/* * Renesas SH7751R R2D-PLUS emulation * * Copyright (c) 2007 Magnus Damm * Copyright (c) 2008 Paul Mundt * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "sysbus.h" #include "hw.h" #include "sh.h" #include "devices.h" #include "sysemu/sysemu.h" #include "boards.h" #include "pci/pci.h" #include "net/net.h" #include "sh7750_regs.h" #include "ide.h" #include "loader.h" #include "usb.h" #include "flash.h" #include "sysemu/blockdev.h" #include "exec/address-spaces.h" #define FLASH_BASE 0x00000000 #define FLASH_SIZE 0x02000000 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */ #define SDRAM_SIZE 0x04000000 #define SM501_VRAM_SIZE 0x800000 #define BOOT_PARAMS_OFFSET 0x0010000 /* CONFIG_BOOT_LINK_OFFSET of Linux kernel */ #define LINUX_LOAD_OFFSET 0x0800000 #define INITRD_LOAD_OFFSET 0x1800000 #define PA_IRLMSK 0x00 #define PA_POWOFF 0x30 #define PA_VERREG 0x32 #define PA_OUTPORT 0x36 typedef struct { uint16_t bcr; uint16_t irlmsk; uint16_t irlmon; uint16_t cfctl; uint16_t cfpow; uint16_t dispctl; uint16_t sdmpow; uint16_t rtcce; uint16_t pcicd; uint16_t voyagerrts; uint16_t cfrst; uint16_t admrts; uint16_t extrst; uint16_t cfcdintclr; uint16_t keyctlclr; uint16_t pad0; uint16_t pad1; uint16_t verreg; uint16_t inport; uint16_t outport; uint16_t bverreg; /* output pin */ qemu_irq irl; MemoryRegion iomem; } r2d_fpga_t; enum r2d_fpga_irq { PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T, SDCARD, PCI_INTA, PCI_INTB, EXT, TP, NR_IRQS }; static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = { [CF_IDE] = { 1, 1<<9 }, [CF_CD] = { 2, 1<<8 }, [PCI_INTA] = { 9, 1<<14 }, [PCI_INTB] = { 10, 1<<13 }, [PCI_INTC] = { 3, 1<<12 }, [PCI_INTD] = { 0, 1<<11 }, [SM501] = { 4, 1<<10 }, [KEY] = { 5, 1<<6 }, [RTC_A] = { 6, 1<<5 }, [RTC_T] = { 7, 1<<4 }, [SDCARD] = { 8, 1<<7 }, [EXT] = { 11, 1<<0 }, [TP] = { 12, 1<<15 }, }; static void update_irl(r2d_fpga_t *fpga) { int i, irl = 15; for (i = 0; i < NR_IRQS; i++) if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk) if (irqtab[i].irl < irl) irl = irqtab[i].irl; qemu_set_irq(fpga->irl, irl ^ 15); } static void r2d_fpga_irq_set(void *opaque, int n, int level) { r2d_fpga_t *fpga = opaque; if (level) fpga->irlmon |= irqtab[n].msk; else fpga->irlmon &= ~irqtab[n].msk; update_irl(fpga); } static uint32_t r2d_fpga_read(void *opaque, hwaddr addr) { r2d_fpga_t *s = opaque; switch (addr) { case PA_IRLMSK: return s->irlmsk; case PA_OUTPORT: return s->outport; case PA_POWOFF: return 0x00; case PA_VERREG: return 0x10; } return 0; } static void r2d_fpga_write(void *opaque, hwaddr addr, uint32_t value) { r2d_fpga_t *s = opaque; switch (addr) { case PA_IRLMSK: s->irlmsk = value; update_irl(s); break; case PA_OUTPORT: s->outport = value; break; case PA_POWOFF: if (value & 1) { qemu_system_shutdown_request(); } break; case PA_VERREG: /* Discard writes */ break; } } static const MemoryRegionOps r2d_fpga_ops = { .old_mmio = { .read = { r2d_fpga_read, r2d_fpga_read, NULL, }, .write = { r2d_fpga_write, r2d_fpga_write, NULL, }, }, .endianness = DEVICE_NATIVE_ENDIAN, }; static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem, hwaddr base, qemu_irq irl) { r2d_fpga_t *s; s = g_malloc0(sizeof(r2d_fpga_t)); s->irl = irl; memory_region_init_io(&s->iomem, &r2d_fpga_ops, s, "r2d-fpga", 0x40); memory_region_add_subregion(sysmem, base, &s->iomem); return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS); } typedef struct ResetData { SuperHCPU *cpu; uint32_t vector; } ResetData; static void main_cpu_reset(void *opaque) { ResetData *s = (ResetData *)opaque; CPUSH4State *env = &s->cpu->env; cpu_reset(CPU(s->cpu)); env->pc = s->vector; } static struct QEMU_PACKED { int mount_root_rdonly; int ramdisk_flags; int orig_root_dev; int loader_type; int initrd_start; int initrd_size; char pad[232]; char