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Commit | Line | Data |
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77d4f95e EI |
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 | ||
23b0d7df | 25 | #include "qemu/osdep.h" |
4771d756 PB |
26 | #include "qemu-common.h" |
27 | #include "cpu.h" | |
83c9f4ca PB |
28 | #include "hw/hw.h" |
29 | #include "hw/loader.h" | |
77d4f95e | 30 | #include "elf.h" |
47b43a1f | 31 | #include "boot.h" |
77d4f95e EI |
32 | |
33 | static void main_cpu_reset(void *opaque) | |
34 | { | |
1584aafd AF |
35 | CRISCPU *cpu = opaque; |
36 | CPUCRISState *env = &cpu->env; | |
77d4f95e EI |
37 | struct cris_load_info *li; |
38 | ||
39 | li = env->load_info; | |
40 | ||
1584aafd | 41 | cpu_reset(CPU(cpu)); |
77d4f95e EI |
42 | |
43 | if (!li) { | |
44 | /* nothing more to do. */ | |
45 | return; | |
46 | } | |
47 | ||
48 | env->pc = li->entry; | |
49 | ||
50 | if (li->image_filename) { | |
51 | env->regs[8] = 0x56902387; /* RAM boot magic. */ | |
52 | env->regs[9] = 0x40004000 + li->image_size; | |
53 | } | |
54 | ||
55 | if (li->cmdline) { | |
56 | /* Let the kernel know we are modifying the cmdline. */ | |
57 | env->regs[10] = 0x87109563; | |
58 | env->regs[11] = 0x40000000; | |
59 | } | |
60 | } | |
61 | ||
62 | static uint64_t translate_kernel_address(void *opaque, uint64_t addr) | |
63 | { | |
64 | return addr - 0x80000000LL; | |
65 | } | |
66 | ||
5935664f | 67 | void cris_load_image(CRISCPU *cpu, struct cris_load_info *li) |
77d4f95e | 68 | { |
5935664f | 69 | CPUCRISState *env = &cpu->env; |
77d4f95e EI |
70 | uint64_t entry, high; |
71 | int kcmdline_len; | |
72 | int image_size; | |
73 | ||
74 | env->load_info = li; | |
75 | /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis | |
76 | devboard SDK. */ | |
77 | image_size = load_elf(li->image_filename, translate_kernel_address, NULL, | |
7ef295ea | 78 | &entry, NULL, &high, 0, EM_CRIS, 0, 0); |
77d4f95e EI |
79 | li->entry = entry; |
80 | if (image_size < 0) { | |
81 | /* Takes a kimage from the axis devboard SDK. */ | |
82 | image_size = load_image_targphys(li->image_filename, 0x40004000, | |
83 | ram_size); | |
84 | li->entry = 0x40004000; | |
85 | } | |
86 | ||
87 | if (image_size < 0) { | |
88 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
89 | li->image_filename); | |
90 | exit(1); | |
91 | } | |
92 | ||
93 | if (li->cmdline && (kcmdline_len = strlen(li->cmdline))) { | |
94 | if (kcmdline_len > 256) { | |
95 | fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n"); | |
96 | exit(1); | |
97 | } | |
98 | pstrcpy_targphys("cmdline", 0x40000000, 256, li->cmdline); | |
99 | } | |
1584aafd | 100 | qemu_register_reset(main_cpu_reset, cpu); |
77d4f95e | 101 | } |