Commit graph

45 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
Graeme Russ
1c409bc710 i386: Final Relocation
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-12-05 01:05:39 +01:00
Graeme Russ
0fc1b49ecb i386: Remove inline asm symbols from .dynsym
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-12-05 01:04:44 +01:00
Graeme Russ
564a9984bd i386: Rearrange Interupt Handling
In preperation for full relocation

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-12-05 01:04:18 +01:00
Graeme Russ
27f13075a6 i386: Fix race condition when using SC520 timers
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-12-05 01:02:58 +01:00
Graeme Russ
ed7a1b681d i386: Replace [read, write]_mmcr_[byte, word, long] with memory mapped structure
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-09-04 21:56:45 +02:00
Graeme Russ
d754902409 i386: Misc PCI fixups
Change PCI_REGION_MEMORY to PCI_REGION_SYS_MEMORY (Originally done in
commit ff4e66e93c, regressed by commit 6d7f610b09)

Cast PCI_ROM_ADDRESS_MASK to u32

Wrap probe_pci_video() call inside #ifdef CONFIG_VIDEO

Change call to pci_find_class() to pci_find_devices(). This is based on a
patch submitted on 1st March 2007 (Patch that fixes the compilation errors
for sc520_cdp board) by mushtaq_k

This patch requires that PCI_VIDEO_VENDOR_ID and PCI_VIDEO_DEVICE_ID be
specified in the board config file.  Dummy values have been added for the
SC520 CDP board to enable compilation, but since I do not have one of these,
I do know what the values should be

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-09-04 21:52:52 +02:00
Graeme Russ
04ff9ab158 Fix sc520 timer interrupt generation
The current implementation has the timer being started before the interrupt
handler is installed. It the interrupt occurs before the handler is
installed, the timer interrupt is never reset and the timer stops

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-09-04 21:51:56 +02:00
Graeme Russ
cfb3a736ff i386: Change inline asm global symbols to local
gcc 4.3.2 optimiser creates multiple copies of inline asm (who knows why)
Remove use of global names for labels to prevent 'symbol already defined'
errors

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-09-04 21:49:48 +02:00
Josh Boyer
317734966e Dual-license IBM code contributions
It was brought to our attention that U-Boot contains code derived from the
IBM OpenBIOS source code originally provided with some of the older PowerPC
4xx development boards.  As a result, the original license of this code has
been carried in the various files for a number of years in the U-Boot project.

IBM is dual-licensing the IBM code contributions already present in U-Boot
under either the terms of the GNU General Public License version 2, or the
original code license already present.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-08-09 23:15:33 +02:00
Graeme Russ
e17ee157ca Add basic relocation to i386 port
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-03-20 22:39:13 +01:00
Graeme Russ
8c63d47651 Implement SC520 timers
Signed-off-by: Graeme Russ <graeme.russ at gmail.com>
2009-03-20 22:39:13 +01:00
Graeme Russ
6d7f610b09 Factor out SC520 sub-features
Moved sub-features of the SC520 code which is currently selectively compiled
using #ifdef out of sc520.c into individual files selectively compiled via
the makefile

Signed-off-by: Graeme Russ <graeme.russ at gmail.com>
2009-03-20 22:39:13 +01:00
Graeme Russ
abf0cd3dff Rewrite i386 interrupt handling
Rewrite interrupt handling functionality for the i386 port. Separated
functionality into separate CPU and Architecture components.

It appears as if the i386 interrupt handler functionality was intended
to allow multiple handlers to be installed for a given interrupt.
Unfortunately, this functionality was not fully implemented and also
had the problem that irq_free_handler() does not allow the passing
of the handler function pointer and therefore could never be used to
free specific handlers that had been installed for a given IRQ.

There were also various issues with array bounds not being fully
tested.

