platform/kernel/u-boot.git
8 years agomx7_common: Define CONFIG_SYS_MALLOC_LEN in the board file
Fabio Estevam [Sat, 26 Mar 2016 16:30:49 +0000 (13:30 -0300)]
mx7_common: Define CONFIG_SYS_MALLOC_LEN in the board file

Having CONFIG_SYS_MALLOC_LEN in mx7_common.h is not a good idea,
because the malloc() pool size is board dependent.

For example: if a certain board has support for splashscreen or DFU,
it may be necessary to adjust CONFIG_SYS_MALLOC_LEN to a larger value.

So define CONFIG_SYS_MALLOC_LEN in each board config file.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agowarp7: Pass the UART base definition
Fabio Estevam [Sat, 26 Mar 2016 16:30:48 +0000 (13:30 -0300)]
warp7: Pass the UART base definition

Since commit 5d69269deed0 ("mx7dsabresd: Define serial port locally")
we need to specify the UART base address in each board config
file, so do this to avoid a build error.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agomx6sabresd: Remove unneeded enable_lvds() function
Fabio Estevam [Fri, 25 Mar 2016 14:37:04 +0000 (11:37 -0300)]
mx6sabresd: Remove unneeded enable_lvds() function

enable_lvds() function only set bits IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT and
IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT, but these bits were already set
previously inside setup_display().

We can safely remove enable_lvds() then.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agoarm: mxs: Update MX28EVK config
Marek Vasut [Wed, 23 Mar 2016 23:57:05 +0000 (00:57 +0100)]
arm: mxs: Update MX28EVK config

Enable FIT image support, EXT4 support and generic FS support.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agoimx: mx7d: move MX7D to Kconfig entry
Peng Fan [Thu, 3 Mar 2016 07:56:02 +0000 (15:56 +0800)]
imx: mx7d: move MX7D to Kconfig entry

If including MX7D in CONFIG_SYS_EXTRA_OPTIONS, CONFIG_ROM_UNIFIED_SECTIONS
 will not effect.So move MX7D to Kconfig entry from CONFIG_SYS_EXTRA_OPTIONS to
"select MX7D" to boards using i.MX7 Dual.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agoimx: mx6sx: move MX6SX to Kconfig entry
Peng Fan [Thu, 3 Mar 2016 07:56:01 +0000 (15:56 +0800)]
imx: mx6sx: move MX6SX to Kconfig entry

If including MX6SX in CONFIG_SYS_EXTRA_OPTIONS, CONFIG_ROM_UNIFIED_SECTIONS
will not effect.So move MX6SX to Kconfig entry from CONFIG_SYS_EXTRA_OPTIONS to
"select MX6SX" to boards using i.MX6 SoloX.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agoarm: mx6: Add CCV xPress board support
Stefan Roese [Wed, 10 Feb 2016 10:41:26 +0000 (11:41 +0100)]
arm: mx6: Add CCV xPress board support

This patch add support for the CCV xPress board which is equipped
with the i.MX6UL. And provides the following interfaces:

- 128MiB DDR
- UART
- I2C
- eMMC (with booting)
- Ethernet
- USB

This patch adds two build targets. One with and one without SPL. The
non-SPL version is used for loading U-Boot via USB (imx_usb_loader).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
8 years agoarm: mx6: Add UART8 base address for i.MX6UL
Stefan Roese [Wed, 10 Feb 2016 10:41:25 +0000 (11:41 +0100)]
arm: mx6: Add UART8 base address for i.MX6UL

Add the base address for the i.MX6UL so that this UART can be used.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Ye Li <ye.li@nxp.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
8 years agowarp7: Add initial support
Fabio Estevam [Mon, 29 Feb 2016 12:33:22 +0000 (09:33 -0300)]
warp7: Add initial support

Add the basic support for Warp7 board.

For more information about this reference design, please visit:

https://www.element14.com/community/docs/DOC-79058/l/warp-7-the-next-generation-wearable-reference-platform

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
8 years agomx7_common: Put early/late init configs into board file
Fabio Estevam [Mon, 29 Feb 2016 12:33:21 +0000 (09:33 -0300)]
mx7_common: Put early/late init configs into board file

CONFIG_BOARD_EARLY_INIT_F and CONFIG_BOARD_LATE_INIT should not be
placed into mx7_common because not all boards need these options.

Move them to the board file instead.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
8 years agomx6sabresd: Use VESA 1024x768 timings
Fabio Estevam [Wed, 16 Mar 2016 15:55:03 +0000 (12:55 -0300)]
mx6sabresd: Use VESA 1024x768 timings

VESA 1024x768 results in much more accurate timings.

