diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-10-28 06:16:10 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-10-28 06:16:10 +0100 |
| commit | b715c39bfa1e2169f450f719ba8a7643c7b39b68 (patch) | |
| tree | dc5becbf9c6826e8e17b34fe84723630e8410ad5 /sys/src/9/bcm/mmu.c | |
| parent | 0fc2adb43dc8be67b6eca49e3e28339367a01246 (diff) | |
bcm: simplify reboot code
- synchronize rebootcode installation
- handle the 1MB identity map in mmu.c (mmuinit1())
- do not overlap CONFADDR with rebootcode, the non boot
processors are parked there.
- make REBOOTADDR physical address
Diffstat (limited to 'sys/src/9/bcm/mmu.c')
| -rw-r--r-- | sys/src/9/bcm/mmu.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/sys/src/9/bcm/mmu.c b/sys/src/9/bcm/mmu.c index af647285f..431c2bff9 100644 --- a/sys/src/9/bcm/mmu.c +++ b/sys/src/9/bcm/mmu.c @@ -12,6 +12,7 @@ #define L2AP(ap) l2ap(ap) #define L1ptedramattrs soc.l1ptedramattrs #define L2ptedramattrs soc.l2ptedramattrs +#define PTEDRAM (PHYSDRAM|Dom0|L1AP(Krw)|Section|L1ptedramattrs) enum { L1lo = UZERO/MiB, /* L1X(UZERO)? */ @@ -43,7 +44,7 @@ mmuinit(void *a) /* * identity map first MB of ram so mmu can be enabled */ - l1[L1X(PHYSDRAM)] = PHYSDRAM|Dom0|L1AP(Krw)|Section|L1ptedramattrs; + l1[L1X(PHYSDRAM)] = PTEDRAM; /* * map i/o registers @@ -65,19 +66,19 @@ mmuinit(void *a) l2[L2X(va)] = PHYSDRAM|L2AP(Krw)|Small|L2ptedramattrs; } +/* + * enable/disable identity map of first MB of ram + */ void -mmuinit1() +mmuinit1(int on) { PTE *l1; l1 = m->mmul1; - - /* - * undo identity map of first MB of ram - */ - l1[L1X(PHYSDRAM)] = 0; + l1[L1X(PHYSDRAM)] = on? PTEDRAM: Fault; cachedwbtlb(&l1[L1X(PHYSDRAM)], sizeof(PTE)); mmuinvalidateaddr(PHYSDRAM); + mmuinvalidate(); } static void |