kernel_cmdline[256]; } boot_params; static void r2d_init(QEMUMachineInitArgs *args) { const char *cpu_model = args->cpu_model; const char *kernel_filename = args->kernel_filename; const char *kernel_cmdline = args->kernel_cmdline; const char *initrd_filename = args->initrd_filename; SuperHCPU *cpu; CPUSH4State *env; ResetData *reset_info; struct SH7750State *s; MemoryRegion *sdram = g_new(MemoryRegion, 1); qemu_irq *irq; DriveInfo *dinfo; int i; DeviceState *dev; SysBusDevice *busdev; MemoryRegion *address_space_mem = get_system_memory(); if (cpu_model == NULL) { cpu_model = "SH7751R"; } cpu = cpu_sh4_init(cpu_model); if (cpu == NULL) { fprintf(stderr, "Unable to find CPU definition\n"); exit(1); } env = &cpu->env; reset_info = g_malloc0(sizeof(ResetData)); reset_info->cpu = cpu; reset_info->vector = env->pc; qemu_register_reset(main_cpu_reset, reset_info); /* Allocate memory space */ memory_region_init_ram(sdram, "r2d.sdram", SDRAM_SIZE); vmstate_register_ram_global(sdram); memory_region_add_subregion(address_space_mem, SDRAM_BASE, sdram); /* Register peripherals */ s = sh7750_init(env, address_space_mem); irq = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s)); dev = qdev_create(NULL, "sh_pci"); busdev = sysbus_from_qdev(dev); qdev_init_nofail(dev); sysbus_mmio_map(busdev, 0, P4ADDR(0x1e200000)); sysbus_mmio_map(busdev, 1, A7ADDR(0x1e200000)); sysbus_connect_irq(busdev, 0, irq[PCI_INTA]); sysbus_connect_irq(busdev, 1, irq[PCI_INTB]); sysbus_connect_irq(busdev, 2, irq[PCI_INTC]); sysbus_connect_irq(busdev, 3, irq[PCI_INTD]); sm501_init(address_space_mem, 0x10000000, SM501_VRAM_SIZE, irq[SM501], serial_hds[2]); /* onboard CF (True IDE mode, Master only). */ dinfo = drive_get(IF_IDE, 0, 0); mmio_ide_init(0x14001000, 0x1400080c, address_space_mem, irq[CF_IDE], 1, dinfo, NULL); /* onboard flash memory */ dinfo = drive_get(IF_PFLASH, 0, 0); pflash_cfi02_register(0x0, NULL, "r2d.flash", FLASH_SIZE, dinfo ? dinfo->bdrv : NULL, (16 * 1024), FLASH_SIZE >> 16, 1, 4, 0x0000, 0x0000, 0x0000, 0x0000, 0x555, 0x2aa, 0); /* NIC: rtl8139 on-board, and 2 slots. */ for (i = 0; i < nb_nics; i++) pci_nic_init_nofail(&nd_table[i], "rtl8139", i==0 ? "2" : NULL); /* USB keyboard */ usbdevice_create("keyboard"); /* Todo: register on board registers */ memset(&boot_params, 0, sizeof(boot_params)); if (kernel_filename) { int kernel_size; kernel_size = load_image_targphys(kernel_filename, SDRAM_BASE + LINUX_LOAD_OFFSET, INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET); if (kernel_size < 0) { fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); exit(1); } /* initialization which should be done by firmware */ stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */ stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */ reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */ } if (initrd_filename) { int initrd_size; initrd_size = load_image_targphys(initrd_filename, SDRAM_BASE + INITRD_LOAD_OFFSET, SDRAM_SIZE - INITRD_LOAD_OFFSET); if (initrd_size < 0) { fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename); exit(1); } /* initialization which should be done by firmware */ boot_params.loader_type = 1; boot_params.initrd_start = INITRD_LOAD_OFFSET; boot_params.initrd_size = initrd_size; } if (kernel_cmdline) { /* I see no evidence that this .kernel_cmdline buffer requires NUL-termination, so using strncpy should be ok. */ strncpy(boot_params.kernel_cmdline, kernel_cmdline, sizeof(boot_params.kernel_cmdline)); } rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params), SDRAM_BASE + BOOT_PARAMS_OFFSET); } static QEMUMachine r2d_machine = { .name = "r2d", .desc = "r2d-plus board", .init = r2d_init, DEFAULT_MACHINE_OPTIONS, }; static void r2d_machine_init(void) { qemu_register_machine(&r2d_machine); } machine_init(r2d_machine_init);