/* * Model of Xilinx Virtex5 ML507 PPC-440 refdesign. * * Copyright (c) 2010 Edgar E. Iglesias. * * 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 "qemu/osdep.h" #include "hw/sysbus.h" #include "hw/hw.h" #include "hw/char/serial.h" #include "hw/block/flash.h" #include "sysemu/sysemu.h" #include "hw/devices.h" #include "hw/boards.h" #include "sysemu/device_tree.h" #include "hw/loader.h" #include "elf.h" #include "qemu/error-report.h" #include "qemu/log.h" #include "exec/address-spaces.h" #include "hw/ppc/ppc.h" #include "hw/ppc/ppc4xx.h" #include "ppc405.h" #include "sysemu/block-backend.h" #define EPAPR_MAGIC (0x45504150) #define FLASH_SIZE (16 * 1024 * 1024) #define INTC_BASEADDR 0x81800000 #define UART16550_BASEADDR 0x83e01003 #define TIMER_BASEADDR 0x83c00000 #define PFLASH_BASEADDR 0xfc000000 #define TIMER_IRQ 3 #define UART16550_IRQ 9 static struct boot_info { uint32_t bootstrap_pc; uint32_t cmdline; uint32_t fdt; uint32_t ima_size; void *vfdt; } boot_info; /* Create reset TLB entries for BookE, spanning the 32bit addr space. */ static void mmubooke_create_initial_mapping(CPUPPCState *env, target_ulong va, hwaddr pa) { ppcemb_tlb_t *tlb = &env->tlb.tlbe[0]; tlb->attr = 0; tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); tlb->size = 1U << 31; /* up to 0x80000000 */ tlb->EPN = va & TARGET_PAGE_MASK; tlb->RPN = pa & TARGET_PAGE_MASK; tlb->PID = 0; tlb = &env->tlb.tlbe[1]; tlb->attr = 0; tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4); tlb->size = 1U << 31; /* up to 0xffffffff */ tlb->EPN = 0x80000000 & TARGET_PAGE_MASK; tlb->RPN = 0x80000000 & TARGET_PAGE_MASK; tlb->PID = 0; } static PowerPCCPU *ppc440_init_xilinx(ram_addr_t *ram_size, int do_init, const char *cpu_model, uint32_t sysclk) { PowerPCCPU *cpu; CPUPPCState *env; qemu_irq *irqs; cpu = cpu_ppc_init(cpu_model); if (cpu == NULL) { fprintf(stderr, "Unable to initialize CPU!\n"); exit(1); } env = &cpu->env; ppc_booke_timers_init(cpu, sysclk, 0/* no flags */); ppc_dcr_init(env, NULL, NULL); /* interrupt controller */ irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB); irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT]; irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT]; ppcuic_init(env, irqs, 0x0C0, 0, 1); return cpu; } static void main_cpu_reset(void *opaque) { PowerPCCPU *cpu = opaque; CPUPPCState *env = &cpu->env; struct boot_info *bi = env->load_info; cpu_reset(CPU(cpu)); /* Linux Kernel Parameters (passing device tree): * r3: pointer to the fdt * r4: 0 * r5: 0 * r6: epapr magic * r7: size of IMA in bytes * r8: 0 * r9: 0 */ env->gpr[1] = (16<<20) - 8; /* Provide a device-tree. */ env->gpr[3] = bi->fdt; env->nip = bi->bootstrap_pc; /* Create a mapping for the kernel. */ mmubooke_create_initial_mapping(env, 0, 0); env->gpr[6] = tswap32(EPAPR_MAGIC); env->gpr[7] = bi->ima_size; } #define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb" static int xilinx_load_device_tree(hwaddr addr, uint32_t ramsize, hwaddr initrd_base, hwaddr initrd_size, const char *kernel_cmdline) { char *path; int fdt_size; void *fdt = NULL; int r; const char *dtb_filename; dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb"); if (dtb_filename) { fdt = load_device_tree(dtb_filename, &fdt_size); if (!fdt) { error_report("Error while loading device tree file '%s'", dtb_filename); } } else { /* Try the local "ppc.dtb" override. */ fdt = load_device_tree("ppc.dtb", &fdt_size); if (!fdt) { path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); if (path) { fdt = load_device_tree(path, &fdt_size); g_free(path); } } } if (!fdt) { return 