commit d808a43d357371451c8ca4b4ad1a38f2251155c4
author Tom Wai-Hong Tam <waihong@chromium.org> Fri Jun 29 17:24:27 2012 +0800
committer Gerrit <chrome-bot@google.com> Mon Jul 02 06:19:39 2012 -0700
tree f4f60a9620c4a9b94c7858090d52c9a0fa540b14
parent dc6b642b47168a09fa1702092961595ab0674c03

crossystem: Add the ddr_type field on crossystem for querying DDR RAM type

Samsung want to know what memory type on the device. So this CL adds a
new field ddr_type to crossystem utility in order to query this info.

It is only available on ARM platform so far.

BUG=chrome-os-partner:10857
TEST=Built and boot on Snow successfuly. On userspace, query the field via:
localhost ~ # crossystem ddr_type
ddr3

Change-Id: I01d1dec412fe4052e1ea6cfe2e53830da97a710b
Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/26411
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

host/arch/arm/lib/crossystem_arch.c

diff --git a/host/arch/arm/lib/crossystem_arch.c b/host/arch/arm/lib/crossystem_arch.c
index a4d08af..7895bad 100644
--- a/host/arch/arm/lib/crossystem_arch.c
+++ b/host/arch/arm/lib/crossystem_arch.c
@@ -379,6 +379,8 @@
     prop = "firmware-type";
   else if (!strcasecmp(name, "ecfw_act"))
     prop = "active-ec-firmware";
+  else if (!strcasecmp(name, "ddr_type"))
+    prop = "ddr-type";
 
   if (prop)
     str = ReadFdtString(prop);

host/lib/crossystem.c

diff --git a/host/lib/crossystem.c b/host/lib/crossystem.c
index 80a3d3c..1515ecf 100644
--- a/host/lib/crossystem.c
+++ b/host/lib/crossystem.c
@@ -404,6 +404,8 @@
 
 
 const char* VbGetSystemPropertyString(const char* name, char* dest, int size) {
+  static const char unknown_string[] = "unknown";
+
   /* Check architecture-dependent properties first */
   if (VbGetArchPropertyString(name, dest, size))
     return dest;
@@ -425,6 +427,8 @@
     return GetVdatString(dest, size, VDAT_STRING_LOAD_FIRMWARE_DEBUG);
   } else if (!strcasecmp(name, "vdat_lkdebug")) {
     return GetVdatString(dest, size, VDAT_STRING_LOAD_KERNEL_DEBUG);
+  } else if (!strcasecmp(name, "ddr_type")) {
+    return unknown_string;
   }
 
   return NULL;

utility/crossystem_main.c

diff --git a/utility/crossystem_main.c b/utility/crossystem_main.c
index e7320c9..ecd1e4f 100644
--- a/utility/crossystem_main.c
+++ b/utility/crossystem_main.c
@@ -37,6 +37,7 @@
   {"arch", IS_STRING, "Platform architecture"},
   {"cros_debug", 0, "OS should allow debug features"},
   {"dbg_reset", CAN_WRITE, "Debug reset mode request (writable)"},
+  {"ddr_type", IS_STRING, "Type of DDR RAM"},
   {"disable_dev_request", CAN_WRITE, "Disable virtual dev-mode on next boot"},
   {"dev_boot_usb", CAN_WRITE,
    "Enable developer mode boot from USB/SD (writable)"},