Based on the patch from Soeren Moch for the tbs2910 board.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agomx27: 16-bit wide watchdog registers
Leonid Iziumtsev [Sun, 20 Mar 2016 13:10:55 +0000 (14:10 +0100)]
mx27: 16-bit wide watchdog registers

Make the watchdog registers 16-bit wide, as they are according to TRM.

Signed-off-by: Leonid Iziumtsev <leonid.iziumtsev@se.atlascopco.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agomx6sabre_common: Fix U-Boot corruption after 'saveenv'
Fabio Estevam [Mon, 21 Mar 2016 14:00:53 +0000 (11:00 -0300)]
mx6sabre_common: Fix U-Boot corruption after 'saveenv'

Booting mx6qp sabreauto board and then doing:

=> saveenv
=> reset

, causes a system hang.

This happens because the size of the U-Boot binary is larger than
CONFIG_ENV_OFFSET.

Fix this problem by increasing CONFIG_ENV_OFFSET, so that the U-boot binary
and the environment variables region do not overlap.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
8 years agoarm: imx6: Switch DDR3 calibration to wait_for_bit()
Marek Vasut [Wed, 2 Mar 2016 13:49:51 +0000 (14:49 +0100)]
arm: imx6: Switch DDR3 calibration to wait_for_bit()

Switch the DDR3 calibration from ad-hoc implementation of wait_for_bit()
to generic implementation of wait_for_bit().

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>
8 years agoarm: mx5: Enable NAND TrimFFS on M53EVK
Marek Vasut [Sun, 20 Mar 2016 16:53:53 +0000 (17:53 +0100)]
arm: mx5: Enable NAND TrimFFS on M53EVK

Enable NAND TrimFFS support in M53EVK, since it is convenient when
installing UBI images to NAND.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
8 years agoimx: print ARM clock for clocks command
Peng Fan [Wed, 9 Mar 2016 08:44:38 +0000 (16:44 +0800)]
imx: print ARM clock for clocks command

Default print ARM clock for clocks command.
Test on i.MX6UL 14x14 evk board:
"
=> clocks
PLL_SYS         792 MHz
PLL_BUS         528 MHz
PLL_OTG         480 MHz
PLL_NET          50 MHz

ARM          396000 kHz
"

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
8 years agoimx: mx6ul configure the PMIC_STBY_REQ pin as open drain
Peng Fan [Wed, 9 Mar 2016 08:44:37 +0000 (16:44 +0800)]
imx: mx6ul configure the PMIC_STBY_REQ pin as open drain

Configure the PMIC_STBY_REQ pin as open drain 100K according
to the design team's requirement for the PMIC_STBY_REQ pin
for i.MX 6UltraLite TO1.0.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
8 years agoimx: mx6ul: skip setting ahb rate
Peng Fan [Wed, 9 Mar 2016 08:44:36 +0000 (16:44 +0800)]
imx: mx6ul: skip setting ahb rate

To i.MX6UL, default ARM rate and AHB rate is 396M and 198M,
no need to set them.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
8 years agoimx: mx6: Fix incorrect clear mmdc_ch0 handshake mask
Ye Li [Wed, 9 Mar 2016 08:13:48 +0000 (16:13 +0800)]
imx: mx6: Fix incorrect clear mmdc_ch0 handshake mask

Since the MX6UL/SL/SX only has one DDR channel, in CCM_CCDR register
the bit[17] for mmdc_ch0 is reserved and its proper state should be 1.
When clear this bit, the periph_clk_sel cannot be set and that
CDHIPR[periph_clk_sel_busy] handshake never clears.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Acked-by: Stefano Babic <sbabic@denx.de>
8 years agoMerge branch 'next'
Stefano Babic [Sun, 20 Mar 2016 21:04:29 +0000 (22:04 +0100)]
Merge branch 'next'

8 years agodm: blk: Add tests for block devices
Simon Glass [Sun, 13 Mar 2016 14:22:36 +0000 (08:22 -0600)]
dm: blk: Add tests for block devices

Add some tests to check that block devices work as expected.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
8 years agodm: sandbox: Drop the pre-DM host implementation
Simon Glass [Sun, 13 Mar 2016 14:22:35 +0000 (08:22 -0600)]
dm: sandbox: Drop the pre-DM host implementation

Driver model is used for host device block devices now, so we don't need the
old code. Remove it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
8 years agodm: sandbox: Switch over to use DM for block devices
Simon Glass [Sun, 13 Mar 2016 14:22:34 +0000 (08:22 -0600)]
dm: sandbox: Switch over to use DM for block devices

Now that the drivers used by sandbox support CONFIG_BLK, we can switch
sandbox over to use driver model for block devices.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
8 years agodm: usb: Unbind old block devices when shutting down USB
Simon Glass [Sun, 13 Mar 2016 14:22:33 +0000 (08:22 -0600)]
dm: usb: Unbind old block devices when shutting down USB

When 'usb start' is used, block devices are created for any USB flash sticks
and disks, etc. When 'usb stop' is used, these block devices are currently
not removed.

