hw/avr: Add support for loading ELF/raw binaries

Add avr_load_firmware() function to load firmware in ELF or
raw binary format.

[AM: Corrected the type of the variable containing e_flags]
[AM: Moved definition of e_flags conversion function to boot.c]
Suggested-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
Reviewed-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20200705140315.260514-24-huth@tuxfamily.org>
[PMD: Replace load_image_targphys() by load_image_mr()]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/hw/avr/boot.h b/hw/avr/boot.h
new file mode 100644
index 0000000000..684d553322
--- /dev/null
+++ b/hw/avr/boot.h
@@ -0,0 +1,33 @@
+/*
+ * AVR loader helpers
+ *
+ * Copyright (c) 2019-2020 Philippe Mathieu-Daudé
+ *
+ * This work is licensed under the terms of the GNU GPLv2 or later.
+ * See the COPYING file in the top-level directory.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef HW_AVR_BOOT_H
+#define HW_AVR_BOOT_H
+
+#include "hw/boards.h"
+#include "cpu.h"
+
+/**
+ * avr_load_firmware:   load an image into a memory region
+ *
+ * @cpu:        Handle a AVR CPU object
+ * @ms:         A MachineState
+ * @mr:         Memory Region to load into
+ * @firmware:   Path to the firmware file (raw binary or ELF format)
+ *
+ * Load a firmware supplied by the machine or by the user  with the
+ * '-bios' command line option, and put it in target memory.
+ *
+ * Returns: true on success, false on error.
+ */
+bool avr_load_firmware(AVRCPU *cpu, MachineState *ms,
+                       MemoryRegion *mr, const char *firmware);
+
+#endif