[Qemu-devel] [PATCH v1 4/4] hw: Add support for a dummy ARMv7-M board

[Meador Inge]

This patch adds support for a "dummy" ARMv7-M board so that
QEMU can be used as an ISS for ARMv7-M processors.  For example,
running an image compiled for the Cortex-M3 with -cpu cortex-m3
should just work.

Signed-off-by: Meador Inge <address@hidden>
---
 hw/arm/Makefile.objs |    1 +
 hw/dummy_armv7m.c    |   40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 0 deletions(-)
 create mode 100644 hw/dummy_armv7m.c

diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index 2b39fb3..ba3811f 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -9,6 +9,7 @@ obj-y += exynos4210_pmu.o exynos4210_mct.o exynos4210_fimd.o
 obj-y += exynos4210_rtc.o exynos4210_i2c.o
 obj-y += arm_mptimer.o a15mpcore.o
 obj-y += armv7m.o armv7m_nvic.o stellaris.o stellaris_enet.o
+obj-y += dummy_armv7m.o
 obj-y += highbank.o
 obj-y += pxa2xx.o pxa2xx_pic.o pxa2xx_gpio.o pxa2xx_timer.o pxa2xx_dma.o
 obj-y += pxa2xx_lcd.o pxa2xx_mmci.o pxa2xx_pcmcia.o pxa2xx_keypad.o
diff --git a/hw/dummy_armv7m.c b/hw/dummy_armv7m.c
new file mode 100644
index 0000000..0a6c922
--- /dev/null
+++ b/hw/dummy_armv7m.c
@@ -0,0 +1,40 @@
+/*
+ * Dummy board with just RAM and CPU for use as an ISS.
+ *
+ * Copyright (c) 2012 Mentor Graphics.
+ * Written by Meador Inge
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "arm-misc.h"
+#include "boards.h"
+#include "exec-memory.h"
+
+static void dummy_armv7m_init(ram_addr_t ram_size,
+                              const char *boot_device,
+                              const char *kernel_filename,
+                              const char *kernel_cmdline,
+                              const char *initrd_filename,
+                              const char *cpu_model)
+{
+
+    MemoryRegion *address_space_mem = get_system_memory();
+
+    (void) armv7m_init(address_space_mem,
+                       64, ram_size / 1024, kernel_filename, cpu_model);
+}
+
+static QEMUMachine dummy_armv7m_machine = {
+    .name = "dummy_armv7m",
+    .desc = "Dummy ARMv7-M",
+    .init = dummy_armv7m_init,
+    .default_for_cpu_model = "cortex-m3",
+};
+
+static void dummy_armv7m_machine_init(void)
+{
+    qemu_register_machine(&dummy_armv7m_machine);
+}
+
+machine_init(dummy_armv7m_machine_init);
-- 
1.7.7.6