I had two objectives in mind for the new implementation:

1) Keep the implementation as similar as possible to existing
   implementations. To that end, I have used the leon2/3
   implementations as the reference

2) Seperate CPU and Architecture specific elements. All specific i386
   interrupt functionality is now in cpu/i386/ with the high level
   API and architecture specific code in lib_i386. Functionality
   specific to the PC/AT architecture (i.e. cascaded i8259 PICs) has
   been further split out into an individual file to allow for the
   implementation of the PIC architecture of the SC520 CPU (supports
   more IRQs)

Signed-off-by: Graeme Russ <graeme.russ at gmail.com>
2009-03-20 22:39:13 +01:00
Graeme Russ
6d83e3ac61 Rename SC520 Configuration Options
Options are now all uniformly CONFIG_SYS_SC520_<option>

Signed-off-by: Graeme Russ <graeme.russ at gmail.com>
2009-03-20 22:39:12 +01:00
Graeme Russ
f5a77a09c9 Moved SC520 Files (fix commit 407976185e)
Fixes commit 407976185e

Signed-off-by: Graeme Russ <graeme.russ at gmail.com>
2009-02-25 11:59:22 +01:00
Kumar Gala
ff4e66e93c pci: Rename PCI_REGION_MEMORY to PCI_REGION_SYS_MEMORY for clarity
The PCI_REGION_MEMORY and PCI_REGION_MEM are a bit to similar and
can be confusing when reading the code.

Rename PCI_REGION_MEMORY to PCI_REGION_SYS_MEMORY to clarify its used
for system memory mapping purposes.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-02-07 23:50:04 +01:00
Graeme Russ
2b5360eb2b Remove #ifdef CONFIG_SC520 in source code
CONFIG_SC520 is now used for conditional compile

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-01-24 01:14:31 +01:00
Graeme Russ
ead056bc20 Added MMCR reset functionality
Reset function specific to AMD SC520 microcontroller - Is more of a
'hard reset' that the triple fault.

Requires CONFIG_SYS_RESET_SC520 to be defined in config

I would have liked to add this to a new file (cpu/i386/sc520/reset.c)
but ld requires that a object file in a library arhive MUST contain
at least one function which does not override a weak function (and is
called from outside the object file) in order for that object file to
be extracted from the archive. This would be the only function on the
new file, and hence, will never get linked in.

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-01-24 01:13:25 +01:00
Graeme Russ
3f5f18d12d Moved generic (triple fault) reset code
Moved from interrupts.c to cpu.c and made into a weak function to
allow vendor specific override

Vendor specific CPU reset (like the AMD SC520 MMCR reset) can now be
added to the vendor specific code without the need to remember to
#undef usage of the generic method and if you forget to include your
custom reset method, you will always get the default.

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-01-24 01:12:20 +01:00
Graeme Russ
9933d60902 Moved definition of set_vector() to new header file
This allows for future tidy ups and functionality that will require
set_vector ()

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-01-24 01:11:32 +01:00
Graeme Russ
85ffbbd519 Renamed cpu/i386/reset.S to resetvec.S
Brings i386 in line with other CPUs with a reset vector and frees up reset.c
for CPU reset functions

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-01-24 01:06:25 +01:00
Graeme Russ
1f5070c0c1 Fixed path to sc520 SSI include file
Signed Off By: Graeme Russ <graeme.russ@gmail.com>
2008-12-10 00:34:09 +01:00
Graeme Russ
a369f4a492 i386: Renamed show_boot_progress in assembler code
Renamed show_boot_progress in assembler init phase to
show_boot_progress_asm to avoid link conflicts with C version

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2008-10-28 00:26:35 +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
b880cbf207 cpu/i386/serial.c: Fix syntax errors
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-07-14 21:19:08 +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
Jean-Christophe PLAGNIOL-VILLARD
3cc27b426a i386: Fix multiple definitions of __show_boot_progress
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-05-19 00:59:20 +02:00
Jon Loeliger
068b60a0eb cpu/ rtc/ include/: Remove lingering references to CFG_CMD_* symbols.
Signed-off-by: Jon Loeliger <jdl@freescale.com>
2007-07-10 10:27:39 -05:00
Jon Loeliger
3a1ed1e1f9 cpu/[7a-ln-z]*: Remove obsolete references to CONFIG_COMMANDS
Signed-off-by: Jon Loeliger <jdl@freescale.com>
2007-07-09 18:57:22 -05:00
Jon Loeliger
737184114e cpu/ non-mpc*: Augment CONFIG_COMMANDS tests with defined(CONFIG_CMD_*).
This is a compatibility step that allows both the older form
and the new form to co-exist for a while until the older can
be removed entirely.

