arm64: mvebu: armada-8k: move dram init code

Move Armada-8k specific DRAM init code into armada-8k specific
directory.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NStefan Roese <sr@denx.de>

arch/arm/mach-mvebu/arm64-common.c

@@ -45,54 +45,12 @@ const struct mbus_dram_target_info *mvebu_mbus_dram_info(void)
 	return NULL;
 }
 
-/* DRAM init code ... */
-
-#define MV_SIP_DRAM_SIZE	0x82000010
-
-static u64 a8k_dram_scan_ap_sz(void)
-{
-	struct pt_regs pregs;
-
-	pregs.regs[0] = MV_SIP_DRAM_SIZE;
-	pregs.regs[1] = SOC_REGS_PHY_BASE;
-	smc_call(&pregs);
-
-	return pregs.regs[0];
-}
-
-static void a8k_dram_init_banksize(void)
-{
-	/*
-	 * The firmware (ATF) leaves a 1G whole above the 3G mark for IO
-	 * devices. Higher RAM is mapped at 4G.
-	 *
-	 * Config 2 DRAM banks:
-	 * Bank 0 - max size 4G - 1G
-	 * Bank 1 - ram size - 4G + 1G
-	 */
-	phys_size_t max_bank0_size = SZ_4G - SZ_1G;
-
-	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
-	if (gd->ram_size <= max_bank0_size) {
-		gd->bd->bi_dram[0].size = gd->ram_size;
-		return;
-	}
-
-	gd->bd->bi_dram[0].size = max_bank0_size;
-	if (CONFIG_NR_DRAM_BANKS > 1) {
-		gd->bd->bi_dram[1].start = SZ_4G;
-		gd->bd->bi_dram[1].size = gd->ram_size - max_bank0_size;
-	}
-}
-
 __weak int dram_init_banksize(void)
 {
 	if (CONFIG_IS_ENABLED(ARMADA_8K))
-		a8k_dram_init_banksize();
+		return a8k_dram_init_banksize();
 	else
-		fdtdec_setup_memory_banksize();
-
-	return 0;
+		return fdtdec_setup_memory_banksize();
 }
 
 __weak int dram_init(void)

arch/arm/mach-mvebu/armada8k/Makefile

@@ -2,5 +2,4 @@
 #
 # Copyright (C) 2016 Stefan Roese <sr@denx.de>
 
-obj-y = cpu.o
-obj-y += cache_llc.o
+obj-y = cpu.o cache_llc.o dram.o

arch/arm/mach-mvebu/armada8k/dram.c

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ */
+
+#include <common.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+#include <asm/system.h>
+#include <linux/sizes.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define MV_SIP_DRAM_SIZE	0x82000010
+
+u64 a8k_dram_scan_ap_sz(void)
+{
+	struct pt_regs pregs;
+
+	pregs.regs[0] = MV_SIP_DRAM_SIZE;
+	pregs.regs[1] = SOC_REGS_PHY_BASE;
+	smc_call(&pregs);
+
+	return pregs.regs[0];
+}
+
+int a8k_dram_init_banksize(void)
+{
+	/*
+	 * The firmware (ATF) leaves a 1G whole above the 3G mark for IO
+	 * devices. Higher RAM is mapped at 4G.
+	 *
+	 * Config 2 DRAM banks:
+	 * Bank 0 - max size 4G - 1G
+	 * Bank 1 - ram size - 4G + 1G
+	 */
+	phys_size_t max_bank0_size = SZ_4G - SZ_1G;
+
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	if (gd->ram_size <= max_bank0_size) {
+		gd->bd->bi_dram[0].size = gd->ram_size;
+		return 0;
+	}
+
+	gd->bd->bi_dram[0].size = max_bank0_size;
+	if (CONFIG_NR_DRAM_BANKS > 1) {
+		gd->bd->bi_dram[1].start = SZ_4G;
+		gd->bd->bi_dram[1].size = gd->ram_size - max_bank0_size;
+	}
+
+	return 0;
+}

arch/arm/mach-mvebu/include/mach/cpu.h

@@ -172,6 +172,10 @@ static inline void mv_avs_init(void) {}
 static inline void mv_rtc_config(void) {}
 #endif
 
+/* A8K dram functions */
+u64 a8k_dram_scan_ap_sz(void);
+int a8k_dram_init_banksize(void);
+
 /*
  * get_ref_clk
  *