[PATCH] powerpc: Kill _machine and hard-coded platform numbers

This removes statically assigned platform numbers and reworks the
powerpc platform probe code to use a better mechanism.  With this,
board support files can simply declare a new machine type with a
macro, and implement a probe() function that uses the flattened
device-tree to detect if they apply for a given machine.

We now have a machine_is() macro that replaces the comparisons of
_machine with the various PLATFORM_* constants.  This commit also
changes various drivers to use the new macro instead of looking at
_machine.

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

1 files changed, 3 insertions, 4 deletions

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 89b35c181314..c006d9039633 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -167,7 +167,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
                  * normal insert callback here.
                  */
 #ifdef CONFIG_PPC_ISERIES
-                if (_machine == PLATFORM_ISERIES_LPAR)
+                if (machine_is(iseries))
                         ret = iSeries_hpte_insert(hpteg, va,
                                                   paddr,
                                                   tmp_mode,
@@ -176,7 +176,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
                 else
 #endif
 #ifdef CONFIG_PPC_PSERIES
-                if (_machine & PLATFORM_LPAR)
+                if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR))
                         ret = pSeries_lpar_hpte_insert(hpteg, va,
                                                        paddr,
                                                        tmp_mode,
@@ -295,8 +295,7 @@ static void __init htab_init_page_sizes(void)
          * Not in the device-tree, let's fallback on known size
          * list for 16M capable GP & GR
          */
-        if ((_machine != PLATFORM_ISERIES_LPAR) &&
-            cpu_has_feature(CPU_FTR_16M_PAGE))
+        if (cpu_has_feature(CPU_FTR_16M_PAGE) && !machine_is(iseries))
                 memcpy(mmu_psize_defs, mmu_psize_defaults_gp,
                        sizeof(mmu_psize_defaults_gp));
  found: