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/*
* 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/osdep.h"
#include "qapi/error.h"
#include "cpu.h"
#include "ui/console.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "sysemu/qtest.h"
#undef DEBUG_PUV3
#include "hw/unicore32/puv3.h"
#include "hw/input/i8042.h"
#include "hw/irq.h"
#define KERNEL_LOAD_ADDR 0x03000000
#define KERNEL_MAX_SIZE 0x00800000 /* Just a guess */
/* PKUnity System bus (AHB): 0xc0000000 - 0xedffffff (640MB) */
#define PUV3_DMA_BASE (0xc0200000) /* AHB-4 */
/* PKUnity Peripheral bus (APB): 0xee000000 - 0xefffffff (128MB) */
#define PUV3_GPIO_BASE (0xee500000) /* APB-5 */
#define PUV3_INTC_BASE (0xee600000) /* APB-6 */
#define PUV3_OST_BASE (0xee800000) /* APB-8 */
#define PUV3_PM_BASE (0xeea00000) /* APB-10 */
#define PUV3_PS2_BASE (0xeeb00000) /* APB-11 */
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,
env_archcpu(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_fatal);
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;
}
if (kernel_filename == NULL) {
error_report("kernel parameter cannot be empty");
exit(1);
}
/* only zImage format supported */
size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
KERNEL_MAX_SIZE);
if (size < 0) {
error_report("Load kernel error: '%s'", kernel_filename);
exit(1);
}
/* 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 *kernel_filename = machine->kernel_filename;
const char *initrd_filename = machine->initrd_filename;
CPUUniCore32State *env;
UniCore32CPU *cpu;
if (initrd_filename) {
error_report("Please use kernel built-in initramdisk");
exit(1);
}
cpu = UNICORE32_CPU(cpu_create(machine->cpu_type));
env = &cpu->env;
puv3_soc_init(env);
puv3_board_init(env, ram_size);
puv3_load_kernel(kernel_filename);
}
static void puv3_machine_init(MachineClass *mc)
{
mc->desc = "PKUnity Version-3 based on UniCore32";
mc->init = puv3_init;
mc->is_default = true;
mc->default_cpu_type = UNICORE32_CPU_TYPE_NAME("UniCore-II");
}
DEFINE_MACHINE("puv3", puv3_machine_init)
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