powerpc/mm: Add mmu_early_init_devtree()
Empty for now, but we'll add to it in the next patch.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h
index d4eda64..4eb4bd0 100644
--- a/arch/powerpc/include/asm/book3s/64/mmu.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu.h
@@ -107,6 +107,7 @@
extern int mmu_io_psize;
/* MMU initialization */
+void mmu_early_init_devtree(void);
extern void radix_init_native(void);
extern void hash__early_init_mmu(void);
extern void radix__early_init_mmu(void);
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 5447122..14220c5 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -210,6 +210,7 @@
extern void early_init_mmu_secondary(void);
extern void setup_initial_memory_limit(phys_addr_t first_memblock_base,
phys_addr_t first_memblock_size);
+static inline void mmu_early_init_devtree(void) { }
#endif /* __ASSEMBLY__ */
#endif
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index bae3db7..9686984 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -750,6 +750,8 @@
if (disable_radix)
cur_cpu_spec->mmu_features &= ~MMU_FTR_RADIX;
+ mmu_early_init_devtree();
+
#ifdef CONFIG_PPC_POWERNV
/* Scan and build the list of machine check recoverable ranges */
of_scan_flat_dt(early_init_dt_scan_recoverable_ranges, NULL);
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 33709bd..d0fb33a 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -411,3 +411,9 @@
EXPORT_SYMBOL_GPL(realmode_pfn_to_page);
#endif /* CONFIG_SPARSEMEM_VMEMMAP/CONFIG_FLATMEM */
+
+#ifdef CONFIG_PPC_STD_MMU_64
+void __init mmu_early_init_devtree(void)
+{
+}
+#endif /* CONFIG_PPC_STD_MMU_64 */