1 /* 2 * Renesas SH7751R R2D-PLUS emulation 3 * 4 * Copyright (c) 2007 Magnus Damm 5 * Copyright (c) 2008 Paul Mundt 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 26 #include "qemu/osdep.h" 27 #include "qemu/units.h" 28 #include "qapi/error.h" 29 #include "cpu.h" 30 #include "hw/sysbus.h" 31 #include "hw/sh4/sh.h" 32 #include "sysemu/reset.h" 33 #include "sysemu/runstate.h" 34 #include "sysemu/sysemu.h" 35 #include "hw/boards.h" 36 #include "hw/pci/pci.h" 37 #include "hw/qdev-properties.h" 38 #include "net/net.h" 39 #include "sh7750_regs.h" 40 #include "hw/ide.h" 41 #include "hw/irq.h" 42 #include "hw/loader.h" 43 #include "hw/usb.h" 44 #include "hw/block/flash.h" 45 #include "exec/address-spaces.h" 46 47 #define FLASH_BASE 0x00000000 48 #define FLASH_SIZE (16 * MiB) 49 50 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */ 51 #define SDRAM_SIZE 0x04000000 52 53 #define SM501_VRAM_SIZE 0x800000 54 55 #define BOOT_PARAMS_OFFSET 0x0010000 56 /* CONFIG_BOOT_LINK_OFFSET of Linux kernel */ 57 #define LINUX_LOAD_OFFSET 0x0800000 58 #define INITRD_LOAD_OFFSET 0x1800000 59 60 #define PA_IRLMSK 0x00 61 #define PA_POWOFF 0x30 62 #define PA_VERREG 0x32 63 #define PA_OUTPORT 0x36 64 65 typedef struct { 66 uint16_t bcr; 67 uint16_t irlmsk; 68 uint16_t irlmon; 69 uint16_t cfctl; 70 uint16_t cfpow; 71 uint16_t dispctl; 72 uint16_t sdmpow; 73 uint16_t rtcce; 74 uint16_t pcicd; 75 uint16_t voyagerrts; 76 uint16_t cfrst; 77 uint16_t admrts; 78 uint16_t extrst; 79 uint16_t cfcdintclr; 80 uint16_t keyctlclr; 81 uint16_t pad0; 82 uint16_t pad1; 83 uint16_t verreg; 84 uint16_t inport; 85 uint16_t outport; 86 uint16_t bverreg; 87 88 /* output pin */ 89 qemu_irq irl; 90 MemoryRegion iomem; 91 } r2d_fpga_t; 92 93 enum r2d_fpga_irq { 94 PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T, 95 SDCARD, PCI_INTA, PCI_INTB, EXT, TP, 96 NR_IRQS 97 }; 98 99 static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = { 100 [CF_IDE] = { 1, 1<<9 }, 101 [CF_CD] = { 2, 1<<8 }, 102 [PCI_INTA] = { 9, 1<<14 }, 103 [PCI_INTB] = { 10, 1<<13 }, 104 [PCI_INTC] = { 3, 1<<12 }, 105 [PCI_INTD] = { 0, 1<<11 }, 106 [SM501] = { 4, 1<<10 }, 107 [KEY] = { 5, 1<<6 }, 108 [RTC_A] = { 6, 1<<5 }, 109 [RTC_T] = { 7, 1<<4 }, 110 [SDCARD] = { 8, 1<<7 }, 111 [EXT] = { 11, 1<<0 }, 112 [TP] = { 12, 1<<15 }, 113 }; 114 115 static void update_irl(r2d_fpga_t *fpga) 116 { 117 int i, irl = 15; 118 for (i = 0; i < NR_IRQS; i++) 119 if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk) 120 if (irqtab[i].irl < irl) 121 irl = irqtab[i].irl; 122 qemu_set_irq(fpga->irl, irl ^ 15); 123 } 124 125 static void r2d_fpga_irq_set(void *opaque, int n, int level) 126 { 127 r2d_fpga_t *fpga = opaque; 128 if (level) 129 fpga->irlmon |= irqtab[n].msk; 130 else 131 fpga->irlmon &= ~irqtab[n].msk; 132 update_irl(fpga); 133 } 134 135 static uint64_t r2d_fpga_read(void *opaque, hwaddr addr, unsigned int size) 136 { 137 r2d_fpga_t *s = opaque; 138 139 switch (addr) { 140 case PA_IRLMSK: 141 return s->irlmsk; 142 case PA_OUTPORT: 143 return s->outport; 144 case PA_POWOFF: 145 return 0x00; 146 case PA_VERREG: 147 return 0x10; 148 } 149 150 return 0; 151 } 152 153 static void 154 r2d_fpga_write(void *opaque, hwaddr addr, uint64_t value, unsigned int size) 155 { 156 r2d_fpga_t *s = opaque; 157 158 switch (addr) { 159 case PA_IRLMSK: 160 s->irlmsk = value; 161 update_irl(s); 162 break; 