Wolfgang Denk [Thu, 1 Dec 2011 22:58:11 +0000 (23:58 +0100)]
Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx
* 'master' of git://git.denx.de/u-boot-mpc85xx:
mpc85xx: support for Freescale COM Express P2020
arch/powerpc/cpu/mpc8xxx/ddr/interactive.c: Fix GCC 4.6 build warning
mpc85xx: support board-specific reset function
powerpc/85xx: verify the localbus device tree address before booting the OS
mpc8xxx: update module_type values from JEDEC DDR3 SPD Specification
powerpc/p3060qds: Add board related support for P3060QDS platform
powerpc/85xx: clean up and document the QE/FMAN microcode macros
powerpc/85xx: always implement the work-around for Erratum SATA_A001
powerpc/85xx: CONFIG_FSL_SATA_V2 should be defined in config_mpc85xx.h
powerpc/85xx: Add workaround for erratum A-003474
powerpc/85xx: fixup flexcan device tree clock-frequency
powerpc/85xx: Add workaround for erratum CPU-A003999
Ira W. Snyder [Wed, 23 Nov 2011 16:25:58 +0000 (08:25 -0800)]
mpc85xx: support for Freescale COM Express P2020
This adds support for the Freescale COM Express P2020 board. This board
is similar to the P1_P2_RDB, but has some extra (as well as missing)
peripherals.
Unlike all other mpc85xx boards, it uses a watchdog timeout to reset.
Using the HRESET_REQ register does not work.
This board has no NOR flash, and can only be booted via SD or SPI. This
procedure is documented in Freescale Document Number AN3659 "Booting
from On-Chip ROM (eSDHC or eSPI)." Some alternative documentation is
provided in Freescale Document Number P2020RM "P2020 QorIQ Integrated
Processor Reference Manual" (section 4.5).
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Ira W. Snyder [Mon, 21 Nov 2011 21:20:32 +0000 (13:20 -0800)]
mpc85xx: support board-specific reset function
This is useful for boards which cannot be reset in the usual way for the
85xx CPU. An example is a board which can only be reset by a hardware
watchdog.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Timur Tabi [Wed, 16 Nov 2011 19:28:34 +0000 (13:28 -0600)]
powerpc/85xx: verify the localbus device tree address before booting the OS
The localbus controller node in the device tree is typically a root node,
even though the controller is part of CCSR. If we were to put the lbc
node under the SOC node, then the 'ranges' property in the lbc node would
translate through the 'ranges' property of the parent SOC node, and we
don't want that.
Since the lbc is a separate node, it's possible for the 'reg' property to
be wrong. This happened with the original version of p1022ds.dts, which
used a 32-bit value in the 'reg' address, instead of a 36-bit address.
Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Ira W. Snyder [Mon, 21 Nov 2011 21:20:33 +0000 (13:20 -0800)]
mpc8xxx: update module_type values from JEDEC DDR3 SPD Specification
Newer JEDEC DDR3 SPD Specifications define several additional values for
the DDR3 module_type field which were undefined when this code was
written. Update the code to handle the newer module types.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Cc: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Shengzhou Liu [Tue, 22 Nov 2011 08:51:13 +0000 (16:51 +0800)]
powerpc/p3060qds: Add board related support for P3060QDS platform
The P3060QDS is a Freescale reference board for the six-core P3060 SOC.
P3060QDS Board Overview:
Memory subsystem:
- 2G Bytes unbuffered DDR3 SDRAM SO-DIMM(64bit bus)
- 128M Bytes NOR flash single-chip memory
- 16M Bytes SPI flash
- 8K Bytes AT24C64 I2C EEPROM for RCW
Ethernet:
- Eight Ethernet controllers (4x1G + 4x1G/2.5G)
- Three VSC8641 PHYs on board (2xRGMII + 1xMII)
- Suport multiple Vitesse VSC8234 SGMII Cards in Slot1/2/3
PCIe: Two PCI Express 2.0 controllers/ports
USB: Two USB2.0, USB1(TYPE-A) and USB2(TYPE-AB) on board
I2C: Four I2C controllers
UART: Supports two dUARTs up to 115200 bps for console
RapidIO: Two RapidIO, sRIO1 and sRIO2
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Timur Tabi [Tue, 22 Nov 2011 15:21:25 +0000 (09:21 -0600)]
powerpc/85xx: clean up and document the QE/FMAN microcode macros
Several macros are used to identify and locate the microcode binary image
that U-boot needs to upload to the QE or Fman. Both the QE and the Fman
use the QE Firmware binary format to package their respective microcode data,
which is why the same macros are used for both. A given SOC will only have
a QE or an Fman, so this is safe.
