/* * Generic PKUnity SoC machine and board descriptor * * Copyright (C) 2010-2012 Guan Xuetao * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation, or any later version. * See the COPYING file in the top-level directory. */ #include "qemu-common.h" #include "ui/console.h" #include "elf.h" #include "exec/address-spaces.h" #include "hw/sysbus.h" #include "hw/boards.h" #include "hw/loader.h" #include "hw/i386/pc.h" #undef DEBUG_PUV3 #include "hw/unicore32/puv3.h" #define KERNEL_LOAD_ADDR 0x03000000 #define KERNEL_MAX_SIZE 0x00800000 /* Just a guess */ static void puv3_intc_cpu_handler(void *opaque, int irq, int level) { UniCore32CPU *cpu = opaque; CPUState *cs = CPU(cpu); assert(irq == 0); if (level) { cpu_interrupt(cs, CPU_INTERRUPT_HARD); } else { cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); } } static void puv3_soc_init(CPUUniCore32State *env) { qemu_irq *cpu_intc, irqs[PUV3_IRQS_NR]; DeviceState *dev; MemoryRegion *i8042 = g_new(MemoryRegion, 1); int i; /* Initialize interrupt controller */ cpu_intc = qemu_allocate_irqs(puv3_intc_cpu_handler, uc32_env_get_cpu(env), 1); dev = sysbus_create_simple("puv3_intc", PUV3_INTC_BASE, *cpu_intc); for (i = 0; i < PUV3_IRQS_NR; i++) { irqs[i] = qdev_get_gpio_in(dev, i); } /* Initialize minimal necessary devices for kernel booting */ sysbus_create_simple("puv3_pm", PUV3_PM_BASE, NULL); sysbus_create_simple("puv3_dma", PUV3_DMA_BASE, NULL); sysbus_create_simple("puv3_ost", PUV3_OST_BASE, irqs[PUV3_IRQS_OST0]); sysbus_create_varargs("puv3_gpio", PUV3_GPIO_BASE, irqs[PUV3_IRQS_GPIOLOW0], irqs[PUV3_IRQS_GPIOLOW1], irqs[PUV3_IRQS_GPIOLOW2], irqs[PUV3_IRQS_GPIOLOW3], irqs[PUV3_IRQS_GPIOLOW4], irqs[PUV3_IRQS_GPIOLOW5], irqs[PUV3_IRQS_GPIOLOW6], irqs[PUV3_IRQS_GPIOLOW7], irqs[PUV3_IRQS_GPIOHIGH], NULL); /* Keyboard (i8042), mouse disabled for nographic */ i8042_mm_init(irqs[PUV3_IRQS_PS2_KBD], NULL, i8042, PUV3_REGS_OFFSET, 4); memory_region_add_subregion(get_system_memory(), PUV3_PS2_BASE, i8042); } static void puv3_board_init(CPUUniCore32State *env, ram_addr_t ram_size) { MemoryRegion *ram_memory = g_new(MemoryRegion, 1); /* SDRAM at address zero. */ memory_region_init_ram(ram_memory, "puv3.ram", ram_size); vmstate_register_ram_global(ram_memory); memory_region_add_subregion(get_system_memory(), 0, ram_memory); } static const GraphicHwOps no_ops; static void puv3_load_kernel(const char *kernel_filename) { int size; assert(kernel_filename != NULL); /* only zImage format supported */ size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, KERNEL_MAX_SIZE); if (size < 0) { hw_error("Load kernel error: '%s'\n", kernel_filename); } /* cheat curses that we have a graphic console, only under ocd console */ graphic_console_init(&no_ops, NULL); } static void puv3_init(QEMUMachineInitArgs *args) { ram_addr_t ram_size = args->ram_size; const char *cpu_model = args->cpu_model; const char *kernel_filename = args->kernel_filename; const char *initrd_filename = args->initrd_filename; CPUUniCore32State *env; if (initrd_filename) { hw_error("Please use kernel built-in initramdisk.\n"); } if (!cpu_model) { cpu_model = "UniCore-II"; } env = cpu_init(cpu_model); if (!env) { hw_error("Unable to find CPU definition\n"); } puv3_soc_init(env); puv3_board_init(env, ram_size); puv3_load_kernel(kernel_filename); } static QEMUMachine puv3_machine = { .name = "puv3", .desc = "PKUnity Version-3 based on UniCore32", .init = puv3_init, .is_default = 1, DEFAULT_MACHINE_OPTIONS, }; static void puv3_machine_init(void) { qemu_register_machine(&puv3_machine); } machine_init(puv3_machine_init)