163 case PA_OUTPORT: 164 s->outport = value; 165 break; 166 case PA_POWOFF: 167 if (value & 1) { 168 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 169 } 170 break; 171 case PA_VERREG: 172 /* Discard writes */ 173 break; 174 } 175 } 176 177 static const MemoryRegionOps r2d_fpga_ops = { 178 .read = r2d_fpga_read, 179 .write = r2d_fpga_write, 180 .impl.min_access_size = 2, 181 .impl.max_access_size = 2, 182 .endianness = DEVICE_NATIVE_ENDIAN, 183 }; 184 185 static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem, 186 hwaddr base, qemu_irq irl) 187 { 188 r2d_fpga_t *s; 189 190 s = g_malloc0(sizeof(r2d_fpga_t)); 191 192 s->irl = irl; 193 194 memory_region_init_io(&s->iomem, NULL, &r2d_fpga_ops, s, "r2d-fpga", 0x40); 195 memory_region_add_subregion(sysmem, base, &s->iomem); 196 return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS); 197 } 198 199 typedef struct ResetData { 200 SuperHCPU *cpu; 201 uint32_t vector; 202 } ResetData; 203 204 static void main_cpu_reset(void *opaque) 205 { 206 ResetData *s = (ResetData *)opaque; 207 CPUSH4State *env = &s->cpu->env; 208 209 cpu_reset(CPU(s->cpu)); 210 env->pc = s->vector; 211 } 212 213 static struct QEMU_PACKED 214 { 215 int mount_root_rdonly; 216 int ramdisk_flags; 217 int orig_root_dev; 218 int loader_type; 219 int initrd_start; 220 int initrd_size; 221 222 char pad[232]; 223 224 char kernel_cmdline[256] QEMU_NONSTRING; 225 } boot_params; 226 227 static void r2d_init(MachineState *machine) 228 { 229 const char *kernel_filename = machine->kernel_filename; 230 const char *kernel_cmdline = machine->kernel_cmdline; 231 const char *initrd_filename = machine->initrd_filename; 232 SuperHCPU *cpu; 233 CPUSH4State *env; 234 ResetData *reset_info; 235 struct SH7750State *s; 236 MemoryRegion *sdram = g_new(MemoryRegion, 1); 237 qemu_irq *irq; 238 DriveInfo *dinfo; 239 int i; 240 DeviceState *dev; 241 SysBusDevice *busdev; 242 MemoryRegion *address_space_mem = get_system_memory(); 243 PCIBus *pci_bus; 244 245 cpu = SUPERH_CPU(cpu_create(machine->cpu_type)); 246 env = &cpu->env; 247 248 reset_info = g_malloc0(sizeof(ResetData)); 249 reset_info->cpu = cpu; 250 reset_info->vector = env->pc; 251 qemu_register_reset(main_cpu_reset, reset_info); 252 253 /* Allocate memory space */ 254 memory_region_init_ram(sdram, NULL, "r2d.sdram", SDRAM_SIZE, &error_fatal); 255 memory_region_add_subregion(address_space_mem, SDRAM_BASE, sdram); 256 /* Register peripherals */ 257 s = sh7750_init(cpu, address_space_mem); 258 irq = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s)); 259 260 dev = qdev_new("sh_pci"); 261 busdev = SYS_BUS_DEVICE(dev); 262 sysbus_realize_and_unref(busdev, &error_fatal); 263 pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci")); 264 sysbus_mmio_map(busdev, 0, P4ADDR(0x1e200000)); 265 sysbus_mmio_map(busdev, 1, A7ADDR(0x1e200000)); 266 sysbus_connect_irq(busdev, 0, irq[PCI_INTA]); 267 sysbus_connect_irq(busdev, 1, irq[PCI_INTB]); 268 sysbus_connect_irq(busdev, 2, irq[PCI_INTC]); 269 sysbus_connect_irq(busdev, 3, irq[PCI_INTD]); 270 271 dev = qdev_new("sysbus-sm501"); 272 busdev = SYS_BUS_DEVICE(dev); 273 qdev_prop_set_uint32(dev, "vram-size", SM501_VRAM_SIZE); 274 qdev_prop_set_uint32(dev, "base", 0x10000000); 275 qdev_prop_set_chr(dev, "chardev", serial_hd(2)); 276 sysbus_realize_and_unref(busdev, &error_fatal); 277 sysbus_mmio_map(busdev, 0, 