File arch/arm/lib/bss.c was initially defined for BSS only,
but is now going to also contain definitions for other
section-boundary-related symbols, so rename it for better
accuracy.
Also, remove useless 'used' attributes.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Tested-by: Lubomir Popov <lpopov@mm-sol.com>
Tested-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Discard all .dynsym sections from linker scripts
Remove all __dynsym_start definitions from linker scripts
Remove all __dynsym_start references from the codebase
Note: this touches include/asm-generic/sections.h, which
is not ARM-specific, but actual uses of __dynsym_start
are only in ARM, so this patch can safely go through
the ARM repository.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Tested-by: Lubomir Popov <lpopov@mm-sol.com>
Tested-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
The omap2420H4 was the only mainline omap24xx board. Prior to being
fixed by Jon Hunter in time for v2013.04 it had been functionally broken
for a very long time. Remove this board as there's not been interest in
it in U-Boot for quite a long time.
Signed-off-by: Tom Rini <trini@ti.com>
Replace all relocate_code routines from ARM start.S files
with a single instance in file arch/arm/lib/relocate.S.
For PXA, this requires moving the dcache unlocking code
from within relocate_code into c_runtime_cpu_setup.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Tested-by: Simon Glass <sjg@chromium.org>
Use the common FDT setup function that is now available in image. Move
the FDT-specific code to a new bootm-fdt.c and remove unused headers
from bootm.c.
Signed-off-by: Simon Glass <sjg@chromium.org>
With fewer #ifdefs the code is more readable and more of the code is
compiled for all boards. Add defines in the header file to control
what features are enabled, and then use if() instead of #ifdef.
Signed-off-by: Simon Glass <sjg@chromium.org>
Delete all occurrences of hang() and provide a generic function.
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
[trini: Modify check around puts() in hang.c slightly]
Signed-off-by: Tom Rini <trini@ti.com>
Commit e05e5de7fa made the 2 1st parameters of
ARM's relocate_code() useless since it moved the code handling them to crt0.S.
So, drop these parameters.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
The purpose of .globl is to export symbols for ld, not to declare external
symbols.
By the way, use the ENTRY() and ENDPROC() macros to define functions rather than
using .global directly.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
The 'XN' execute never bit is set in the pagetables. This will
prevent speculative prefetches to non executable regions. But the
domain permissions are set as master in the DACR register.
So the pagetable attribute for 'XN' is not effective. Change the
permissions to client.
This fixes lot of speculative prefetch aborts seen on OMAP5
secure devices.
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Tested-by: Vincent Stehle <v-stehle@ti.com>
Cc: Vincent Stehle <v-stehle@ti.com>
Cc: Tom Rini <trini@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Introduce a weak version of dram_bank_setup function
to allow a platform specific function.
This is used in the subsequent patch to setup dram region
without 'XN' attribute in order to enable the region
under client permissions.
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Cc: Vincent Stehle <v-stehle@ti.com>
Cc: Tom Rini <trini@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Albert's rework of the linker scripts conflicted with Simon's making
everyone use __bss_end. We also had a minor conflict over
README.scrapyard being added to in mainline and enhanced in
u-boot-arm/master with proper formatting.
Conflicts:
arch/arm/cpu/ixp/u-boot.lds
arch/arm/cpu/u-boot.lds
arch/arm/lib/Makefile
board/actux1/u-boot.lds
board/actux2/u-boot.lds
board/actux3/u-boot.lds
board/dvlhost/u-boot.lds
board/freescale/mx31ads/u-boot.lds
doc/README.scrapyard
include/configs/tegra-common.h
Build tested for all of ARM and run-time tested on am335x_evm.
Signed-off-by: Tom Rini <trini@ti.com>
Note this is a tree-wide change affecting multiple architectures.
At present we use __bss_start, but mostly __bss_end__. This seems
inconsistent and in a number of places __bss_end is used instead.
Change to use __bss_end for the BSS end symbol throughout U-Boot. This
makes it possible to use the asm-generic/sections.h file on all
archs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Turn __bss_start and __bss_end__ from linker-generated
to compiler-generated symbols, causing relocations for
these symbols to change type, from R_ARM_ABS32 to
R_ARM_RELATIVE.
This should have no functional impact, as it affects
references to __bss_start and __bss_end__ only before
relocation, and no such references are done.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
and, if including libfdt.h which includes libfdt_env.h in
the correct order, don't include fdt.h before libfdt.h.
this is needed to get the fdt type definitions set from
the project environment before fdt.h uses them.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Jerry Van Baren <gvb.uboot@gmail.com>
Move these fields into arch_global_data and tidy up.
Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Address tlb_size in this patch as well]
Signed-off-by: Tom Rini <trini@ti.com>
No one expects to end up in a delayed environment if
CONFIG_DELAY_ENVIRONMENT isn't defined.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Allen Martin <amartin@nvidia.com>
The two modified lines were indented with spaces.
They are now indented with tabs.
