Linux_SDK_V0.9.5Linux_SDK_V0.9.5

1 files changed, 47 insertions, 0 deletions

diff --git a/common/init/handoff.c b/common/init/handoff.c
new file mode 100644
index 00000000..e00b43e6
--- /dev/null
+++ b/common/init/handoff.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Passing basic information from SPL to U-Boot proper
+ *
+ * Copyright 2018 Google, Inc
+ */
+
+#include <common.h>
+#include <handoff.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void handoff_save_dram(struct spl_handoff *ho)
+{
+	ho->ram_size = gd->ram_size;
+#ifdef CONFIG_NR_DRAM_BANKS
+	{
+		struct bd_info *bd = gd->bd;
+		int i;
+
+		for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+			ho->ram_bank[i].start = bd->bi_dram[i].start;
+			ho->ram_bank[i].size = bd->bi_dram[i].size;
+		}
+	}
+#endif
+}
+
+void handoff_load_dram_size(struct spl_handoff *ho)
+{
+	gd->ram_size = ho->ram_size;
+}
+
+void handoff_load_dram_banks(struct spl_handoff *ho)
+{
+#ifdef CONFIG_NR_DRAM_BANKS
+	{
+		struct bd_info *bd = gd->bd;
+		int i;
+
+		for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+			bd->bi_dram[i].start = ho->ram_bank[i].start;
+			bd->bi_dram[i].size = ho->ram_bank[i].size;
+		}
+	}
+#endif
+}