I am working through bringing up Linux 2.6.14 on a Xilinx V4 based
ppc405. with memory from 0x0 through 0x7fffffff
I have a debugging port at XPAR_KEYHOLE, I basically copied the code to
setup a tlb entry for the serial debugging console to get an additional
entry for my debugging port.
I am not particularly sharp on memory management.
Can I just cut and paste that code changing the address, and the tlb
slot as below ?
/* Load a TLB entry for the Keyhole, We use a 4k real==virtual
mapping. */
lis r3,XPAR_KEYHOLE at h
ori r3,r3,XPAR_KEYHOLE at l
mr r4,r3
clrrwi r4,r4,12
ori r4,r4,(TLB_WR|TLB_I|TLB_M|TLB_G)
clrrwi r3,r3,12
ori r3,r3,(TLB_VALID | TLB_PAGESZ(PAGESZ_4K))
li r0,1 /* TLB slot 1 */
tlbwe r4,r0,TLB_DATA
tlbwe r3,r0,TLB_TAG
