Unfortunately SDL requires getenv() to operate, since it wants to figure out
the display type. U-Boot has its own getenv() and they conflict. As a
work-around use #define to resolve the conflict.

A better but more complex solution might be to rename some U-Boot symbols
at link time. SDL audio is not functional at present, likely due to a related
issue.

Note: Vic Yank wrote a script for this, filed in crbug.com/271125.
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

The i2s code is in fact Samsung-specific, but there might be other
implementation. Move this code into its own file. This makes it slightly
more obviously how to adjust the code to support another SoC, when someone
takes this task on.

Also drop non-FDT support, since it isn't used on Exynos 5.
Tested-by: NChe-Liang Chiou <clchiou@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add a simple LCD driver which uses SDL to display the image. We update the
image regularly, while still providing for reasonable performance.

Adjust the common lcd code to support sandbox.

For command-line runs we do not want the LCD to be displayed, so add a
--show_lcd option to enable it.
Tested-by: NChe-Liang Chiou <clchiou@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add a sound driver for sandbox, which uses SDL.
Tested-by: NChe-Liang Chiou <clchiou@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

SDL (Simple DirectMedia Layer - see www.libsdl.org) is a library which
provides simple graphics and sound features. It works under X11 and also
with a simple frame buffer interface. It is ideally suited to sandbox
U-Boot since it fits nicely with the low-level feature set required by
U-Boot. For example, U-Boot has its own font drawing routines, its own
keyboard processing and just needs raw sound output.

We can use SDL to provide emulation of these basic functions for sandbox.
This significantly expands the testing that is possible with sandbox.

Add a basic SDL library which we will use in future commits.
Tested-by: NChe-Liang Chiou <clchiou@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

In order to support the 'go' command we allow the jumping U-Boot to pass its
filename to the new U-Boot image. This can then be used to delete that image
if required.
Reviewed-by: NSimon Glass <sjg@chromium.org>
Tested-by: NChe-Liang Chiou <clchiou@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

For some tests it is useful to be able to run U-Boot again but pass on the
same memory contents. Add a function to achieve this.
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

The Chrome EC has a feature where you can access its I2C buses through a
pass-through arrangement. Add a command to support this, and export the
function for it also.
Reviewed-by: NVadim Bendebury <vbendeb@google.com>
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add board code to set up the Chrome OS EC on startup.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add a simple emulation of the Chrome OS EC for sandbox, so that it can
perform various EC tasks such as keyboard handling.
Reviewed-by: NVadim Bendebury <vbendeb@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

Due to signed/unsigned comparison, '< sizeof(struct)' does not do the right
thing, since if ec_command() returns a -ve number we will consider this be
success.

Adjust all comparisons to avoid this problem.

This error was found with sandbox, which gives a segfault in this case. On
ARM we may instead silently fail.

We should also consider turning on -Wsign-compare to catch this sort of thing
in future.
Reviewed-by: NAndrew Chew <achew@nvidia.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NVadim Bendebury <vbendeb@chromium.org>
Tested-by: NAndrew Chew <achew@nvidia.com>
Signed-off-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NJimmy Zhang <jimmzhang@nvidia.com>

Protocol version 3 will be attempted first; if the EC doesn't support
it, u-boot will fall back to the old protocol version (2).
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NRandall Spangler <rspangler@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

Protocol v2 was shipped with snow, link and spring. Protocol v3 is for
pit and is targetted at SPI operation.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Version 1 protocols (without command version) were already no longer
supported in cros_ec.c.  This removes some dead code from the
cros_ec_i2c driver.

Version 2 protcols (with command version) are now called
protocol_version=2, instead of cmd_version_is_supported=1.

A subsequent change will introduce protocol version 3 for SPI.
Reviewed-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NRandall Spangler <rspangler@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

The EC messages have been expanded and some parts have been renamed.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Flash region access is not tied to having commands, so adjust the #ifdef
to reflect this.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Some systems do not have an EC interrupt. Rather than assuming that the
interrupt is always present, and hanging forever waiting for more input,
handle the missing interrupt. This works by reading key scans only until
we get an identical one. This means the EC keyscan FIFO is empty.
Tested-by: NChe-Liang Chiou <clchiou@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

There is no need to support old style EC moving forward. Ultimately we
should get rid of the check_version() API. For now just return error
in case the EC does not seem to support the new API.
Reviewed-by: NVadim Bendebury <vbendeb@google.com>
Tested-by: NVadim Bendebury <vbendeb@google.com>
Signed-off-by: NVadim Bendebury <vbendeb@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

