Commit graph

38414 commits

Author SHA1 Message Date
Simon Glass
b9c771b04c sandbox: Don't exit when bootm completes
At present sandbox exits when the 'bootm' command completes, since it is not
actually able to run the OS that is loaded. Normally 'bootm' failure is
considered a fatal error in U-Boot.

However this is annoying for tests, which may want to examine the state
after a test is complete. In any case there is a 'reset' command which can
be used to exit, if required.

Change the behaviour to return normally from the 'bootm' command on sandbox.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Teddy Reed <teddy.reed@gmail.com>
2016-07-14 18:22:32 -04:00
Simon Glass
07f4eadc99 test: Add a simple script to run tests on sandbox
A common check before sending patches is to run all available tests on
sandbox. But everytime I do this I have to look up the README. This presents
quite a barrier to actually doing this.

Add a shell script to help. To run the tests, type:

   test/run

in the U-Boot directory, which should be easy to remember.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Teddy Reed <teddy.reed@gmail.com>
2016-07-14 18:22:32 -04:00
Simon Glass
f6349c3c4c test: Add a README
Add a few notes about how testing works in U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Teddy Reed <teddy.reed@gmail.com>
2016-07-14 18:22:31 -04:00
Simon Glass
022885cb9c tools: Allow building with debug enabled
Sometimes it is useful to build tools with debugging information included so
that line-number information is available when run under gdb. Add a Kconfig
option to support this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:31 -04:00
Simon Glass
51f03e6a75 mkimage: Show item lists for all categories
Update the error-handling code for -A, -C and -O to show a list of valid
options when an invalid one is provided.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Vinoth Eswaran <evinoth1206@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:31 -04:00
Simon Glass
f24e10500f mkimage: Use generic code for showing an 'image type' error
The existing error code only displays image types which are claimed by a
particular U_BOOT_IMAGE_TYPE() driver. But this does not seem correct. The
mkimage tool should support all image types, so it makes sense to allow
creation of images of any type with the tool.

When an incorrect image type is provided, use generic code to display the
error.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:30 -04:00
Simon Glass
3066422512 mkimage: Allow display of a list of any image header category
Add a generic function which can display a list of items in any category.
This will allow displaying of images for the -A, -C, -O and -T flags. At
present only -T is supported.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:30 -04:00
Simon Glass
1426220b0e image: Add functions to obtain category information
Add generic functions which can look up information about a category:

- the number of items in the category
- the category description
- an item long time
- an item short time

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:30 -04:00
Simon Glass
30495bff35 image: Add a name for invalid types
At present the name is NULL, which prevents qsort() fromp being used. Use
the name "invalid" instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:29 -04:00
Simon Glass
56d7ab7476 image: Create a table of information for each category
Add a table that contains the category name, the number of items in each
category and a pointer to the table of items. This will allow us to use
generic code to deal with the categories.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:29 -04:00
Simon Glass
555f45d8f9 image: Convert the IH_... values to enums
We need to know the number of values of each category (architecture,
compression, OS and image type). To make this value easier to maintain,
convert all values to enums. The count is then automatic.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:28 -04:00
Simon Glass
3a45f38d41 image: Correct auto-fit architecture property name
The fit_write_images() function incorrectly uses the long name for the
architecture. This cannot be parsed with the FIT is read. Fix this by using
the short name instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:28 -04:00
Simon Glass
58b2247542 mkimage: Drop blank line before main()
This is not needed. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:27 -04:00
Simon Glass
63ef31b9ef mkimage: Drop premature setting of params.fit_image_type
There is no need to set params.fit_image_type while parsing the arguments.
It is set up later anyway.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:27 -04:00
Simon Glass
e324a92531 mkimage: Require a data file when auto-fit is used
When auto-fit is used, it is not valid to create a FIT without an image
file. Add a check for this to avoid a very confusing error message later
("Can't open (null): Bad address").

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:27 -04:00
Simon Glass
3c23c0feac mkimage: Explain the auto-fit imagefile special case
There is a special case in the code when auto-fit is used. Add a comment to
make it easier to understand why this is needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-07-14 18:22:26 -04:00
Simon Glass
20deaddd46 mkimage: Honour the default image type with auto-fit
The default image type is supposed to be IH_TYPE_KERNEL, as set in the
'params' variable. Honour this with auto-fit also.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:26 -04:00
Masahiro Yamada
9a387128e3 linux/io.h: add generic ioremap()/iounmap() defines
For most of architectures in U-Boot, virtual address is straight
mapped to physical address.  So, it makes sense to have generic
defines of ioremap and friends in <linux/io.h>.

