hw/arm/digic: prepare DIGIC-based boards support

Also this patch adds initial support for Canon
PowerShot A1100 IS compact camera.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Message-id: 1387188908-754-3-git-send-email-antonynpavlov@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 85 insertions, 0 deletions

diff --git a/hw/arm/Makefile.objs b/hw/arm/Makefile.objs
index 87898075b9..d7d37f241d 100644
--- a/hw/arm/Makefile.objs
+++ b/hw/arm/Makefile.objs
@@ -1,4 +1,5 @@
 obj-y += boot.o collie.o exynos4_boards.o gumstix.o highbank.o
+obj-$(CONFIG_DIGIC) += digic_boards.o
 obj-y += integratorcp.o kzm.o mainstone.o musicpal.o nseries.o
 obj-y += omap_sx1.o palm.o realview.o spitz.o stellaris.o
 obj-y += tosa.o versatilepb.o vexpress.o virt.o xilinx_zynq.o z2.o
diff --git a/hw/arm/digic_boards.c b/hw/arm/digic_boards.c
new file mode 100644
index 0000000000..87a9c4bb13
--- /dev/null
+++ b/hw/arm/digic_boards.c
@@ -0,0 +1,84 @@
+/*
+ * QEMU model of the Canon DIGIC boards (cameras indeed :).
+ *
+ * Copyright (C) 2013 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This model is based on reverse engineering efforts
+ * made by CHDK (http://chdk.wikia.com) and
+ * Magic Lantern (http://www.magiclantern.fm) projects
+ * contributors.
+ *
+ * See docs here:
+ *   http://magiclantern.wikia.com/wiki/Register_Map
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include "hw/boards.h"
+#include "exec/address-spaces.h"
+#include "qemu/error-report.h"
+#include "hw/arm/digic.h"
+
+typedef struct DigicBoardState {
+    DigicState *digic;
+    MemoryRegion ram;
+} DigicBoardState;
+
+typedef struct DigicBoard {
+    hwaddr ram_size;
+} DigicBoard;
+
+static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size)
+{
+    memory_region_init_ram(&s->ram, NULL, "ram", ram_size);
+    memory_region_add_subregion(get_system_memory(), 0, &s->ram);
+    vmstate_register_ram_global(&s->ram);
+}
+
+static void digic4_board_init(DigicBoard *board)
+{
+    Error *err = NULL;
+
+    DigicBoardState *s = g_new(DigicBoardState, 1);
+
+    s->digic = DIGIC(object_new(TYPE_DIGIC));
+    object_property_set_bool(OBJECT(s->digic), true, "realized", &err);
+    if (err != NULL) {
+        error_report("Couldn't realize DIGIC SoC: %s\n",
+                     error_get_pretty(err));
+        exit(1);
+    }
+
+    digic4_board_setup_ram(s, board->ram_size);
+}
+
+static DigicBoard digic4_board_canon_a1100 = {
+    .ram_size = 64 * 1024 * 1024,
+};
+
+static void canon_a1100_init(QEMUMachineInitArgs *args)
+{
+    digic4_board_init(&digic4_board_canon_a1100);
+}
+
+static QEMUMachine canon_a1100 = {
+    .name = "canon-a1100",
+    .desc = "Canon PowerShot A1100 IS",
+    .init = &canon_a1100_init,
+};
+
+static void digic_register_machines(void)
+{
+    qemu_register_machine(&canon_a1100);
+}
+
+machine_init(digic_register_machines)