u-boot.git/cpu/i386, branch v2009.06

Add basic relocation to i386 port

2009-03-20T21:39:13+00:00

Signed-off-by: Graeme Russ

Implement SC520 timers

2009-03-20T21:39:13+00:00

Signed-off-by: Graeme Russ

Factor out SC520 sub-features

2009-03-20T21:39:13+00:00

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

Rewrite i386 interrupt handling

2009-03-20T21:39:13+00:00

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

Rename SC520 Configuration Options

2009-03-20T21:39:12+00:00

Options are now all uniformly CONFIG_SYS_SC520_

Moved SC520 Files (fix commit 407976185e0dda2c90e89027121a1071b9c77bfb)

2009-02-25T10:59:22+00:00

Fixes commit 407976185e0dda2c90e89027121a1071b9c77bfb

Signed-off-by: Graeme Russ

pci: Rename PCI_REGION_MEMORY to PCI_REGION_SYS_MEMORY for clarity

2009-02-07T22:50:04+00:00

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

Remove #ifdef CONFIG_SC520 in source code

2009-01-24T00:14:31+00:00

CONFIG_SC520 is now used for conditional compile

Signed-off-by: Graeme Russ

Added MMCR reset functionality

2009-01-24T00:13:25+00:00

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

Moved generic (triple fault) reset code

2009-01-24T00:12:20+00:00

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