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

Some old arm ports don't load the kernel at the beginning of the memory,

Browse Source 
because the bootloader, ie redboot, won't let them do so, and so used the
memory before the kernel for early memory allocation, such as pagetables,
stacks, etc...
Make a bit of an effort to try to get that memory mapped.
This commit is contained in:
Olivier Houchard 2016-08-30 23:30:26 +00:00
parent 82d3888118
commit 5d621118fe
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
sys/arm/arm/locore-v4.S
View File

@ -195,6 +195,16 @@ Lunmapped:
ldr r2, =(KERNVIRTADDR)
mov r3, #64
bl build_pagetables
#if defined(PHYSADDR) && (KERNVIRTADDR != KERNBASE)
/*
* If the kernel wasn't loaded at the beginning of the ram, map the memory
* before the kernel too, as some ports use that for pagetables, stack, etc...
*/
ldr r1, =PHYSADDR
ldr r2, =KERNBASE
ldr r3, =((KERNVIRTADDR - KERNBASE) / L1_S_SIZE)
bl build_pagetables
#endif
/* Create a device mapping for early_printf if specified. */
#if defined(SOCDEV_PA) && defined(SOCDEV_VA)