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 "qemu-common.h" 30 #include "cpu.h" 31 #include "hw/sysbus.h" 32 #include "hw/hw.h" 33 #include "hw/sh4/sh.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 "exec/address-spaces.h" 44 45 #define FLASH_BASE 0x00000000 46 #define FLASH_SIZE 0x02000000 47 48 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */ 49 #define SDRAM_SIZE 0x04000000 50 51 #define SM501_VRAM_SIZE 0x800000 52 53 #define BOOT_PARAMS_OFFSET 0x0010000 54 /* CONFIG_BOOT_LINK_OFFSET of Linux kernel */ 55 #define LINUX_LOAD_OFFSET 0x0800000 56 #define INITRD_LOAD_OFFSET 0x1800000 57 58 #define PA_IRLMSK 0x00 59 #define PA_POWOFF 0x30 60 #define PA_VERREG 0x32 61 #define PA_OUTPORT 0x36 62 63 typedef struct { 64 uint16_t bcr; 65 uint16_t irlmsk; 66 uint16_t irlmon; 67 uint16_t cfctl; 68 uint16_t cfpow; 69 uint16_t dispctl; 70 uint16_t sdmpow; 71 uint16_t rtcce; 72 uint16_t pcicd; 73 uint16_t voyagerrts; 74 uint16_t cfrst; 75 uint16_t admrts; 76 uint16_t extrst; 77 uint16_t cfcdintclr; 78 uint16_t keyctlclr; 79 uint16_t pad0; 80 uint16_t pad1; 81 uint16_t verreg; 82 uint16_t inport; 83 uint16_t outport; 84 uint16_t bverreg; 85 86 /* output pin */ 87 qemu_irq irl; 88 MemoryRegion iomem; 89 } r2d_fpga_t; 90 91 enum r2d_fpga_irq { 92 PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T, 93 SDCARD, PCI_INTA, PCI_INTB, EXT, TP, 94 NR_IRQS 95 }; 96 97 static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = { 98 [CF_IDE] = { 1, 1<<9 }, 99 [CF_CD] = { 2, 1<<8 }, 100 [PCI_INTA] = { 9, 1<<14 }, 101 [PCI_INTB] = { 10, 1<<13 }, 102 [PCI_INTC] = { 3, 1<<12 }, 103 [PCI_INTD] = { 0, 1<<11 }, 104 [SM501] = { 4, 1<<10 }, 105 [KEY] = { 5, 1<<6 }, 106 [RTC_A] = { 6, 1<<5 }, 107 [RTC_T] = { 7, 1<<4 }, 108 [SDCARD] = { 8, 1<<7 }, 109 [EXT] = { 11, 1<<0 }, 110 [TP] = { 12, 1<<15 }, 111 }; 112 113 static void update_irl(r2d_fpga_t *fpga) 114 { 115 int i, irl = 15; 116 for (i = 0; i < NR_IRQS; i++) 117 if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk) 118 if (irqtab[i].irl < irl) 119 irl = irqtab[i].irl; 120 qemu_set_irq(fpga->irl, irl ^ 15); 121 } 122 123 static void r2d_fpga_irq_set(void *opaque, int n, int level) 124 { 125 r2d_fpga_t *fpga = opaque; 126 if (level) 127 fpga->irlmon |= irqtab[n].msk; 128 else 129 fpga->irlmon &= ~irqtab[n].msk; 130 update_irl(fpga); 131 } 132 133 static uint64_t r2d_fpga_read(void *opaque, hwaddr addr, unsigned int size) 134 { 135 r2d_fpga_t *s = opaque; 136 137 switch (addr) { 138 case PA_IRLMSK: 139 return s->irlmsk; 140 case PA_OUTPORT: 141 return s->outport; 142 case PA_POWOFF: 143 return 0x00; 144 case PA_VERREG: 145 return 0x10; 146 } 147 148 return 0; 149 } 150 151 static void 152 r2d_fpga_write(void *opaque, hwaddr addr, uint64_t value, unsigned int size) 153 { 154 r2d_fpga_t *s = opaque; 155 156 switch (addr) { 157 case PA_IRLMSK: 158 s->irlmsk = value; 159 update_irl(s); 160 break; 161 case PA_OUTPORT: 162 s->outport = value; 163 break; 164 case PA_POWOFF: 165 if (value & 1) { 166 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 167 } 168 break; 169 case PA_VERREG: 