We don't want old block devices hanging around since they can still be
visible to U-Boot. Therefore, when USB is shut down, remove and unbind all
the block devices created by the USB subsystem.

Possibly we should unbind all devices which don't cause problems by being
unbound. Most likely we can remove everything except USB controllers, hubs
and emulators. We can consider that later.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
8 years agobuildman: Clarify the use of -V
Simon Glass [Sun, 13 Mar 2016 01:50:33 +0000 (18:50 -0700)]
buildman: Clarify the use of -V

This option outputs to the log file, not to the terminal. Clarify that in
the help, and add a mention of it in the README.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
8 years agobuildman: Add a way to specific a full toolchain prefix
Simon Glass [Sun, 13 Mar 2016 01:50:32 +0000 (18:50 -0700)]
buildman: Add a way to specific a full toolchain prefix

At present buildman allows you to specify the directory containing the
toolchain, but not the actual toolchain prefix. If there are multiple
toolchains in a single directory, this can be inconvenient.

Add a new 'toolchain-prefix' setting to the settings file, which allows
the full prefix (or path to the C compiler) to be specified.

Update the documentation to match.

Suggested-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
8 years agobuildman: Allow branch names which conflict with directories
Simon Glass [Sun, 13 Mar 2016 01:50:31 +0000 (18:50 -0700)]
buildman: Allow branch names which conflict with directories

At present if you try to use buildman with the branch 'test' it will
complain that it is unsure whether you mean the branch or the directory.
This is a feature of the 'git log' command that buildman uses. Fix it
by resolving the ambiguity.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
8 years agodm: ns16550: Add support for reg-offset property
Michal Simek [Tue, 16 Feb 2016 15:17:49 +0000 (16:17 +0100)]
dm: ns16550: Add support for reg-offset property

reg-offset is the part of standard 8250 binding in the kernel.
It is shifting start of address space by reg-offset.
On Xilinx platform this offset is typically 0x1000.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Moved the new field to the end of the struct to avoid problems:
Signed-off-by: Simon Glass <sjg@chromium.org>
8 years agoRevert "fdt: fix address cell count checking in fdt_translate_address()"
Przemyslaw Marczak [Tue, 12 Jan 2016 14:40:44 +0000 (15:40 +0100)]
Revert "fdt: fix address cell count checking in fdt_translate_address()"

This reverts commit 71105f50fedddfa5b0535d102c3d5078671721ad.

The reverted commit was applied for a temporary to unbreak
few Exynos boards on the release.

After the discussion about the change, this commit should be avoided.
Fixed device-tree for Exynos, allows reverting it without any issues.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
8 years agodts:exynos:update pinctrl size-cells and fix child regs
Przemyslaw Marczak [Tue, 12 Jan 2016 14:40:43 +0000 (15:40 +0100)]
dts:exynos:update pinctrl size-cells and fix child regs

This change is required to avoid warnings about invalid
size-cells defined in device-tree pinctrl nodes for Exynos.

Tested on:
- Odroid U3
- Odroid XU3

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Minkyu Kang <mk7.kang@samsung.com>
8 years agogpio: Report errors when GPIOs cannot be read
Simon Glass [Tue, 1 Sep 2015 00:55:36 +0000 (18:55 -0600)]
gpio: Report errors when GPIOs cannot be read

Some controllers do not allow the output value to be read. Detect this and
report the error in that case.

Signed-off-by: Simon Glass <sjg@chromium.org>
8 years agocmd_dhry.c: Use lldiv for vax_mips calculation as well
Tom Rini [Thu, 17 Mar 2016 14:14:25 +0000 (10:14 -0400)]
cmd_dhry.c: Use lldiv for vax_mips calculation as well

Since dhry_per_sec is a u64 we must also use lldiv here when working
with it.  Otherwise:
../lib/dhry/cmd_dhry.c:(.text.do_dhry+0xd8): undefined reference to `__udivdi3'

On some platforms.

Signed-off-by: Tom Rini <trini@konsulko.com>
8 years agox86: Add congatec conga-QA3/E3845-4G (Bay Trail) support
Stefan Roese [Wed, 16 Mar 2016 07:48:21 +0000 (08:48 +0100)]
x86: Add congatec conga-QA3/E3845-4G (Bay Trail) support

This patch adds support for the congatec conga-QA3/E3845-4G eMMC8 SoM,
installed on the congatec Qseven 2.0 evaluation carrier board
(conga-QEVAL).

