[U-Boot] [PATCH 64/82] x86: ivybridge: Provide a dummy SDRAM init for 64-bit

[Simon Glass]

We don't support SDRAM init in 64-bit mode since it is essentially
impossible to get into that mode before SDRAM set up. Provide dummy functions
for now. At some point we will need to pass the SDRAM parameters through from
SPL.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/x86/cpu/ivybridge/Makefile    |  3 +++
 arch/x86/cpu/ivybridge/sdram_nop.c | 29 +++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 arch/x86/cpu/ivybridge/sdram_nop.c

diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile
index 8bebcf8..2de11fc 100644
--- a/arch/x86/cpu/ivybridge/Makefile
+++ b/arch/x86/cpu/ivybridge/Makefile
@@ -17,5 +17,8 @@ ifndef CONFIG_SPL_BUILD
 obj-y += sata.o
 endif
 obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += sdram.o
+ifndef CONFIG_$(SPL_)X86_32BIT_INIT
+obj-y += sdram_nop.o
+endif
 endif
 obj-y += bd82x6x.o
diff --git a/arch/x86/cpu/ivybridge/sdram_nop.c b/arch/x86/cpu/ivybridge/sdram_nop.c
new file mode 100644
index 0000000..edb3cb1
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/sdram_nop.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2016 Google, Inc
+ *
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->ram_size = 1ULL << 31;
+	gd->bd->bi_dram[0].start = 0;
+	gd->bd->bi_dram[0].size = gd->ram_size;
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	return 0;
+}
+
+int print_cpuinfo(void)
+{
+	return 0;
+}
-- 
2.8.0.rc3.226.g39d4020