Unfortunately, the current macro definition and usage has inconsistencies.
For example, CONFIG_SYS_FMAN_FW_ADDR was used to define the address of Fman
firmware in NOR flash, but CONFIG_SYS_QE_FW_IN_NAND contains the address
of NAND. There's no way to know by looking at a variable how it's supposed
to be used.
In the future, the code which uploads QE firmware and Fman firmware will
be merged.
Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Timur Tabi [Mon, 21 Nov 2011 23:10:23 +0000 (17:10 -0600)]
powerpc/85xx: always implement the work-around for Erratum SATA_A001
On the P1022/P1013, the work-around for erratum SATA_A001 was implemented
only if U-Boot initializes SATA, but SATA is not initialized by default. So
move the work-around to the CPU initialization function, so that it's always
executed on the SOCs that need it.
Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Timur Tabi [Mon, 21 Nov 2011 23:10:22 +0000 (17:10 -0600)]
powerpc/85xx: CONFIG_FSL_SATA_V2 should be defined in config_mpc85xx.h
Macro CONFIG_FSL_SATA_V2 is defined if the SOC has a V2 Freescale SATA
controller, so it should be defined in config_mpc85xx.h instead of the various
board header files. So now CONFIG_FSL_SATA_V2 is always defined on the P1013,
P1022, P2041, P3041, P5010, and P5020. It was already defined for the
P1010 and P1014.
Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
York Sun [Sun, 20 Nov 2011 18:01:35 +0000 (10:01 -0800)]
powerpc/85xx: Add workaround for erratum A-003474
Erratum A-003474: Internal DDR calibration circuit is not supported
Impact:
Experience shows no significant benefit to device operation with
auto-calibration enabled versus it disabled. To ensure consistent timing
results, Freescale recommends this feature be disabled in future customer
products. There should be no impact to parts that are already operating
in the field.
Workaround:
Prior to setting DDR_SDRAM_CFG[MEM_EN]=1, do the following:
1. Write a value of 0x0000_0015 to the register at offset
CCSRBAR + DDR OFFSET + 0xf30
2. Write a value of 0x2400_0000 to the register at offset
CCSRBAR + DDR OFFSET + 0xf54
Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Jia Hongtao [Tue, 15 Nov 2011 07:04:11 +0000 (15:04 +0800)]
powerpc/85xx: fixup flexcan device tree clock-frequency
Make the fixup matchable with dts and kernel. Update the compatible from
"fsl,flexcan-v1.0" to "fsl,p1010-flexcan" and Change the "clock-freq"
property to "clock-frequency". We also change flexcan frequency from
CCB-clock to CCB-clock/2 according to P1010 spec.
We now keep the old interfaces to make previous kernel work. They should
be removed in the future.
Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Kumar Gala [Tue, 22 Nov 2011 12:51:15 +0000 (06:51 -0600)]
powerpc/85xx: Add workaround for erratum CPU-A003999
Erratum A-003999: Running Floating Point instructions requires special
initialization.
Impact:
Floating point arithmetic operations may result in an incorrect value.
Workaround:
Perform a read modify write to set bit 7 to a 1 in SPR 977 before
executing any floating point arithmetic operation. This bit can be set
when setting MSR[FP], and can be cleared when clearing MSR[FP].
Alternatively, the bit can be set once at boot time, and never cleared.
There will be no performance degradation due to setting this bit.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Gabe Black [Mon, 14 Nov 2011 20:18:12 +0000 (20:18 +0000)]
x86: Fix some bugs in the i8402 driver when no controller is present
If no controller is present, the i8402 driver should return immediately and
not attempt to operate on the missing hardware.
In kbd_input_empty, the status register is checked every millisecond to see
whether the input buffer is empty, up to a timeout which is tracked by
decrimenting a counter each time the check is performed. The decrement is
performed with a postfix -- operator, and the value of the counter is
checked in place. That means that when the counter reaches zero and the
loop terminates, it will actually be decrimented one more time and become
-1. That value is returned as the return value of the function. That would
give the right answer if it wasn't for that extra decrement because a
timeout would indicate that the buffer never became empty.
This change fixes both of those bugs.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Gabe Black [Wed, 16 Nov 2011 23:01:37 +0000 (23:01 +0000)]
x86: Wrap small helper functions from libgcc to avoid an ABI mismatch
When gcc compiles some 64 bit operations on a 32 bit machine, it generates
calls to small functions instead of instructions which do the job directly.
