Its reset value is random, and we sometimes read uninitialized TLB
arrays. Make sure that we don't retain MAS8 from reading such an entry
if the VF bit in MAS8 is set, attempts to use the mapping will trap.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Allow us to search the TLB array based on an address. This is useful
if we want to change an entry but dont know where it happens to be
located.
For example, the boot page mapping we use on MP or the flash TLB that
we change the WIMGE settings for after we've relocated.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
When we init the addrmap based on the TLB we will not end up getting
the TLB that covers memory if we are using SPD. The reason is we
haven't relocated at the point that we setup the memory TLB and thus it
will not get setup in the addrmap.
Instead we can just walk over the TLB array after we've relocated and
see all the TLBs that have been set and use that information to populate
the initial addrmap. By doing this we insure that we get the TLB
entries that cover memory.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The MAXSIZE field in the TLB1CFG register is 4 bits, not 8 bits.
This made setup_ddr_tlbs() try to set up a TLB larger than the e500 maximum
(256 MB)
which made u-boot hang in board_init_f() when trying to create a new stack
in RAM.
I have an mpc8540 with one 1GB dimm.
Signed-off-by: Fredrik Arnerup <fredrik.arnerup@edgeware.tv>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Previously we only allowed power-of-two memory sizes and didnt
handle >2G of memory. Now we will map up to CONFIG_MAX_MEM_MAPPED
and should properly handle any size that we can make in the TLBs
we have available to us
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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 <Haiying.Wang@freescale.com>
Now that all boards have been converted, remove old config code and the
config option for the new style.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add a set of functions to manipulate TLB entries:
* set_tlb() - write a tlb entry
* invalidate_tlb() - invalidate a tlb array
* disable_tlb() - disable a variable size tlb entry
* init_tlbs() - setup initial tlbs based on static table
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Scott Wood
Kumar Gala
Wolfgang Denk
Fredrik Arnerup
Haiying Wang
Jean-Christophe PLAGNIOL-VILLARD