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5052d227 MW |
1 | /* |
2 | * QEMU model for the Milkymist board. | |
3 | * | |
4 | * Copyright (c) 2010 Michael Walle <michael@walle.cc> | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
83c9f4ca PB |
20 | #include "hw/sysbus.h" |
21 | #include "hw/hw.h" | |
0d09e41a | 22 | #include "hw/block/flash.h" |
9c17d615 | 23 | #include "sysemu/sysemu.h" |
c00eb5ce | 24 | #include "sysemu/qtest.h" |
bd2be150 | 25 | #include "hw/devices.h" |
83c9f4ca PB |
26 | #include "hw/boards.h" |
27 | #include "hw/loader.h" | |
5052d227 | 28 | #include "elf.h" |
fa1d36df | 29 | #include "sysemu/block-backend.h" |
9c17d615 | 30 | #include "sysemu/blockdev.h" |
47b43a1f PB |
31 | #include "milkymist-hw.h" |
32 | #include "lm32.h" | |
022c62cb | 33 | #include "exec/address-spaces.h" |
5052d227 MW |
34 | |
35 | #define BIOS_FILENAME "mmone-bios.bin" | |
36 | #define BIOS_OFFSET 0x00860000 | |
37 | #define BIOS_SIZE (512*1024) | |
38 | #define KERNEL_LOAD_ADDR 0x40000000 | |
39 | ||
40 | typedef struct { | |
f6932a86 | 41 | LM32CPU *cpu; |
a8170e5e AK |
42 | hwaddr bootstrap_pc; |
43 | hwaddr flash_base; | |
44 | hwaddr initrd_base; | |
5052d227 | 45 | size_t initrd_size; |
a8170e5e | 46 | hwaddr cmdline_base; |
5052d227 MW |
47 | } ResetInfo; |
48 | ||
49 | static void cpu_irq_handler(void *opaque, int irq, int level) | |
50 | { | |
d8ed887b | 51 | LM32CPU *cpu = opaque; |
d8ed887b | 52 | CPUState *cs = CPU(cpu); |
5052d227 MW |
53 | |
54 | if (level) { | |
c3affe56 | 55 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
5052d227 | 56 | } else { |
d8ed887b | 57 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
5052d227 MW |
58 | } |
59 | } | |
60 | ||
61 | static void main_cpu_reset(void *opaque) | |
62 | { | |
63 | ResetInfo *reset_info = opaque; | |
f6932a86 | 64 | CPULM32State *env = &reset_info->cpu->env; |
5052d227 | 65 | |
f6932a86 | 66 | cpu_reset(CPU(reset_info->cpu)); |
5052d227 MW |
67 | |
68 | /* init defaults */ | |
69 | env->pc = reset_info->bootstrap_pc; | |
70 | env->regs[R_R1] = reset_info->cmdline_base; | |
71 | env->regs[R_R2] = reset_info->initrd_base; | |
72 | env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size; | |
73 | env->eba = reset_info->flash_base; | |
74 | env->deba = reset_info->flash_base; | |
75 | } | |
76 | ||
77 | static void | |
3ef96221 | 78 | milkymist_init(MachineState *machine) |
5052d227 | 79 | { |
3ef96221 MA |
80 | const char *cpu_model = machine->cpu_model; |
81 | const char *kernel_filename = machine->kernel_filename; | |
82 | const char *kernel_cmdline = machine->kernel_cmdline; | |
83 | const char *initrd_filename = machine->initrd_filename; | |
1328cc01 | 84 | LM32CPU *cpu; |
93a67402 | 85 | CPULM32State *env; |
5052d227 MW |
86 | int kernel_size; |
87 | DriveInfo *dinfo; | |
c50a6def AK |
88 | MemoryRegion *address_space_mem = get_system_memory(); |
89 | MemoryRegion *phys_sdram = g_new(MemoryRegion, 1); | |
5052d227 MW |
90 | qemu_irq irq[32], *cpu_irq; |
91 | int i; | |
92 | char *bios_filename; | |
93 | ResetInfo *reset_info; | |
94 | ||
95 | /* memory map */ | |
a8170e5e | 96 | hwaddr flash_base = 0x00000000; |
5052d227 MW |
97 | size_t flash_sector_size = 128 * 1024; |
98 | size_t flash_size = 32 * 1024 * 1024; | |
a8170e5e | 99 | hwaddr sdram_base = 0x40000000; |
5052d227 MW |
100 | size_t sdram_size = 128 * 1024 * 1024; |
101 | ||
a8170e5e AK |
102 | hwaddr initrd_base = sdram_base + 0x1002000; |
103 | hwaddr cmdline_base = sdram_base + 0x1000000; | |
5052d227 MW |
104 | size_t initrd_max = sdram_size - 0x1002000; |
105 | ||
7267c094 | 106 | reset_info = g_malloc0(sizeof(ResetInfo)); |
5052d227 MW |
107 | |
108 | if (cpu_model == NULL) { | |
109 | cpu_model = "lm32-full"; | |
110 | } | |
1328cc01 | 111 | cpu = cpu_lm32_init(cpu_model); |
f41152bd MW |
112 | if (cpu == NULL) { |
113 | fprintf(stderr, "qemu: unable to find CPU '%s'\n", cpu_model); | |
114 | exit(1); | |
115 | } | |
116 | ||
1328cc01 | 117 | env = &cpu->env; |
f6932a86 | 118 | reset_info->cpu = cpu; |
5052d227 MW |
119 | |
120 | cpu_lm32_set_phys_msb_ignore(env, 1); | |
121 | ||
49946538 HT |
