Commit graph

29 commits

Author SHA1 Message Date
Ingo van Lil
3eb90bad65 Generic udelay() with watchdog support
According to the PPC reference implementation the udelay() function is
responsible for resetting the watchdog timer as frequently as needed.
Most other architectures do not meet that requirement, so long-running
operations might result in a watchdog reset.

This patch adds a generic udelay() function which takes care of
resetting the watchdog before calling an architecture-specific
__udelay().

Signed-off-by: Ingo van Lil <inguin@gmx.de>
2009-12-05 01:08:53 +01:00
Kumar Gala
d72871e138 arm: Remove -fno-strict-aliasing
-fno-strict-aliasing is hidding warnings.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-09-04 22:15:53 +02:00
Wolfgang Denk
f772acf8a5 ARM: compiler options cleanup - improve tool chain support
For some time there have been repeated reports about build problems
with some ARM (cross) tool chains.  Especially issues about
(in)compatibility with the tool chain provided runtime support
library libgcc.a caused to add and support a private implementation
of such runtime support code in U-Boot.  A closer look at the code
indicated that some of these issues are actually home-made.  This
patch attempts to clean up some of the most obvious problems and make
building of U-Boot with different tool chains easier:

- Even though all ARM systems basicy used the same compiler options
  to select a specific ABI from the tool chain, the code for this was
  distributed over all cpu/*/config.mk files.  We move this one level
  up into lib_arm/config.mk instead.

- So far, we only checked if "-mapcs-32" was supported by the tool
  chain; if yes, this was used, if not, "-mabi=apcs-gnu" was
  selected, no matter if the tool chain actually understood this
  option.  There was no support for EABI conformant tool chains.
  This patch implements the following logic:

  1) If the tool chain supports
	"-mabi=aapcs-linux -mno-thumb-interwork"
     we use these options (EABI conformant tool chain).
  2) Otherwise, we check first if
	"-mapcs-32"
     is supported, and then check for
	"-mabi=apcs-gnu"
     If one test succeeds, we use the first found option.
  3) In case 2), we also test if "-mno-thumb-interwork", and use
     this if the test succeeds. [For "-mabi=aapcs-linux" we set
     "-mno-thumb-interwork" mandatorily.]

  This way we use a similar logic for the compile options as the
  Linux kernel does.

- Some EABI conformant tool chains cause external references to
  utility functions like raise(); such functions are provided in the
  new file lib_arm/eabi_compat.c

  Note that lib_arm/config.mk gets parsed several times, so we must
  make sure to add eabi_compat.o only once to the linker list.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Dirk Behme <dirk.behme@googlemail.com>
Cc: Magnus Lilja <lilja.magnus@gmail.com>
Cc: Tom Rix <Tom.Rix@windriver.com>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Acked-by: Sergey Kubushyn <ksi@koi8.net>
Tested-by: Magnus Lilja <lilja.magnus@gmail.com>
Tested-by: Andrzej Wolski <awolski@poczta.fm>
Tested-by: Gaye Abdoulaye Walsimou <walsimou@walsimou.com>
Tested-by: Tom Rix <Tom.Rix@windriver.com>
Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-08-21 23:11:53 +02:00
Jean-Christophe PLAGNIOL-VILLARD
3ea201b016 lh7a40x: move serial driver to drivers/serial
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-12 20:39:53 +02:00
Jean-Christophe PLAGNIOL-VILLARD
ad7e8aac69 arm: remove cpu_init
move s3c44b0 to arch_cpu_init and as noone use cpu_init remove it

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-12 20:39:52 +02:00
Jean-Christophe PLAGNIOL-VILLARD
c358d9c3f1 arm: unify interrupt init
all arm init the IRQ stack the same way
so unify it in lib_arm/interrupts.c and then call arch specific interrupt init

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-12 20:39:52 +02:00
Jean-Christophe PLAGNIOL-VILLARD
10a451cd57 arm: unify linker script
all arm boards except a few use the same cpu linker script
so move it to cpu/$(CPU)

that could be overwrite in following order
SOC
BOARD
via the corresponding config.mk

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-12 20:39:52 +02:00
Jean-Christophe PLAGNIOL-VILLARD
2907798926 arm920/926/926: remove non needed header
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-12 20:39:49 +02:00
Jean-Christophe PLAGNIOL-VILLARD
b54384e3ba arm: timer and interrupt init rework
actually the timer init use the interrupt_init as init callback
which make the interrupt and timer implementation difficult to follow

so now rename it as int timer_init(void) and use interrupt_init for interrupt

btw also remane the corresponding file to the functionnality implemented

as ixp arch implement two timer - one based on interrupt - so all the timer
related code is moved to timer.c

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-12 20:39:48 +02:00
Detlev Zundel
792a09eb9d Fix e-mail address of Gary Jennejohn.
Signed-off-by: Detlev Zundel <dzu@denx.de>
2009-05-15 22:11:59 +02:00
Jean-Christophe PLAGNIOL-VILLARD
ab29823151 arm: unify reset command
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-04-05 13:08:03 +02:00
Jean-Christophe PLAGNIOL-VILLARD
b3acb6cd40 arm: clean cache management
unify arm cache management except for non standard cache as ARM7TDMI

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-04-05 13:06:31 +02:00
Jean-Christophe PLAGNIOL-VILLARD
677e62f432 arm: update co-processor 15 access
import system.h from linux

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-04-05 13:02:43 +02:00
Sergei Poselenov
0e0c862efe Remove compiler warning: target CPU does not support interworking
This warning is issued by modern ARM-EABI GCC on non-thumb targets.

