From 04ea9147d5bdab1370ced118acf35db7ac9e281c Mon Sep 17 00:00:00 2001
From: Tingting Meng <tingting.meng@altera.com>
Date: Fri, 21 Feb 2025 21:49:41 +0800
Subject: ddr: altera: Add DDR driver for Agilex5 series

Adding DDR driver support for Agilex5 series.

Signed-off-by: Tingting Meng <tingting.meng@altera.com>
---
 arch/arm/mach-socfpga/misc.c | 36 ++++++++++++++++++++++++------------
 1 file changed, 24 insertions(+), 12 deletions(-)

(limited to 'arch/arm/mach-socfpga/misc.c')

diff --git a/arch/arm/mach-socfpga/misc.c b/arch/arm/mach-socfpga/misc.c
index fbe3af845d8..97e01140513 100644
--- a/arch/arm/mach-socfpga/misc.c
+++ b/arch/arm/mach-socfpga/misc.c
@@ -5,27 +5,29 @@
 
 #include <config.h>
 #include <command.h>
-#include <cpu_func.h>
-#include <hang.h>
-#include <asm/cache.h>
-#include <init.h>
-#include <asm/global_data.h>
-#include <asm/io.h>
 #include <errno.h>
+#include <init.h>
+#include <handoff.h>
+#include <hang.h>
+#include <watchdog.h>
 #include <fdtdec.h>
 #include <linux/libfdt.h>
-#include <altera.h>
+#include <linux/printk.h>
 #include <miiphy.h>
 #include <netdev.h>
-#include <watchdog.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/cache.h>
+#include <asm/pl310.h>
 #include <asm/arch/misc.h>
+#include <asm/arch/nic301.h>
 #include <asm/arch/reset_manager.h>
 #include <asm/arch/scan_manager.h>
-#include <asm/arch/system_manager.h>
-#include <asm/arch/nic301.h>
 #include <asm/arch/scu.h>
-#include <asm/pl310.h>
-#include <linux/printk.h>
+#include <asm/arch/system_manager.h>
+#include <altera.h>
+#include <bloblist.h>
+#include <cpu_func.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -51,8 +53,18 @@ struct bsel bsel_str[] = {
 
 int dram_init(void)
 {
+#if CONFIG_IS_ENABLED(HANDOFF) && IS_ENABLED(CONFIG_TARGET_SOCFPGA_AGILEX5)
+	struct spl_handoff *ho;
+
+	ho = bloblist_find(BLOBLISTT_U_BOOT_SPL_HANDOFF, sizeof(*ho));
+	if (!ho)
+		return log_msg_ret("Missing SPL hand-off info", -ENOENT);
+	gd->ram_size = ho->ram_bank[0].size;
+	gd->ram_base = ho->ram_bank[0].start;
+#else
 	if (fdtdec_setup_mem_size_base() != 0)
 		return -EINVAL;
+#endif /* HANDOFF && CONFIG_TARGET_SOCFPGA_AGILEX5 */
 
 	return 0;
 }
-- 
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