Subject: Re:-pmap initlialization To: None <> From: Toru
Nishimura <> List: port-arm Date: 01/08/2005 22:54:21 Kamal R.
Prasad said;  >> At this memoment, PC >> (program counter) may
point to physical address >> (0xa000-0000) or >> MMU enabled
virtual address (0xc000-0000).  Let's >> assume the latter. > I
actually used the physical address 0xa0200000.   Make sure to
follow the instructions described below.  1. Turn off MMU first
jumping carefully to continue CPU using the next valid paddr
(very beginning of 0xa020-xxxx). 2. Modifiy L1 table left by Re*
to match NetBSD address space. The most crital part is SDRAM
paddr -> vaddr 0xC000-0000, and the vaddr where LED or UART
registers are populated somewhere beyond kernend.  They are
constant, so there is no good reason in iniarm() to pretend
playing smart bus_space dance. 3. Turn on MMU and jump again to
next vaddr.  Re* L1 table is now replaced with NetBSD kernel
space. 4. At the bottom of xxx_machdep.S jumps to vaddr of
kernel_start:. 6. Make MMU re-enabled t