u-boot.git/arch/arc, branch v2016.01

axs103: add support of generic OHCI USB 1.1 controller

2015-12-21T20:29:04+00:00

This commit adds support of USB 1.1 storage media on AXS103 board.
For some yet unknown reason USB 2.0 doesn't work on AXS103 board issuing
messages like this:
------------------------>8-------------------
AXS# usb start
starting USB...
USB0:   USB EHCI 1.00
scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80
unable to get device descriptor (error=-1)
1 USB Device(s) found
------------------------>8-------------------

As a work-around we're falling back to USB 1.1.
Indeed it is much slower but at least USB storage devices are usable on
AXS103.

Signed-off-by: Alexey Brodkin 
Cc: Marek Vasut 
Cc: Simon Glass

axs10x: add support of generic EHCI USB 2.0 controller

2015-12-08T14:29:56+00:00

This commit adds support of USB 2.0 storage media on AXS10x boards.

Signed-off-by: Alexey Brodkin 
Cc: Marek Vasut 
Cc: Simon Glass

board: axs10x switch serial port and Ethernet to driver model

2015-11-17T21:39:22+00:00

With this change Synopsys DesignWare SDP board is switched to driver
model for both serial port (serial_dw) and Ethernet (Designware GMAC).

This simplifies include/configs/axs101.h and allows for reuse of Linux's
Device Tree description.

For simplicity Linux's .dts files are not blindly copied but only very
few extracts of them are really used (those that are supported in U-Boot
at the moment).

Signed-off-by: Alexey Brodkin 
Reviewed-by: Simon Glass 
Cc: Masahiro Yamada

arc: add empty asm/processor.h to satisfy compilation of USB code

2015-11-17T21:39:22+00:00

common/usb.c unconditionally includes 
And now to allow USB support on ARC boards we have to have that header.

Signed-off-by: Alexey Brodkin

arc: add stubs for map_physmem() and unmap_physmem()

2015-11-17T21:38:35+00:00

Up until now there was no need in those stubs.

But since following commit compilation of U-Boot on ARC is broken:
------------------------>8----------------------
commit 7861204c9af7fec1ea9b41541c272516235a6c93
Author: Stephen Warren 
Date:   Sat Oct 3 13:56:46 2015 -0600

    itest: make memory access work under sandbox

    itest accesses memory, and hence must map/unmap it. Without doing so, it
    accesses invalid addresses and crashes.

    Signed-off-by: Stephen Warren 
    Reviewed-by: Simon Glass 
------------------------>8----------------------

That's because CMD_ITEST is enabled by default in common/Kconfig and now
map_physmem()/unmap_physmem() is used there.

So this patch adds missing stubs for ARC.

Signed-off-by: Alexey Brodkin 
Reviewed-by: Simon Glass 
Cc: Stephen Warren

Various Makefiles: Add SPDX-License-Identifier tags

2015-11-10T14:19:52+00:00

After consulting with some of the SPDX team, the conclusion is that
Makefiles are worth adding SPDX-License-Identifier tags too, and most of
ours have one.  This adds tags to ones that lack them and converts a few
that had full (or in one case, very partial) license blobs into the
equivalent tag.

Cc: Kate Stewart 
Signed-off-by: Tom Rini

arc: Use the generic bitops headers

2015-11-05T15:52:29+00:00

The generic bitops headers are required when calling logarithmic
functions, such as ilog2().

Signed-off-by: Fabio Estevam

arc: make AXS101 default platform

2015-09-07T10:38:24+00:00

This fixes building in automated flow that doesn't use defconfigs.

See discussion on that topic here:
 http://patchwork.ozlabs.org/patch/502558/

See similar patches for other architectures/platforms  here:
 [1] http://git.denx.de/?p=u-boot.git;a=commit;h=ff560a13056a565a4e9ce1761bd04276a3cace88
 [2] http://git.denx.de/?p=u-boot.git;a=commit;h=589907e2c187ec69b351c38ccda36730d25ab5d6

And while at it add missing shell prompt to axs103.

Cc: Tom Rini 
Cc: Joe Hershberger 
Cc: Masahiro Yamada 
Signed-off-by: Alexey Brodkin

arc: significant cache rework

2015-07-01T14:17:27+00:00

[1] Align cache management functions to those in Linux kernel. I.e.:
    a) Use the same functions for all cache ops (D$ Inv/Flush)
    b) Split cache ops in 3 sub-functions: "before", "lineloop" and
"after". That way we may re-use "before" and "after" functions for
region and full cache ops.

 [2] Implement full-functional L2 (SLC) management. Before SLC was
simply disabled early on boot. It's also possible to enable or disable
L2 cache from config utility.

 [3] Disable/enable corresponding caches early on boot. So if U-Boot is
configured to use caches they will be used at all times (this is useful
in partucular for speed-up of relocation).

Signed-off-by: Alexey Brodkin

arc: implement slave cores kick-start for Linux kernel

2015-07-01T14:17:27+00:00

With new SMP-enabled CPUs with ARC HS38 cores and corresponding support
in Linux kernel it's required to add basic SMP support in U-Boot.

Currently we assume the one and only core starts execution after
power-on. So most of things in U-Boot is handled in UP mode.

But when U-Boot is used for loading and starting Linux kernel right
before jumping to kernel's entry point U-Boot:
 [1] Sets all slave cores to jump to the same address [kernel's entry
point]
 [2] Really starts all slav cores

In ARC's implemetation of SMP in Linux kernel all cores are supposed to
run the same start-up code. But only core with ID 0 (master core)
processes further while others are looping waiting for master core to
complete some initialization.

That means it's safe to un-pause slave cores and let them execute kernel
- they will wait for master anyway.

Signed-off-by: Alexey Brodkin 
Cc: Vineet Gupta