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0200db65 MF |
1 | /* |
2 | * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions are met: | |
7 | * * Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * * Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * * Neither the name of the Open Source and Linux Lab nor the | |
13 | * names of its contributors may be used to endorse or promote products | |
14 | * derived from this software without specific prior written permission. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY | |
20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 | */ | |
27 | ||
28 | #include "sysemu.h" | |
29 | #include "boards.h" | |
30 | #include "loader.h" | |
31 | #include "elf.h" | |
32 | #include "memory.h" | |
33 | #include "exec-memory.h" | |
34 | #include "pc.h" | |
35 | #include "sysbus.h" | |
36 | ||
37 | typedef struct Lx60FpgaState { | |
38 | MemoryRegion iomem; | |
39 | uint32_t leds; | |
40 | uint32_t switches; | |
41 | } Lx60FpgaState; | |
42 | ||
43 | static void lx60_fpga_reset(void *opaque) | |
44 | { | |
45 | Lx60FpgaState *s = opaque; | |
46 | ||
47 | s->leds = 0; | |
48 | s->switches = 0; | |
49 | } | |
50 | ||
51 | static uint64_t lx60_fpga_read(void *opaque, target_phys_addr_t addr, | |
52 | unsigned size) | |
53 | { | |
54 | Lx60FpgaState *s = opaque; | |
55 | ||
56 | switch (addr) { | |
57 | case 0x0: /*build date code*/ | |
58 | return 0x27092011; | |
59 | ||
60 | case 0x4: /*processor clock frequency, Hz*/ | |
61 | return 10000000; | |
62 | ||
63 | case 0x8: /*LEDs (off = 0, on = 1)*/ | |
64 | return s->leds; | |
65 | ||
66 | case 0xc: /*DIP switches (off = 0, on = 1)*/ | |
67 | return s->switches; | |
68 | } | |
69 | return 0; | |
70 | } | |
71 | ||
72 | static void lx60_fpga_write(void *opaque, target_phys_addr_t addr, | |
73 | uint64_t val, unsigned size) | |
74 | { | |
75 | Lx60FpgaState *s = opaque; | |
76 | ||
77 | switch (addr) { | |
78 | case 0x8: /*LEDs (off = 0, on = 1)*/ | |
79 | s->leds = val; | |
80 | break; | |
81 | ||
82 | case 0x10: /*board reset*/ | |
83 | if (val == 0xdead) { | |
84 | qemu_system_reset_request(); | |
85 | } | |
86 | break; | |
87 | } | |
88 | } | |
89 | ||
90 | static const MemoryRegionOps lx60_fpga_ops = { | |
91 | .read = lx60_fpga_read, | |
92 | .write = lx60_fpga_write, | |
93 | .endianness = DEVICE_NATIVE_ENDIAN, | |
94 | }; | |
95 | ||
96 | static Lx60FpgaState *lx60_fpga_init(MemoryRegion *address_space, | |
97 | target_phys_addr_t base) | |
98 | { | |
99 | Lx60FpgaState *s = g_malloc(sizeof(Lx60FpgaState)); | |
100 | ||
101 | memory_region_init_io(&s->iomem, &lx60_fpga_ops, s, | |
102 | "lx60-fpga", 0x10000); | |
103 | memory_region_add_subregion(address_space, base, &s->iomem); | |
104 | lx60_fpga_reset(s); | |
105 | qemu_register_reset(lx60_fpga_reset, s); | |
106 | return s; | |
107 | } | |
108 | ||
109 | static void lx60_net_init(MemoryRegion *address_space, | |
110 | target_phys_addr_t base, | |
111 | target_phys_addr_t descriptors, | |
112 | target_phys_addr_t buffers, | |
113 | qemu_irq irq, NICInfo *nd) | |
114 | { | |
115 | DeviceState *dev; | |
116 | SysBusDevice *s; | |
117 | MemoryRegion *ram; | |
118 | ||
119 | dev = qdev_create(NULL, "open_eth"); | |
120 | qdev_set_nic_properties(dev, nd); | |
121 | qdev_init_nofail(dev); | |
122 | ||
123 | s = sysbus_from_qdev(dev); | |
124 | sysbus_connect_irq(s, 0, irq); | |
125 | memory_region_add_subregion(address_space, base, | |
126 | sysbus_mmio_get_region(s, 0)); | |
127 | memory_region_add_subregion(address_space, descriptors, | |
128 | sysbus_mmio_get_region(s, 1)); | |
129 | ||
