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Allow the armv6 kernel to be build with PHYSADDR undefined. The kernel

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will now find the virtual to physical mapping for libkvm to use at
runtime. This makes PHYSADDR redundant, however keep it around to give
everyone a chance to update their libkvm.

MFC after:	1 week
This commit is contained in:
Andrew Turner 2014-10-19 21:03:42 +00:00
parent 5017180789
commit 199de3d71a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=273288
1 changed files with 19 additions and 1 deletions
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20
sys/arm/arm/locore.S
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@ -42,6 +42,18 @@
__FBSDID("$FreeBSD$");
/*
* Sanity check the configuration.
* FLASHADDR and LOADERRAMADDR depend on PHYSADDR in some cases.
* ARMv4 and ARMv5 make assumptions on where they are loaded.
*
* TODO: Fix the ARMv4/v5 case.
*/
#if (defined(FLASHADDR) || defined(LOADERRAMADDR) || !defined(_ARM_ARCH_6)) && \
!defined(PHYSADDR)
#error PHYSADDR must be defined for this configuration
#endif
/* What size should this really be ? It is only used by initarm() */
#define INIT_ARM_STACK_SIZE (2048 * 4)
@ -54,15 +66,21 @@ __FBSDID("$FreeBSD$");
CPWAIT_BRANCH /* branch to next insn */
/*
* This is for kvm_mkdb, and should be the address of the beginning
* This is for libkvm, and should be the address of the beginning
* of the kernel text segment (not necessarily the same as kernbase).
*
* These are being phased out. Newer copies of libkvm don't need these
* values as the information is added to the core file by inspecting
* the running kernel.
*/
.text
.align 0
#ifdef PHYSADDR
.globl kernbase
.set kernbase,KERNBASE
.globl physaddr
.set physaddr,PHYSADDR
#endif
/*
* On entry for FreeBSD boot ABI: