[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, 12 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 9c718bb2305e..23a201718704 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -292,6 +292,10 @@ void __init chrp_setup_arch(void)
 
         pci_create_OF_bus_map();
 
+#ifdef CONFIG_SMP
+        smp_ops = &chrp_smp_ops;
+#endif /* CONFIG_SMP */
+
         /*
          * Print the banner, then scroll down so boot progress
          * can be printed.  -- Cort
@@ -506,8 +510,15 @@ chrp_init2(void)
                 ppc_md.progress("  Have fun!    ", 0x7777);
 }
 
-void __init chrp_init(void)
+static int __init chrp_probe(void)
 {
+        char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(),
+                                          "device_type", NULL);
+        if (dtype == NULL)
+                return 0;
+        if (strcmp(dtype, "chrp"))
+                return 0;
+
         ISA_DMA_THRESHOLD = ~0L;
         DMA_MODE_READ = 0x44;
         DMA_MODE_WRITE = 0x48;