hw/arm/armv7m: Remove unused armv7m_init() function

Remove the now-unused armv7m_init() function. This was a legacy from
before we properly QOMified ARMv7M, and it has some flaws:

 * it combines work that needs to be done by an SoC object (creating
   and initializing the TYPE_ARMV7M object) with work that needs to
   be done by the board model (setting the system up to load the ELF
   file specified with -kernel)
 * TYPE_ARMV7M creation failure is fatal, but an SoC object wants to
   arrange to propagate the failure outward
 * it uses allocate-and-create via qdev_create() whereas the current
   preferred style for SoC objects is to do creation in-place

Board and SoC models can instead do the two jobs this function
was doing themselves, in the right places and with whatever their
preferred style/error handling is.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180601144328.23817-3-peter.maydell@linaro.org

hw/arm/armv7m.c

@@ -261,27 +261,6 @@ static void armv7m_reset(void *opaque)
     cpu_reset(CPU(cpu));
 }
 
-/* Init CPU and memory for a v7-M based board.
-   mem_size is in bytes.
-   Returns the ARMv7M device.  */
-
-DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq,
-                         const char *kernel_filename, const char *cpu_type)
-{
-    DeviceState *armv7m;
-
-    armv7m = qdev_create(NULL, TYPE_ARMV7M);
-    qdev_prop_set_uint32(armv7m, "num-irq", num_irq);
-    qdev_prop_set_string(armv7m, "cpu-type", cpu_type);
-    object_property_set_link(OBJECT(armv7m), OBJECT(get_system_memory()),
-                                     "memory", &error_abort);
-    /* This will exit with an error if the user passed us a bad cpu_type */
-    qdev_init_nofail(armv7m);
-
-    armv7m_load_kernel(ARM_CPU(first_cpu), kernel_filename, mem_size);
-    return armv7m;
-}
-
 void armv7m_load_kernel(ARMCPU *cpu, const char *kernel_filename, int mem_size)
 {
     int image_size;

include/hw/arm/arm.h

@@ -23,9 +23,6 @@ typedef enum {
     ARM_ENDIANNESS_BE32,
 } arm_endianness;
 
-/* armv7m.c */
-DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq,
-                         const char *kernel_filename, const char *cpu_type);
 /**
  * armv7m_load_kernel:
  * @cpu: CPU
@@ -33,9 +30,8 @@ DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq,
  * @mem_size: mem_size: maximum image size to load
  *
  * Load the guest image for an ARMv7M system. This must be called by
- * any ARMv7M board, either directly or via armv7m_init(). (This is
- * necessary to ensure that the CPU resets correctly on system reset,
- * as well as for kernel loading.)
+ * any ARMv7M board. (This is necessary to ensure that the CPU resets
+ * correctly on system reset, as well as for kernel loading.)
  */
 void armv7m_load_kernel(ARMCPU *cpu, const char *kernel_filename, int mem_size);