u-boot.git/cpu/blackfin, branch v2009.11

Blackfin: reset watchdog in udelay()

2009-10-14T01:48:52+00:00

All arches apparently should reset the watchdog in their udelay loop as
noted on the mailing list recently:

  > A comment in flash_status_check() suggests that udelay() is
  > expected to reset the watchdog, but I can't find any architecture
  > where it does.

  If this is missing in other architectures, it should be fixed at the
  root cause, i. e. in udelay() or in the respective support routines.

Signed-off-by: Mike Frysinger

Blackfin: use scratch pad for exception stack

2009-09-02T09:58:38+00:00

If the memory layout pushes the stack out of the default DCPLB coverage,
the exception handler may trigger a double fault by trying to push onto
the uncovered stack.  So handle the exception stack similar to the kernel
by using the top of the scratch pad SRAM.

Signed-off-by: Mike Frysinger

Blackfin: split cpu COBJS into multilines

2009-07-19T01:15:54+00:00

Signed-off-by: Mike Frysinger

Blackfin: add os log functions

2009-07-19T01:15:50+00:00

Part of the mini Blackfin ABI with operating systems is that they can use
0x4f0-0x4f8 to pass log buffers to/from bootloaders.  So add support to
U-Boot for reading the log buffer.

Signed-off-by: Mike Frysinger

stdio/device: rework function naming convention

2009-07-17T22:27:46+00:00

So far the console API uses the following naming convention:

	======Extract======
	typedef struct device_t;

	int	device_register (device_t * dev);
	int	devices_init (void);
	int	device_deregister(char *devname);
	struct list_head* device_get_list(void);
	device_t* device_get_by_name(char* name);
	device_t* device_clone(device_t *dev);
	=======

which is too generic and confusing.

Instead of using device_XX and device_t we change this
into stdio_XX and stdio_dev

This will also allow to add later a generic device mechanism in order
to have support for multiple devices and driver instances.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD 

Edited commit message.

Signed-off-by: Wolfgang Denk

Blackfin: bump up default JTAG console timeout

2009-06-15T17:30:08+00:00

The debug tools that interface with the other side of the JTAG console
got much slower when generalizing things, so bump up the default timeout
value on the U-Boot side to cope.  Hopefully at some point we can improve
the debug tools to speed things back up.

Signed-off-by: Vivi Li 
Signed-off-by: Mike Frysinger

Add support for Linux-like kallsysms

2009-06-12T18:45:48+00:00

The kernel stores address<->symbol names in it so things can be decoded at
runtime.  Do it in U-Boot, and we get nice symbol decoding when crashing.

Signed-off-by: Mike Frysinger

Blackfin: fix timer_init()/timer_reset()

2009-05-19T08:57:33+00:00

The timer_init() function was not using the right csync instruction, nor
was it doing it right after disabling the core timer.

The timer_reset() function would reset the timestamp, but not the actual
timer, so there was a common edge case where get_timer() return a jump of
one timestamp (couple milliseconds) right after resetting.  This caused
many functions to improperly timeout right away.

Signed-off-by: Graf Yang 
Signed-off-by: Mike Frysinger

Blackfin: avoid get_sclk() with early serial debug

2009-05-06T12:47:27+00:00

When the clock functions were changed to use cached values (and thereby
avoiding expensive math functions), early serial debug broke because the
baud programming is called before external memory is available.

Signed-off-by: Mike Frysinger

Blackfin: fix booting with older bootroms (no EVT1)

2009-05-06T12:47:21+00:00

When dropping jump block support, the assumption was that all bootroms
supported entry point redirection via the EVT1 register.  Unfortunately,
this turned out to be incorrect for the oldest Blackfin parts (BF533-0.2
and older and BF561).  No one really noticed earlier because these parts
usually are booted by bypassing the bootrom entirely, and older BF533
parts are not supported at all (too many anomalies).

Signed-off-by: Mike Frysinger