ARM: uniphier: split ft_board_setup() out to a separate file

Prepare to add more fdt fixup code.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/Kconfig

@@ -1223,6 +1223,7 @@ config ARCH_UNIPHIER
 	select DM_RESET
 	select DM_SERIAL
 	select DM_USB
+	select OF_BOARD_SETUP
 	select OF_CONTROL
 	select OF_LIBFDT
 	select PINCTRL

arch/arm/mach-uniphier/Kconfig

@@ -68,7 +68,6 @@ config ARCH_UNIPHIER_LD11
 config ARCH_UNIPHIER_LD20
 	bool "Enable UniPhier LD20 SoC support"
 	depends on ARCH_UNIPHIER_V8_MULTI
-	select OF_BOARD_SETUP
 	default y
 
 config ARCH_UNIPHIER_PXS3

arch/arm/mach-uniphier/Makefile

@@ -21,6 +21,7 @@ endif
 obj-$(CONFIG_MICRO_SUPPORT_CARD) += sbc/ micro-support-card.o
 obj-y += pinctrl-glue.o
 obj-$(CONFIG_MMC) += mmc-first-dev.o
+obj-y += fdt-fixup.o
 
 endif
 

arch/arm/mach-uniphier/dram_init.c

@@ -6,8 +6,6 @@
  */
 
 #include <common.h>
-#include <fdt_support.h>
-#include <fdtdec.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <linux/printk.h>
@@ -264,36 +262,3 @@ int dram_init_banksize(void)
 
 	return 0;
 }
-
-#ifdef CONFIG_OF_BOARD_SETUP
-/*
- * The DRAM PHY requires 64 byte scratch area in each DRAM channel
- * for its dynamic PHY training feature.
- */
-int ft_board_setup(void *fdt, bd_t *bd)
-{
-	unsigned long rsv_addr;
-	const unsigned long rsv_size = 64;
-	int i, ret;
-
-	if (uniphier_get_soc_id() != UNIPHIER_LD20_ID)
-		return 0;
-
-	for (i = 0; i < ARRAY_SIZE(bd->bi_dram); i++) {
-		if (!bd->bi_dram[i].size)
-			continue;
-
-		rsv_addr = bd->bi_dram[i].start + bd->bi_dram[i].size;
-		rsv_addr -= rsv_size;
-
-		ret = fdt_add_mem_rsv(fdt, rsv_addr, rsv_size);
-		if (ret)
-			return -ENOSPC;
-
-		pr_notice("   Reserved memory region for DRAM PHY training: addr=%lx size=%lx\n",
-			  rsv_addr, rsv_size);
-	}
-
-	return 0;
-}
-#endif

arch/arm/mach-uniphier/fdt-fixup.c

@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016-2018 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#include <common.h>
+#include <fdt_support.h>
+#include <fdtdec.h>
+#include <linux/kernel.h>
+#include <linux/printk.h>
+
+#include "soc-info.h"
+
+/*
+ * The DRAM PHY requires 64 byte scratch area in each DRAM channel
+ * for its dynamic PHY training feature.
+ */
+static int uniphier_ld20_fdt_mem_rsv(void *fdt, bd_t *bd)
+{
+	unsigned long rsv_addr;
+	const unsigned long rsv_size = 64;
+	int i, ret;
+
+	if (!IS_ENABLED(CONFIG_ARCH_UNIPHIER_LD20) ||
+	    uniphier_get_soc_id() != UNIPHIER_LD20_ID)
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(bd->bi_dram); i++) {
+		if (!bd->bi_dram[i].size)
+			continue;
+
+		rsv_addr = bd->bi_dram[i].start + bd->bi_dram[i].size;
+		rsv_addr -= rsv_size;
+
+		ret = fdt_add_mem_rsv(fdt, rsv_addr, rsv_size);
+		if (ret)
+			return -ENOSPC;
+
+		pr_notice("   Reserved memory region for DRAM PHY training: addr=%lx size=%lx\n",
+			  rsv_addr, rsv_size);
+	}
+
+	return 0;
+}
+
+int ft_board_setup(void *fdt, bd_t *bd)
+{
+	int ret;
+
+	ret = uniphier_ld20_fdt_mem_rsv(fdt, bd);
+	if (ret)
+		return ret;
+
+	return 0;
+}