loader: Add new load_ramdisk_as()

Add a function load_ramdisk_as() which behaves like the existing
load_ramdisk() but allows the caller to specify the AddressSpace
to use. This matches the pattern we have already for various
other loader functions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180220180325.29818-2-peter.maydell@linaro.org

include/hw/loader.h

diff --git a/include/hw/loader.h b/include/hw/loader.h
index 5edbe02..2504cc2 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -162,16 +162,26 @@
                 void *translate_opaque);
 
 /**
- * load_ramdisk:
+ * load_ramdisk_as:
  * @filename: Path to the ramdisk image
  * @addr: Memory address to load the ramdisk to
  * @max_sz: Maximum allowed ramdisk size (for non-u-boot ramdisks)
+ * @as: The AddressSpace to load the ELF to. The value of address_space_memory
+ *      is used if nothing is supplied here.
  *
  * Load a ramdisk image with U-Boot header to the specified memory
  * address.
  *
  * Returns the size of the loaded image on success, -1 otherwise.
  */
+int load_ramdisk_as(const char *filename, hwaddr addr, uint64_t max_sz,
+                    AddressSpace *as);
+
+/**
+ * load_ramdisk:
+ * Same as load_ramdisk_as(), but doesn't allow the caller to specify
+ * an AddressSpace.
+ */
 int load_ramdisk(const char *filename, hwaddr addr, uint64_t max_sz);
 
 ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src, size_t srclen);