ARM: rmobile: Unify memory map for RCar Gen3

Unify the R7A7795 and R8A7796 memory maps in memmap-gen3 and, for now,
select which one is used based on which SoC is selected. Since this is
done in C code instead of statically assigned now, the decision can be
taken by PRR SoC match as well, which will be done in a subsequent patch.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

arch/arm/mach-rmobile/Makefile

@@ -16,7 +16,7 @@ obj-$(CONFIG_R8A7791) += lowlevel_init_ca15.o cpu_info-rcar.o pfc-r8a7791.o
 obj-$(CONFIG_R8A7792) += lowlevel_init_ca15.o cpu_info-rcar.o pfc-r8a7792.o
 obj-$(CONFIG_R8A7793) += lowlevel_init_ca15.o cpu_info-rcar.o pfc-r8a7793.o
 obj-$(CONFIG_R8A7794) += lowlevel_init_ca15.o cpu_info-rcar.o pfc-r8a7794.o
-obj-$(CONFIG_R8A7795) += lowlevel_init_gen3.o cpu_info-rcar.o memmap-r8a7795.o
-obj-$(CONFIG_R8A7796) += lowlevel_init_gen3.o cpu_info-rcar.o memmap-r8a7796.o
+obj-$(CONFIG_R8A7795) += lowlevel_init_gen3.o cpu_info-rcar.o memmap-gen3.o
+obj-$(CONFIG_R8A7796) += lowlevel_init_gen3.o cpu_info-rcar.o memmap-gen3.o
 obj-$(CONFIG_SH73A0) += lowlevel_init.o cpu_info-sh73a0.o pfc-sh73a0.o
 obj-$(CONFIG_TMU_TIMER) += ../../sh/lib/time.o

arch/arm/mach-rmobile/cpu_info.c

@@ -18,6 +18,9 @@ int arch_cpu_init(void)
 #ifndef CONFIG_SYS_DCACHE_OFF
 void enable_caches(void)
 {
+#if defined(CONFIG_RCAR_GEN3)
+	rcar_gen3_memmap_fixup();
+#endif
 	dcache_enable();
 }
 #endif

arch/arm/mach-rmobile/include/mach/rmobile.h

@@ -38,6 +38,7 @@
 u32 rmobile_get_cpu_type(void);
 u32 rmobile_get_cpu_rev_integer(void);
 u32 rmobile_get_cpu_rev_fraction(void);
+void rcar_gen3_memmap_fixup(void);
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ASM_ARCH_RMOBILE_H */

arch/arm/mach-rmobile/memmap-r8a7795.c → arch/arm/mach-rmobile/memmap-gen3.c

 /*
- * Copyright (C) 2016 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Renesas RCar Gen3 memory map tables
+ *
+ * Copyright (C) 2017 Marek Vasut <marek.vasut@gmail.com>
  *
  * SPDX-License-Identifier: GPL-2.0+
  */
@@ -27,4 +29,38 @@ static struct mm_region r8a7795_mem_map[] = {
 	}
 };
 
+static struct mm_region r8a7796_mem_map[] = {
+	{
+		.virt = 0x0UL,
+		.phys = 0x0UL,
+		.size = 0xe0000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		.virt = 0xe0000000UL,
+		.phys = 0xe0000000UL,
+		.size = 0xe0000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
 struct mm_region *mem_map = r8a7795_mem_map;
+
+void rcar_gen3_memmap_fixup(void)
+{
+	u32 cpu_type = rmobile_get_cpu_type();
+
+	switch (cpu_type) {
+	case RMOBILE_CPU_TYPE_R8A7795:
+		mem_map = r8a7795_mem_map;
+		break;
+	case RMOBILE_CPU_TYPE_R8A7796:
+		mem_map = r8a7796_mem_map;
+		break;
+	}
+}

arch/arm/mach-rmobile/memmap-r8a7796.c

-/*
- * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/armv8/mmu.h>
-
-static struct mm_region r8a7796_mem_map[] = {
-	{
-		.virt = 0x0UL,
-		.phys = 0x0UL,
-		.size = 0xe0000000UL,
-		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
-			 PTE_BLOCK_INNER_SHARE
-	}, {
-		.virt = 0xe0000000UL,
-		.phys = 0xe0000000UL,
-		.size = 0xe0000000UL,
-		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
-			 PTE_BLOCK_NON_SHARE |
-			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
-	}, {
-		/* List terminator */
-		0,
-	}
-};
-
-struct mm_region *mem_map = r8a7796_mem_map;