meson: convert hw/vfio
[qemu.git] / hw / avr / boot.c
1 /*
2 * AVR loader helpers
3 *
4 * Copyright (c) 2019-2020 Philippe Mathieu-Daudé
5 *
6 * This work is licensed under the terms of the GNU GPLv2 or later.
7 * See the COPYING file in the top-level directory.
8 * SPDX-License-Identifier: GPL-2.0-or-later
9 */
10
11 #include "qemu/osdep.h"
12 #include "qemu-common.h"
13 #include "hw/loader.h"
14 #include "elf.h"
15 #include "boot.h"
16 #include "qemu/error-report.h"
17
18 static const char *avr_elf_e_flags_to_cpu_type(uint32_t flags)
19 {
20 switch (flags & EF_AVR_MACH) {
21 case bfd_mach_avr1:
22 return AVR_CPU_TYPE_NAME("avr1");
23 case bfd_mach_avr2:
24 return AVR_CPU_TYPE_NAME("avr2");
25 case bfd_mach_avr25:
26 return AVR_CPU_TYPE_NAME("avr25");
27 case bfd_mach_avr3:
28 return AVR_CPU_TYPE_NAME("avr3");
29 case bfd_mach_avr31:
30 return AVR_CPU_TYPE_NAME("avr31");
31 case bfd_mach_avr35:
32 return AVR_CPU_TYPE_NAME("avr35");
33 case bfd_mach_avr4:
34 return AVR_CPU_TYPE_NAME("avr4");
35 case bfd_mach_avr5:
36 return AVR_CPU_TYPE_NAME("avr5");
37 case bfd_mach_avr51:
38 return AVR_CPU_TYPE_NAME("avr51");
39 case bfd_mach_avr6:
40 return AVR_CPU_TYPE_NAME("avr6");
41 case bfd_mach_avrtiny:
42 return AVR_CPU_TYPE_NAME("avrtiny");
43 case bfd_mach_avrxmega2:
44 return AVR_CPU_TYPE_NAME("xmega2");
45 case bfd_mach_avrxmega3:
46 return AVR_CPU_TYPE_NAME("xmega3");
47 case bfd_mach_avrxmega4:
48 return AVR_CPU_TYPE_NAME("xmega4");
49 case bfd_mach_avrxmega5:
50 return AVR_CPU_TYPE_NAME("xmega5");
51 case bfd_mach_avrxmega6:
52 return AVR_CPU_TYPE_NAME("xmega6");
53 case bfd_mach_avrxmega7:
54 return AVR_CPU_TYPE_NAME("xmega7");
55 default:
56 return NULL;
57 }
58 }
59
60 bool avr_load_firmware(AVRCPU *cpu, MachineState *ms,
61 MemoryRegion *program_mr, const char *firmware)
62 {
63 g_autofree char *filename = NULL;
64 int bytes_loaded;
65 uint64_t entry;
66 uint32_t e_flags;
67
68 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, firmware);
69 if (filename == NULL) {
70 error_report("Unable to find %s", firmware);
71 return false;
72 }
73
74 bytes_loaded = load_elf_ram_sym(filename,
75 NULL, NULL, NULL,
76 &entry, NULL, NULL,
77 &e_flags, 0, EM_AVR, 0, 0,
78 NULL, true, NULL);
79 if (bytes_loaded >= 0) {
80 /* If ELF file is provided, determine CPU type reading ELF e_flags. */
81 const char *elf_cpu = avr_elf_e_flags_to_cpu_type(e_flags);
82 const char *mcu_cpu_type = object_get_typename(OBJECT(cpu));
83 int cpu_len = strlen(mcu_cpu_type) - strlen(AVR_CPU_TYPE_SUFFIX);
84
85 if (entry) {
86 error_report("BIOS entry_point must be 0x0000 "
87 "(ELF image '%s' has entry_point 0x%04" PRIx64 ")",
88 firmware, entry);
89 return false;
90 }
91 if (!elf_cpu) {
92 warn_report("Could not determine CPU type for ELF image '%s', "
93 "assuming '%.*s' CPU",
94 firmware, cpu_len, mcu_cpu_type);
95 return true;
96 }
97 if (strcmp(elf_cpu, mcu_cpu_type)) {
98 error_report("Current machine: %s with '%.*s' CPU",
99 MACHINE_GET_CLASS(ms)->desc, cpu_len, mcu_cpu_type);
100 error_report("ELF image '%s' is for '%.*s' CPU",
101 firmware,
102 (int)(strlen(elf_cpu) - strlen(AVR_CPU_TYPE_SUFFIX)),
103 elf_cpu);
104 return false;
105 }
106 } else {
107 bytes_loaded = load_image_mr(filename, program_mr);
108 }
109 if (bytes_loaded < 0) {
110 error_report("Unable to load firmware image %s as ELF or raw binary",
111 firmware);
112 return false;
113 }
114 return true;
115 }