK platform allowing to use the generic PCI
setup functions.

Signed-off-by: Gustavo Pimentel <[email protected]>
Acked-by:

ARC: [plat-hsdk] Add PCIe support

Add PCI support to the ARC HSDK platform allowing to use the generic PCI
setup functions.

Signed-off-by: Gustavo Pimentel <[email protected]>
Acked-by: Alexey Brodkin <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: [plat-hsdk] select CONFIG_RESET_HSDK from Kconfig

Signed-off-by: Vineet Gupta <[email protected]>

ARC: [plat-hsdk] use actual clk driver to manage cpu clk

With corresponding clk driver now merged upstream, switch to it.

- core_clk now represent the PLL (vs. fixed clk before)
- input_clk repre

ARC: [plat-hsdk] use actual clk driver to manage cpu clk

With corresponding clk driver now merged upstream, switch to it.

- core_clk now represent the PLL (vs. fixed clk before)
- input_clk represent the clk signal src for PLL (basically xtal)

Signed-off-by: Eugeniy Paltsev <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: [plat-hsdk] initial port for HSDK board

This initial port adds support of ARC HS Development Kit board with some
basic features such serial port, USB, SD/MMC and Ethernet.

Essentially we run L

ARC: [plat-hsdk] initial port for HSDK board

This initial port adds support of ARC HS Development Kit board with some
basic features such serial port, USB, SD/MMC and Ethernet.

Essentially we run Linux kernel on all 4 cores (i.e. utilize SMP) and
heavily use IO Coherency for speeding-up DMA-aware peripherals.

Note as opposed to other ARC boards we link Linux kernel to
0x9000_0000 intentionally because cores 1 and 3 configured with DCCM
situated at our more usual link base 0x8000_0000. We still can use
memory region starting at 0x8000_0000 as we reallocate DCCM in our
platform code.

Note that PAE remapping for DMA clients does not work due to an RTL bug,
so CREG_PAE register must be programmed to all zeroes, otherwise it will
cause problems with DMA to/from peripherals even if PAE40 is not used.

Acked-by: Rob Herring <[email protected]>
Signed-off-by: Alexey Brodkin <[email protected]>
Signed-off-by: Eugeniy Paltsev <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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