powerpc/32s: Make Hash var static

Hash var is used only locally in mmu.c now.

No need to set it in head_32.S anymore.

Make it static and initialises it to the early hash table.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/786c82a89cdfdaabb32b72a44f7c312fa81d192b.1603348103.git.christophe.leroy@csgroup.eu

arch/powerpc/kernel/head_book3s_32.S

@@ -155,10 +155,8 @@ __after_mmu_off:
 
 	bl	initial_bats
 	bl	load_segment_registers
-BEGIN_MMU_FTR_SECTION
 	bl	reloc_offset
 	bl	early_hash_table
-END_MMU_FTR_SECTION_IFSET(MMU_FTR_HPTE_TABLE)
 #if defined(CONFIG_BOOTX_TEXT)
 	bl	setup_disp_bat
 #endif
@@ -922,9 +920,6 @@ early_hash_table:
 	lis	r6, early_hash - PAGE_OFFSET@h
 	ori	r6, r6, 3	/* 256kB table */
 	mtspr	SPRN_SDR1, r6
-	lis	r6, early_hash@h
-	addis	r3, r3, Hash@ha
-	stw	r6, Hash@l(r3)
 	blr
 
 load_up_mmu:

arch/powerpc/mm/book3s32/mmu.c

@@ -33,7 +33,7 @@
 
 u8 __initdata early_hash[SZ_256K] __aligned(SZ_256K) = {0};
 
-struct hash_pte *Hash;
+static struct hash_pte *Hash = (struct hash_pte *)early_hash;
 static unsigned long Hash_size, Hash_mask;
 unsigned long _SDR1;
 static unsigned int hash_mb, hash_mb2;

arch/powerpc/mm/mmu_decl.h

@@ -99,7 +99,6 @@ extern int __map_without_bats;
 extern unsigned int rtas_data, rtas_size;
 
 struct hash_pte;
-extern struct hash_pte *Hash;
 extern u8 early_hash[];
 
 #endif /* CONFIG_PPC32 */