All of them are just empty and will disappear at compile time, but
they will be helpful to implement drivers which are counterparts of
Linux ones.

I notice MIPS already has its own implementation, so I added a
Kconfig symbol CONFIG_HAVE_ARCH_IOREMAP which MIPS (and maybe
Sandbox as well) can select.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2016-07-14 18:22:26 -04:00
Masahiro Yamada
c74b8fcdd7 arm, nds32, sh: remove useless ioremap()/iounmap() defines
These defines are valid only when iomem_valid_addr is defined,
but I do not see such defines anywhere.  Remove.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-07-14 18:22:25 -04:00
Masahiro Yamada
95ebc253e6 types.h: move and redefine resource_size_t
Currently, this is only defined in arch/arm/include/asm/types.h,
so move it to include/linux/types.h to make it available for all
architectures.

I defined it with phys_addr_t as Linux does.  I needed to surround
the define with #ifdef __KERNEL__ ... #endif to avoid build errors
in tools building.  (Host tools should not include <linux/types.h>
in the first place, but this is already messy in U-Boot...)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-14 18:22:24 -04:00
Andreas Dannenberg
8662bea38e doc: Update info on using secure devices from TI
Adds information regarding SPL handling the loading and processing of
secured u-boot images as part of the second stage boot the SPL does.
Introduces the description of a new interface script in the TI SECDEV
Package which handles the creation and prep of secured binary images.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-14 18:22:23 -04:00
Madan Srinivas
e29878fc47 arm: am4x: add U-Boot FIT signing and SPL image post-processing
Modify the SPL build procedure for AM437x high-security (HS) device
variants to create a secure u-boot_HS.img FIT blob that contains U-Boot
and DTB artifacts signed (and optionally encrypted) with a TI-specific
process based on the CONFIG_TI_SECURE_DEVICE config option and the
externally-provided image signing tool.

Also populate the corresponding FIT image post processing call to be
performed during SPL runtime.

Signed-off-by: Madan Srinivas <madans@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:23 -04:00
Andreas Dannenberg
17c2987336 arm: omap5: add U-Boot FIT signing and SPL image post-processing
Modify the SPL build procedure for AM57xx and DRA7xx high-security (HS)
device variants to create a secure u-boot_HS.img FIT blob that contains
U-Boot and DTB artifacts signed with a TI-specific process based on the
CONFIG_TI_SECURE_DEVICE config option and the externally-provided image
signing tool.

Also populate the corresponding FIT image post processing call to be
performed during SPL runtime.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:22 -04:00
Daniel Allred
da74d1f341 spl: fit: add support for post-processing of images
The next stage boot loader image and the selected FDT can be post-
processed by board/platform/device-specific code, which can include
modifying the size and altering the starting source address before
copying these binary blobs to their final destination. This might be
desired to do things like strip headers or footers attached to the
images before they were packaged into the FIT, or to perform operations
such as decryption or authentication. Introduce new configuration
option CONFIG_SPL_FIT_IMAGE_POST_PROCESS to allow controlling this
feature. If enabled, a platform-specific post-process function must
be provided.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-14 18:22:21 -04:00
Andreas Dannenberg
bf9ec864f4 arm: omap-common: Update to generate secure U-Boot FIT blob
Adds commands so that when a secure device is in use and the SPL is
built to load a FIT image (with combined U-Boot binary and various
DTBs), these components that get fed into the FIT are all processed to
be signed/encrypted/etc. as per the operations performed by the
secure-binary-image.sh script of the TI SECDEV package. Furthermore,
perform minor comments cleanup to make better use of the available
space.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-14 18:22:20 -04:00
Andreas Dannenberg
1bb0a21b46 arm: omap-common: secure ROM signature verify API
Adds an API that verifies a signature attached to an image (binary
blob). This API is basically a entry to a secure ROM service provided by
the device and accessed via an SMC call, using a particular calling
convention.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:19 -04:00
Andreas Dannenberg
d86f7afda4 arm: omap-common: add secure rom call API for secure devices
Adds a generic C-callable API for making secure ROM calls on OMAP and
OMAP-compatible devices. This API provides the important function of
flushing the ROM call arguments to memory from the cache, so that the
secure world will have a coherent view of those arguments. Then is
simply calls the omap_smc_sec routine.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:19 -04:00
Daniel Allred
51d0638650 arm: omap-common: add secure smc entry
Add an interface for calling secure ROM APIs across a range of OMAP and
OMAP compatible high-security (HS) device variants. While at it, also
perform minor cleanup/alignment without any change in functionality.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:18 -04:00
Daniel Allred
ec6f61003b arm: cache: add missing dummy functions for when dcache disabled
Adds missing flush_dcache_range and invalidate_dcache_range dummy
(empty) placeholder functions to the #else portion of the #ifndef
CONFIG_SYS_DCACHE_OFF, where full implementations of these functions
are defined.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-07-14 18:22:17 -04:00
Masahiro Yamada
6b6024eadb arm64: add better and more generic spin-table support
There are two enable methods supported by ARM64 Linux; psci and
spin-table.  The latter is simpler and helpful for quick SoC bring
up.  My main motivation for this patch is to improve the spin-table
support, which allows us to boot an ARMv8 system without the ARM
Trusted Firmware.

