Commit graph

45 commits

Author SHA1 Message Date
Graeme Russ
880c80d004 Merge branch 'master' of git://git.denx.de/u-boot-x86 2011-04-13 19:56:23 +10:00
Graeme Russ
dbf7115a32 x86: Code cleanup
Make the copyright notices in the x86 files consistent and update them with
proper attributions for recent updates

Also fix a few comment style/accuracy and whitespace/blank line issues

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-13 19:43:26 +10:00
Graeme Russ
e413554f9d eNET: Remove config.mk
By including <config.h> in the ld script, CONFIG_SYS_MONITOR_LEN (defined
in the boards config file) can be used in lieu of FLASH_SIZE (defined in
the board specific config.mk)

As this is the last remaining entry in the board specific config.mk, this
file can now be removed

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-13 19:43:25 +10:00
Graeme Russ
e9bf8877da eNET: Fix undefined reference to `monitor_flash_len'
commit cfbe861506 removed the definition of
monitor_flash_len from the eNET which was not picked up due to extensive
use of the SRAM configuration target for testing

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-08 15:02:36 +10:00
Wolfgang Denk
14666418e9 Coding Style cleanup: remove trailing empty lines
Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-03-27 21:48:08 +02:00
Graeme Russ
96cd66426a sc520: Move RAM sizing code from asm to C 2011-02-12 15:11:54 +11:00
Graeme Russ
cfbe861506 eNET: General code cleanup 2011-02-12 15:11:48 +11:00
Graeme Russ
c083e4bab1 eNET: Rearrange PAR assignments 2011-02-12 15:11:47 +11:00
Graeme Russ
420c7c054b eNET: Define MMCR values in config.h 2011-02-12 15:11:45 +11:00
Graeme Russ
d881ea532b eNET: Fix eNET Interrupt Setup for Linux
Fix minor issues with the configuration of the hardware interrupts for
Linux when booting the eNET board
2011-02-12 15:11:41 +11:00
Graeme Russ
870847f5c5 sc520: Move board specific settings to board init function 2011-02-12 15:11:38 +11:00
Graeme Russ
c2cbbaf0b4 sc520: Define MMCR address in include file 2011-02-12 15:11:36 +11:00
Graeme Russ
0ea76e92e9 x86: Make cpu init functions weak 2011-02-12 15:11:35 +11:00
Graeme Russ
3a25e94410 x86: Parametize values used in linker script 2011-02-12 15:11:24 +11:00
Graeme Russ
fde5912366 eNET: Create distinct board configurations
Position independant functionality is due for removal from the x86
architecture, so create two distinct configurations - One for Flash and
one for SRAM
2011-02-12 15:11:22 +11:00
Graeme Russ
a85f53cd3f x86: Align config.mk and linker scripts with other arches 2011-02-12 15:11:21 +11:00
Sebastien Carlier
6d8962e814 Switch from archive libraries to partial linking
Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils.  As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".

This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.

The name of each former library archive is preserved except for
extensions which change from ".a" to ".o".  This commit updates
references accordingly where needed, in particular in some linker
scripts.

This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols.  Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.

Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-17 21:02:18 +01:00
Wolfgang Denk
c8d76eaf60 Rename TEXT_BASE: fix merge conflicts
Commit 14d0a02a "Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE" missed a
few places, especially for boards that were added inbetween. Fix the
remaining issues.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-18 23:48:15 +02:00
Wolfgang Denk
14d0a02a16 Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE
The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-18 22:07:10 +02:00
Graeme Russ
f2ff75c0a2 x86: Use loops instead of memcpy/memset in board_init_f
Provides a small speed increase and prepares for fully relocatable image.
Downside is the TEXT_BASE, bss, load address etc must ALL be aligned on a
a 4-byte boundary which is not such a terrible restriction as everything
is already 4-byte aligned anyway
2010-10-07 20:03:33 +11:00
Graeme Russ
2219142658 x86: Rearrange linker script
Tidy up the linker script and discard some sections to save space
2010-10-07 20:03:32 +11:00
Graeme Russ
067f9b1071 x86: Rename linker script symbols
Create more generic names for the symbols exported from the linker script
2010-10-07 20:03:31 +11:00
Graeme Russ
88fa0a6eb9 x86: Remove usage of %ebp as a return pointer
Using %ebp as a return pointer prevents creating 'load anywhere' images
2010-10-07 20:03:27 +11:00
Graeme Russ
6ae032a86a x86: Remove progress indication in low-level init
Progress indication is not relocation friendly so remove it in
preperation for full relocatability support
2010-10-07 20:03:24 +11:00
Graeme Russ
d664adb6bb x86: use gc sections to reduce image size
Follow the discussion of Charles Manning and Mike Frysinger.
Using gc_sections helps reduce image size.
2010-10-07 20:03:20 +11:00
Graeme Russ
de25059404 x86: Use TEXT_BASE in linker scripts
Use TEXT_BASE rather than a hard-coded base address on x86 linker scripts.
This will allow any board to define its base link address without having
to modify the linker script
2010-10-07 20:03:18 +11:00
Graeme Russ
880c59e5ad eNET: Implement eNET Watchdog
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06 00:20:04 +02:00
Graeme Russ
4a4c31ae08 eNET: Add PC/AT compatibility setup function
The eNET uses the sc520 software timers rather than the PC/AT clones

