cris: Break out image loading to hw/cris-boot.c.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@axis.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/hw/cris-boot.c b/hw/cris-boot.c
new file mode 100644
index 000000000..2ef17f606
--- /dev/null
+++ b/hw/cris-boot.c
@@ -0,0 +1,97 @@
+/*
+ * CRIS image loading.
+ *
+ * Copyright (c) 2010 Edgar E. Iglesias, Axis Communications AB.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw.h"
+#include "sysemu.h"
+#include "loader.h"
+#include "elf.h"
+#include "cris-boot.h"
+
+static void main_cpu_reset(void *opaque)
+{
+    CPUState *env = opaque;
+    struct cris_load_info *li;
+
+    li = env->load_info;
+
+    cpu_reset(env);
+
+    if (!li) {
+        /* nothing more to do.  */
+        return;
+    }
+
+    env->pc = li->entry;
+
+    if (li->image_filename) {
+        env->regs[8] = 0x56902387; /* RAM boot magic.  */
+        env->regs[9] = 0x40004000 + li->image_size;
+    }
+
+    if (li->cmdline) {
+        /* Let the kernel know we are modifying the cmdline.  */
+        env->regs[10] = 0x87109563;
+        env->regs[11] = 0x40000000;
+    }
+}
+
+static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
+{
+    return addr - 0x80000000LL;
+}
+
+void cris_load_image(CPUState *env, struct cris_load_info *li)
+{
+    uint64_t entry, high;
+    int kcmdline_len;
+    int image_size;
+
+    env->load_info = li;
+    /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis 
+       devboard SDK.  */
+    image_size = load_elf(li->image_filename, translate_kernel_address, NULL,
+                          &entry, NULL, &high, 0, ELF_MACHINE, 0);
+    li->entry = entry;
+    if (image_size < 0) {
+        /* Takes a kimage from the axis devboard SDK.  */
+        image_size = load_image_targphys(li->image_filename, 0x40004000,
+                                         ram_size);
+        li->entry = 0x40004000;
+    }
+
+    if (image_size < 0) {
+        fprintf(stderr, "qemu: could not load kernel '%s'\n",
+                li->image_filename);
+        exit(1);
+    }
+
+    if (li->cmdline && (kcmdline_len = strlen(li->cmdline))) {
+        if (kcmdline_len > 256) {
+            fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
+            exit(1);
+        }
+        pstrcpy_targphys("cmdline", 0x40000000, 256, li->cmdline);
+    }
+    qemu_register_reset(main_cpu_reset, env);
+}