Those functions are defined in libgcc and transparently provide whatever
functionality was necessary. Unfortunately, u-boot can be built with a
non-standard ABI when libgcc isn't. More specifically, u-boot uses
-mregparm. When the u-boot and libgcc are linked together, very confusing
bugs can crop up, for instance seemingly normal integer division or modulus
getting the wrong answer or even raising a spurious divide by zero
exception.
This change borrows (steals) a technique and some code from coreboot which
solves this problem by creating wrappers which translate the calling
convention when calling the functions in libgcc. Unfortunately that means
that these instructions which had already been turned into functions have
even more overhead, but more importantly it makes them work properly.
To find all of the functions that needed wrapping, u-boot was compiled
without linking in libgcc. All the symbols the linker complained were
undefined were presumed to be the symbols that are needed from libgcc.
These were a subset of the symbols covered by the coreboot code, so it was
used unmodified.
To prevent symbols which are provided by libgcc but not currently wrapped
(or even known about) from being silently linked against by code generated
by libgcc, a new copy of libgcc is created where all the symbols are
prefixed with __normal_. Without being purposefully wrapped, these symbols
will cause linker errors instead of silently introducing very subtle,
confusing bugs.
Another approach would be to whitelist symbols from libgcc and strip out
all the others. The problem with this approach is that it requires the
white listed symbols to be specified three times, once for objcopy, once so
the linker inserts the wrapped, and once to generate the wrapper itself,
while this implementation needs it to be listed only twice. There isn't
much tangible difference in what each approach produces, so this one was
preferred.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Gabe Black [Sat, 12 Nov 2011 16:34:48 +0000 (16:34 +0000)]
x86: Don't relocate symbols which point to things that aren't relocated
This change adds an upper bound for symbols which are fixed up after u-boot
is relocated into RAM. This way portions that are left at their original
location can be referred to without having to manually fix up any pointers.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Gabe Black [Sat, 12 Nov 2011 16:31:18 +0000 (16:31 +0000)]
x86: Fix how the location of the realmode and bios blobs are calculated
There are two blobs embedded into the u-boot image which are linked to run
at an address which is different from where they actually end up in the
ROM, one called "realmode" and one called "bios". There are realmode_setup
and bios_setup functions which prepare those blobs by copying them into the
location they're supposed to run from, among other things.
During u-boot relocation from ROM to RAM, the text and a few data segments
are copied over. The realmode and bios sections are not copied, and so the
only place they can be read from is their original location in the ROM.
Looking specifically at the bios blob, there are symbols defined in the
linker script called __bios_start and __bios_size which are defined to be
the start and size of the blob in the ROM.
In the bios_setup function, there seem to be two mistakes happening. First,
the offset from ROM to RAM is being added to __bios_start which implies that
this code expects to use the copy moved to RAM. No such copy is made, so
that's wrong. More subtly, when u-boot relocates itself, it goes through
all of the relocations stored in .rel.dyn and fixes them up. This has the
effect of transforming the __bios_start reference in bios_setup so that it
refers to the version in RAM (if one existed) instead of the one in ROM. To
correct for that, the offset actually needs to be subtracted out again to
translate the address back into the ROM.
The net effect is that for both blobs, a + needs to be changed to a -.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Graeme Russ [Tue, 8 Nov 2011 02:33:19 +0000 (02:33 +0000)]
x86: Add multiboot header
By adding a multiboot header, U-Boot can be loaded by GRUB2. Using GRUB2 to
bootstrap U-Boot is useful for using an existing BIOS to get an initial
U-Boot port up and running before implementing the low-level reset vector
code, SDRAM init, etc. and overwriting the BIOS
Wolfgang Denk [Mon, 28 Nov 2011 19:19:41 +0000 (20:19 +0100)]
menu.c: use puts() instead of printf() where possible
common/menu.c used printf() in a number of places to print user
provided, constant strings (like the "title" string). printf() is
dangerous here for example in case the user unwittingly embeds some
'%' caracters that printf() would interpret as formatting and then
pick up random arguments. Use puts() instead.
We also omit the trailing ':' in the title line - if a user wants
this, he can provide it as part of the title string.
Igor Grinberg [Sat, 26 Nov 2011 23:06:46 +0000 (23:06 +0000)]
dataflash: fix parameters order in write_dataflash()
Fix parameters order in write_dataflash() function extern declaration in
the header file.