0; } r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start", initrd_base); if (r < 0) { error_report("couldn't set /chosen/linux,initrd-start"); } r = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", (initrd_base + initrd_size)); if (r < 0) { error_report("couldn't set /chosen/linux,initrd-end"); } r = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline); if (r < 0) fprintf(stderr, "couldn't set /chosen/bootargs\n"); cpu_physical_memory_write(addr, fdt, fdt_size); return fdt_size; } static void virtex_init(MachineState *machine) { ram_addr_t ram_size = machine->ram_size; const char *kernel_filename = machine->kernel_filename; const char *kernel_cmdline = machine->kernel_cmdline; hwaddr initrd_base = 0; int initrd_size = 0; MemoryRegion *address_space_mem = get_system_memory(); DeviceState *dev; PowerPCCPU *cpu; CPUPPCState *env; hwaddr ram_base = 0; DriveInfo *dinfo; MemoryRegion *phys_ram = g_new(MemoryRegion, 1); qemu_irq irq[32], *cpu_irq; int kernel_size; int i; /* init CPUs */ if (machine->cpu_model == NULL) { machine->cpu_model = "440-Xilinx"; } cpu = ppc440_init_xilinx(&ram_size, 1, machine->cpu_model, 400000000); env = &cpu->env; qemu_register_reset(main_cpu_reset, cpu); memory_region_allocate_system_memory(phys_ram, NULL, "ram", ram_size); memory_region_add_subregion(address_space_mem, ram_base, phys_ram); dinfo = drive_get(IF_PFLASH, 0, 0); pflash_cfi01_register(PFLASH_BASEADDR, NULL, "virtex.flash", FLASH_SIZE, dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, (64 * 1024), FLASH_SIZE >> 16, 1, 0x89, 0x18, 0x0000, 0x0, 1); cpu_irq = (qemu_irq *) &env->irq_inputs[PPC40x_INPUT_INT]; dev = qdev_create(NULL, "xlnx.xps-intc"); qdev_prop_set_uint32(dev, "kind-of-intr", 0); qdev_init_nofail(dev); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR); sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, cpu_irq[0]); for (i = 0; i < 32; i++) { irq[i] = qdev_get_gpio_in(dev, i); } serial_mm_init(address_space_mem, UART16550_BASEADDR, 2, irq[UART16550_IRQ], 115200, serial_hds[0], DEVICE_LITTLE_ENDIAN); /* 2 timers at irq 2 @ 62 Mhz. */ dev = qdev_create(NULL, "xlnx.xps-timer"); qdev_prop_set_uint32(dev, "one-timer-only", 0); qdev_prop_set_uint32(dev, "clock-frequency", 62 * 1000000); qdev_init_nofail(dev); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR); sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]); if (kernel_filename) { uint64_t entry, low, high; hwaddr boot_offset; /* Boots a kernel elf binary. */ kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, &low, &high, 1, PPC_ELF_MACHINE, 0, 0); boot_info.bootstrap_pc = entry & 0x00ffffff; if (kernel_size < 0) { boot_offset = 0x1200000; /* If we failed loading ELF's try a raw image. */ kernel_size = load_image_targphys(kernel_filename, boot_offset, ram_size); boot_info.bootstrap_pc = boot_offset; high = boot_info.bootstrap_pc + kernel_size + 8192; } boot_info.ima_size = kernel_size; /* Load initrd. */ if (machine->initrd_filename) { initrd_base = high = ROUND_UP(high, 4); initrd_size = load_image_targphys(machine->initrd_filename, high, ram_size - high); if (initrd_size < 0) { error_report("couldn't load ram disk '%s'", machine->initrd_filename); exit(1); } high = ROUND_UP(high + initrd_size, 4); } /* Provide a device-tree. */ boot_info.fdt = high + (8192 * 2); boot_info.fdt &= ~8191; xilinx_load_device_tree(boot_info.fdt, ram_size, initrd_base, initrd_size, kernel_cmdline); } env->load_info = &boot_info; } static void virtex_machine_init(MachineClass *mc) { mc->desc = "Xilinx Virtex ML507 reference design"; mc->init = virtex_init; } DEFINE_MACHINE("virtex-ml507", virtex_machine_init)