1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26#include "qemu/osdep.h"
27#include "qapi/error.h"
28#include "qemu-common.h"
29#include "cpu.h"
30#include "hw/sysbus.h"
31#include "hw/hw.h"
32#include "hw/sh4/sh.h"
33#include "hw/devices.h"
34#include "sysemu/sysemu.h"
35#include "hw/boards.h"
36#include "hw/pci/pci.h"
37#include "net/net.h"
38#include "sh7750_regs.h"
39#include "hw/ide.h"
40#include "hw/loader.h"
41#include "hw/usb.h"
42#include "hw/block/flash.h"
43#include "sysemu/block-backend.h"
44#include "exec/address-spaces.h"
45
46#define FLASH_BASE 0x00000000
47#define FLASH_SIZE 0x02000000
48
49#define SDRAM_BASE 0x0c000000
50#define SDRAM_SIZE 0x04000000
51
52#define SM501_VRAM_SIZE 0x800000
53
54#define BOOT_PARAMS_OFFSET 0x0010000
55
56#define LINUX_LOAD_OFFSET 0x0800000
57#define INITRD_LOAD_OFFSET 0x1800000
58
59#define PA_IRLMSK 0x00
60#define PA_POWOFF 0x30
61#define PA_VERREG 0x32
62#define PA_OUTPORT 0x36
63
64typedef struct {
65 uint16_t bcr;
66 uint16_t irlmsk;
67 uint16_t irlmon;
68 uint16_t cfctl;
69 uint16_t cfpow;
70 uint16_t dispctl;
71 uint16_t sdmpow;
72 uint16_t rtcce;
73 uint16_t pcicd;
74 uint16_t voyagerrts;
75 uint16_t cfrst;
76 uint16_t admrts;
77 uint16_t extrst;
78 uint16_t cfcdintclr;
79 uint16_t keyctlclr;
80 uint16_t pad0;
81 uint16_t pad1;
82 uint16_t verreg;
83 uint16_t inport;
84 uint16_t outport;
85 uint16_t bverreg;
86
87
88 qemu_irq irl;
89 MemoryRegion iomem;
90} r2d_fpga_t;
91
92enum r2d_fpga_irq {
93 PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T,
94 SDCARD, PCI_INTA, PCI_INTB, EXT, TP,
95 NR_IRQS
96};
97
98static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = {
99 [CF_IDE] = { 1, 1<<9 },
100 [CF_CD] = { 2, 1<<8 },
101 [PCI_INTA] = { 9, 1<<14 },
102 [PCI_INTB] = { 10, 1<<13 },
103 [PCI_INTC] = { 3, 1<<12 },
104 [PCI_INTD] = { 0, 1<<11 },
105 [SM501] = { 4, 1<<10 },
106 [KEY] = { 5, 1<<6 },
107 [RTC_A] = { 6, 1<<5 },
108 [RTC_T] = { 7, 1<<4 },
109 [SDCARD] = { 8, 1<<7 },
110 [EXT] = { 11, 1<<0 },
111 [TP] = { 12, 1<<15 },
112};
113
114static void update_irl(r2d_fpga_t *fpga)
115{
116 int i, irl = 15;
117 for (i = 0; i < NR_IRQS; i++)
118 if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk)
119 if (irqtab[i].irl < irl)
120 irl = irqtab[i].irl;
121 qemu_set_irq(fpga->irl, irl ^ 15);
122}
123
124static void r2d_fpga_irq_set(void *opaque, int n, int level)
125{
126 r2d_fpga_t *fpga = opaque;
127 if (level)
128 fpga->irlmon |= irqtab[n].msk;
129 else
130 fpga->irlmon &= ~irqtab[n].msk;
131 update_irl(fpga);
132}
133
134static uint64_t r2d_fpga_read(void *opaque, hwaddr addr, unsigned int size)
135{
136 r2d_fpga_t *s = opaque;
137
138 switch (addr) {
139 case PA_IRLMSK:
140 return s->irlmsk;
141 case PA_OUTPORT:
142 return s->outport;
143 case PA_POWOFF:
144 return 0x00;
145 case PA_VERREG:
146 return 0x10;
147 }
148
149 return 0;
150}
151
152static void
153r2d_fpga_write(void *opaque, hwaddr addr, uint64_t value, unsigned int size)
154{