Parameters order, as in function definition, should be:
addr_dest, addr_src, size.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
This patch replaces the HAWKBOARD_KICK{0,1}_UNLOCK defines by
DV_SYSCFG_KICK{0,1}_UNLOCK.
The kick register values are not hawkboard specific but may be used
for all davinci boards. In commit f3c149d6c6e5ba8dd72baa86fe527837e4fb0e9a
new defines for these values wer introduced.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at> Cc: Syed Mohammed Khasim <sm.khasim@gmail.com> Cc: Sughosh Ganu <urwithsughosh@gmail.com> Cc: Sandeep Paulraj <s-paulraj@ti.com>
Wolfgang Denk [Sun, 27 Nov 2011 15:03:21 +0000 (16:03 +0100)]
Merge branch 'master' of git://git.denx.de/u-boot-mmc
* 'master' of git://git.denx.de/u-boot-mmc:
Revert "mmc: retry the cmd8 to meet 74 clocks requirement in the spec"
mmc: mv_sdhci: Fix host version read for Armada100
Stephan Linz [Thu, 24 Nov 2011 12:32:52 +0000 (12:32 +0000)]
microblaze: usable uart16550 for big endian systems
As a result of the commit 6833260 the uart16550 driver
is broken for Microblaze big endian systems, because of
the missing 3 byte offset. Other than as described, not
all U-Boot BSP will treat properly the 3 byte offset.
This why prefer to mask out the 3 byte offset in general
and setup correct _REG_SIZE value depending on edianess.
Signed-off-by: Stephan Linz <linz@li-pro.net> Tested-by: Michal Simek <monstr@monstr.eu>
This patch add 3 times retry to CMD8 because the Marvell mmc controller
doesn't obey the power ramp up process in the SD specification 6.4.1.
(Please refer to figure 6.1 and 6.2 in the specification.)
The CMD0 should be send after power ramp up has been finished.
However, the Marvell mmc contorller must do power ramp up after the
first CMD0 command has been send.
This patch also affect existing platforms like Nokia N900 and other
platforms.
Signed-off-by: Macpaul Lin <macpaul@andestech.com> Acked-by: Lei Wen <leiwen@marvell.com> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
Fix:
dnet.c: In function 'dnet_send':
dnet.c:136:9: warning: variable 'len' set but not used
[-Wunused-but-set-variable]
dnet.c: In function 'dnet_set_hwaddr':
dnet.c:209:2: warning: dereferencing type-punned pointer will
break strict-aliasing rules [-Wstrict-aliasing]
dnet.c:209:2: warning: dereferencing type-punned pointer will
break strict-aliasing rules [-Wstrict-aliasing]
dnet.c:209:2: warning: dereferencing type-punned pointer will
break strict-aliasing rules [-Wstrict-aliasing]
dnet.c:209:2: warning: dereferencing type-punned pointer will
break strict-aliasing rules [-Wstrict-aliasing]
Fix:
flash.c: In function 'flash_erase':
flash.c:223:6: warning: variable 'flag' set but not used
[-Wunused-but-set-variable]
flash.c: In function 'write_data':
flash.c:392:6: warning: variable 'flag' set but not used
[-Wunused-but-set-variable]
Fix:
syncflash.c: In function 'SF_SR':
syncflash.c:60:10: warning: variable 'tmp1' set but not used
[-Wunused-but-set-variable]
syncflash.c: In function 'SF_PrechargeAll':
syncflash.c:96:6: warning: variable 'tmp' set but not used
[-Wunused-but-set-variable]
mx1ads.c: In function 'board_early_init_f':
mx1ads.c:83:24: warning: variable 'tmp' set but not used
[-Wunused-but-set-variable]
syncflash.c: In function 'SF_Erase':
syncflash.c:112:6: warning: variable 'tmp' set but not used
[-Wunused-but-set-variable]
syncflash.c: In function 'flash_init':
syncflash.c:155:6: warning: variable 'tmp' set but not used
[-Wunused-but-set-variable]
Fix:
flash.c: In function 'flash_erase':
flash.c:223:6: warning: variable 'flag' set but not used [-Wunused-but-set-variable]
flash.c: In function 'write_data':
flash.c:392:6: warning: variable 'flag' set but not used [-Wunused-but-set-variable]
Fix:
cpuinfo.c: In function 'print_cpuinfo':
cpuinfo.c:155:6: warning: variable 'system_serial_low' set but not used
[-Wunused-but-set-variable]
cpuinfo.c:154:6: warning: variable 'system_serial_high' set but not used
[-Wunused-but-set-variable]
Fix:
lan91c96.c: In function 'dump_memory_info':
lan91c96.c:157:7: warning: variable 'mem_info' set but not used
[-Wunused-but-set-variable]
lan91c96.c: In function 'smc_send_packet':
lan91c96.c:320:16: warning: variable 'ioaddr' set but not used
[-Wunused-but-set-variable]
Fix clash between IH_ARCH_NDS32 and IH_ARCH_SANDBOX
NDS32 and SANDBOX architecture were sharing the same IH_ARCH number
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Acked-by: Macpaul Lin <macpaul@andestech.com> Acked-by: Marek Vasut <marek.vasut@gmail.com>
Igor Grinberg [Mon, 7 Nov 2011 01:14:06 +0000 (01:14 +0000)]
env: clean env_embedded.c checkpatch and code style
Cleanup the env_embedded.c checkpatch warnings, errors and coding style.