Signed-off-by: Taylor Hutt <thutt@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
The timer may be inited in arch_cpu_init() so it is not safe to make a
bootstage mark before this is called. Arrange the code to fix this.
Note: The question was raised as to why we don't keep all archs in sync.
PowerPC doesn't have specific bootstage markers at present (although it
does use boot progress). I hope that the generic board series will solve
this problem in general, but in the meantime this is a real problem, and
only in ARM.
We now get a correct time for board_init_f:
Timer summary in microseconds:
Mark Elapsed Stage
0 0 reset
100,000 100,000 spl_start
848,530 748,530 board_init_f
907,301 58,771 board_init_r
910,478 3,177 board_init
Signed-off-by: Simon Glass <sjg@chromium.org>
SPL u-boot may call do_reset() which depends on interrupts.o and reset.o.
So make them also appear in SPL.
Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This option displays board info after stdio is running, so that it will
appear on the LCD. If it is displayed earlier, the board info will appear
on the serial console but not on the LCD.
Here follows a blow-by-blow description.
1a. Without CONFIG_DISPLAY_BOARDINFO_LATE, on serial:
U-Boot 2011.12-02550-g037e1c5-dirty (Nov 15 2012 - 14:29:42) for SMDK5250
CPU: S5PC520 @ 1700MHz
Board: Google Snow, rev 0
I2C: ready
DRAM: 2 GiB Elpida DDR3 @ 800MHz
MMC: S5P MSHC0: 0, S5P MSHC1: 1
SF: Detected W25Q32 with page size 4 KiB, total 4 MiB
*** Warning - bad CRC, using default environment
In: mkbp-keyb
Out: lcd
Err: lcd
Net: No ethernet found.
Hit any key to stop autoboot: 0
SMDK5250 #
1b. Without CONFIG_DISPLAY_BOARDINFO_LATE, on LCD (note machine info
is missing):
In: mkbp-keyb
Out: lcd
Err: lcd
Net: No ethernet found.
Hit any key to stop autoboot: 0
SMDK5250 #
2a. With CONFIG_DISPLAY_BOARDINFO_LATE, on serial:
U-Boot 2011.12-02550-g037e1c5 (Nov 15 2012 - 14:27:40) for SMDK5250
CPU: S5PC520 @ 1700MHz
I2C: ready
DRAM: 2 GiB Elpida DDR3 @ 800MHz
MMC: S5P MSHC0: 0, S5P MSHC1: 1
SF: Detected W25Q32 with page size 4 KiB, total 4 MiB
*** Warning - bad CRC, using default environment
Model: Google Snow
In: mkbp-keyb
Out: lcd
Err: lcd
Net: No ethernet found.
Hit any key to stop autoboot: 0
SMDK5250 #
2b. With CONFIG_DISPLAY_BOARDINFO_LATE, on LCD (note machine info is present):
Model: Google Snow
In: mkbp-keyb
Out: lcd
Err: lcd
Net: No ethernet found.
Hit any key to stop autoboot: 0
SMDK5250 #
Since the LCD is all that a typical user sees, it is useful to display
the model there.
We may be able to rearrange things some other way one day, but at
present this seems like a convenient way of getting the required
behaviour.
Signed-off-by: Simon Glass <sjg@chromium.org>
This option delays loading of the environment until later, so that only the
default environment will be available to U-Boot.
This can address the security risk of untrusted data being used during boot.
Any time you load untrusted data you expose yourself to a bug in the
code. The attacker gets to choose the data so can sometimes carefully
craft it to exploit a bug. We try to avoid touching user-controlled
data during a verified boot unless strictly necessary. Since the
default environment is good enough in this case (or you would just
change it), this gets around the problem by just not loading the
environment.
When CONFIG_DELAY_ENVIRONMENT is defined, it is convenient to have a
run-time way of enabling loading of the environment. Add this to the
fdt as /config/delay-environment.
Note: This patch depends on http://patchwork.ozlabs.org/patch/194342/
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
We want to use the fdt inside board_early_init_f(), so check for its
presence earlier in the pre-reloc init sequence.
So far ARM and microblaze are the only only ones that use
CONFIG_OF_CONTROL. Microblaze does not have the same init loop, and in
particular does not have the board_early_init_f() call. So a patch for
microblaze would have no meaning.
Signed-off-by: Simon Glass <sjg@chromium.org>
It may be necessary to know where the TLB area ends as well as where it
starts. This allows board code to complete a secure memory erase without
destroying the page tables.
Signed-off-by: Gabe Black <gabeblack@google.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
In Cortex-A15 architecture, when we run cache invalidate
the cache clean operation executes automatically.
So if there are any dirty cache lines before disabling the L2 cache
these will be synchronized with the main memory when
invalidate_dcache_all() runs in the last part of U-boot
The two functions after flush_dcache_all is using the stack. So this
data will be on the cache. After disable when invalidate is called the
data will be flushed from cache to memory. This corrupts the stack in
invalida_dcache_all. So this change is required to avoid the u-boot
hang.
