u-boot.git/cpu/mpc85xx, branch v2009.01

Change DDR tlb start entry to CONFIG param for 85xx

2009-01-13T22:47:07+00:00

So that we can locate the DDR tlb start entry to the value other than 8. By
default, it is still 8.

Signed-off-by: Haiying Wang

mpc8[56]xx: Put localbus clock in sysinfo and gd

2008-12-20T00:32:49+00:00

Currently MPC85xx and MPC86xx boards just calculate the localbus frequency
and print it out, but don't save it.

This changes where its calculated and stored to be more consistent with the
CPU, CCB, TB, and DDR frequencies and the MPC83xx localbus clock.

The localbus frequency is added to sysinfo and calculated when sysinfo is
set up, in cpu/mpc8[56]xx/speed.c, the same as the other frequencies are.

get_clocks() copies the frequency into the global data, as the other
frequencies are, into a new field that is only enabled for MPC85xx and
MPC86xx.

checkcpu() in cpu/mpc8[56]xx/cpu.c will print out the local bus frequency
from sysinfo, like the other frequencies, instead of calculating it on the
spot.

Signed-off-by: Trent Piepho 
Acked-by: Kumar Gala 
Acked-by: Jon Loeliger

mpc8568: Double local bus clock divider

2008-12-20T00:32:48+00:00

The clock divider for the MPC8568 local bus should be doubled, like the
other newer MPC85xx chips.

Since there are now more chips with a 2x divider than a 1x, and any new
85xx chips will probably be 2x, invert the sense of the #if so that it
lists the 1x chips instead of the 2x ones.

Signed-off-by: Trent Piepho 
Acked-by: Kumar Gala 
Acked-by: Jon Loeliger

85xx: Fix the boot window issue

2008-12-20T00:32:48+00:00

If one custom board is using the 8MB flash, it is set
as FLASH_BASE = 0xef000000, TEXT_BASE = 0xef780000.
The current start.S code will be broken at switch_as.

It is because the TLB1[15] is set as 16MB page size,
EPN = TEXT_BASE & 0xff000000, RPN = 0xff000000.

For the 8MB flash case, the EPN = 0xefxxxxxx,
RPN = 0xffxxxxxx. Assume the virt address of switch_as
is 0xef7ff18c, the real address of the instruction at
switch_as should be 0xff7ff18c. the 0xff7ff18c is out
of the range of the default 8MB boot LAW window
0xff800000 - 0xffffffff.

So when we switch to AS1 address space at switch_as,
the core can't fetch the instruction at switch_as any
more. It will cause broken issue.

Signed-off-by: Dave Liu

Set IVPR to kenrel entry point in second core boot page

2008-12-20T00:32:41+00:00

Assuming the OSes exception vectors start from the base of kernel address, and
the kernel physical starting address can be relocated to an non-zero address.
This patch enables the second core to have a valid IVPR for debugger before
kernel setting IVPR in CAMP mode. Otherwise, IVPR is 0x0 and it is not a valid
value for second core which runs kernel at different physical address other
than 0x0.

Signed-off-by: Haiying Wang

mpc8xxx: LCRR[CLKDIV] is sometimes five bits

2008-12-20T00:20:25+00:00

On newer CPUs, 8536, 8572, and 8610, the CLKDIV field of LCRR is five bits
instead of four.

In order to avoid an ifdef, LCRR_CLKDIV is set to 0x1f on all systems.  It
should be safe as the fifth bit was defined as reserved and set to 0.

Code that was using a hard coded 0x0f is changed to use LCRR_CLKDIV.

Signed-off-by: Trent Piepho 
Acked-by: Kumar Gala 
Acked-by: Jon Loeliger

mpc8[56]xx: Put localbus clock in device tree

2008-12-20T00:20:20+00:00

Export the localbus frequency in the device tree, the same way the CPU, TB,
CCB, and various other frequencies are exported in their respective device
tree nodes.

Some localbus devices need this information to be programed correctly, so
it makes sense to export it along with the other frequencies.

Unfortunately, when someone wrote the localbus dts bindings, they didn't
bother to define what the "compatible" property should be.  So it seems no
one was quite sure what to put in their dts files.

Based on current existing dts files in the kernel source, I've used
"fsl,pq3-localbus" and "fsl,elbc" for MPC85xx, which are used by almost all
of the 85xx devices, and are looked for by the Linux code.  The eLBC is
apparently not entirely backward compatible with the pq3 LBC and so eLBC
equipped platforms like 8572 won't use pq3-localbus.

For MPC86xx, I've used "fsl,elbc" which is used by some of the 86xx systems
and is also looked for by the Linux code.  On MPC8641, I've also used
"fsl,mpc8641-localbus" as it is also commonly used in dts files, some of
which don't use "fsl,elbc" or any other acceptable name to match on.

Signed-off-by: Trent Piepho 
Acked-by: Kumar Gala 
Acked-by: Jon Loeliger

85xx: Add support to populate addr map based on TLB settings

2008-12-20T00:20:08+00:00

Signed-off-by: Kumar Gala

Update U-Boot's build timestamp on every compile

2008-12-06T22:36:43+00:00

Use the GNU 'date' command to auto-generate a new U-Boot
timestamp on every compile.

Signed-off-by: Peter Tyser

85xx: init gd as early as possible

2008-12-04T09:15:43+00:00

Moved up the initialization of GD so C code like set_tlb() can use
gd->flags to determine if we've relocated or not in the future.

Signed-off-by: Kumar Gala 
Acked-by: Andy Fleming