Its port is very similar to the MinnowboardMAX port and also uses
the Intel FSP as described in doc/README.x86.

Currently supported are the following interfaces / devices:
- UART (via Winbond legacy SuperIO chip on carrier board)
- Ethernet (PCIe Intel I210 / E1000)
- SPI including SPI NOR as boot-device
- USB 2.0
- SATA via U-Boot SCSI IF
- eMMC
- Video (HDMI output @ 800x600)
- PCIe

Not supported yet is:
- I2C
- USB 3.0

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add support for the samus chromebook
Simon Glass [Wed, 16 Mar 2016 13:44:43 +0000 (07:44 -0600)]
x86: Add support for the samus chromebook

This adds basic support for chromebook_samus. This is the 2015 Pixel and
is based on an Intel broadwell platform.

Supported so far are:
- Serial
- SPI flash
- SDRAM init (with MRC cache)
- SATA
- Video (on the internal LCD panel)
- Keyboard

Various less-visible drivers are provided to make the above work (e.g. PCH,
power control and LPC).

The platform requires various binary blobs which are documented in the
README. The major missing feature is USB3 since the existing U-Boot support
does not work correctly with Intel XHCI controllers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Support a chained-boot development flow
Simon Glass [Wed, 16 Mar 2016 13:44:40 +0000 (07:44 -0600)]
x86: Support a chained-boot development flow

Sometimes it is useful to jump into U-Boot directly from coreboot or UEFI
without any 16-bit init. This can help during development by allowing U-Boot
to avoid doing all the init required by the platform.

U-Boot expects its GDT to be set up correctly by its 16-bit code. If
coreboot doesn't do this (because it hasn't run the payload setup code yet)
then this won't happen.

In this case we cannot rely on the GDT settings. U-Boot will hang or crash
if these are wrong. Provide a development-only option to set up the GDT
correctly. This is just a hack so you can jump to U-Boot from any stage of
coreboot, not just at the end.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: dts: Drop memory SPD compatible string
Simon Glass [Wed, 16 Mar 2016 13:44:39 +0000 (07:44 -0600)]
x86: dts: Drop memory SPD compatible string

This is not needed now that the memory controller driver has the SPD data
in its own node.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: ivybridge: Convert to use the common SDRAM code
Simon Glass [Wed, 16 Mar 2016 13:44:38 +0000 (07:44 -0600)]
x86: ivybridge: Convert to use the common SDRAM code

Adjust the existing implementation to use the new common SDRAM init code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add common SDRAM-init code
Simon Glass [Wed, 16 Mar 2016 13:44:37 +0000 (07:44 -0600)]
x86: Add common SDRAM-init code

The code to call the memory reference code is common to several Intel CPUs.
Add common code for performing this init. Intel calls this 'Pre-EFI-Init'
(PEI), where EFI stands for Extensible Firmware Interface.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Move common PCH code into a common place
Simon Glass [Wed, 16 Mar 2016 13:44:36 +0000 (07:44 -0600)]
x86: Move common PCH code into a common place

The SATA indexed register write functions are common to several Intel PCHs.
Move this into a common location.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agodhry: Correct dhrystone calculation for fast machines
Simon Glass [Wed, 16 Mar 2016 13:44:35 +0000 (07:44 -0600)]
dhry: Correct dhrystone calculation for fast machines

At present samus reports about 5600 DMIPS. With the default iteration count
this is OK, but if 10 million runs are performed it overflows. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
8 years agoarm: Add a 64-bit division routine to the private library
Simon Glass [Wed, 16 Mar 2016 13:44:34 +0000 (07:44 -0600)]
arm: Add a 64-bit division routine to the private library

This is missing, with causes lldiv() to fail on boards with use the private
libgcc. Add the missing routine.

Code is available for using the CLZ instruction but it is not enabled at
present.

This comes from coreboot version 4.0.

