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/*
* QEMU ETRAX System Emulator
*
* Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "sysbus.h"
#include "boards.h"
#include "sysemu.h"
#include "net.h"
#include "flash.h"
#include "etraxfs.h"
#include "loader.h"
#include "elf.h"
#define FLASH_SIZE 0x2000000
#define INTMEM_SIZE (128 * 1024)
static uint32_t bootstrap_pc;
static void main_cpu_reset(void *opaque)
{
CPUState *env = opaque;
cpu_reset(env);
env->pc = bootstrap_pc;
}
static
void bareetraxfs_init (a_ram_addr ram_size,
const char *boot_device,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
DeviceState *dev;
SysBusDevice *s;
CPUState *env;
qemu_irq irq[30], nmi[2], *cpu_irq;
void *etraxfs_dmac;
struct etraxfs_dma_client *eth[2] = {NULL, NULL};
int kernel_size;
DriveInfo *dinfo;
int i;
a_ram_addr phys_ram;
a_ram_addr phys_flash;
a_ram_addr phys_intmem;
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = "crisv32";
}
env = cpu_init(cpu_model);
qemu_register_reset(main_cpu_reset, env);
/* allocate RAM */
phys_ram = qemu_ram_alloc(ram_size);
cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
/* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
internal memory. */
phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
phys_intmem | IO_MEM_RAM);
phys_flash = qemu_ram_alloc(FLASH_SIZE);
dinfo = drive_get(IF_PFLASH, 0, 0);
pflash_cfi02_register(0x0, phys_flash,
dinfo ? dinfo->bdrv : NULL, (64 * 1024),
FLASH_SIZE >> 16,
1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
0x555, 0x2aa);
cpu_irq = cris_pic_init_cpu(env);
dev = qdev_create(NULL, "etraxfs,pic");
/* FIXME: Is there a proper way to signal vectors to the CPU core? */
qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
qdev_init(dev);
s = sysbus_from_qdev(dev);
sysbus_mmio_map(s, 0, 0x3001c000);
sysbus_connect_irq(s, 0, cpu_irq[0]);
sysbus_connect_irq(s, 1, cpu_irq[1]);
for (i = 0; i < 30; i++) {
irq[i] = qdev_get_gpio_in(dev, i);
}
nmi[0] = qdev_get_gpio_in(dev, 30);
nmi[1] = qdev_get_gpio_in(dev, 31);
etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
for (i = 0; i < 10; i++) {
/* On ETRAX, odd numbered channels are inputs. */
etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
}
/* Add the two ethernet blocks. */
eth[0] = etraxfs_eth_init(&nd_table[0], 0x30034000, 1);
if (nb_nics > 1)
eth[1] = etraxfs_eth_init(&nd_table[1], 0x30036000, 2);
/* The DMA Connector block is missing, hardwire things for now. */
etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
if (eth[1]) {
etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
}
/* 2 timers. */
sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
for (i = 0; i < 4; i++) {
sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
irq[0x14 + i]);
}
if (kernel_filename) {
uint64_t entry, high;
int kcmdline_len;
/* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
devboard SDK. */
kernel_size = load_elf(kernel_filename, -0x80000000LL,
&entry, NULL, &high, 0, ELF_MACHINE, 0);
bootstrap_pc = entry;
if (kernel_size < 0) {
/* Takes a kimage from the axis devboard SDK. */
kernel_size = load_image_targphys(kernel_filename, 0x40004000,
ram_size);
bootstrap_pc = 0x40004000;
env->regs[9] = 0x40004000 + kernel_size;
}
env->regs[8] = 0x56902387; /* RAM init magic. */
if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
if (kcmdline_len > 256) {
fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
exit(1);
}
/* Let the kernel know we are modifying the cmdline. */
env->regs[10] = 0x87109563;
env->regs[11] = 0x40000000;
pstrcpy_targphys(env->regs[11], 256, kernel_cmdline);
}
}
env->pc = bootstrap_pc;
printf ("pc =%x\n", env->pc);
printf ("ram size =%ld\n", ram_size);
}
static QEMUMachine bareetraxfs_machine = {
.name = "bareetraxfs",
.desc = "Bare ETRAX FS board",
.init = bareetraxfs_init,
.is_default = 1,
};
static void bareetraxfs_machine_init(void)
{
qemu_register_machine(&bareetraxfs_machine);
}
machine_init(bareetraxfs_machine_init);
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