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20#include "qemu/osdep.h"
21#include "qemu/error-report.h"
22#include "qemu-common.h"
23#include "cpu.h"
24#include "hw/sysbus.h"
25#include "hw/hw.h"
26#include "hw/block/flash.h"
27#include "sysemu/sysemu.h"
28#include "sysemu/qtest.h"
29#include "hw/devices.h"
30#include "hw/boards.h"
31#include "hw/loader.h"
32#include "elf.h"
33#include "sysemu/block-backend.h"
34#include "milkymist-hw.h"
35#include "lm32.h"
36#include "exec/address-spaces.h"
37#include "qemu/cutils.h"
38
39#define BIOS_FILENAME "mmone-bios.bin"
40#define BIOS_OFFSET 0x00860000
41#define BIOS_SIZE (512*1024)
42#define KERNEL_LOAD_ADDR 0x40000000
43
44typedef struct {
45 LM32CPU *cpu;
46 hwaddr bootstrap_pc;
47 hwaddr flash_base;
48 hwaddr initrd_base;
49 size_t initrd_size;
50 hwaddr cmdline_base;
51} ResetInfo;
52
53static void cpu_irq_handler(void *opaque, int irq, int level)
54{
55 LM32CPU *cpu = opaque;
56 CPUState *cs = CPU(cpu);
57
58 if (level) {
59 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
60 } else {
61 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
62 }
63}
64
65static void main_cpu_reset(void *opaque)
66{
67 ResetInfo *reset_info = opaque;
68 CPULM32State *env = &reset_info->cpu->env;
69
70 cpu_reset(CPU(reset_info->cpu));
71
72
73 env->pc = reset_info->bootstrap_pc;
74 env->regs[R_R1] = reset_info->cmdline_base;
75 env->regs[R_R2] = reset_info->initrd_base;
76 env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size;
77 env->eba = reset_info->flash_base;
78 env->deba = reset_info->flash_base;
79}
80
81static void
82milkymist_init(MachineState *machine)
83{
84 const char *kernel_filename = machine->kernel_filename;
85 const char *kernel_cmdline = machine->kernel_cmdline;
86 const char *initrd_filename = machine->initrd_filename;
87 LM32CPU *cpu;
88 CPULM32State *env;
89 int kernel_size;
90 DriveInfo *dinfo;
91 MemoryRegion *address_space_mem = get_system_memory();
92 MemoryRegion *phys_sdram = g_new(MemoryRegion, 1);
93 qemu_irq irq[32];
94 int i;
95 char *bios_filename;
96 ResetInfo *reset_info;
97
98
99 hwaddr flash_base = 0x00000000;
100 size_t flash_sector_size = 128 * 1024;
101 size_t flash_size = 32 * 1024 * 1024;
102 hwaddr sdram_base = 0x40000000;
103 size_t sdram_size = 128 * 1024 * 1024;
104
105 hwaddr initrd_base = sdram_base + 0x1002000;
106 hwaddr cmdline_base = sdram_base + 0x1000000;
107 size_t initrd_max = sdram_size - 0x1002000;
108
109 reset_info = g_malloc0(sizeof(ResetInfo));
110
111 cpu = LM32_CPU(cpu_create(machine->cpu_type));
112
113 env = &cpu->env;
114 reset_info->cpu = cpu;
115
116 cpu_lm32_set_phys_msb_ignore(env, 1);
117
118 memory_region_allocate_system_memory(phys_sdram, NULL, "milkymist.sdram",
119 sdram_size);
120 memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram);
121
122 dinfo = drive_get(IF_PFLASH, 0, 0);
123
124 pflash_cfi01_register(flash_base, NULL, "milkymist.flash", flash_size,
125 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
126 flash_sector_size, flash_size / flash_sector_size,
127 2, 0x00, 0x89, 0x00, 0x1d, 1);
128
129
130 env->pic_state = lm32_pic_init(qemu_allocate_irq(cpu_irq_handler, cpu, 0));
131 for (i = 0; i < 32; i++) {
132 irq[i] = qdev_get_gpio_in(env->pic_state, i);
133 }
134
135
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) {
142 load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE);
143 }
144
145 reset_info->bootstrap_pc = BIOS_OFFSET;
146
147
148 if (!kernel_filename && !dinfo && !bios_filename && !qtest_enabled()) {
149 error_report("could not load Milkymist One bios '%s'", bios_name);
150 exit(1);
151 }
152 g_free(bios_filename);
153
154 milkymist_uart_create(0x60000000, irq[0], serial_hds[0]);
155 milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3],
156 80000000, 0x10014d31, 0x0000041f, 0x00000001);
157 milkymist_hpdmc_create(0x60002000);
158 milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff);
159 milkymist_memcard_create(0x60004000);
160 milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]);
161 milkymist_pfpu_create(0x60006000, irq[8]);
162 if (machine->enable_graphics) {
163 milkymist_tmu2_create(0x60007000, irq[9]);
164 }
165 milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]);
166 milkymist_softusb_create(0x6000f000, irq[15],
167 0x20000000, 0x1000, 0x20020000, 0x2000);
168
169
170 env->juart_state = lm32_juart_init(serial_hds[1]);
171
172 if (kernel_filename) {
173 uint64_t entry;
174
175
176 kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
177 1, EM_LATTICEMICO32, 0, 0);
178 reset_info->bootstrap_pc = entry;
179
180 if (kernel_size < 0) {
181 kernel_size = load_image_targphys(kernel_filename, sdram_base,
182 sdram_size);
183 reset_info->bootstrap_pc = sdram_base;
184 }
185
186 if (kernel_size < 0) {
187 error_report("could not load kernel '%s'", kernel_filename);
188 exit(1);
189 }
190 }
191
192 if (kernel_cmdline && strlen(kernel_cmdline)) {
193 pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
194 kernel_cmdline);
195 reset_info->cmdline_base = (uint32_t)cmdline_base;
196 }
197
198 if (initrd_filename) {
199 size_t initrd_size;
200 initrd_size = load_image_targphys(initrd_filename, initrd_base,
201 initrd_max);
202 reset_info->initrd_base = (uint32_t)initrd_base;
203 reset_info->initrd_size = (uint32_t)initrd_size;
204 }
205
206 qemu_register_reset(main_cpu_reset, reset_info);
207}
208
209static void milkymist_machine_init(MachineClass *mc)
210{
211 mc->desc = "Milkymist One";
212 mc->init = milkymist_init;
213 mc->is_default = 0;
214 mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
215}
216
217DEFINE_MACHINE("milkymist", milkymist_machine_init)
218