All transformations are of the form:
Before:
    #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT)
After:
    #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT)

Signed-off-by: Jon Loeliger <jdl@freescale.com>
2007-07-04 00:34:13 +02:00
mushtaq khan
644e6fb4eb Fixes bug clearing the bss section for i386
Hi,
There is a bug in the code of clearing the bss section for processor
i386.(File: cpu/i386/start.S)
In the code, bss_start addr (starting addr of bss section) is put into
the register %eax, but the code which clears the bss section refers to
the addr pointed by %edi.

This patch fixes this bug by putting bss_start into %edi register.

Signed-off-by: Mushtaq Khan <mushtaq_k@procsys.com>
2007-05-15 23:15:10 +02:00
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
Wolfgang Denk
511d0c72b8 Coding style cleanup 2006-10-09 00:42:01 +02:00
Wolfgang Denk
6741ae92f3 Merge with /home/m8/git/u-boot 2006-09-04 01:03:57 +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
16850919ff Code cleanup 2006-08-27 18:10:01 +02:00
Wolfgang Denk
94568b600a Update for SC520 board.
Patch by David Updegraff, 02 Dec 2005
2006-08-14 23:23:06 +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
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
42dfe7a184 Code cleanup; make several boards compile & link. 2004-03-14 22:25:36 +00:00
wdenk
27b207fd0a * Implement new mechanism to export U-Boot's functions to standalone
applications: instead of using (PPC-specific) system calls we now
  use a jump table; please see doc/README.standalone for details

* Patch by Dave Westwood, 24 Jul 2003:
  added support for Unity OS (a proprietary OS)
2003-07-24 23:38:38 +00:00
wdenk
8bde7f776c * Code cleanup:
- remove trailing white space, trailing empty lines, C++ comments, etc.
  - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)

* Patches by Kenneth Johansson, 25 Jun 2003:
  - major rework of command structure
    (work done mostly by Michal Cendrowski and Joakim Kristiansen)
2003-06-27 21:31:46 +00:00
wdenk
7a8e9bed17 * Patch by Marc Singer, 29 May 2003:
Fixed rarp boot method for IA32 and other little-endian CPUs.

* Patch by Marc Singer, 28 May 2003:
  Added port I/O commands.

* Patch by Matthew McClintock, 28 May 2003
  - cpu/mpc824x/start.S: fix relocation code when booting from RAM
  - minor patches for utx8245

* Patch by Daniel Engström, 28 May 2003:
  x86 update

* Patch by Dave Ellis, 9 May 2003 + 27 May 2003:
  add nand flash support to SXNI855T configuration
  fix/extend nand flash support:
  - fix 'nand erase' command so does not erase bad blocks
  - fix 'nand write' command so does not write to bad blocks
  - fix nand_probe() so handles no flash detected properly
  - add doc/README.nand
  - add .jffs2 and .oob options to nand read/write
  - add 'nand bad' command to list bad blocks
  - add 'clean' option to 'nand erase' to write JFFS2 clean markers
  - make NAND read/write faster

* Patch by Rune Torgersen, 23 May 2003:
  Update for MPC8266ADS board
2003-05-31 18:35:21 +00:00
wdenk
2262cfeef9 * Patch by Daniel Engström, 13 Nov 2002:
Add support for i386 architecture and AMD SC520 board

* Patch by Pierre Aubert, 12 Nov 2002:
  Add support for DOS filesystem and booting from DOS floppy disk
2002-11-18 00:14:45 +00:00