So flush has to be done just before clearing CR_C bit
Signed-off-by: Arun Mankuzhi <arun.m@samsung.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Move all the C runtime setup code from every start.S
in arch/arm into arch/arm/lib/crt0.S. This covers
the code sequence from setting up the initial stack
to calling into board_init_r().
Also, rewrite the C runtime setup and make functions
board_init_*() and relocate_code() behave according to
normal C semantics (no jumping across the C stack any
more, etc).
Some SPL targets had to be touched because they use
start.S explicitly or for some reason; the relevant
maintainers and custodians are cc:ed.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Move the getenv_yesno() to env_common.c and change most checks for
'y' or 'n' to use this helper.
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Add support for adjusting the L1 cache behavior by updating the MMU
configuration. The mmu_set_region_dcache_behaviour() function allows
drivers to make these changes after the MMU is set up.
It is implemented only for ARMv7 at present.
This is needed for LCD support, where we want to make the LCD frame buffer
write-through (or off) rather than write-back.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
It is necessary to introduce a new system wide function- power_init_board()
It turns out, that power initialization must be done as early as possible.
In the case of PMIC framework redesign, which aims to support multiple
instances of PMIC devices the initialization shall be performed just
after malloc configuration.
The power_init_board function is a weak function with default implementation.
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Rather than leave the fdt down next to the code/data, we really should
relocate it along with everything else. For CONFIG_OF_EMBED this happens
automatically, but for CONFIG_OF_SEPARATE it does not.
Add code to copy the fdt and point to the new copy after relocation.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Remove the parts depending either on disabled CONFIG_SERIAL_MULTI
or ifdefs around CONFIG_SERIAL_MULTI parts since CONFIG_SERIAL_MULTI
is now enabled by default.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Tom Rini <trini@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Stefan Roese <sr@denx.de>
Under option -munaligned-access, gcc can perform local char
or 16-bit array initializations using misaligned native
accesses which will throw a data abort exception. Fix files
where these array initializations were unneeded, and for
files known to contain such initializations, enforce gcc
option -mno-unaligned-access.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
[trini: Switch to usign call cc-option for -mno-unaligned-access as
Albert had done previously as that's really correct]
Signed-off-by: Tom Rini <trini@ti.com>
The bootm initrd image copy to ram can collide with the stack in cases
where the print buffer size is large (i.e. 1K). The result is intermittent
initrd decompression errors depending on the initrd size MOD 4KB since
the initrd start address is 4KB aligned.
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Add an option, CONFIG_BOOTSTAGE_FDT to pass boot timings to the kernel
in the device tree, if available. To use this, you must have
CONFIG_OF_LIBFDT defined.
Signed-off-by: Simon Glass <sjg@chromium.org>
In SPL (CONFIG_SPL_FRAMEWORK) board_init_f must setup the stack pointer,
clear the BSS and call board_init_r. We mark this as weak as some
platforms may need to perform additional initalization at this point.
We provide a gd that we know will be in a usable location, once the BSS
has been cleared to help with this as well. Finally, we no longer call
relocate_code so remove that from the armv7 version.
Next, both board_init_f and jump_to_image_linux are going to be
inherently arch-specific, so move these versions to arch/arm/lib/spl.c
Signed-off-by: Tom Rini <trini@ti.com>
The board_postclk_init() function can be used to perform operations
that requires a working timer early within the U-Boot init_sequence.
Signed-off-by: Markus Hubig <mhubig@imko.de>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Enable the building of private libgcc for SPL
Signed-off-by: Allen Martin <amartin@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Create a weak-aliased arch_cpu_init, so that we can get rid of CONFIG_ARCH_CPU_INIT
and always call arch_cpu_init.
This way we do not need to define CONFIG_ARCH_CPU_INIT in every board file, since
arch_cpu_init() is supposed to handle common CPU level code.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
The following is the cleanup sequence in arch/arm/cpu/armv7/cpu.c
int cleanup_before_linux(void)
{
...
...
dcache_disable();
v7_outer_cache_disable();
invalidate_dcache_all();
}
1) invalidate_dcache_all call expects that all the caches has been
flushed, invalidated and there are no dirty entries prior to its
execution. In the above sequence dcache_disable() flushes, invalidates
the caches and turns off the mmu. But after it cleanups the cache
and before the mmu is disabled there is a cp_delay() function which
has STR instruction. On certain cores like the cortex-a15, cache hit
and a write can happen to a cache line even when the dcache is
disabled. So the above mentioned STR instruction creates a dirty entry
after cleaning. The mmu gets disabled after this.
2) invalidate_dcache_all invalidates the cache lines. Again on
cores like cortex-a15, invalidate instruction flushes the dirty
line as well. So some times the dirty line from sequence 1
can corrupt the memory resulting in a crash.
Fixing this by moving the get_cr() and cp_delay() calls before
cleaning up the cache, thus avoiding the dirty entry.
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Introduce arch_early_init_r() function, which can be useful for doing
early initialization after relocation has happened.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
