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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 "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;
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_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);
}
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,
.use_scsi = 0,
};
static void puv3_machine_init(void)
{
qemu_register_machine(&puv3_machine);
}
machine_init(puv3_machine_init)
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