[PATCH] powerpc: merge code values for identifying platforms

This patch merges platform codes.  systemcfg->platform is no longer used,
systemcfg use in general is deprecated as much as possible (and renamed
_systemcfg before it gets completely moved elsewhere in a future patch),
_machine is now used on ppc64 along as ppc32.  Platform codes aren't gone
yet but we are getting a step closer. A bunch of asm code in head[_64].S
is also turned into C code.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

9 files changed, 33 insertions, 27 deletions

diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index 7f8f0cda6a74..623c39aa0436 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -39,6 +39,7 @@
 #include <asm/sections.h>
 #include <asm/iommu.h>
 #include <asm/firmware.h>
+#include <asm/systemcfg.h>
 
 #include <asm/time.h>
 #include <asm/paca.h>
@@ -71,7 +72,7 @@ extern void hvlog(char *fmt, ...);
 #endif
 
 /* Function Prototypes */
-static void build_iSeries_Memory_Map(void);
+static unsigned long build_iSeries_Memory_Map(void);
 static void iseries_shared_idle(void);
 static void iseries_dedicated_idle(void);
 #ifdef CONFIG_PCI
@@ -403,9 +404,11 @@ void mschunks_alloc(unsigned long num_chunks)
  * a table used to translate Linux's physical addresses to these
  * absolute addresses.  Absolute addresses are needed when
  * communicating with the hypervisor (e.g. to build HPT entries)
+ *
+ * Returns the physical memory size
  */
 
-static void __init build_iSeries_Memory_Map(void)
+static unsigned long __init build_iSeries_Memory_Map(void)
 {
         u32 loadAreaFirstChunk, loadAreaLastChunk, loadAreaSize;
         u32 nextPhysChunk;
@@ -538,7 +541,7 @@ static void __init build_iSeries_Memory_Map(void)
          * which should be equal to
          *   nextPhysChunk
          */
-        systemcfg->physicalMemorySize = chunk_to_addr(nextPhysChunk);
+        return chunk_to_addr(nextPhysChunk);
 }
 
 /*
@@ -564,8 +567,8 @@ static void __init iSeries_setup_arch(void)
         printk("Max physical processors = %d\n",
                         itVpdAreas.xSlicMaxPhysicalProcs);
 
-        systemcfg->processor = xIoHriProcessorVpd[procIx].xPVR;
-        printk("Processor version = %x\n", systemcfg->processor);
+        _systemcfg->processor = xIoHriProcessorVpd[procIx].xPVR;
+        printk("Processor version = %x\n", _systemcfg->processor);
 }
 
 static void iSeries_show_cpuinfo(struct seq_file *m)
@@ -929,7 +932,7 @@ void dt_cpus(struct iseries_flat_dt *dt)
         dt_end_node(dt);
 }
 
-void build_flat_dt(struct iseries_flat_dt *dt)
+void build_flat_dt(struct iseries_flat_dt *dt, unsigned long phys_mem_size)
 {
         u64 tmp[2];
 
@@ -945,7 +948,7 @@ void build_flat_dt(struct iseries_flat_dt *dt)
         dt_prop_str(dt, "name", "memory");
         dt_prop_str(dt, "device_type", "memory");
         tmp[0] = 0;
-        tmp[1] = systemcfg->physicalMemorySize;
+        tmp[1] = phys_mem_size;
         dt_prop_u64_list(dt, "reg", tmp, 2);
         dt_end_node(dt);
 
@@ -965,13 +968,15 @@ void build_flat_dt(struct iseries_flat_dt *dt)
 
 void * __init iSeries_early_setup(void)
 {
+        unsigned long phys_mem_size;
+
         iSeries_fixup_klimit();
 
         /*
          * Initialize the table which translate Linux physical addresses to
          * AS/400 absolute addresses
          */
-        build_iSeries_Memory_Map();
+        phys_mem_size = build_iSeries_Memory_Map();
 
         iSeries_get_cmdline();
 
@@ -981,7 +986,7 @@ void * __init iSeries_early_setup(void)
         /* Parse early parameters, in particular mem=x */
         parse_early_param();
 
-        build_flat_dt(&iseries_dt);
+        build_flat_dt(&iseries_dt, phys_mem_size);
 
         return (void *) __pa(&iseries_dt);
 }
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index b760836bb9d1..a33ba833109c 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -32,7 +32,6 @@
 #include <asm/machdep.h>
 #include <asm/ppc-pci.h>
 #include <asm/rtas.h>
-#include <asm/systemcfg.h>
 
 #undef DEBUG
 
@@ -1186,7 +1185,7 @@ static int __init eeh_init_proc(void)
 {
         struct proc_dir_entry *e;
 
-        if (systemcfg->platform & PLATFORM_PSERIES) {
+        if (platform_is_pseries()) {
                 e = create_proc_entry("ppc64/eeh", 0, NULL);
                 if (e)
                         e->proc_fops = &proc_eeh_operations;
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index fcc50bfd43fd..97ba5214417f 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -42,7 +42,6 @@
 #include <asm/machdep.h>
 #include <asm/abs_addr.h>
 #include <asm/pSeries_reconfig.h>
-#include <asm/systemcfg.h>
 #include <asm/firmware.h>
 #include <asm/tce.h>
 #include <asm/ppc-pci.h>
@@ -582,7 +581,7 @@ void iommu_init_early_pSeries(void)
                 return;
         }
 
