[dora][PATCH] Qemu:Arm:versatilepb: Add memory size checking

[Mark Hatle <mark.hatle@windriver.com>]

From: Jiang Lu <lu.jiang@windriver.com>

The machine can not work with memory over 256M, so add a checking
at startup. If the memory size exceed 256M, just stop emulation then
throw out warning about memory limitation.

Signed-off-by: Jiang Lu <lu.jiang@windriver.com>
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Jeff Polk <jeff.polk@windriver.com>
---
 ...-Arm-versatilepb-Add-memory-size-checking.patch | 34 ++++++++++++++++++++++
 meta/recipes-devtools/qemu/qemu_1.5.0.bb           |  1 +
 2 files changed, 35 insertions(+)
 create mode 100644 meta/recipes-devtools/qemu/files/Qemu-Arm-versatilepb-Add-memory-size-checking.patch

diff --git a/meta/recipes-devtools/qemu/files/Qemu-Arm-versatilepb-Add-memory-size-checking.patch b/meta/recipes-devtools/qemu/files/Qemu-Arm-versatilepb-Add-memory-size-checking.patch
new file mode 100644
index 0000000..ef1090b
--- /dev/null
+++ b/meta/recipes-devtools/qemu/files/Qemu-Arm-versatilepb-Add-memory-size-checking.patch
@@ -0,0 +1,34 @@
+From 896fa02c24347e6e9259812cfda187b1d6ca6199 Mon Sep 17 00:00:00 2001
+From: Jiang Lu <lu.jiang@windriver.com>
+Date: Wed, 13 Nov 2013 10:38:08 +0800
+Subject: [PATCH] Qemu:Arm:versatilepb: Add memory size checking
+
+The machine can not work with memory over 256M, so add a checking
+at startup. If the memory size exceed 256M, just stop emulation then
+throw out warning about memory limitation.
+
+Signed-off-by: Jiang Lu <lu.jiang@windriver.com>
+---
+ hw/arm/versatilepb.c |    6 ++++++
+ 1 files changed, 6 insertions(+), 0 deletions(-)
+
+diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
+index 753757e..0906377 100644
+--- a/hw/arm/versatilepb.c
++++ b/hw/arm/versatilepb.c
+@@ -193,6 +193,12 @@ static void versatile_init(QEMUMachineInitArgs *args, int board_id)
+         fprintf(stderr, "Unable to find CPU definition\n");
+         exit(1);
+     }
++    if (ram_size > (256 << 20)) {
++        fprintf(stderr,
++                "qemu: Too much memory for this machine: %d MB, maximum 256 MB\n",
++                ((unsigned int)ram_size / (1 << 20)));
++        exit(1);
++    }
+     memory_region_init_ram(ram, "versatile.ram", args->ram_size);
+     vmstate_register_ram_global(ram);
+     /* ??? RAM should repeat to fill physical memory space.  */
+-- 
+1.7.1
+
diff --git a/meta/recipes-devtools/qemu/qemu_1.5.0.bb b/meta/recipes-devtools/qemu/qemu_1.5.0.bb
index 06c2cdb..f8c60e8 100644
--- a/meta/recipes-devtools/qemu/qemu_1.5.0.bb
+++ b/meta/recipes-devtools/qemu/qemu_1.5.0.bb
@@ -7,6 +7,7 @@ SRC_URI += "file://fdt_header.patch \
             file://target-i386-Fix-aflag-logic-for-CODE64-and-the-0x67-.patch \
             file://target-ppc_fix_bit_extraction.patch \
             file://fxrstorssefix.patch \
+            file://Qemu-Arm-versatilepb-Add-memory-size-checking.patch \
            "
 
 SRC_URI_prepend = "http://wiki.qemu.org/download/qemu-${PV}.tar.bz2"
-- 
1.8.1.2.545.g2f19ada