CVS log for src/sys/arch/evbarm/conf/Attic/std.nitrogen6

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Keyword substitution: kv
Default branch: MAIN

imx6 kernels are part of GENERIC now

Mostly merge changes from HEAD upto 20200411

Modified i.MX GPIO control module and PCIe module.

+ Add imxpcie.c
  imx PCIe common driver

Sync with HEAD

Convert remaining armv7 kernels to generic start and remove a bunch of
code including a9_mpsubr.S.

Thanks to Lwazi Dube for testing PANDABOARD and BEAGLEBONE.

Sync with head

Provide generic start code that assumes the MMU is off and caches are
disabled as per the linux booting protocol for ARMv6 and ARMv7 boards.
u-boot image type should be changed to 'linux' for correct behaviour.

The new start code builds a minimal "bootstrap" L1PT with cached access
disabled and uses the same table for all processors.  AP startup is
performed in less steps and more code is written in C.

The bootstrap tables and stack are placed into an (orphaned) section
"_init_memory" which is given to uvm when it is no longer used.

Various kernels have been converted to use this code and tested.  Some
boards were provided by TNF. Thanks!

The GENERIC kernel now boots on boards using the TEGRA, SUNXI and EXYNOS
kernels. The GENERIC kernel will also work on RPI2 using u-boot.

Thanks to martin@ and aymeric@ for testing on parallella and nanosoc
respectively

Only ent KERNEL_BASE_EXT when we want to change KERNEL_BASE from its
default of 0x8000_0000

Don't use KERNEL_BASE_EXT where KERNEL_BASE should be instead.

Workaround a as(1) weirdness in armadaxp_start.S

Sort options.

No functional change.

Whitespace consistency.

{make,}options<space><tab>
everything else just <tab?

update from HEAD

Sync with HEAD

file std.nitrogen6 was added on branch tls-maxphys on 2017-12-03 11:36:03 +0000

Define __HAVE_CPU_UAREA_ALLOC_IDLELWP

Sync with HEAD.  (Note that most of these changes are simply $NetBSD$
tag issues.)

Sync with HEAD

Add support imx6 PCIe controller.

Sync with HEAD

- setup iomux before attach console
- define EVBARM_BOARDTYPE in each config file
- add iomux settings for UART1
- add some iomux definitions

Sync with HEAD

on iMX6, disable __HAVE_MM_MD_DIRECT_MAPPED_PHYS and PMAP_NEED_ALLOC_POOLPAGE by default.

add support i.MX6 and NITROGEN6X evaluation board