155 r2d_fpga_t *s = opaque;
156
157 switch (addr) {
158 case PA_IRLMSK:
159 s->irlmsk = value;
160 update_irl(s);
161 break;
162 case PA_OUTPORT:
163 s->outport = value;
164 break;
165 case PA_POWOFF:
166 if (value & 1) {
167 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
168 }
169 break;
170 case PA_VERREG:
171
172 break;
173 }
174}
175
176static const MemoryRegionOps r2d_fpga_ops = {
177 .read = r2d_fpga_read,
178 .write = r2d_fpga_write,
179 .impl.min_access_size = 2,
180 .impl.max_access_size = 2,
181 .endianness = DEVICE_NATIVE_ENDIAN,
182};
183
184static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem,
185 hwaddr base, qemu_irq irl)
186{
187 r2d_fpga_t *s;
188
189 s = g_malloc0(sizeof(r2d_fpga_t));
190
191 s->irl = irl;
192
193 memory_region_init_io(&s->iomem, NULL, &r2d_fpga_ops, s, "r2d-fpga", 0x40);
194 memory_region_add_subregion(sysmem, base, &s->iomem);
195 return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS);
196}
197
198typedef struct ResetData {
199 SuperHCPU *cpu;
200 uint32_t vector;
201} ResetData;
202
203static void main_cpu_reset(void *opaque)
204{
205 ResetData *s = (ResetData *)opaque;
206 CPUSH4State *env = &s->cpu->env;
207
208 cpu_reset(CPU(s->cpu));
209 env->pc = s->vector;
210}
211
212static struct QEMU_PACKED
213{
214 int mount_root_rdonly;
215 int ramdisk_flags;
216 int orig_root_dev;
217 int loader_type;
218 int initrd_start;
219 int initrd_size;
220
221 char pad[232];
222
223 char kernel_cmdline[256];
224} boot_params;
225
226static void r2d_init(MachineState *machine)
227{
228 const char *kernel_filename = machine->kernel_filename;
229 const char *kernel_cmdline = machine->kernel_cmdline;
230 const char *initrd_filename = machine->initrd_filename;
231 SuperHCPU *cpu;
232 CPUSH4State *env;
233 ResetData *reset_info;
234 struct SH7750State *s;
235 MemoryRegion *sdram = g_new(MemoryRegion, 1);
236 qemu_irq *irq;
237 DriveInfo *dinfo;
238 int i;
239 DeviceState *dev;
240 SysBusDevice *busdev;
241 MemoryRegion *address_space_mem = get_system_memory();
242 PCIBus *pci_bus;
243
244 cpu = SUPERH_CPU(cpu_create(machine->cpu_type));
245 env = &cpu->env;
246
247 reset_info = g_malloc0(sizeof(ResetData));
248 reset_info->cpu = cpu;
249 reset_info->vector = env->pc;
250 qemu_register_reset(main_cpu_reset, reset_info);
251
252
253 memory_region_init_ram(sdram, NULL, "r2d.sdram", SDRAM_SIZE, &error_fatal);
254 memory_region_add_subregion(address_space_mem, SDRAM_BASE, sdram);
255
256 s = sh7750_init(cpu, address_space_mem);
257 irq = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s));
258
259 dev = qdev_create(NULL, "sh_pci");
260 busdev = SYS_BUS_DEVICE(dev);
261 qdev_init_nofail(dev);
262 pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci"));
263 sysbus_mmio_map(busdev, 0, P4ADDR(0x1e200000));
264 sysbus_mmio_map(busdev, 1, A7ADDR(0x1e200000));
265 sysbus_connect_irq(busdev, 0, irq[PCI_INTA]);
266 sysbus_connect_irq(busdev, 1, irq[PCI_INTB]);
