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authorcinap_lenrek <cinap_lenrek@felloff.net>2019-05-13 19:12:41 +0200
committercinap_lenrek <cinap_lenrek@felloff.net>2019-05-13 19:12:41 +0200
commit3b36daa2bb8c0f4169455baf829b9695b520c5fc (patch)
tree9da4980fe24b4464e4e8d4c9698afcd1b9549c0e /sys/src/9/bcm/mmu.c
parent157d7ebdbd7479b271e7b1df744b2dfc6b5816e9 (diff)
bcm, bcm64: preserve memsize across reboots, avoid trashing atags while parsing cmdline
we override atag memory on reboot, so preserve the memsize learned from atag as *maxmem plan9 variable. the global memsize variable is not needed anymore. avoid trashing the following atag when zero terminating the cmdline string. zero memory after plan9.ini variables.
Diffstat (limited to 'sys/src/9/bcm/mmu.c')
-rw-r--r--sys/src/9/bcm/mmu.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/src/9/bcm/mmu.c b/sys/src/9/bcm/mmu.c
index 9d2e3709c..614a6fb4f 100644
--- a/sys/src/9/bcm/mmu.c
+++ b/sys/src/9/bcm/mmu.c
@@ -304,8 +304,8 @@ mmuuncache(void* v, usize size)
uintptr
cankaddr(uintptr pa)
{
- if(pa < PHYSDRAM + memsize) /* assumes PHYSDRAM is 0 */
- return PHYSDRAM + memsize - pa;
+ if(pa < PHYSDRAM+soc.dramsize)
+ return PHYSDRAM+soc.dramsize - pa;
return 0;
}