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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 | ||
ea99dde1 | 20 | #include "qemu/osdep.h" |
fc0187cb | 21 | #include "qemu/units.h" |
0a094a54 | 22 | #include "qemu/error-report.h" |
4771d756 PB |
23 | #include "qemu-common.h" |
24 | #include "cpu.h" | |
83c9f4ca | 25 | #include "hw/sysbus.h" |
64552b6b | 26 | #include "hw/irq.h" |
0d09e41a | 27 | #include "hw/block/flash.h" |
9c17d615 | 28 | #include "sysemu/sysemu.h" |
c00eb5ce | 29 | #include "sysemu/qtest.h" |
71e8a915 | 30 | #include "sysemu/reset.h" |
83c9f4ca PB |
31 | #include "hw/boards.h" |
32 | #include "hw/loader.h" | |
a27bd6c7 | 33 | #include "hw/qdev-properties.h" |
5052d227 | 34 | #include "elf.h" |
47b43a1f | 35 | #include "milkymist-hw.h" |
70cc0c1f | 36 | #include "hw/display/milkymist_tmu2.h" |
47b43a1f | 37 | #include "lm32.h" |
022c62cb | 38 | #include "exec/address-spaces.h" |
5052d227 MW |
39 | |
40 | #define BIOS_FILENAME "mmone-bios.bin" | |
41 | #define BIOS_OFFSET 0x00860000 | |
fc0187cb | 42 | #define BIOS_SIZE (512 * KiB) |
5052d227 MW |
43 | #define KERNEL_LOAD_ADDR 0x40000000 |
44 | ||
45 | typedef struct { | |
f6932a86 | 46 | LM32CPU *cpu; |
a8170e5e AK |
47 | hwaddr bootstrap_pc; |
48 | hwaddr flash_base; | |
49 | hwaddr initrd_base; | |
5052d227 | 50 | size_t initrd_size; |
a8170e5e | 51 | hwaddr cmdline_base; |
5052d227 MW |
52 | } ResetInfo; |
53 | ||
54 | static void cpu_irq_handler(void *opaque, int irq, int level) | |
55 | { | |
d8ed887b | 56 | LM32CPU *cpu = opaque; |
d8ed887b | 57 | CPUState *cs = CPU(cpu); |
5052d227 MW |
58 | |
59 | if (level) { | |
c3affe56 | 60 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
5052d227 | 61 | } else { |
d8ed887b | 62 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
5052d227 MW |
63 | } |
64 | } | |
65 | ||
66 | static void main_cpu_reset(void *opaque) | |
67 | { | |
68 | ResetInfo *reset_info = opaque; | |
f6932a86 | 69 | CPULM32State *env = &reset_info->cpu->env; |
5052d227 | 70 | |
f6932a86 | 71 | cpu_reset(CPU(reset_info->cpu)); |
5052d227 MW |
72 | |
73 | /* init defaults */ | |
74 | env->pc = reset_info->bootstrap_pc; | |
75 | env->regs[R_R1] = reset_info->cmdline_base; | |
76 | env->regs[R_R2] = reset_info->initrd_base; | |
77 | env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size; | |
78 | env->eba = reset_info->flash_base; | |
79 | env->deba = reset_info->flash_base; | |
80 | } | |
81 | ||
82 | static void | |
3ef96221 | 83 | milkymist_init(MachineState *machine) |
5052d227 | 84 | { |
3ef96221 MA |
85 | const char *kernel_filename = machine->kernel_filename; |
86 | const char *kernel_cmdline = machine->kernel_cmdline; | |
87 | const char *initrd_filename = machine->initrd_filename; | |
1328cc01 | 88 | LM32CPU *cpu; |
93a67402 | 89 | CPULM32State *env; |
5052d227 MW |
90 | int kernel_size; |
91 | DriveInfo *dinfo; | |
c50a6def AK |
92 | MemoryRegion *address_space_mem = get_system_memory(); |
93 | MemoryRegion *phys_sdram = g_new(MemoryRegion, 1); | |
a9c8a0d8 | 94 | qemu_irq irq[32]; |
5052d227 MW |
95 | int i; |
96 | char *bios_filename; | |
97 | ResetInfo *reset_info; | |
98 | ||
99 | /* memory map */ | |
a8170e5e | 100 | hwaddr flash_base = 0x00000000; |
fc0187cb PMD |
101 | size_t flash_sector_size = 128 * KiB; |
102 | size_t flash_size = 32 * MiB; | |
a8170e5e | 103 | hwaddr sdram_base = 0x40000000; |
fc0187cb | 104 | size_t sdram_size = 128 * MiB; |
5052d227 | 105 | |
a8170e5e AK |
106 | hwaddr initrd_base = sdram_base + 0x1002000; |
107 | hwaddr cmdline_base = sdram_base + 0x1000000; | |
5052d227 MW |
108 | size_t initrd_max = sdram_size - 0x1002000; |
109 | ||
7267c094 | 110 | reset_info = g_malloc0(sizeof(ResetInfo)); |
5052d227 | 111 | |
201c160e | 112 | cpu = LM32_CPU(cpu_create(machine->cpu_type)); |
f41152bd | 113 | |
1328cc01 | 114 | env = &cpu->env; |
f6932a86 | 115 | reset_info->cpu = cpu; |
5052d227 MW |
116 | |
117 | cpu_lm32_set_phys_msb_ignore(env, 1); | |
118 | ||
b7ccb83f DM |
119 | memory_region_allocate_system_memory(phys_sdram, NULL, "milkymist.sdram", |