130 | ram = g_malloc(sizeof(*ram)); | |
131 | memory_region_init_ram(ram, NULL, "open_eth.ram", 16384); | |
132 | memory_region_add_subregion(address_space, buffers, ram); | |
133 | } | |
134 | ||
135 | static uint64_t translate_phys_addr(void *env, uint64_t addr) | |
136 | { | |
137 | return cpu_get_phys_page_debug(env, addr); | |
138 | } | |
139 | ||
140 | static void lx60_reset(void *env) | |
141 | { | |
142 | cpu_reset(env); | |
143 | } | |
144 | ||
145 | static void lx60_init(ram_addr_t ram_size, | |
146 | const char *boot_device, | |
147 | const char *kernel_filename, const char *kernel_cmdline, | |
148 | const char *initrd_filename, const char *cpu_model) | |
149 | { | |
150 | #ifdef TARGET_WORDS_BIGENDIAN | |
151 | int be = 1; | |
152 | #else | |
153 | int be = 0; | |
154 | #endif | |
155 | MemoryRegion *system_memory = get_system_memory(); | |
156 | CPUState *env = NULL; | |
157 | MemoryRegion *ram, *rom, *system_io; | |
158 | int n; | |
159 | ||
160 | for (n = 0; n < smp_cpus; n++) { | |
161 | env = cpu_init(cpu_model); | |
162 | if (!env) { | |
163 | fprintf(stderr, "Unable to find CPU definition\n"); | |
164 | exit(1); | |
165 | } | |
166 | env->sregs[PRID] = n; | |
167 | qemu_register_reset(lx60_reset, env); | |
168 | /* Need MMU initialized prior to ELF loading, | |
169 | * so that ELF gets loaded into virtual addresses | |
170 | */ | |
171 | cpu_reset(env); | |
172 | } | |
173 | ||
174 | ram = g_malloc(sizeof(*ram)); | |
175 | memory_region_init_ram(ram, NULL, "xtensa.sram", ram_size); | |
176 | memory_region_add_subregion(system_memory, 0, ram); | |
177 | ||
178 | rom = g_malloc(sizeof(*rom)); | |
179 | memory_region_init_ram(rom, NULL, "xtensa.rom", 0x1000); | |
180 | memory_region_add_subregion(system_memory, 0xfe000000, rom); | |
181 | ||
182 | system_io = g_malloc(sizeof(*system_io)); | |
183 | memory_region_init(system_io, "system.io", 224 * 1024 * 1024); | |
184 | memory_region_add_subregion(system_memory, 0xf0000000, system_io); | |
185 | lx60_fpga_init(system_io, 0x0d020000); | |
186 | if (nd_table[0].vlan) { | |
187 | lx60_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000, | |
188 | xtensa_get_extint(env, 1), nd_table); | |
189 | } | |
190 | ||
191 | if (!serial_hds[0]) { | |
192 | serial_hds[0] = qemu_chr_new("serial0", "null", NULL); | |
193 | } | |
194 | ||
195 | serial_mm_init(system_io, 0x0d050020, 2, xtensa_get_extint(env, 0), | |
196 | 115200, serial_hds[0], DEVICE_NATIVE_ENDIAN); | |
197 | ||
198 | if (kernel_filename) { | |
199 | uint64_t elf_entry; | |
200 | uint64_t elf_lowaddr; | |
201 | int success = load_elf(kernel_filename, translate_phys_addr, env, | |
202 | &elf_entry, &elf_lowaddr, NULL, be, ELF_MACHINE, 0); | |
203 | if (success > 0) { | |
204 | env->pc = elf_entry; | |
205 | } | |
206 | } | |
207 | } | |
208 | ||
209 | static void xtensa_lx60_init(ram_addr_t ram_size, | |
210 | const char *boot_device, | |
211 | const char *kernel_filename, const char *kernel_cmdline, | |
212 | const char *initrd_filename, const char *cpu_model) | |
213 | { | |
214 | if (!cpu_model) { | |
215 | cpu_model = "dc232b"; | |
216 | } | |
217 | lx60_init(ram_size, boot_device, kernel_filename, kernel_cmdline, | |
218 | initrd_filename, cpu_model); | |
219 | } | |
220 | ||
221 | static QEMUMachine xtensa_lx60_machine = { | |
222 | .name = "lx60", | |
223 | .desc = "lx60 EVB (dc232b)", | |
224 | .init = xtensa_lx60_init, | |
225 | .max_cpus = 4, | |
226 | }; | |
227 | ||
228 | static void xtensa_lx60_machine_init(void) | |
229 | { | |
230 | qemu_register_machine(&xtensa_lx60_machine); | |
231 | } | |
232 | ||
233 | machine_init(xtensa_lx60_machine_init); |