0x10000000); 278 sysbus_mmio_map(busdev, 1, 0x13e00000); 279 sysbus_connect_irq(busdev, 0, irq[SM501]); 280 281 /* onboard CF (True IDE mode, Master only). */ 282 dinfo = drive_get(IF_IDE, 0, 0); 283 dev = qdev_new("mmio-ide"); 284 busdev = SYS_BUS_DEVICE(dev); 285 sysbus_connect_irq(busdev, 0, irq[CF_IDE]); 286 qdev_prop_set_uint32(dev, "shift", 1); 287 sysbus_realize_and_unref(busdev, &error_fatal); 288 sysbus_mmio_map(busdev, 0, 0x14001000); 289 sysbus_mmio_map(busdev, 1, 0x1400080c); 290 mmio_ide_init_drives(dev, dinfo, NULL); 291 292 /* 293 * Onboard flash memory 294 * According to the old board user document in Japanese (under 295 * NDA) what is referred to as FROM (Area0) is connected via a 296 * 32-bit bus and CS0 to CN8. The docs mention a Cypress 297 * S29PL127J60TFI130 chipsset. Per the 'S29PL-J 002-00615 298 * Rev. *E' datasheet, it is a 128Mbit NOR parallel flash 299 * addressable in words of 16bit. 300 */ 301 dinfo = drive_get(IF_PFLASH, 0, 0); 302 pflash_cfi02_register(0x0, "r2d.flash", FLASH_SIZE, 303 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 304 64 * KiB, 1, 2, 0x0001, 0x227e, 0x2220, 0x2200, 305 0x555, 0x2aa, 0); 306 307 /* NIC: rtl8139 on-board, and 2 slots. */ 308 for (i = 0; i < nb_nics; i++) 309 pci_nic_init_nofail(&nd_table[i], pci_bus, 310 "rtl8139", i==0 ? "2" : NULL); 311 312 /* USB keyboard */ 313 usb_create_simple(usb_bus_find(-1), "usb-kbd"); 314 315 /* Todo: register on board registers */ 316 memset(&boot_params, 0, sizeof(boot_params)); 317 318 if (kernel_filename) { 319 int kernel_size; 320 321 kernel_size = load_image_targphys(kernel_filename, 322 SDRAM_BASE + LINUX_LOAD_OFFSET, 323 INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET); 324 if (kernel_size < 0) { 325 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); 326 exit(1); 327 } 328 329 /* initialization which should be done by firmware */ 330 address_space_stl(&address_space_memory, SH7750_BCR1, 1 << 3, 331 MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 SDRAM */ 332 address_space_stw(&address_space_memory, SH7750_BCR2, 3 << (3 * 2), 333 MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 32bit */ 334 reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */ 335 } 336 337 if (initrd_filename) { 338 int initrd_size; 339 340 initrd_size = load_image_targphys(initrd_filename, 341 SDRAM_BASE + INITRD_LOAD_OFFSET, 342 SDRAM_SIZE - INITRD_LOAD_OFFSET); 343 344 if (initrd_size < 0) { 345 fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename); 346 exit(1); 347 } 348 349 /* initialization which should be done by firmware */ 350 boot_params.loader_type = tswap32(1); 351 boot_params.initrd_start = tswap32(INITRD_LOAD_OFFSET); 352 boot_params.initrd_size = tswap32(initrd_size); 353 } 354 355 if (kernel_cmdline) { 356 /* I see no evidence that this .kernel_cmdline buffer requires 357 NUL-termination, so using strncpy should be ok. */ 358 strncpy(boot_params.kernel_cmdline, kernel_cmdline, 359 sizeof(boot_params.kernel_cmdline)); 360 } 361 362 rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params), 363 SDRAM_BASE + BOOT_PARAMS_OFFSET); 364 } 365 366 static void r2d_machine_init(MachineClass *mc) 367 { 368 mc->desc = "r2d-plus board"; 369 mc->init = r2d_init; 370 mc->block_default_type = IF_IDE; 371 mc->default_cpu_type = TYPE_SH7751R_CPU; 372 } 373 374 DEFINE_MACHINE("r2d", r2d_machine_init) 375