diff options
Diffstat (limited to 'hw/unicore32')
| -rw-r--r-- | hw/unicore32/Makefile.objs | 4 | ||||
| -rw-r--r-- | hw/unicore32/puv3.c | 145 |
2 files changed, 149 insertions, 0 deletions
diff --git a/hw/unicore32/Makefile.objs b/hw/unicore32/Makefile.objs new file mode 100644 index 00000000..e0fd6285 --- /dev/null +++ b/hw/unicore32/Makefile.objs @@ -0,0 +1,4 @@ +# For UniCore32 machines and boards + +# PKUnity-v3 SoC and board information +obj-${CONFIG_PUV3} += puv3.o diff --git a/hw/unicore32/puv3.c b/hw/unicore32/puv3.c new file mode 100644 index 00000000..703e29d6 --- /dev/null +++ b/hw/unicore32/puv3.c @@ -0,0 +1,145 @@ +/* + * 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" +#include "sysemu/qtest.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_irq(puv3_intc_cpu_handler, + uc32_env_get_cpu(env), 0); + 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, NULL, "puv3.ram", ram_size, + &error_abort); + 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; + + if (kernel_filename == NULL && qtest_enabled()) { + return; + } + 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, 0, &no_ops, NULL); +} + +static void puv3_init(MachineState *machine) +{ + ram_addr_t ram_size = machine->ram_size; + const char *cpu_model = machine->cpu_model; + const char *kernel_filename = machine->kernel_filename; + const char *initrd_filename = machine->initrd_filename; + CPUUniCore32State *env; + UniCore32CPU *cpu; + + if (initrd_filename) { + hw_error("Please use kernel built-in initramdisk.\n"); + } + + if (!cpu_model) { + cpu_model = "UniCore-II"; + } + + cpu = uc32_cpu_init(cpu_model); + if (!cpu) { + hw_error("Unable to find CPU definition\n"); + } + env = &cpu->env; + + 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, +}; + +static void puv3_machine_init(void) +{ + qemu_register_machine(&puv3_machine); +} + +machine_init(puv3_machine_init) |