d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

powerpc/booke: Change KERNBASE to be physical load address

Browse Source 
Previous commits have made VM_MIN_KERNEL_ADDRESS its own separate entity,
and rebased the kernel around that address instead of KERNBASE.  This commit
pulls the trigger to rebase KERNBASE to a physical load address.  The
eventual goal is to align the address with the AIM KERNBASE, but at this
time that's not an option.

Currently a Book-E kernel must be loaded on a 64MB boundary, due to size
issues.  The common load address is at the 64MB mark (0x04000000), so simply
make that the default KERNBASE.

As of this commit, Book-E kernels can be loaded and booted with ubldr.

MFC after:	3 weeks
This commit is contained in:
jhibbits 2018-12-13 05:07:39 +00:00
parent b7802808dc
commit 9df2142898
1 changed files with 3 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
sys/powerpc/include/vmparam.h
View File

@ -133,16 +133,9 @@
#else /* Book-E */
#ifdef __powerpc64__
#ifndef LOCORE
#define KERNBASE 0xe000000000000100UL /* start of kernel virtual */
#else
#define KERNBASE 0xe000000000000100 /* start of kernel virtual */
#endif
#else
#define KERNBASE 0xc0000000 /* start of kernel virtual */
#define VM_MIN_KERNEL_ADDRESS KERNBASE
#define KERNBASE 0x04000100 /* start of kernel physical */
#ifndef __powerpc64__
#define VM_MIN_KERNEL_ADDRESS 0xc0000000
#define VM_MAX_KERNEL_ADDRESS 0xffffefff
#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS
#endif