267 sysbus_connect_irq(busdev, 2, irq[PCI_INTC]);
268 sysbus_connect_irq(busdev, 3, irq[PCI_INTD]);
269
270 dev = qdev_create(NULL, "sysbus-sm501");
271 busdev = SYS_BUS_DEVICE(dev);
272 qdev_prop_set_uint32(dev, "vram-size", SM501_VRAM_SIZE);
273 qdev_prop_set_uint32(dev, "base", 0x10000000);
274 qdev_prop_set_ptr(dev, "chr-state", serial_hds[2]);
275 qdev_init_nofail(dev);
276 sysbus_mmio_map(busdev, 0, 0x10000000);
277 sysbus_mmio_map(busdev, 1, 0x13e00000);
278 sysbus_connect_irq(busdev, 0, irq[SM501]);
279
280
281 dinfo = drive_get(IF_IDE, 0, 0);
282 dev = qdev_create(NULL, "mmio-ide");
283 busdev = SYS_BUS_DEVICE(dev);
284 sysbus_connect_irq(busdev, 0, irq[CF_IDE]);
285 qdev_prop_set_uint32(dev, "shift", 1);
286 qdev_init_nofail(dev);
287 sysbus_mmio_map(busdev, 0, 0x14001000);
288 sysbus_mmio_map(busdev, 1, 0x1400080c);
289 mmio_ide_init_drives(dev, dinfo, NULL);
290
291
292 dinfo = drive_get(IF_PFLASH, 0, 0);
293 pflash_cfi02_register(0x0, NULL, "r2d.flash", FLASH_SIZE,
294 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
295 (16 * 1024), FLASH_SIZE >> 16,
296 1, 4, 0x0000, 0x0000, 0x0000, 0x0000,
297 0x555, 0x2aa, 0);
298
299
300 for (i = 0; i < nb_nics; i++)
301 pci_nic_init_nofail(&nd_table[i], pci_bus,
302 "rtl8139", i==0 ? "2" : NULL);
303
304
305 usb_create_simple(usb_bus_find(-1), "usb-kbd");
306
307
308 memset(&boot_params, 0, sizeof(boot_params));
309
310 if (kernel_filename) {
311 int kernel_size;
312
313 kernel_size = load_image_targphys(kernel_filename,
314 SDRAM_BASE + LINUX_LOAD_OFFSET,
315 INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET);
316 if (kernel_size < 0) {
317 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
318 exit(1);
319 }
320
321
322 address_space_stl(&address_space_memory, SH7750_BCR1, 1 << 3,
323 MEMTXATTRS_UNSPECIFIED, NULL);
324 address_space_stw(&address_space_memory, SH7750_BCR2, 3 << (3 * 2),
325 MEMTXATTRS_UNSPECIFIED, NULL);
326 reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000;
327 }
328
329 if (initrd_filename) {
330 int initrd_size;
331
332 initrd_size = load_image_targphys(initrd_filename,
333 SDRAM_BASE + INITRD_LOAD_OFFSET,
334 SDRAM_SIZE - INITRD_LOAD_OFFSET);
335
336 if (initrd_size < 0) {
337 fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename);
338 exit(1);
339 }
340
341
342 boot_params.loader_type = tswap32(1);
343 boot_params.initrd_start = tswap32(INITRD_LOAD_OFFSET);
344 boot_params.initrd_size = tswap32(initrd_size);
345 }
346
347 if (kernel_cmdline) {
348
349
350 strncpy(boot_params.kernel_cmdline, kernel_cmdline,
351 sizeof(boot_params.kernel_cmdline));
352 }
353
354 rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params),
355 SDRAM_BASE + BOOT_PARAMS_OFFSET);
356}
357
358static void r2d_machine_init(MachineClass *mc)
359{
360 mc->desc = "r2d-plus board";
361 mc->init = r2d_init;
362 mc->block_default_type = IF_IDE;
363 mc->default_cpu_type = TYPE_SH7751R_CPU;
364}
365
366DEFINE_MACHINE("r2d", r2d_machine_init)
367
