u-boot.git/cpu/mpc85xx/mp.c, branch v2009.06

85xx: Introduce determine_mp_bootpg() helper.

2009-04-01T20:29:49+00:00

Match determine_mp_bootpg() that was added for 86xx.  We need this to
address a bug introduced in v2009.03 with 86xx MP booting.  We have to
make sure to reserve the region of memory used for the MP bootpg() so
other u-boot code doesn't use it.

Also added a comment about how cpu_reset() is dealing w/an errata on
early 85xx MP HW.

Signed-off-by: Kumar Gala

rename CFG_ macros to CONFIG_SYS

2008-10-18T19:54:03+00:00

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

85xx: Rename CONFIG_NR_CPUS to CONFIG_NUM_CPUS

2008-08-11T22:09:29+00:00

Use CONFIG_NUM_CPUS to match existing define used by 86xx.

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

Fix some more printf() format problems.

2008-07-14T21:01:01+00:00

Signed-off-by: Kumar Gala

85xx: Additional fixes and cleanup of MP code

2008-04-29T14:42:19+00:00

* adjust __spin_table alignment to match ePAPR v0.94 spec
* loop over all cpus when determing who is up.  This fixes an issue if
  the "boot cpu" isn't core0.  The "boot cpu" will already be in the
  cpu_up_mask so there is no harm
* Added some protection in the code to ensure proper behavior.  These
  changes are explicitly needed but don't hurt:
  - Added eieio to ensure the "hot word" of the table is written after
    all other table updates have occurred.
  - Added isync to ensure we don't prefetch loading of table entries
    until we a released

These issues we raised by Dave Liu.

Signed-off-by: Kumar Gala

85xx: Fix detection of MP cpu spin up

2008-04-11T22:32:56+00:00

We were looking at the wrong memory offset to determine of a secondary
cpu had been spun up or not.  Also added a warning message if the
all the secondary cpus we expect don't spin up.

Signed-off-by: Kumar Gala

85xx: Add cpu_mp_lmb_reserve helper to reserve boot page

2008-03-26T16:43:04+00:00

Provide a board_lmb_reserve helper function to ensure we reserve
the page of memory we are using for the boot page translation code.

Signed-off-by: Kumar Gala

85xx: Update multicore boot mechanism to ePAPR v0.81 spec

2008-03-26T16:43:04+00:00

The following changes are needed to be inline with ePAPR v0.81:

* r4, r5 and now always set to 0 on boot release
* r7 is used to pass the size of the initial map area (IMA)
* EPAPR_MAGIC value changed for book-e processors
* changes in the spin table layout
* spin table supports a 64-bit physical release address

Signed-off-by: Kumar Gala

85xx: Added support for multicore boot mechanism

2008-03-26T16:43:03+00:00

Added the cpu command that provides a generic mechanism to get status,
reset, and release secondary cores in multicore processors.

Added support for using the ePAPR defined spin-table mechanism on 85xx.

Signed-off-by: Kumar Gala