diff options
Diffstat (limited to 'hw/puv3.c')
| -rw-r--r-- | hw/puv3.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/hw/puv3.c b/hw/puv3.c new file mode 100644 index 0000000000..43f7216e4e --- /dev/null +++ b/hw/puv3.c @@ -0,0 +1,131 @@ +/* + * 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 "console.h" +#include "elf.h" +#include "exec-memory.h" +#include "sysbus.h" +#include "boards.h" +#include "loader.h" +#include "pc.h" + +#undef DEBUG_PUV3 +#include "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) +{ + CPUUniCore32State *env = opaque; + + assert(irq == 0); + if (level) { + cpu_interrupt(env, CPU_INTERRUPT_HARD); + } else { + cpu_reset_interrupt(env, 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, 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 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(NULL, NULL, NULL, NULL, NULL); +} + +static void puv3_init(ram_addr_t ram_size, const char *boot_device, + const char *kernel_filename, const char *kernel_cmdline, + const char *initrd_filename, const char *cpu_model) +{ + 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, + .use_scsi = 0, +}; + +static void puv3_machine_init(void) +{ + qemu_register_machine(&puv3_machine); +} + +machine_init(puv3_machine_init) |