svn commit: r221997 - projects/pseries/powerpc/pseries

[Nathan Whitehorn]

Author: nwhitehorn
Date: Mon May 16 16:55:17 2011
New Revision: 221997
URL: http://svn.freebsd.org/changeset/base/221997

Log:
  Set the maximum real address to the end of the first element of the physical
  memory array, per the PAPR spec.

Modified:
  projects/pseries/powerpc/pseries/platform_chrp.c

Modified: projects/pseries/powerpc/pseries/platform_chrp.c
==============================================================================
--- projects/pseries/powerpc/pseries/platform_chrp.c	Mon May 16 16:34:03 2011	(r221996)
+++ projects/pseries/powerpc/pseries/platform_chrp.c	Mon May 16 16:55:17 2011	(r221997)
@@ -55,10 +55,13 @@ __FBSDID("$FreeBSD$");
 extern void *ap_pcpu;
 #endif
 
+static vm_offset_t realmaxaddr = VM_MAX_ADDRESS;
+
 static int chrp_probe(platform_t);
 static int chrp_attach(platform_t);
 void chrp_mem_regions(platform_t, struct mem_region **phys, int *physsz,
     struct mem_region **avail, int *availsz);
+static vm_offset_t chrp_real_maxaddr(platform_t);
 static u_long chrp_timebase_freq(platform_t, struct cpuref *cpuref);
 static int chrp_smp_first_cpu(platform_t, struct cpuref *cpuref);
 static int chrp_smp_next_cpu(platform_t, struct cpuref *cpuref);
@@ -70,6 +73,7 @@ static platform_method_t chrp_methods[] 
 	PLATFORMMETHOD(platform_probe, 		chrp_probe),
 	PLATFORMMETHOD(platform_attach,		chrp_attach),
 	PLATFORMMETHOD(platform_mem_regions,	chrp_mem_regions),
+	PLATFORMMETHOD(platform_real_maxaddr,	chrp_real_maxaddr),
 	PLATFORMMETHOD(platform_timebase_freq,	chrp_timebase_freq),
 	
 	PLATFORMMETHOD(platform_smp_first_cpu,	chrp_smp_first_cpu),
@@ -104,8 +108,14 @@ chrp_attach(platform_t plat)
 {
 #ifdef __powerpc64__
 	/* XXX: check for /rtas/ibm,hypertas-functions? */
-	if (!(mfmsr() & PSL_HV))
+	if (!(mfmsr() & PSL_HV)) {
+		struct mem_region *phys, *avail;
+		int nphys, navail;
+		mem_regions(&phys, &nphys, &avail, &navail);
+		realmaxaddr = phys[0].mr_size;
+
 		pmap_mmu_install("mmu_phyp", BUS_PROBE_SPECIFIC);
+	}
 #endif
 
 	return (0);
@@ -118,6 +128,12 @@ chrp_mem_regions(platform_t plat, struct
 	ofw_mem_regions(phys,physsz,avail,availsz);
 }
 
+static vm_offset_t
+chrp_real_maxaddr(platform_t plat)
+{
+	return (realmaxaddr);
+}
+
 static u_long
 chrp_timebase_freq(platform_t plat, struct cpuref *cpuref)
 {