Signed-off-by: Vladimir Panfilov <pvr@emcraft.com>
Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
2008-12-13 23:41:23 +01:00
Jean-Christophe PLAGNIOL-VILLARD
6d0f6bcf33 rename CFG_ macros to CONFIG_SYS
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00
Wolfgang Denk
53677ef18e Big white-space cleanup.
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).

Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-05-21 00:14:08 +02:00
Andreas Engel
6d0943a6be ARM: cleanup duplicated exception handlingcode
Move duplicated exception handling code into lib_arm.

Signed-off-by: Andreas Engel <andreas.engel@ericsson.com>
2008-02-14 09:38:21 +00:00
Wolfgang Denk
2b208f5308 Move "ar" flags to config.mk to allow for silent "make -s"
Based on patch by Mike Frysinger, 20 Jun 2006
2006-10-09 01:02:05 +02:00
Marian Balakowicz
f93286397e Add support for a saving build objects in a separate directory.
Modifications are based on the linux kernel approach and
support two use cases:

  1) Add O= to the make command line
  'make O=/tmp/build all'

  2) Set environement variable BUILD_DIR to point to the desired location
  'export BUILD_DIR=/tmp/build'
  'make'

The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'

Command line 'O=' setting overrides BUILD_DIR environent variable.

When none of the above methods is used the local build is performed and
the object files are placed in the source directory.
2006-09-01 19:49:50 +02:00
Wolfgang Denk
d87080b721 GCC-4.x fixes: clean up global data pointer initialization for all boards. 2006-03-31 18:32:53 +02:00
Wolfgang Denk
9b880bd4d8 Update ARM Integrator boards:
Correct addessing errors in platform files.
Split off common core module data from Integrator header files to
include/armcoremodule.h.
Patch by Peter Pearse, 04 Oct 2005
2005-10-04 23:10:28 +02:00
Wolfgang Denk
1820d4c73b Make sure only supported compiler options are used
Import "cc-option" shell function from kernel and
use it to get the correct ARM GCC options for individual CPUs
Patch by Peter Pearse, 30 Jun 2005
2005-10-04 22:38:24 +02:00
wdenk
8aa1a2d115 Patch by Steven Scholz, 4 Apr 2005:
- remove all references to CONFIG_INIT_CRITICAL for ARM based boards
- introduce two new configuration options instead:
  CONFIG_SKIP_LOWLEVEL_INIT and CONFIG_SKIP_RELOCATE_UBOOT
2005-04-04 12:44:11 +00:00
wdenk
101e8dfa2a Fix timer code for ARM systems: make sure that udelay() does not
reset timers so it's save to use udelay() in timeout code.
2005-04-04 12:08:28 +00:00
wdenk
3ec924a3cb Patch by Steven Scholz, 25 Oct 2004:
Declare reset_cpu() in include/common.h instead locally
2005-04-03 17:23:39 +00:00
wdenk
400558b561 Prepare for SoC rework of ARM code:
- rename CONFIG_BOOTBINFUNC into  CONFIG_INIT_CRITICAL
- rename memsetup into lowlevel_init (function name and source files)
2005-04-02 23:52:25 +00:00
wdenk
a1191902ca * Patch by Jon Loeliger, 02 Sep 2004:
Reset monitor size back to 256 so environment can be written
  to flash on MPC85xx ADS and CDS releases.

* Patch by Paolo Broggini, 02 Sep 2004:
  Make BSS clearing on ARM systems more robust

* Patch by Yue Hu and Joe, 01 Sep 2004:
  - add PCI support for ixp425;
  - add EEPRO100 suppor tfor ixdp425 board.

* Fix problem with protected sector detection in driver/cfi_flash.c
2005-01-09 17:12:27 +00:00
wdenk
f832d8a143 * Patch by Paul Ruhland, 10 Jun 2004:
fix support for Logic SDK-LH7A404 board and clean up the
  LH7A404 register macros.

* Patch by Matthew McClintock, 10 Jun 2004:
  Modify code to select correct serial clock on Sandpoint8245
2004-06-10 21:55:33 +00:00
wdenk
f39748ae8e * Patch by Paul Ruhland, 17 May 2004:
- Add support for the Logic Zoom LH7A40x based SDK board(s),
    specifically the LPD7A400.

* Patches by Robert Schwebel, 15 May 2004:
  - call MAC address reading code also for SMSC91C111;
  - make SMSC91C111 timeout configurable, remove duplicate code
  - fix get_timer() for PXA
  - update doc/README.JFFS2
  - use "bootfile" env variable also for jffs2
2004-06-09 13:37:52 +00:00