There is one error left though:
ERROR: Macros with multiple statements should be enclosed in a do - while loop
#79: FILE: u-boot/common/env_embedded.c:79:
+#define GEN_ABS(name, value) \
+ asm(".globl " GEN_SYMNAME(name)); \
+ GEN_SET_VALUE(name, value)
total: 1 errors, 0 warnings, 213 lines checked
We cannot enclose that statement in a do - while loop,
because these are a global assembly declarations.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Igor Grinberg [Mon, 7 Nov 2011 01:14:05 +0000 (01:14 +0000)]
env: clean env_mmc.c checkpatch and code style
Cleanup the env_mmc.c checkpatch warnings, errors and coding style.
Simplify env_relocate_spec() function implementation.
Also mark internal functions as static.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Igor Grinberg [Mon, 7 Nov 2011 01:14:04 +0000 (01:14 +0000)]
env: clean env_nvram.c checkpatch and code style
Cleanup the env_nvram.c checkpatch warnings, errors and coding style.
There are 2 wanring left about the extern used in c file:
WARNING: externs should be avoided in .c files
#53: FILE: env_nvram.c:53:
+extern void *nvram_read(void *dest, const long src, size_t count);
WARNING: externs should be avoided in .c files
#54: FILE: env_nvram.c:54:
+extern void nvram_write(long dest, const void *src, size_t count);
total: 0 errors, 2 warnings, 138 lines checked
There is no common nvram header file to use instead of the externs.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Igor Grinberg [Mon, 7 Nov 2011 01:13:59 +0000 (01:13 +0000)]
env: clean cmd_nvedit.c checkpatch and code style
Cleanup the cmd_nvedit.c checkpatch warnings, errors and coding style.
There are 10 wanrings left about the simple_strtoul() function:
WARNING: simple_strtoul is obsolete, use kstrtoul instead
#359: FILE: cmd_nvedit.c:359:
+ load_addr = simple_strtoul(argv[2], NULL, 16);
...
total: 0 errors, 10 warnings, 1043 lines checked
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Simon Glass [Fri, 4 Nov 2011 06:42:35 +0000 (06:42 +0000)]
Define uintptr_t as long int to simplify printf() format strings
If uintptr_t can be either an unsigned int or an unsigned long int, it is
tricky to use it in a printf() format string. This changes it to
unsigned long int consistently. This should do the right thing on both
32-bit and 64-bit architectures.
Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Mike Frysinger <vapier@gentoo.org>
David Wagner [Mon, 26 Sep 2011 03:26:34 +0000 (03:26 +0000)]
new tool mkenvimage: generates an env image from an arbitrary config file
This tool takes a key=value configuration file (same as would a `printenv' show)
and generates the corresponding environment image, ready to be flashed.
use case: flash the environment with an external tool
Signed-off-by: David Wagner <david.wagner@free-electrons.com>
Acked-by; Mike Frysinger <vapier@gentoo.org> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Simon Glass <sjg@chromium.org> Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Wolfgang Grandegger <wg@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Simon Glass <sjg@chromium.org>
Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Wolfgang Grandegger <wg@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Simon Glass <sjg@chromium.org>
Wolfgang Denk [Mon, 21 Nov 2011 21:04:17 +0000 (22:04 +0100)]
Merge branch 'master' of git://git.denx.de/u-boot-blackfin
* 'master' of git://git.denx.de/u-boot-blackfin:
Blackfin: cache result of cpp check
Blackfin: traps: fix up printf warnings from debug
Blackfin: drop now unused local variable
projects / u-boot / log