Currently, we have multi-entry code in arch/arm/cpu/armv8/start.S
and the spin-table is supported in a really ad-hoc way, and I see
some problems:

  - We must hard-code CPU_RELEASE_ADDR so that it matches the
    "cpu-release-addr" property in the DT that comes from the
    kernel tree.

  - The Documentation/arm64/booting.txt in Linux requires that
    the release address must be zero-initialized, but it is not
    cared by the common code in U-Boot.  We must do it in a board
    function.

  - There is no systematic way to protect the spin-table code from
    the kernel.  We are supposed to do it in a board specific manner,
    but it is difficult to predict where the spin-table code will be
    located after the relocation.  So, it also makes difficult to
    hard-code /memreserve/ in the DT of the kernel.

So, here is a patch to solve those problems; the DT is run-time
modified to reserve the spin-table code (+ cpu-release-addr).
Also, the "cpu-release-addr" property is set to an appropriate
address after the relocation, which means we no longer need the
hard-coded CPU_RELEASE_ADDR.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-07-14 18:22:16 -04:00
Tom Rini
3a592a1349 Revert "armv8: Enable CPUECTLR.SMPEN for coherency"
Upon further review this breaks most other platforms as we need to check
what core we're running on before touching it at all.

This reverts commit d73718f323.

Signed-off-by: Tom Rini <trini@konsulko.com>
2016-07-14 17:36:18 -04:00
Tom Rini
b8e599746c Merge branch 'master' of git://git.denx.de/u-boot-x86 2016-07-12 08:15:17 -04:00
Simon Glass
9532fe3b40 x86: link: Correct a failure in DRAM init
With the change to set up pinctrl after relocation, link fails to boot. Add
a special case in the link code to handle this.

Fixes: d8906c1f (x86: Probe pinctrl driver in cpu_init_r())

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-07-12 13:59:45 +08:00
George McCollister
215099a522 x86: Add Advantech SOM-DB5800/SOM-6867 support
Add support for Advantech SOM-DB5800 with the SOM-6867 installed.
This is very similar to conga-qeval20-qa3-e3845 in that there is a
reference carrier board (SOM-DB5800) with a Baytrail based SoM (SOM-6867)
installed.

Currently supported:
 - 2x UART (From ITE EC on SOM-6867) routed to COM3/4 connectors on
   SOM-DB5800.
 - 4x USB 2.0 (EHCI)
 - Video
 - SATA
 - Ethernet
 - PCIe
 - Realtek ALC892 HD Audio
   Pad configuration for HDA_RSTB, HDA_SYNC, HDA_CLK, HDA_SDO
   HDA_SDI0 is set in DT to enable HD Audio codec.
   Pin defaults for codec pin complexs are not changed.

