powerpc: Move 32-bit probe() machine to later in the boot process

This converts all the 32-bit platforms to use the expanded device-tree
which is a pretty mechanical change. Unlike 64-bit, the 32-bit kernel
didn't rely on platform initializations to setup the MMU since it
sets it up entirely before probe_machine() so the move has comparatively
less consequences though it's a bigger patch.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 19 insertions, 16 deletions

diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 3f0aca2b7f63..e7bb4e76896a 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -113,23 +113,7 @@ notrace void __init machine_init(u64 dt_ptr)
 
 	early_init_mmu();
 
-	probe_machine();
-
 	setup_kdump_trampoline();
-
-#ifdef CONFIG_6xx
-	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
-	    cpu_has_feature(CPU_FTR_CAN_NAP))
-		ppc_md.power_save = ppc6xx_idle;
-#endif
-
-#ifdef CONFIG_E500
-	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
-	    cpu_has_feature(CPU_FTR_CAN_NAP))
-		ppc_md.power_save = e500_idle;
-#endif
-	if (ppc_md.progress)
-		ppc_md.progress("id mach(): done", 0x200);
 }
 
 /* Checks "l2cr=xxxx" command-line option */
@@ -249,6 +233,21 @@ static void __init exc_lvl_early_init(void)
 #define exc_lvl_early_init()
 #endif
 
+static void setup_power_save(void)
+{
+#ifdef CONFIG_6xx
+	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
+	    cpu_has_feature(CPU_FTR_CAN_NAP))
+		ppc_md.power_save = ppc6xx_idle;
+#endif
+
+#ifdef CONFIG_E500
+	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
+	    cpu_has_feature(CPU_FTR_CAN_NAP))
+		ppc_md.power_save = e500_idle;
+#endif
+}
+
 /* Warning, IO base is not yet inited */
 void __init setup_arch(char **cmdline_p)
 {
@@ -260,6 +259,10 @@ void __init setup_arch(char **cmdline_p)
 	unflatten_device_tree();
 	check_for_initrd();
 
+	probe_machine();
+
+	setup_power_save();
+
 	if (ppc_md.init_early)
 		ppc_md.init_early();