[U-Boot] [PATCH v3 43/62] 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>
---

Changes in v3:
- Put dummy misc_init_r() and print_cpuinfo() functions into cpu.c
- Drop duplicate comment line in header

Changes in v2: None

 arch/x86/cpu/ivybridge/Makefile    |  3 +++
 arch/x86/cpu/ivybridge/sdram_nop.c | 18 ++++++++++++++++++
 arch/x86/cpu/x86_64/cpu.c          | 10 ++++++++++
 3 files changed, 31 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 1a526c8f0f5..25fbd599db0 100644
--- a/arch/x86/cpu/ivybridge/Makefile
+++ b/arch/x86/cpu/ivybridge/Makefile
@@ -16,5 +16,8 @@ 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 00000000000..bd1189e4471
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/sdram_nop.c
@@ -0,0 +1,18 @@
+/*
+ * 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;
+}
diff --git a/arch/x86/cpu/x86_64/cpu.c b/arch/x86/cpu/x86_64/cpu.c
index 36272296e63..77cbb567c45 100644
--- a/arch/x86/cpu/x86_64/cpu.c
+++ b/arch/x86/cpu/x86_64/cpu.c
@@ -59,3 +59,13 @@ int x86_mp_init(void)
 	/* Not implemented */
 	return 0;
 }
+
+int misc_init_r(void)
+{
+	return 0;
+}
+
+int print_cpuinfo(void)
+{
+	return 0;
+}
-- 
2.11.0.483.g087da7b7c-goog