Not supported:
 - Winbond Super I/O (Must be disabled with jumpers on SOM-DB8500)
 - USB 3.0 (XHCI)
 - TPM

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-07-12 13:46:01 +08:00
Bin Meng
3ff11aaa50 x86: baytrail: acpi: Hide internal UART per GNVS setting
If global NVS says internal UART is not enabled, hide it in the ASL
code so that OS won't see it.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
79c2c257cf x86: acpi: Pack global NVS into ACPI table
Now that platform-specific ACPI global NVS is added, pack it into
ACPI table and get its address fixed up.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
cf7108b320 x86: quark: Introduce ACPI global NVS
This introduces quark-specific ACPI global NVS structure, defined in
both C header file and ASL file.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
2047390abc x86: baytrail: Introduce ACPI global NVS
This introduces baytrail-specific ACPI global NVS structure, defined in
both C header file and ASL file.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Stefan Roese
f2a751beba x86: conga-qeval20-qa3: Add support for internal UART
This patch adds support to enable and use the internal BayTrail UART
instead of the one integrated in the Super IO Winbond chip. For this,
a 2nd defconfig file is added.

This is useful for tests done for the congatec SoM used on baseboards
without such a Super IO chip.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
d9703a0725 x86: fsp: Wrap setup_internal_uart() call with CONFIG_INTERNAL_UART
For any FSP-enabled boards that want to enable debug UART support,
setup_internal_uart() will be called, but this API is only available
on BayTrail platform. Change to wrap it with CONFIG_INTERNAL_UART.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
377656b2cc x86: baytrail: Introduce a Kconfig option for the internal UART
There are quite a number of BayTrail boards that uses an external
SuperIO chipset to provide the legacy UART. For such cases, it's
better to have a Kconfig option to enable the internal UART.

So far BayleyBay and MinnowMax boards are using internal UART as
the U-Boot console, enable this on these two boards.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
f698baa9d1 pci: Add board_ prefix to should_load_oprom() and make it weak
For consistency with board_should_run_oprom(), do the same to
should_load_oprom(). Board support codes can provide this one
to override the default weak one.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
c0aea6ba8b pci: Make load_oprom and run_oprom independent
At present should_load_oprom() calls board_should_run_oprom() to
determine whether oprom should be loaded. But sometimes we just
want to load oprom without running. Make them independent.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Bin Meng
b45dd66225 pci: Remove CONFIG_ALWAYS_LOAD_OPROM
This option is defined at nowhere. Remove it.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-12 13:46:01 +08:00
Tom Rini
bff97dde8c Merge branch 'master' of git://git.denx.de/u-boot-spi 2016-07-11 18:50:29 -04:00
Bin Meng
94fbd3e37d tools: patman: Handle missing 'END' in non-last commit of a series
The following python error:

Traceback (most recent call last):
  File "./tools/patman/patman", line 144, in <module>
    series = patchstream.FixPatches(series, args)
  File "./tools/patman/patchstream.py", line 477, in FixPatches
    commit = series.commits[count]
IndexError: list index out of range

is seen when:

- 'END' is missing in those tags
- those tags are put in the last part in a commit message
- the commit is not the last commit of the series

Add testing logic to see if a new commit starts.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-07-11 14:06:44 -06:00
Bin Meng
57b6b190a8 tools: patman: Handle missing blank line for 'Series-changes'
'Series-changes' uses blank line to indicate its end. If that is
missing, series internal state variable 'in_change' may be wrong.
Correct its state.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-07-11 14:06:44 -06:00
Bin Meng
0d57718775 tools: patman: Generate cover letter correctly when 'END' is missing
If 'END' is missing in a 'Cover-letter' section, and that section
happens to show up at the very end of the commit message, and the
commit is the last commit of the series, patman fails to generate
cover letter for us. Handle this in CloseCommit of patchstream.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-07-11 14:06:44 -06:00
Bin Meng
13b98d95ba tools: patman: Handle tag sections without an 'END'
'Cover-letter', 'Series-notes' and 'Commit-notes' tags require an
'END' to be put at the end of its section. If we forget to put an
'END' in those sections, and these sections are followed by another
patman tag, patman generates incorrect patches. This adds codes to
handle such scenario.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-07-11 14:06:44 -06:00
Bin Meng
e7df218c3b tools: patman: Use cover_match for 'Cover-letter'
Like other patman tags, use a new variable cover_match to indicate
a match for 'Cover-letter'.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-07-11 14:06:44 -06:00