-        if (systemcfg->platform & PLATFORM_LPAR) {
+        if (platform_is_lpar()) {
                 if (firmware_has_feature(FW_FEATURE_MULTITCE)) {
                         ppc_md.tce_build = tce_buildmulti_pSeriesLP;
                         ppc_md.tce_free  = tce_freemulti_pSeriesLP;
diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c
index c198656a3bb5..6b0772f35692 100644
--- a/arch/powerpc/platforms/pseries/pci.c
+++ b/arch/powerpc/platforms/pseries/pci.c
@@ -123,7 +123,7 @@ static void fixup_winbond_82c105(struct pci_dev* dev)
         int i;
         unsigned int reg;
 
-        if (!(systemcfg->platform & PLATFORM_PSERIES))
+        if (!platform_is_pseries())
                 return;
 
         printk("Using INTC for W82c105 IDE controller.\n");
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index d7d400339458..d8864164dbe8 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -408,7 +408,7 @@ static int proc_ppc64_create_ofdt(void)
 {
         struct proc_dir_entry *ent;
 
-        if (!(systemcfg->platform & PLATFORM_PSERIES))
+        if (!platform_is_pseries())
                 return 0;
 
         ent = create_proc_entry("ppc64/ofdt", S_IWUSR, NULL);
diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c
index e26b0420b6dd..00cf331a1dc4 100644
--- a/arch/powerpc/platforms/pseries/rtasd.c
+++ b/arch/powerpc/platforms/pseries/rtasd.c
@@ -482,10 +482,12 @@ static int __init rtas_init(void)
 {
         struct proc_dir_entry *entry;
 
-        /* No RTAS, only warn if we are on a pSeries box  */
+        if (!platform_is_pseries())
+                return 0;
+
+        /* No RTAS */
         if (rtas_token("event-scan") == RTAS_UNKNOWN_SERVICE) {
-                if (systemcfg->platform & PLATFORM_PSERIES)
-                        printk(KERN_INFO "rtasd: no event-scan on system\n");
+                printk(KERN_INFO "rtasd: no event-scan on system\n");
                 return 1;
         }
 
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index a093a0d4dd69..e94247c28d42 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -249,7 +249,7 @@ static void __init pSeries_setup_arch(void)
                 ppc_md.idle_loop = default_idle;
         }
 
-        if (systemcfg->platform & PLATFORM_LPAR)
+        if (platform_is_lpar())
                 ppc_md.enable_pmcs = pseries_lpar_enable_pmcs;
         else
                 ppc_md.enable_pmcs = power4_enable_pmcs;
@@ -378,7 +378,7 @@ static void __init pSeries_init_early(void)
 
         fw_feature_init();
         
-        if (systemcfg->platform & PLATFORM_LPAR)
+        if (platform_is_lpar())
                 hpte_init_lpar();
         else {
                 hpte_init_native();
@@ -388,7 +388,7 @@ static void __init pSeries_init_early(void)
 
         generic_find_legacy_serial_ports(&physport, &default_speed);
 
-        if (systemcfg->platform & PLATFORM_LPAR)
+        if (platform_is_lpar())
                 find_udbg_vterm();
         else if (physport) {
                 /* Map the uart for udbg. */
@@ -592,7 +592,7 @@ static void pseries_shared_idle(void)
 
 static int pSeries_pci_probe_mode(struct pci_bus *bus)
 {
-        if (systemcfg->platform & PLATFORM_LPAR)
+        if (platform_is_lpar())
                 return PCI_PROBE_DEVTREE;
         return PCI_PROBE_NORMAL;
 }
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 7a243e8ccd7e..3ba794ca3288 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -46,6 +46,7 @@
 #include <asm/rtas.h>
 #include <asm/pSeries_reconfig.h>
 #include <asm/mpic.h>
+#include <asm/systemcfg.h>
 
 #include "plpar_wrappers.h"
 
@@ -96,7 +97,7 @@ int pSeries_cpu_disable(void)
         int cpu = smp_processor_id();
 
         cpu_clear(cpu, cpu_online_map);
-        systemcfg->processorCount--;
+        _systemcfg->processorCount--;
 
         /*fix boot_cpuid here*/
         if (cpu == boot_cpuid)
@@ -441,7 +442,7 @@ void __init smp_init_pSeries(void)
         smp_ops->cpu_die = pSeries_cpu_die;
 
         /* Processors can be added/removed only on LPAR */
-        if (systemcfg->platform == PLATFORM_PSERIES_LPAR)
+        if (platform_is_lpar())
                 pSeries_reconfig_notifier_register(&pSeries_smp_nb);
 #endif
 
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 405c4f3229b3..72ac18067ece 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -545,7 +545,9 @@ nextnode:
                 of_node_put(np);
         }
 
-        if (systemcfg->platform == PLATFORM_PSERIES) {
+        if (platform_is_lpar())
+                ops = &pSeriesLP_ops;
+        else {
 #ifdef CONFIG_SMP
                 for_each_cpu(i) {
                         int hard_id;
@@ -561,8 +563,6 @@ nextnode:
 #else
                 xics_per_cpu[0] = ioremap(intr_base, intr_size);
 #endif /* CONFIG_SMP */
-        } else if (systemcfg->platform == PLATFORM_PSERIES_LPAR) {
-                ops = &pSeriesLP_ops;
         }
 
         xics_8259_pic.enable = i8259_pic.enable;