Add access control support to qemu bridge helper
[qemu.git] / hw / cris-boot.c
1 /*
2 * CRIS image loading.
3 *
4 * Copyright (c) 2010 Edgar E. Iglesias, Axis Communications AB.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "hw.h"
26 #include "loader.h"
27 #include "elf.h"
28 #include "cris-boot.h"
29
30 static void main_cpu_reset(void *opaque)
31 {
32 CPUState *env = opaque;
33 struct cris_load_info *li;
34
35 li = env->load_info;
36
37 cpu_reset(env);
38
39 if (!li) {
40 /* nothing more to do. */
41 return;
42 }
43
44 env->pc = li->entry;
45
46 if (li->image_filename) {
47 env->regs[8] = 0x56902387; /* RAM boot magic. */
48 env->regs[9] = 0x40004000 + li->image_size;
49 }
50
51 if (li->cmdline) {
52 /* Let the kernel know we are modifying the cmdline. */
53 env->regs[10] = 0x87109563;
54 env->regs[11] = 0x40000000;
55 }
56 }
57
58 static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
59 {
60 return addr - 0x80000000LL;
61 }
62
63 void cris_load_image(CPUState *env, struct cris_load_info *li)
64 {
65 uint64_t entry, high;
66 int kcmdline_len;
67 int image_size;
68
69 env->load_info = li;
70 /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
71 devboard SDK. */
72 image_size = load_elf(li->image_filename, translate_kernel_address, NULL,
73 &entry, NULL, &high, 0, ELF_MACHINE, 0);
74 li->entry = entry;
75 if (image_size < 0) {
76 /* Takes a kimage from the axis devboard SDK. */
77 image_size = load_image_targphys(li->image_filename, 0x40004000,
78 ram_size);
79 li->entry = 0x40004000;
80 }
81
82 if (image_size < 0) {
83 fprintf(stderr, "qemu: could not load kernel '%s'\n",
84 li->image_filename);
85 exit(1);
86 }
87
88 if (li->cmdline && (kcmdline_len = strlen(li->cmdline))) {
89 if (kcmdline_len > 256) {
90 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
91 exit(1);
92 }
93 pstrcpy_targphys("cmdline", 0x40000000, 256, li->cmdline);
94 }
95 qemu_register_reset(main_cpu_reset, env);
96 }