ppc: Remove CHRP, POWER3 and POWER4 support from arch/ppc

32-bit CHRP machines are now supported only in arch/powerpc, as are
all 64-bit PowerPC processors.  This means that we don't use
Open Firmware on any platform in arch/ppc any more.

This makes PReP support a single-platform option like every other
platform support option in arch/ppc now, thus CONFIG_PPC_MULTIPLATFORM
is gone from arch/ppc.  CONFIG_PPC_PREP is the option that selects
PReP support and is generally what has replaced
CONFIG_PPC_MULTIPLATFORM within arch/ppc.

_machine is all but dead now, being #defined to 0.

Updated Makefiles, comments and Kconfig options generally to reflect
these changes.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 1 insertions, 27 deletions

diff --git a/arch/ppc/mm/ppc_mmu.c b/arch/ppc/mm/ppc_mmu.c
index 9a381ed5eb21..25bb6f3347c1 100644
--- a/arch/ppc/mm/ppc_mmu.c
+++ b/arch/ppc/mm/ppc_mmu.c
@@ -2,7 +2,7 @@
  * This file contains the routines for handling the MMU on those
  * PowerPC implementations where the MMU substantially follows the
  * architecture specification.  This includes the 6xx, 7xx, 7xxx,
- * 8260, and POWER3 implementations but excludes the 8xx and 4xx.
+ * 8260, and 83xx implementations but excludes the 8xx and 4xx.
  *  -- paulus
  *
  *  Derived from arch/ppc/mm/init.c:
@@ -42,11 +42,7 @@ unsigned long _SDR1;
 
 union ubat {                    /* BAT register values to be loaded */
         BAT     bat;
-#ifdef CONFIG_PPC64BRIDGE
-        u64     word[2];
-#else
         u32     word[2];
-#endif
 } BATS[4][2];                   /* 4 pairs of IBAT, DBAT */
 
 struct batrange {               /* stores address ranges mapped by BATs */
@@ -83,9 +79,6 @@ unsigned long p_mapped_by_bats(unsigned long pa)
 
 unsigned long __init mmu_mapin_ram(void)
 {
-#ifdef CONFIG_POWER4
-        return 0;
-#else
         unsigned long tot, bl, done;
         unsigned long max_size = (256<<20);
         unsigned long align;
@@ -122,7 +115,6 @@ unsigned long __init mmu_mapin_ram(void)
         }
 
         return done;
-#endif
 }
 
 /*
@@ -205,27 +197,10 @@ void __init MMU_init_hw(void)
 
         if ( ppc_md.progress ) ppc_md.progress("hash:enter", 0x105);
 
-#ifdef CONFIG_PPC64BRIDGE
-#define LG_HPTEG_SIZE   7               /* 128 bytes per HPTEG */
-#define SDR1_LOW_BITS   (lg_n_hpteg - 11)
-#define MIN_N_HPTEG     2048            /* min 256kB hash table */
-#else
 #define LG_HPTEG_SIZE   6               /* 64 bytes per HPTEG */
 #define SDR1_LOW_BITS   ((n_hpteg - 1) >> 10)
 #define MIN_N_HPTEG     1024            /* min 64kB hash table */
-#endif
-
-#ifdef CONFIG_POWER4
-        /* The hash table has already been allocated and initialized
-           in prom.c */
-        n_hpteg = Hash_size >> LG_HPTEG_SIZE;
-        lg_n_hpteg = __ilog2(n_hpteg);
-
-        /* Remove the hash table from the available memory */
-        if (Hash)
-                reserve_phys_mem(__pa(Hash), Hash_size);
 
-#else /* CONFIG_POWER4 */
         /*
          * Allow 1 HPTE (1/8 HPTEG) for each page of memory.
          * This is less than the recommended amount, but then
@@ -248,7 +223,6 @@ void __init MMU_init_hw(void)
         Hash = mem_pieces_find(Hash_size, Hash_size);
         cacheable_memzero(Hash, Hash_size);
         _SDR1 = __pa(Hash) | SDR1_LOW_BITS;
-#endif /* CONFIG_POWER4 */
 
         Hash_end = (PTE *) ((unsigned long)Hash + Hash_size);