Set all interrupts and timers up to be PC/AT compatible

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06 00:19:19 +02:00
Graeme Russ
8fd805632f eNET: Add support for onboard RTL8100B (RTL8139) chips
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06 00:19:12 +02:00
Graeme Russ
21e67e796b sc520: Board Specific PCI Init
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06 00:18:52 +02:00
Graeme Russ
bf16500f79 x86: Use CONFIG_SERIAL_MULTI
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06 00:16:46 +02:00
Graeme Russ
077e1958ca x86: Add RAM bootstrap functionality
Add a parameter to the 32-bit entry to indicate if entry is from Real
Mode or not. If entry is from Real Mode, execute the destructive 'sizer'
routine to determine memory size as we are booting cold and running in
Flash. If not entering from Real Mode, we are executing a U-Boot image
from RAM and therefore the memory size is already known (and running
'sizer' will destroy the running image)

There are now two 32-bit entry points. The first is the 'in RAM' entry
point which exists at the start of the U-Boot binary image. As such,
you can load u-boot.bin in RAM and jump directly to the load address
without needing to calculate any offsets. The second entry point is
used by the real-to-protected mode switch

This patch also changes TEXT_BASE to 0x6000000 (in RAM). You can load
the resulting image at 0x6000000 and simple go 0x6000000 from the u-boot
prompt

Hopefully a later patch will completely elliminate any dependency on
TEXT_BASE like a relocatable linux kernel (perfect world)

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06 00:15:31 +02:00
Graeme Russ
64a0a4995e x86: Fix MMCR Access
Change sc520 MMCR Access to use memory accessor functions

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06 00:13:48 +02:00
Peter Tyser
89f39e177e Change directory-specific CFLAGS to use full path
Previously, a specific file or directory could be compiled with custom
CFLAGS by adding a Makefile variable such as:
  CFLAGS_dlmalloc.o = <custom flags for common/dlmalloc.c>
or
  CFLAGS_lib = <custom flags for lib directory>

This method breaks down once multiple files or directories share the
same path.  Eg FLAGS_fileA = <custom flags> would incorrectly result in
both dir1/fileA.c and dir2/fileA.c being compiled with <custom flags>.

This change allows finer grained control which we need once we move
lib_$ARCH to arch/$ARCH/lib/ and lib_generic/ to lib/.  Without this
change all lib/ directories would share the same custom CFLAGS.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:00 +02:00
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
aea14421c5 i386: Fix link collisions resulting from gcc4.4.1 upgrade
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-12-05 01:02:19 +01:00
Graeme Russ
c74bfce0fb i386: Fix dlmalloc compile warning
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-12-05 01:01:49 +01:00
Graeme Russ
5b34a296d4 Add PCI support to eNET board
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-09-04 21:57:50 +02:00
Graeme Russ
f50b619d9c i386: Moved PCI from #ifdef to conditional compile for sc520 boards
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-09-04 21:57:22 +02:00
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
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
Trent Piepho
f62fb99941 Fix all linker script to handle all rodata sections
A recent gcc added a new unaligned rodata section called '.rodata.str1.1',
which needs to be added the the linker script.  Instead of just adding this
one section, we use a wildcard ".rodata*" to get all rodata linker section
gcc has now and might add in the future.

However, '*(.rodata*)' by itself will result in sub-optimal section
ordering.  The sections will be sorted by object file, which causes extra
padding between the unaligned rodata.str.1.1 of one object file and the
aligned rodata of the next object file.  This is easy to fix by using the
SORT_BY_ALIGNMENT command.

This patch has not be tested one most of the boards modified.  Some boards
have a linker script that looks something like this:

*(.text)
. = ALIGN(16);
*(.rodata)
*(.rodata.str1.4)
*(.eh_frame)

I change this to:

*(.text)
. = ALIGN(16);
*(.eh_frame)
*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))

This means the start of rodata will no longer be 16 bytes aligned.
However, the boundary between text and rodata/eh_frame is still aligned to
16 bytes, which is what I think the real purpose of the ALIGN call is.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
2009-03-20 22:39:12 +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
c620c01e96 Added initial eNET board support
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2009-01-24 01:01:16 +01:00