Signed-off-by: Simon Glass <sjg@chromium.org>
8 years agox86: Fix a header nit in x86-chromebook.h
Simon Glass [Sat, 12 Mar 2016 05:07:35 +0000 (22:07 -0700)]
x86: Fix a header nit in x86-chromebook.h

There is an extra line in the comment in the header. Remove it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add a function to set the IOAPIC ID
Simon Glass [Sat, 12 Mar 2016 05:07:34 +0000 (22:07 -0700)]
x86: Add a function to set the IOAPIC ID

Add a function to set the ID in the IOAPIC.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Update README for new developments
Simon Glass [Sat, 12 Mar 2016 05:07:33 +0000 (22:07 -0700)]
x86: Update README for new developments

Update a few points which have become out-of-date.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Use white on black for the console on chromebooks
Simon Glass [Sat, 12 Mar 2016 05:07:32 +0000 (22:07 -0700)]
x86: Use white on black for the console on chromebooks

This is a little easier on the eyes, particularly when the backlight is set
to maximum.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add a default address for reference code
Simon Glass [Sat, 12 Mar 2016 05:07:31 +0000 (22:07 -0700)]
x86: Add a default address for reference code

Add an address which can be used for loading and running the reference code
when needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add video support
Simon Glass [Sat, 12 Mar 2016 05:07:30 +0000 (22:07 -0700)]
x86: broadwell: Add video support

Add a video driver for Intel's broadwell integrated graphics controller.
This uses a binary blob for most init, with the driver just performing a few
basic tasks.

This driver supports VESA as the mode-setting mechanism. Since most boards
don't support driver model yet with VESA, a special case is added to the
Kconfig for broadwell. Eventually all boards will use driver model and this
can be removed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add support for high-speed I/O lane with ME
Simon Glass [Sat, 12 Mar 2016 05:07:28 +0000 (22:07 -0700)]
x86: broadwell: Add support for high-speed I/O lane with ME

Provide a way to determine the HSIO (high-speed I/O) version supported by
the Intel Management Engine (ME) implementation on the platform.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add a GPIO driver
Simon Glass [Sat, 12 Mar 2016 05:07:27 +0000 (22:07 -0700)]
x86: broadwell: Add a GPIO driver

Add a GPIO driver for the GPIO peripheral found on broadwell devices.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add support for SDRAM setup
Simon Glass [Sat, 12 Mar 2016 05:07:26 +0000 (22:07 -0700)]
x86: broadwell: Add support for SDRAM setup

Broadwell uses a binary blob called the memory reference code (MRC) to start
up its SDRAM. This is similar to ivybridge so we can mostly use common code
for running this blob.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add power-control support
Simon Glass [Sat, 12 Mar 2016 05:07:25 +0000 (22:07 -0700)]
x86: broadwell: Add power-control support

Broadwell requires quite a bit of power-management setup. Add code to set
this up correctly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
[squashed in http://patchwork.ozlabs.org/patch/598373/]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add reference code support
Simon Glass [Sat, 12 Mar 2016 05:07:24 +0000 (22:07 -0700)]
x86: broadwell: Add reference code support

Broadwell needs a special binary blob to set up the PCH. Add code to run
this on start-up.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add an LPC driver
Simon Glass [Sat, 12 Mar 2016 05:07:23 +0000 (22:07 -0700)]
x86: broadwell: Add an LPC driver

Add a driver for the broadwell LPC (low-pin-count peripheral). This mostly
uses common code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add a northbridge driver
Simon Glass [Sat, 12 Mar 2016 05:07:22 +0000 (22:07 -0700)]
x86: broadwell: Add a northbridge driver

Add a driver for the broadwell northbridge. This sets up the location of
several blocks of registers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add a SATA driver
Simon Glass [Sat, 12 Mar 2016 05:07:21 +0000 (22:07 -0700)]
x86: broadwell: Add a SATA driver

Add a SATA driver for broadwell. This supports connecting an SSD and the
usual U-Boot commands to read and write data.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add a pinctrl driver
Simon Glass [Sat, 12 Mar 2016 05:07:20 +0000 (22:07 -0700)]
x86: broadwell: Add a pinctrl driver

GPIO pins need to be set up on start-up. Add a driver to provide this,
configured from the device tree.

The binding is slightly different from the existing ICH6 binding, since that
is quite verbose. The new binding should be just as extensible.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add a PCH driver
Simon Glass [Sat, 12 Mar 2016 05:07:19 +0000 (22:07 -0700)]
x86: broadwell: Add a PCH driver

Add a driver for the broadwell low-power platform controller hub.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add basic support for broadwell
Simon Glass [Sat, 12 Mar 2016 05:07:18 +0000 (22:07 -0700)]
x86: Add basic support for broadwell

This adds the broadwell architecture, with the CPU driver and some useful
header files.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: dts: Update the pinctrl binding a little
Simon Glass [Sat, 12 Mar 2016 05:07:17 +0000 (22:07 -0700)]
x86: dts: Update the pinctrl binding a little

Make a few minor updates to make the meaning clearer.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add support for running Intel reference code
Simon Glass [Sat, 12 Mar 2016 05:07:16 +0000 (22:07 -0700)]
x86: Add support for running Intel reference code

Intel has invented yet another binary blob which firmware is required to
run. This is run after SDRAM is ready. It is linked to load at a particular
address, typically 0, but is a relocatable ELF so can be moved if required.

