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/*
* Xilinx Zynq Baseboard System emulation.
*
* Copyright (c) 2010 Xilinx.
* Copyright (c) 2012 Peter A.G. Crosthwaite (peter.croshtwaite@petalogix.com)
* Copyright (c) 2012 Petalogix Pty Ltd.
* Written by Haibing Ma
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "sysbus.h"
#include "arm-misc.h"
#include "net.h"
#include "exec-memory.h"
#include "sysemu.h"
#include "boards.h"
#include "flash.h"
#include "blockdev.h"
#include "loader.h"
#include "ssi.h"
#define NUM_SPI_FLASHES 4
#define FLASH_SIZE (64 * 1024 * 1024)
#define FLASH_SECTOR_SIZE (128 * 1024)
#define IRQ_OFFSET 32 /* pic interrupts start from index 32 */
static struct arm_boot_info zynq_binfo = {};
static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq)
{
DeviceState *dev;
SysBusDevice *s;
qemu_check_nic_model(nd, "cadence_gem");
dev = qdev_create(NULL, "cadence_gem");
qdev_set_nic_properties(dev, nd);
qdev_init_nofail(dev);
s = sysbus_from_qdev(dev);
sysbus_mmio_map(s, 0, base);
sysbus_connect_irq(s, 0, irq);
}
static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq)
{
DeviceState *dev;
SysBusDevice *busdev;
SSIBus *spi;
int i;
dev = qdev_create(NULL, "xilinx,spips");
qdev_init_nofail(dev);
busdev = sysbus_from_qdev(dev);
sysbus_mmio_map(busdev, 0, base_addr);
sysbus_connect_irq(busdev, 0, irq);
spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
for (i = 0; i < NUM_SPI_FLASHES; ++i) {
qemu_irq cs_line;
dev = ssi_create_slave_no_init(spi, "m25p80");
qdev_prop_set_string(dev, "partname", "n25q128");
qdev_init_nofail(dev);
cs_line = qdev_get_gpio_in(dev, 0);
sysbus_connect_irq(busdev, i+1, cs_line);
}
}
static void zynq_init(QEMUMachineInitArgs *args)
{
ram_addr_t ram_size = args->ram_size;
const char *cpu_model = args->cpu_model;
const char *kernel_filename = args->kernel_filename;
const char *kernel_cmdline = args->kernel_cmdline;
const char *initrd_filename = args->initrd_filename;
ARMCPU *cpu;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
MemoryRegion *ocm_ram = g_new(MemoryRegion, 1);
DeviceState *dev;
SysBusDevice *busdev;
qemu_irq *irqp;
qemu_irq pic[64];
NICInfo *nd;
int n;
qemu_irq cpu_irq;
if (!cpu_model) {
cpu_model = "cortex-a9";
}
cpu = cpu_arm_init(cpu_model);
if (!cpu) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
irqp = arm_pic_init_cpu(cpu);
cpu_irq = irqp[ARM_PIC_CPU_IRQ];
/* max 2GB ram */
if (ram_size > 0x80000000) {
ram_size = 0x80000000;
}
/* DDR remapped to address zero. */
memory_region_init_ram(ext_ram, "zynq.ext_ram", ram_size);
vmstate_register_ram_global(ext_ram);
memory_region_add_subregion(address_space_mem, 0, ext_ram);
/* 256K of on-chip memory */
memory_region_init_ram(ocm_ram, "zynq.ocm_ram", 256 << 10);
vmstate_register_ram_global(ocm_ram);
memory_region_add_subregion(address_space_mem, 0xFFFC0000, ocm_ram);
DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);
/* AMD */
pflash_cfi02_register(0xe2000000, NULL, "zynq.pflash", FLASH_SIZE,
dinfo ? dinfo->bdrv : NULL, FLASH_SECTOR_SIZE,
FLASH_SIZE/FLASH_SECTOR_SIZE, 1,
1, 0x0066, 0x0022, 0x0000, 0x0000, 0x0555, 0x2aa,
0);
dev = qdev_create(NULL, "xilinx,zynq_slcr");
qdev_init_nofail(dev);
sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xF8000000);
dev = qdev_create(NULL, "a9mpcore_priv");
qdev_prop_set_uint32(dev, "num-cpu", 1);
qdev_init_nofail(dev);
busdev = sysbus_from_qdev(dev);
sysbus_mmio_map(busdev, 0, 0xF8F00000);
sysbus_connect_irq(busdev, 0, cpu_irq);
for (n = 0; n < 64; n++) {
pic[n] = qdev_get_gpio_in(dev, n);
}
zynq_init_spi_flashes(0xE0006000, pic[58-IRQ_OFFSET]);
zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET]);
sysbus_create_simple("cadence_uart", 0xE0000000, pic[59-IRQ_OFFSET]);
sysbus_create_simple("cadence_uart", 0xE0001000, pic[82-IRQ_OFFSET]);
sysbus_create_varargs("cadence_ttc", 0xF8001000,
pic[42-IRQ_OFFSET], pic[43-IRQ_OFFSET], pic[44-IRQ_OFFSET], NULL);
sysbus_create_varargs("cadence_ttc", 0xF8002000,
pic[69-IRQ_OFFSET], pic[70-IRQ_OFFSET], pic[71-IRQ_OFFSET], NULL);
for (n = 0; n < nb_nics; n++) {
nd = &nd_table[n];
if (n == 0) {
gem_init(nd, 0xE000B000, pic[54-IRQ_OFFSET]);
} else if (n == 1) {
gem_init(nd, 0xE000C000, pic[77-IRQ_OFFSET]);
}
}
zynq_binfo.ram_size = ram_size;
zynq_binfo.kernel_filename = kernel_filename;
zynq_binfo.kernel_cmdline = kernel_cmdline;
zynq_binfo.initrd_filename = initrd_filename;
zynq_binfo.nb_cpus = 1;
zynq_binfo.board_id = 0xd32;
zynq_binfo.loader_start = 0;
arm_load_kernel(arm_env_get_cpu(first_cpu), &zynq_binfo);
}
static QEMUMachine zynq_machine = {
.name = "xilinx-zynq-a9",
.desc = "Xilinx Zynq Platform Baseboard for Cortex-A9",
.init = zynq_init,
.use_scsi = 1,
.max_cpus = 1,
.no_sdcard = 1
};
static void zynq_machine_init(void)
{
qemu_register_machine(&zynq_machine);
}
machine_init(zynq_machine_init);
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