170 /* Discard writes */ 171 break; 172 } 173 } 174 175 static const MemoryRegionOps r2d_fpga_ops = { 176 .read = r2d_fpga_read, 177 .write = r2d_fpga_write, 178 .impl.min_access_size = 2, 179 .impl.max_access_size = 2, 180 .endianness = DEVICE_NATIVE_ENDIAN, 181 }; 182 183 static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem, 184 hwaddr base, qemu_irq irl) 185 { 186 r2d_fpga_t *s; 187 188 s = g_malloc0(sizeof(r2d_fpga_t)); 189 190 s->irl = irl; 191 192 memory_region_init_io(&s->iomem, NULL, &r2d_fpga_ops, s, "r2d-fpga", 0x40); 193 memory_region_add_subregion(sysmem, base, &s->iomem); 194 return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS); 195 } 196 197 typedef struct ResetData { 198 SuperHCPU *cpu; 199 uint32_t vector; 200 } ResetData; 201 202 static void main_cpu_reset(void *opaque) 203 { 204 ResetData *s = (ResetData *)opaque; 205 CPUSH4State *env = &s->cpu->env; 206 207 cpu_reset(CPU(s->cpu)); 208 env->pc = s->vector; 209 } 210 211 static struct QEMU_PACKED 212 { 213 int mount_root_rdonly; 214 int ramdisk_flags; 215 int orig_root_dev; 216 int loader_type; 217 int initrd_start; 218 int initrd_size; 219 220 char pad[232]; 221 222 char kernel_cmdline[256] QEMU_NONSTRING; 223 } boot_params; 224 225 static void r2d_init(MachineState *machine) 226 { 227 const char *kernel_filename = machine->kernel_filename; 228 const char *kernel_cmdline = machine->kernel_cmdline; 229 const char *initrd_filename = machine->initrd_filename; 230 SuperHCPU *cpu; 231 CPUSH4State *env; 232 ResetData *reset_info; 233 struct SH7750State *s; 234 MemoryRegion *sdram = g_new(MemoryRegion, 1); 235 qemu_irq *irq; 236 DriveInfo *dinfo; 237 int i; 238 DeviceState *dev; 239 SysBusDevice *busdev; 240 MemoryRegion *address_space_mem = get_system_memory(); 241 PCIBus *pci_bus; 242 243 cpu = SUPERH_CPU(cpu_create(machine->cpu_type)); 244 env = &cpu->env; 245 246 reset_info = g_malloc0(sizeof(ResetData)); 247 reset_info->cpu = cpu; 248 reset_info->vector = env->pc; 249 qemu_register_reset(main_cpu_reset, reset_info); 250 251 /* Allocate memory space */ 252 memory_region_init_ram(sdram, NULL, "r2d.sdram", SDRAM_SIZE, &error_fatal); 253 memory_region_add_subregion(address_space_mem, SDRAM_BASE, sdram); 254 /* Register peripherals */ 255 s = sh7750_init(cpu, address_space_mem); 256 irq = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s)); 257 258 dev = qdev_create(NULL, "sh_pci"); 259 busdev = SYS_BUS_DEVICE(dev); 260 qdev_init_nofail(dev); 261 pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci")); 262 sysbus_mmio_map(busdev, 0, P4ADDR(0x1e200000)); 263 sysbus_mmio_map(busdev, 1, A7ADDR(0x1e200000)); 264 sysbus_connect_irq(busdev, 0, irq[PCI_INTA]); 265 sysbus_connect_irq(busdev, 1, irq[PCI_INTB]); 266 sysbus_connect_irq(busdev, 2, irq[PCI_INTC]); 267 sysbus_connect_irq(busdev, 3, irq[PCI_INTD]); 268 269 dev = qdev_create(NULL, "sysbus-sm501"); 270 busdev = SYS_BUS_DEVICE(dev); 271 qdev_prop_set_uint32(dev, "vram-size", SM501_VRAM_SIZE); 272 qdev_prop_set_uint32(dev, "base", 0x10000000); 273 qdev_prop_set_ptr(dev, "chr-state", serial_hd(2)); 