Add support for this in the build system. The file should be placed in the
board directory, and called refcode.elf.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Drop all the old pin configuration code
Simon Glass [Sat, 12 Mar 2016 05:07:15 +0000 (22:07 -0700)]
x86: Drop all the old pin configuration code

We don't need this anymore - we can use device tree and the new pinconfig
driver instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: gpio: Allow the pinctrl driver to set up the pin config
Simon Glass [Sat, 12 Mar 2016 05:07:14 +0000 (22:07 -0700)]
x86: gpio: Allow the pinctrl driver to set up the pin config

Rather than setting up the pin configuration in the GPIO driver, use the
new pinctrl driver to do it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add an ICH6 pin configuration driver
Simon Glass [Sat, 12 Mar 2016 05:07:13 +0000 (22:07 -0700)]
x86: Add an ICH6 pin configuration driver

Add a driver which sets up the pin configuration on x86 devices with an ICH6
(or later) Platform Controller Hub.

The driver is not in the pinctrl uclass due to some oddities of the way x86
devices work:

- The GPIO controller is not present in I/O space until it is set up
- This is done by writing a register in the PCH
- The PCH has a driver which itself uses PCI, another driver
- The pinctrl uclass requires that a pinctrl device be available before any
other device can be probed

It would be possible to work around the limitations by:
- Hard-coding the GPIO address rather than reading it from the PCH
- Using special x86 PCI access to set the GPIO address in the PCH

However it is not clear that this is better, since the pin configuration
driver does not actually provide normal pin configuration services - it
simply sets up all the pins statically when probed. While this remains the
case, it seems better to use a syscon uclass instead. This can be probed
whenever it is needed, without any limitations.

Also add an 'invert' property to support inverting the input.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: link: Add pin configuration to the device tree
Simon Glass [Sat, 12 Mar 2016 05:07:12 +0000 (22:07 -0700)]
x86: link: Add pin configuration to the device tree

At present pin configuration on link does not use the standard mechanism,
but some rather ugly custom code. As a first step to resolving this, add the
pin configuration to the device tree.

Four of the GPIOs must be available before relocation (for SDRAM pin
strapping).

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Update microcode for secondary CPUs
Simon Glass [Sat, 12 Mar 2016 05:07:11 +0000 (22:07 -0700)]
x86: Update microcode for secondary CPUs

Each CPU needs to have its microcode loaded. Add support for this so that
all CPUs will have the same version.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: ivybridge: Show microcode version for each core
Simon Glass [Sat, 12 Mar 2016 05:07:10 +0000 (22:07 -0700)]
x86: ivybridge: Show microcode version for each core

Enable the microcode feature so that the microcode version is shown with the
'cpu detail' command.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Record the CPU details when starting each core
Simon Glass [Sat, 12 Mar 2016 05:07:09 +0000 (22:07 -0700)]
x86: Record the CPU details when starting each core

As each core starts up, record its microcode version and CPU ID so these can
be presented with the 'cpu detail' command.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Move common MRC Kconfig options to the common file
Simon Glass [Sat, 12 Mar 2016 05:07:08 +0000 (22:07 -0700)]
x86: Move common MRC Kconfig options to the common file

At present the MRC options are private to ivybridge. Other Intel CPUs also
use these settings. Move them to a common place.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Allow I/O functions to use pointers
Simon Glass [Sat, 12 Mar 2016 05:07:07 +0000 (22:07 -0700)]
x86: Allow I/O functions to use pointers

It is common with memory-mapped I/O to use the address of a structure member
to access memory, as in:

   struct some_regs {
      u32 ctrl;
      u32 data;
   }

   struct some_regs *regs = (struct some_regs *)BASE_ADDRESS;

   writel(1, &reg->ctrl);
   writel(2, &reg->data);

This does not currently work with inl(), outl(), etc. Add a cast to permit
this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add macros to clear and set I/O bits
Simon Glass [Sat, 12 Mar 2016 05:07:06 +0000 (22:07 -0700)]
x86: Add macros to clear and set I/O bits

The clrsetbits_...() macros are useful for working with memory mapped I/O.
But they do not work with I/O space, as used on x86 machines.