122 | memory_region_init_ram(phys_sdram, NULL, "milkymist.sdram", sdram_size, |
123 | &error_abort); | |
c5705a77 | 124 | vmstate_register_ram_global(phys_sdram); |
c50a6def | 125 | memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram); |
5052d227 | 126 | |
5052d227 MW |
127 | dinfo = drive_get(IF_PFLASH, 0, 0); |
128 | /* Numonyx JS28F256J3F105 */ | |
cfe5f011 | 129 | pflash_cfi01_register(flash_base, NULL, "milkymist.flash", flash_size, |
fa1d36df MA |
130 | dinfo ? blk_bs(blk_by_legacy_dinfo(dinfo)) : NULL, |
131 | flash_sector_size, flash_size / flash_sector_size, | |
132 | 2, 0x00, 0x89, 0x00, 0x1d, 1); | |
5052d227 MW |
133 | |
134 | /* create irq lines */ | |
d8ed887b | 135 | cpu_irq = qemu_allocate_irqs(cpu_irq_handler, cpu, 1); |
5052d227 MW |
136 | env->pic_state = lm32_pic_init(*cpu_irq); |
137 | for (i = 0; i < 32; i++) { | |
138 | irq[i] = qdev_get_gpio_in(env->pic_state, i); | |
139 | } | |
140 | ||
141 | /* load bios rom */ | |
142 | if (bios_name == NULL) { | |
143 | bios_name = BIOS_FILENAME; | |
144 | } | |
145 | bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
146 | ||
147 | if (bios_filename) { | |
148 | load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE); | |
149 | } | |
150 | ||
151 | reset_info->bootstrap_pc = BIOS_OFFSET; | |
152 | ||
153 | /* if no kernel is given no valid bios rom is a fatal error */ | |
c00eb5ce | 154 | if (!kernel_filename && !dinfo && !bios_filename && !qtest_enabled()) { |
5052d227 MW |
155 | fprintf(stderr, "qemu: could not load Milkymist One bios '%s'\n", |
156 | bios_name); | |
157 | exit(1); | |
158 | } | |
159 | ||
fcfa3397 | 160 | milkymist_uart_create(0x60000000, irq[0]); |
779277ca | 161 | milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3], |
5052d227 MW |
162 | 80000000, 0x10014d31, 0x0000041f, 0x00000001); |
163 | milkymist_hpdmc_create(0x60002000); | |
164 | milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff); | |
165 | milkymist_memcard_create(0x60004000); | |
779277ca MW |
166 | milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]); |
167 | milkymist_pfpu_create(0x60006000, irq[8]); | |
168 | milkymist_tmu2_create(0x60007000, irq[9]); | |
169 | milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]); | |
170 | milkymist_softusb_create(0x6000f000, irq[15], | |
5052d227 MW |
171 | 0x20000000, 0x1000, 0x20020000, 0x2000); |
172 | ||
173 | /* make sure juart isn't the first chardev */ | |
174 | env->juart_state = lm32_juart_init(); | |
175 | ||
176 | if (kernel_filename) { | |
177 | uint64_t entry; | |
178 | ||
179 | /* Boots a kernel elf binary. */ | |
180 | kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL, | |
181 | 1, ELF_MACHINE, 0); | |
182 | reset_info->bootstrap_pc = entry; | |
183 | ||
184 | if (kernel_size < 0) { | |
185 | kernel_size = load_image_targphys(kernel_filename, sdram_base, | |
186 | sdram_size); | |
187 | reset_info->bootstrap_pc = sdram_base; | |
188 | } | |
189 | ||
190 | if (kernel_size < 0) { | |
191 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
192 | kernel_filename); | |
193 | exit(1); | |
194 | } | |
195 | } | |
196 | ||
197 | if (kernel_cmdline && strlen(kernel_cmdline)) { | |
198 | pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE, | |
199 | kernel_cmdline); | |
200 | reset_info->cmdline_base = (uint32_t)cmdline_base; | |
201 | } | |
202 | ||
203 | if (initrd_filename) { | |
204 | size_t initrd_size; | |
205 | initrd_size = load_image_targphys(initrd_filename, initrd_base, | |
206 | initrd_max); | |
207 | reset_info->initrd_base = (uint32_t)initrd_base; | |
208 | reset_info->initrd_size = (uint32_t)initrd_size; | |
209 | } | |
210 | ||
211 | qemu_register_reset(main_cpu_reset, reset_info); | |
212 | } | |
213 | ||
214 | static QEMUMachine milkymist_machine = { | |
215 | .name = "milkymist", | |
216 | .desc = "Milkymist One", | |
217 | .init = milkymist_init, | |
e4ada29e | 218 | .is_default = 0, |
5052d227 MW |
219 | }; |
220 | ||
221 | static void milkymist_machine_init(void) | |
222 | { | |
223 | qemu_register_machine(&milkymist_machine); | |
224 | } | |
225 | ||
226 | machine_init(milkymist_machine_init); |