2 * Generic PKUnity SoC machine and board descriptor
4 * Copyright (C) 2010-2012 Guan Xuetao
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation, or any later version.
9 * See the COPYING file in the top-level directory.
12 #include "qemu-common.h"
13 #include "ui/console.h"
15 #include "exec/address-spaces.h"
24 #define KERNEL_LOAD_ADDR 0x03000000
25 #define KERNEL_MAX_SIZE 0x00800000 /* Just a guess */
27 static void puv3_intc_cpu_handler(void *opaque, int irq, int level)
29 CPUUniCore32State *env = opaque;
33 cpu_interrupt(env, CPU_INTERRUPT_HARD);
35 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
39 static void puv3_soc_init(CPUUniCore32State *env)
41 qemu_irq *cpu_intc, irqs[PUV3_IRQS_NR];
43 MemoryRegion *i8042 = g_new(MemoryRegion, 1);
46 /* Initialize interrupt controller */
47 cpu_intc = qemu_allocate_irqs(puv3_intc_cpu_handler, env, 1);
48 dev = sysbus_create_simple("puv3_intc", PUV3_INTC_BASE, *cpu_intc);
49 for (i = 0; i < PUV3_IRQS_NR; i++) {
50 irqs[i] = qdev_get_gpio_in(dev, i);
53 /* Initialize minimal necessary devices for kernel booting */
54 sysbus_create_simple("puv3_pm", PUV3_PM_BASE, NULL);
55 sysbus_create_simple("puv3_dma", PUV3_DMA_BASE, NULL);
56 sysbus_create_simple("puv3_ost", PUV3_OST_BASE, irqs[PUV3_IRQS_OST0]);
57 sysbus_create_varargs("puv3_gpio", PUV3_GPIO_BASE,
58 irqs[PUV3_IRQS_GPIOLOW0], irqs[PUV3_IRQS_GPIOLOW1],
59 irqs[PUV3_IRQS_GPIOLOW2], irqs[PUV3_IRQS_GPIOLOW3],
60 irqs[PUV3_IRQS_GPIOLOW4], irqs[PUV3_IRQS_GPIOLOW5],
61 irqs[PUV3_IRQS_GPIOLOW6], irqs[PUV3_IRQS_GPIOLOW7],
62 irqs[PUV3_IRQS_GPIOHIGH], NULL);
64 /* Keyboard (i8042), mouse disabled for nographic */
65 i8042_mm_init(irqs[PUV3_IRQS_PS2_KBD], NULL, i8042, PUV3_REGS_OFFSET, 4);
66 memory_region_add_subregion(get_system_memory(), PUV3_PS2_BASE, i8042);
69 static void puv3_board_init(CPUUniCore32State *env, ram_addr_t ram_size)
71 MemoryRegion *ram_memory = g_new(MemoryRegion, 1);
73 /* SDRAM at address zero. */
74 memory_region_init_ram(ram_memory, "puv3.ram", ram_size);
75 vmstate_register_ram_global(ram_memory);
76 memory_region_add_subregion(get_system_memory(), 0, ram_memory);
79 static void puv3_load_kernel(const char *kernel_filename)
83 assert(kernel_filename != NULL);
85 /* only zImage format supported */
86 size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
89 hw_error("Load kernel error: '%s'\n", kernel_filename);
92 /* cheat curses that we have a graphic console, only under ocd console */
93 graphic_console_init(NULL, NULL, NULL, NULL, NULL);
96 static void puv3_init(QEMUMachineInitArgs *args)
98 ram_addr_t ram_size = args->ram_size;
99 const char *cpu_model = args->cpu_model;
100 const char *kernel_filename = args->kernel_filename;
101 const char *initrd_filename = args->initrd_filename;
102 CPUUniCore32State *env;
104 if (initrd_filename) {
105 hw_error("Please use kernel built-in initramdisk.\n");
109 cpu_model = "UniCore-II";
112 env = cpu_init(cpu_model);
114 hw_error("Unable to find CPU definition\n");
118 puv3_board_init(env, ram_size);
119 puv3_load_kernel(kernel_filename);
122 static QEMUMachine puv3_machine = {
124 .desc = "PKUnity Version-3 based on UniCore32",
129 static void puv3_machine_init(void)
131 qemu_register_machine(&puv3_machine);
134 machine_init(puv3_machine_init)