274 qdev_init_nofail(dev); 275 sysbus_mmio_map(busdev, 0, 0x10000000); 276 sysbus_mmio_map(busdev, 1, 0x13e00000); 277 sysbus_connect_irq(busdev, 0, irq[SM501]); 278 279 /* onboard CF (True IDE mode, Master only). */ 280 dinfo = drive_get(IF_IDE, 0, 0); 281 dev = qdev_create(NULL, "mmio-ide"); 282 busdev = SYS_BUS_DEVICE(dev); 283 sysbus_connect_irq(busdev, 0, irq[CF_IDE]); 284 qdev_prop_set_uint32(dev, "shift", 1); 285 qdev_init_nofail(dev); 286 sysbus_mmio_map(busdev, 0, 0x14001000); 287 sysbus_mmio_map(busdev, 1, 0x1400080c); 288 mmio_ide_init_drives(dev, dinfo, NULL); 289 290 /* onboard flash memory */ 291 dinfo = drive_get(IF_PFLASH, 0, 0); 292 pflash_cfi02_register(0x0, NULL, "r2d.flash", FLASH_SIZE, 293 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 294 16 * KiB, FLASH_SIZE >> 16, 295 1, 4, 0x0000, 0x0000, 0x0000, 0x0000, 296 0x555, 0x2aa, 0); 297 298 /* NIC: rtl8139 on-board, and 2 slots. */ 299 for (i = 0; i < nb_nics; i++) 300 pci_nic_init_nofail(&nd_table[i], pci_bus, 301 "rtl8139", i==0 ? "2" : NULL); 302 303 /* USB keyboard */ 304 usb_create_simple(usb_bus_find(-1), "usb-kbd"); 305 306 /* Todo: register on board registers */ 307 memset(&boot_params, 0, sizeof(boot_params)); 308 309 if (kernel_filename) { 310 int kernel_size; 311 312 kernel_size = load_image_targphys(kernel_filename, 313 SDRAM_BASE + LINUX_LOAD_OFFSET, 314 INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET); 315 if (kernel_size < 0) { 316 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); 317 exit(1); 318 } 319 320 /* initialization which should be done by firmware */ 321 address_space_stl(&address_space_memory, SH7750_BCR1, 1 << 3, 322 MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 SDRAM */ 323 address_space_stw(&address_space_memory, SH7750_BCR2, 3 << (3 * 2), 324 MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 32bit */ 325 reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */ 326 } 327 328 if (initrd_filename) { 329 int initrd_size; 330 331 initrd_size = load_image_targphys(initrd_filename, 332 SDRAM_BASE + INITRD_LOAD_OFFSET, 333 SDRAM_SIZE - INITRD_LOAD_OFFSET); 334 335 if (initrd_size < 0) { 336 fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename); 337 exit(1); 338 } 339 340 /* initialization which should be done by firmware */ 341 boot_params.loader_type = tswap32(1); 342 boot_params.initrd_start = tswap32(INITRD_LOAD_OFFSET); 343 boot_params.initrd_size = tswap32(initrd_size); 344 } 345 346 if (kernel_cmdline) { 347 /* I see no evidence that this .kernel_cmdline buffer requires 348 NUL-termination, so using strncpy should be ok. */ 349 strncpy(boot_params.kernel_cmdline, kernel_cmdline, 350 sizeof(boot_params.kernel_cmdline)); 351 } 352 353 rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params), 354 SDRAM_BASE + BOOT_PARAMS_OFFSET); 355 } 356 357 static void r2d_machine_init(MachineClass *mc) 358 { 359 mc->desc = "r2d-plus board"; 360 mc->init = r2d_init; 361 mc->block_default_type = IF_IDE; 362 mc->default_cpu_type = TYPE_SH7751R_CPU; 363 } 364 365 DEFINE_MACHINE("r2d", r2d_machine_init) 366