120 | sdram_size); | |
c50a6def | 121 | memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram); |
5052d227 | 122 | |
5052d227 MW |
123 | dinfo = drive_get(IF_PFLASH, 0, 0); |
124 | /* Numonyx JS28F256J3F105 */ | |
940d5b13 | 125 | pflash_cfi01_register(flash_base, "milkymist.flash", flash_size, |
4be74634 | 126 | dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, |
ce14710f | 127 | flash_sector_size, 2, 0x00, 0x89, 0x00, 0x1d, 1); |
5052d227 MW |
128 | |
129 | /* create irq lines */ | |
a9c8a0d8 | 130 | env->pic_state = lm32_pic_init(qemu_allocate_irq(cpu_irq_handler, cpu, 0)); |
5052d227 MW |
131 | for (i = 0; i < 32; i++) { |
132 | irq[i] = qdev_get_gpio_in(env->pic_state, i); | |
133 | } | |
134 | ||
135 | /* load bios rom */ | |
136 | if (bios_name == NULL) { | |
137 | bios_name = BIOS_FILENAME; | |
138 | } | |
139 | bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
140 | ||
141 | if (bios_filename) { | |
40af11eb PM |
142 | if (load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE) < 0) { |
143 | error_report("could not load bios '%s'", bios_filename); | |
144 | exit(1); | |
145 | } | |
5052d227 MW |
146 | } |
147 | ||
148 | reset_info->bootstrap_pc = BIOS_OFFSET; | |
149 | ||
150 | /* if no kernel is given no valid bios rom is a fatal error */ | |
c00eb5ce | 151 | if (!kernel_filename && !dinfo && !bios_filename && !qtest_enabled()) { |
0a094a54 | 152 | error_report("could not load Milkymist One bios '%s'", bios_name); |
5052d227 MW |
153 | exit(1); |
154 | } | |
c2c17a24 | 155 | g_free(bios_filename); |
5052d227 | 156 | |
9bca0edb | 157 | milkymist_uart_create(0x60000000, irq[0], serial_hd(0)); |
779277ca | 158 | milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3], |
5052d227 MW |
159 | 80000000, 0x10014d31, 0x0000041f, 0x00000001); |
160 | milkymist_hpdmc_create(0x60002000); | |
161 | milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff); | |
162 | milkymist_memcard_create(0x60004000); | |
779277ca MW |
163 | milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]); |
164 | milkymist_pfpu_create(0x60006000, irq[8]); | |
cfc58cf3 | 165 | if (machine->enable_graphics) { |
cf3dc71e EH |
166 | milkymist_tmu2_create(0x60007000, irq[9]); |
167 | } | |
779277ca MW |
168 | milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]); |
169 | milkymist_softusb_create(0x6000f000, irq[15], | |
5052d227 MW |
170 | 0x20000000, 0x1000, 0x20020000, 0x2000); |
171 | ||
172 | /* make sure juart isn't the first chardev */ | |
9bca0edb | 173 | env->juart_state = lm32_juart_init(serial_hd(1)); |
5052d227 MW |
174 | |
175 | if (kernel_filename) { | |
176 | uint64_t entry; | |
177 | ||
178 | /* Boots a kernel elf binary. */ | |
4366e1db LM |
179 | kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, |
180 | &entry, NULL, NULL, | |
7ef295ea | 181 | 1, EM_LATTICEMICO32, 0, 0); |
5052d227 MW |
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) { | |
0a094a54 | 191 | error_report("could not load kernel '%s'", kernel_filename); |
5052d227 MW |
192 | exit(1); |
193 | } | |
194 | } | |
195 | ||
196 | if (kernel_cmdline && strlen(kernel_cmdline)) { | |
197 | pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE, | |
198 | kernel_cmdline); | |
199 | reset_info->cmdline_base = (uint32_t)cmdline_base; | |
200 | } | |
201 | ||
202 | if (initrd_filename) { | |
203 | size_t initrd_size; | |
204 | initrd_size = load_image_targphys(initrd_filename, initrd_base, | |
205 | initrd_max); | |
206 | reset_info->initrd_base = (uint32_t)initrd_base; | |
207 | reset_info->initrd_size = (uint32_t)initrd_size; | |
208 | } | |
209 | ||
210 | qemu_register_reset(main_cpu_reset, reset_info); | |
211 | } | |
212 | ||
e264d29d | 213 | static void milkymist_machine_init(MachineClass *mc) |
5052d227 | 214 | { |
e264d29d EH |
215 | mc->desc = "Milkymist One"; |
216 | mc->init = milkymist_init; | |
217 | mc->is_default = 0; | |
201c160e | 218 | mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full"); |
5052d227 MW |
219 | } |
220 | ||
e264d29d | 221 | DEFINE_MACHINE("milkymist", milkymist_machine_init) |