In order to talk to the EC properly we need to be able to understand the
layout of its internal flash memory. This permits emulation of the EC
for sandbox, and also software update in a system with a real EC.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add a common library for obtaining access to the Chrome OS EC. This is
used by boards which need to talk to the EC.
Reviewed-by: NVadim Bendebury <vbendeb@google.com>
Tested-by: NVadim Bendebury <vbendeb@google.com>
Signed-off-by: NVadim Bendebury <vbendeb@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

A flash map describes the layout of flash memory in terms of offsets and
sizes for each region. Add a function to read a flash map entry from the
device tree.
Reviewed-by: NChe-Liang Chiou <clchiou@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add an enum for the number of flash regions so we can keep track of all
the possible regions.
Reviewed-by: NRandall Spangler <rspangler@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add an LCD display and keyboard to the sandbox device tree so that these
features can be used.
Signed-off-by: NSimon Glass <sjg@chromium.org>

At present we use U-Boot's filesystem layer to read the sandbox device tree,
but this is problematic since it relies on a temporary feauture added
there. Since we plan to implement proper block layer support for sandbox,
change this code to use the os layer functions instead. Also use the new
fdt_create_empty_tree() instead of our own code.
Signed-off-by: NSimon Glass <sjg@chromium.org>

The current 4MB size is a little small for some tests, so increase it.
Reviewed-by: NHung-ying Tyan <tyanh@chromium.org>
Signed-off-by: NSimon Glass <sjg@chromium.org>

This function does not actually change the pointer contents, so use const
so that functions which have a const pointer do not need to cast.
Signed-off-by: NSimon Glass <sjg@chromium.org>

The commit 6af8dc3e broke support for
S25FL032P and S25FL064P by carelessly removing the code handling special
page size for these two SPI NOR flashes and unifying the code under the
assumption that Extended JEDEC ID of 0x4d00 always implies 512b page size.

Add special case handling for these two SPI NOR flashes.
Signed-off-by: NMarek Vasut <marex@denx.de>
Reviewed-by: NJagannadha Sutradharudu Teki <jaganna@xilinx.com>

Refactor the code a bit to make it better in readability.
Remove the comments because now the intention of the code is pretty clear.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Reviewed-by: NJagannadha Sutradharudu Teki <jaganna@xilinx.com>

Squash the malloc()+memset() combo in favor of calloc().
Signed-off-by: NJagannadha Sutradharudu Teki <jaganna@xilinx.com>
Acked-by: NMarek Vasut <marex@denx.de>

Squash the malloc()+memset() combo in favor of calloc().
Signed-off-by: NMarek Vasut <marex@denx.de>
Reviewed-by: NJagannadha Sutradharudu Teki <jaganna@xilinx.com>

Add IDs for this new chip.
Signed-off-by: NMarek Vasut <marex@denx.de>
Reviewed-by: NJagannadha Sutradharudu Teki <jaganna@xilinx.com>

Both of these chips have 256kB big sectors, thus the _256K suffix,
compared to their _64K counterparts, which have 64kB sectors. Also,
they have four times less sectors than their _64K counterparts.
Signed-off-by: NMarek Vasut <marex@denx.de>
Tested-by: NJagannadha Sutradharudu Teki <jaganna@xilinx.com>

romImage is set by CONFIG_ECOVEC_ROMIMAGE_ADDR to 0xA0040000.
Signed-off-by: NBaruch Siach <baruch@tkos.co.il>
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org>

Add missing port X data register, and fix the offset of ports Y and Z.
Signed-off-by: NBaruch Siach <baruch@tkos.co.il>
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org>

The tools "buildman" and "patman" are written in Python.
When we run them, "*.pyc" files are created under
tools/buildman, tools/patman directories.

They should be cleaned up by "make distclean".
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>
Acked-by: NSimon Glass <sjg@chromium.org>

These variable are no longer used.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Prior to Kbuild, $(OBJTREE) was used for pointing to the
top of build directory with absolute path.

In Kbuild style, $(objtree) is used instead.
This commit renames OBJTREE to objtree and delete the
defition of OBJTREE.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Prior to Kbuild, $(TOPDIR) or $(SRCTREE) was used for
pointing to the top of source directory.
(No difference between the two.)

In Kbuild style, $(srctree) is used for instead.
This commit renames SRCTREE to srctree and deletes the
defition of SRCTREE.

Note that SRCTREE in scripts/kernel-doc, scripts/docproc.c,
doc/DocBook/Makefile should be keep.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Prior to Kbuild, $(TOPDIR) or $(SRCTREE) was used for
pointing to the top of source directory.
(No difference between the two.)

In Kbuild style, $(srctree) is used instead.
This commit renames TOPDIR to srctree and delete the
defition of TOPDIR.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>

Non-empty $(KBUILD_SRC) means out-of-tree build.
Signed-off-by: NMasahiro Yamada <yamada.m@jp.panasonic.com>