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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 "hw/sysbus.h"
#include "hw/arm/arm.h"
#include "net/net.h"
#include "exec/address-spaces.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "hw/block/flash.h"
#include "sysemu/block-backend.h"
#include "hw/loader.h"
#include "hw/ssi.h"
#include "qemu/error-report.h"
#define NUM_SPI_FLASHES 4
#define NUM_QSPI_FLASHES 2
#define NUM_QSPI_BUSSES 2
#define FLASH_SIZE (64 * 1024 * 1024)
#define FLASH_SECTOR_SIZE (128 * 1024)
#define IRQ_OFFSET 32 /* pic interrupts start from index 32 */
#define MPCORE_PERIPHBASE 0xF8F00000
#define ZYNQ_BOARD_MIDR 0x413FC090
static const int dma_irqs[8] = {
46, 47, 48, 49, 72, 73, 74, 75
};
static struct arm_boot_info zynq_binfo = {};
static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq)
{
DeviceState *dev;
SysBusDevice *s;
dev = qdev_create(NULL, "cadence_gem");
if (nd->used) {
qemu_check_nic_model(nd, "cadence_gem");
qdev_set_nic_properties(dev, nd);
}
qdev_init_nofail(dev);
s = SYS_BUS_DEVICE(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,
bool is_qspi)
{
DeviceState *dev;
SysBusDevice *busdev;
SSIBus *spi;
DeviceState *flash_dev;
int i, j;
int num_busses = is_qspi ? NUM_QSPI_BUSSES : 1;
int num_ss = is_qspi ? NUM_QSPI_FLASHES : NUM_SPI_FLASHES;
dev = qdev_create(NULL, is_qspi ? "xlnx.ps7-qspi" : "xlnx.ps7-spi");
qdev_prop_set_uint8(dev, "num-txrx-bytes", is_qspi ? 4 : 1);
qdev_prop_set_uint8(dev, "num-ss-bits", num_ss);
qdev_prop_set_uint8(dev, "num-busses", num_busses);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, base_addr);
if (is_qspi) {
sysbus_mmio_map(busdev, 1, 0xFC000000);
}
sysbus_connect_irq(busdev, 0, irq);
for (i = 0; i < num_busses; ++i) {
char bus_name[16];
qemu_irq cs_line;
snprintf(bus_name, 16, "spi%d", i);
spi = (SSIBus *)qdev_get_child_bus(dev, bus_name);
for (j = 0; j < num_ss; ++j) {
flash_dev = ssi_create_slave(spi, "n25q128");
cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0);
sysbus_connect_irq(busdev, i * num_ss + j + 1, cs_line);
}
}
}
static void zynq_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 *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
ObjectClass *cpu_oc;
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 pic[64];
Error *err = NULL;
int n;
if (!cpu_model) {
cpu_model = "cortex-a9";
}
cpu_oc = cpu_class_by_name(TYPE_ARM_CPU, cpu_model);
cpu = ARM_CPU(object_new(object_class_get_name(cpu_oc)));
/* By default A9 CPUs have EL3 enabled. This board does not
* currently support EL3 so the CPU EL3 property is disabled before
* realization.
*/
if (object_property_find(OBJECT(cpu), "has_el3", NULL)) {
object_property_set_bool(OBJECT(cpu), false, "has_el3", &err);
if (err) {
error_report_err(err);
exit(1);
}
}
object_property_set_int(OBJECT(cpu), ZYNQ_BOARD_MIDR, "midr", &err);
if (err) {
error_report_err(err);
exit(1);
}
object_property_set_int(OBJECT(cpu), MPCORE_PERIPHBASE, "reset-cbar", &err);
if (err) {
error_report_err(err);
exit(1);
}
object_property_set_bool(OBJECT(cpu), true, "realized", &err);
if (err) {
error_report_err(err);
exit(1);
}
/* max 2GB ram */
if (ram_size > 0x80000000) {
ram_size = 0x80000000;
}
/* DDR remapped to address zero. */
memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
ram_size);
memory_region_add_subregion(address_space_mem, 0, ext_ram);
/* 256K of on-chip memory */
memory_region_init_ram(ocm_ram, NULL, "zynq.ocm_ram", 256 << 10,
&error_fatal);
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 ? blk_by_legacy_dinfo(dinfo) : 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(SYS_BUS_DEVICE(dev), 0, 0xF8000000);
dev = qdev_create(NULL, "a9mpcore_priv");
qdev_prop_set_uint32(dev, "num-cpu", 1);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, MPCORE_PERIPHBASE);
sysbus_connect_irq(busdev, 0,
qdev_get_gpio_in(DEVICE(cpu), ARM_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], false);
zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET], false);
zynq_init_spi_flashes(0xE000D000, pic[51-IRQ_OFFSET], true);
sysbus_create_simple("xlnx,ps7-usb", 0xE0002000, pic[53-IRQ_OFFSET]);
sysbus_create_simple("xlnx,ps7-usb", 0xE0003000, pic[76-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);
gem_init(&nd_table[0], 0xE000B000, pic[54-IRQ_OFFSET]);
gem_init(&nd_table[1], 0xE000C000, pic[77-IRQ_OFFSET]);
dev = qdev_create(NULL, "generic-sdhci");
qdev_init_nofail(dev);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xE0100000);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[56-IRQ_OFFSET]);
dev = qdev_create(NULL, "generic-sdhci");
qdev_init_nofail(dev);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0xE0101000);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[79-IRQ_OFFSET]);
dev = qdev_create(NULL, "pl330");
qdev_prop_set_uint8(dev, "num_chnls", 8);
qdev_prop_set_uint8(dev, "num_periph_req", 4);
qdev_prop_set_uint8(dev, "num_events", 16);
qdev_prop_set_uint8(dev, "data_width", 64);
qdev_prop_set_uint8(dev, "wr_cap", 8);
qdev_prop_set_uint8(dev, "wr_q_dep", 16);
qdev_prop_set_uint8(dev, "rd_cap", 8);
qdev_prop_set_uint8(dev, "rd_q_dep", 16);
qdev_prop_set_uint16(dev, "data_buffer_dep", 256);
qdev_init_nofail(dev);
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, 0xF8003000);
sysbus_connect_irq(busdev, 0, pic[45-IRQ_OFFSET]); /* abort irq line */
for (n = 0; n < 8; ++n) { /* event irqs */
sysbus_connect_irq(busdev, n + 1, pic[dma_irqs[n] - 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_CPU(first_cpu), &zynq_binfo);
}
static QEMUMachine zynq_machine = {
.name = "xilinx-zynq-a9",
.desc = "Xilinx Zynq Platform Baseboard for Cortex-A9",
.init = zynq_init,
.block_default_type = IF_SCSI,
.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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