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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>
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.
Signed-off-by: Wolfgang Denk <wd@denx.de>
The mx31pdk can boot only from NAND and the target was
already updated in boards.cfg. mx31pdk_nand is obsolete
and is dropped.
Signed-off-by: Stefano Babic <sbabic@denx.de>
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 f3c149d6c6
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>
This patch fixes the build breakage for the davinci_sonata board.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Sergey Kubushyn <ksi@koi8.net>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
This patch fixes the build breakage for the davinci_schmoogie board.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Sergey Kubushyn <ksi@koi8.net>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
MACH_TYPE_FARADAY was dropped from mach-types.h. Add it back to
board config file.
Signed-off-by: Yan-Pai Chen <ypchen@faraday-tech.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
There is no need to have such a function twice.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Dirk Behme <dirk.behme@googlemail.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Change my old email address which is no longer valid.
Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Add the 1920x1080 and 1280x720 resolution support.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Acked-by: Timur Tabi <timur@freescale.com>
CC: Anatolij Gustschin <agust@denx.de>
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>
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>
The new implementation is about twice as fast as the old. This is from
glibc-2.14, sysdeps/i386/memset.c.
Signed-off-by: Gabe Black <gabeblack@chromium.org>
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>
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>
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
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
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.
Signed-off-by: Wolfgang Denk <wd@denx.de>
The mx31pdk can boot only from NAND and the target was
already updated in boards.cfg. mx31pdk_nand is obsolete
and is dropped.
Signed-off-by: Stefano Babic <sbabic@denx.de>
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 f3c149d6c6
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>
This patch fixes the build breakage for the davinci_sonata board.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Sergey Kubushyn <ksi@koi8.net>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
This patch fixes the build breakage for the davinci_schmoogie board.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Sergey Kubushyn <ksi@koi8.net>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
MACH_TYPE_FARADAY was dropped from mach-types.h. Add it back to
board config file.
Signed-off-by: Yan-Pai Chen <ypchen@faraday-tech.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
There is no need to have such a function twice.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Dirk Behme <dirk.behme@googlemail.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Change my old email address which is no longer valid.
Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
* '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
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>
cmd_nvedit.c: In function 'do_env_grep':
cmd_nvedit.c:182:3: warning: suggest parentheses around assignment used as truth value
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Fix:
x86emu/ops2.c: In function 'x86emuOp2_set_byte':
x86emu/ops2.c:171:11: warning: variable 'name' set but not used [-Wunused-but-set-variable]
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This reverts commit 02f3029f18.
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>
sdhci_readw does not work for host version read in Armada100 series
SoCs. This patch fix this issue by making a sdhci_readl call to get host
version.
Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
Kumar Gala
Wolfgang Denk
Stefano Babic
Igor Grinberg
Christian Riesch
Yan-Pai Chen
Alexander Holler
Stelian Pop
Jerry Huang
Marek Vasut
Gabe Black
Gabe Black
Graeme Russ
Stephan Linz
Michael Jones
Mike Frysinger
Macpaul Lin
Ajay Bhargav