elf-loader: Allow late loading of elf

The current QEMU ROM infrastructure rejects late loading of ROMs.
And ELFs are currently loaded as ROM, this prevents delayed loading
of ELFs. So when loading ELF, allow the user to specify if ELF should
be loaded as ROM or not.

If an ELF is not loaded as ROM, then they are not restored on a
guest reboot/reset and so its upto the user to handle the reloading.

Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
diff --git a/include/hw/loader.h b/include/hw/loader.h
index 40c4153..490c9ff 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -65,7 +65,7 @@
 #define ELF_LOAD_WRONG_ENDIAN -4
 const char *load_elf_strerror(int error);
 
-/** load_elf_as:
+/** load_elf_ram:
  * @filename: Path of ELF file
  * @translate_fn: optional function to translate load addresses
  * @translate_opaque: opaque data passed to @translate_fn
@@ -81,6 +81,7 @@
  *             words and 3 for within doublewords.
  * @as: The AddressSpace to load the ELF to. The value of address_space_memory
  *      is used if nothing is supplied here.
+ * @load_rom : Load ELF binary as ROM
  *
  * Load an ELF file's contents to the emulated system's address space.
  * Clients may optionally specify a callback to perform address
@@ -93,6 +94,16 @@
  * If @elf_machine is EM_NONE then the machine type will be read from the
  * ELF header and no checks will be carried out against the machine type.
  */
+int load_elf_ram(const char *filename,
+                 uint64_t (*translate_fn)(void *, uint64_t),
+                 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
+                 uint64_t *highaddr, int big_endian, int elf_machine,
+                 int clear_lsb, int data_swab, AddressSpace *as,
+                 bool load_rom);
+
+/** load_elf_as:
+ * Same as load_elf_ram(), but always loads the elf as ROM
+ */
 int load_elf_as(const char *filename,
                 uint64_t (*translate_fn)(void *, uint64_t),
                 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,