Add some macros to provide similar features for I/O.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: ivybridge: Drop sandybridge_early_init()
Simon Glass [Sat, 12 Mar 2016 05:07:01 +0000 (22:07 -0700)]
x86: ivybridge: Drop sandybridge_early_init()

This function was removed in the previous clean-up. Drop it from the header
file also.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Move Intel Management Engine code to a common place
Simon Glass [Sat, 12 Mar 2016 05:07:00 +0000 (22:07 -0700)]
x86: Move Intel Management Engine code to a common place

Some of the Intel ME code is common to several Intel CPUs. Move it into a
common location. Add a header file for report_platform.c also.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[squashed in http://patchwork.ozlabs.org/patch/598372/]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Rename PORT_RESET to IO_PORT_RESET
Simon Glass [Sat, 12 Mar 2016 05:06:59 +0000 (22:06 -0700)]
x86: Rename PORT_RESET to IO_PORT_RESET

This same name is used in USB. Add a prefix to distinguish it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Move common CPU code to its own place
Simon Glass [Sat, 12 Mar 2016 05:06:58 +0000 (22:06 -0700)]
x86: Move common CPU code to its own place

Some of the Intel CPU code is common to several Intel CPUs. Move it into a
common location along with required declarations.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Move common LPC code to its own place
Simon Glass [Sat, 12 Mar 2016 05:06:57 +0000 (22:06 -0700)]
x86: Move common LPC code to its own place

Some of the LPC code is common to several Intel LPC devices. Move it into a
common location.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add the root-complex block to common intel registers
Simon Glass [Sat, 12 Mar 2016 05:06:56 +0000 (22:06 -0700)]
x86: Add the root-complex block to common intel registers

This is similar to MCH in that it is used in various drivers. Add it to
the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Create a common header for Intel register access
Simon Glass [Sat, 12 Mar 2016 05:06:55 +0000 (22:06 -0700)]
x86: Create a common header for Intel register access

There are several blocks of registers that are accessed from all over the
code on Intel CPUs. These don't currently have their own driver and it is
not clear whether having a driver makes sense.

An example is the Memory Controller Hub (MCH). We map it to a known location
on some Intel chips (mostly those without FSP - Firmware Support Package).

Add a new header file for these registers, and move MCH into it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Move microcode code to a common location
Simon Glass [Sat, 12 Mar 2016 05:06:54 +0000 (22:06 -0700)]
x86: Move microcode code to a common location

This code is used on several Intel CPUs. Move it into a common location.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Move cache-as-RAM code into a common location
Simon Glass [Sat, 12 Mar 2016 05:06:53 +0000 (22:06 -0700)]
x86: Move cache-as-RAM code into a common location

This cache-as-RAM (CAR) code is common to several Intel chips. Create a new
intel_common directory and move it in there.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: cpu: Add functions to return the family and stepping
Simon Glass [Sat, 12 Mar 2016 05:06:52 +0000 (22:06 -0700)]
x86: cpu: Add functions to return the family and stepping

These two identifiers can be useful for drivers which need to adjust their
behaviour depending on the CPU family or stepping (revision).

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Allow use of serial soon after relocation
Simon Glass [Sat, 12 Mar 2016 05:06:51 +0000 (22:06 -0700)]
x86: Allow use of serial soon after relocation

At present on x86 machines with use cache-as-RAM, the memory goes away just
before board_init_r() is called. This means that serial drivers are
no-longer unavailable, until initr_dm() it called, etc.

Any attempt to use printf() within this period will cause a hang.

To fix this, mark the serial devices as 'unavailable' when it is no-longer
available. Bring it back when serial_initialize() is called. This means that
the debug UART will be used instead for this period.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agoinput: i8042: Make sure the keyboard is enabled
Simon Glass [Sat, 12 Mar 2016 05:06:50 +0000 (22:06 -0700)]
input: i8042: Make sure the keyboard is enabled

Add one more step into the init sequence. This fixes the keyboard on samus,
which otherwise does not work.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
8 years agosyscon: Avoid returning a device on failure
Simon Glass [Sat, 12 Mar 2016 05:06:49 +0000 (22:06 -0700)]
syscon: Avoid returning a device on failure

If the device cannot be probed, syscon_get_by_driver_data() will still
return a useful value in its devp parameter. Ensure that it returns NULL
instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agodm: timer: Correct timer init ordering after relocation
Simon Glass [Sat, 12 Mar 2016 05:06:46 +0000 (22:06 -0700)]
dm: timer: Correct timer init ordering after relocation

Commit 1057e6c broke use of the timer with driver model. If the timer is used
before relocation, then it becomes broken after relocation. This prevents
some x86 boards from booting. Fix it.

Fixes: 1057e6c (timer: Set up the real timer after driver model is available)

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: broadwell: Add a few microcode files
Simon Glass [Mon, 7 Mar 2016 02:28:34 +0000 (19:28 -0700)]
x86: broadwell: Add a few microcode files

Add two microcode files for broadwell.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add comments to the SIPI vector
Simon Glass [Mon, 7 Mar 2016 02:28:25 +0000 (19:28 -0700)]
x86: Add comments to the SIPI vector

The Intel SIPI (start-up inter-processor interrupt) vector is the entry
point for each secondary CPU (also called an AP - applications processor).
The assembler and C code are linked, so add comments to indicate this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Tidy up mp_init to reduce duplication
Simon Glass [Mon, 7 Mar 2016 02:28:22 +0000 (19:28 -0700)]
x86: Tidy up mp_init to reduce duplication

The timeout step is always 50us. By updating apic_wait_timeout() to print
the debug messages we can simplify the code. Also tidy up a few messages and
comments while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Correct duplicate POST values
Simon Glass [Mon, 7 Mar 2016 02:28:18 +0000 (19:28 -0700)]
x86: Correct duplicate POST values

Two power-on-self-test values are the same. Fix this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add a script to aid code conversion from coreboot
Simon Glass [Mon, 7 Mar 2016 02:28:17 +0000 (19:28 -0700)]
x86: Add a script to aid code conversion from coreboot

It is useful to automate the process of converting code from coreboot a
little. Add a sed script which performs some common transformations.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: gpio: Correct GPIO setup ordering
Simon Glass [Mon, 7 Mar 2016 02:28:13 +0000 (19:28 -0700)]
x86: gpio: Correct GPIO setup ordering

The Intel GPIO driver can set up the GPIO pin mapping when the first GPIO
is probed. However, it assumes that the first GPIO to be probed is in the
first GPIO bank. If this is not the case then the init will write to the
wrong registers.

Fix this. Also add a note that this code is deprecated. We should move to
using device tree instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: dts: link: Add board ID GPIOs
Simon Glass [Mon, 7 Mar 2016 02:28:12 +0000 (19:28 -0700)]
x86: dts: link: Add board ID GPIOs

At present the board ID GPIOs are hard-coded. Move them to the device tree
so that we can use general SDRAM init code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: dts: link: Move SPD info into the memory controller
Simon Glass [Mon, 7 Mar 2016 02:28:11 +0000 (19:28 -0700)]
x86: dts: link: Move SPD info into the memory controller

The SDRAM SPD (Serial Presence Detect) information should be contained
with the SDRAM controller. This makes it easier for the controller to access
it and removes the need for a separate compatible string.

As a first step, move the information.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: link: Add required GPIO properties
Simon Glass [Mon, 7 Mar 2016 02:28:10 +0000 (19:28 -0700)]
x86: link: Add required GPIO properties

In order to use GPIO phandles we need to add some GPIO properties as
specified by the GPIO bindings. Add these for link.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: Add some more common MSR indexes
Simon Glass [Mon, 7 Mar 2016 02:28:04 +0000 (19:28 -0700)]
x86: Add some more common MSR indexes

Many of the model-specific indexes are common to several Intel CPUs. Add
some more common ones, and remove them from the ivybridge-specific header
file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agox86: cpu: Make the vendor table const
Simon Glass [Mon, 7 Mar 2016 02:27:57 +0000 (19:27 -0700)]
x86: cpu: Make the vendor table const

This does not need to be modified at run-time, so make it const.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agomalloc_simple: Add a little more debugging
Simon Glass [Mon, 7 Mar 2016 02:27:55 +0000 (19:27 -0700)]
malloc_simple: Add a little more debugging

Output the pointer returned by each call to malloc(). This can be useful
when debugging memory problems.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agopci: Correct a few comments and nits
Simon Glass [Mon, 7 Mar 2016 02:27:53 +0000 (19:27 -0700)]
pci: Correct a few comments and nits

Two comments are missing a parameter and there is an extra blank line. Also
two of the region access macros are misnamed. Correct these problems.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agopci: Add functions to update PCI configuration registers
Simon Glass [Mon, 7 Mar 2016 02:27:52 +0000 (19:27 -0700)]
pci: Add functions to update PCI configuration registers

It is common to read a config register value, clear and set some bits, then
write back the updated value. Add functions to do this in one step, for
convenience.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agogpio: Use const where possible
Simon Glass [Mon, 7 Mar 2016 02:27:51 +0000 (19:27 -0700)]
gpio: Use const where possible

Some functions do not change the struct gpio_desc parameter. Update these to
use const so this is clear.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8 years agogpio: Add a function to obtain a GPIO vector value
Simon Glass [Mon, 7 Mar 2016 02:27:50 +0000 (19:27 -0700)]
gpio: Add a function to obtain a GPIO vector value

We can use GPIOs as binary digits for reading 'strapping' values. Each GPIO
is assigned a single bit and can be set high or low on the circuit board. We
already have a legacy function for reading these values. Add one that
supports driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>