342 lines
10 KiB
C
342 lines
10 KiB
C
/*
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* Calxeda Highbank SoC emulation
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*
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* Copyright (c) 2010-2012 Calxeda
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "sysbus.h"
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#include "arm-misc.h"
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#include "devices.h"
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#include "loader.h"
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#include "net.h"
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#include "sysemu.h"
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#include "boards.h"
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#include "sysbus.h"
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#include "blockdev.h"
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#include "exec-memory.h"
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#define SMP_BOOT_ADDR 0x100
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#define SMP_BOOT_REG 0x40
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#define GIC_BASE_ADDR 0xfff10000
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#define NIRQ_GIC 160
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/* Board init. */
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static void hb_write_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
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{
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int n;
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uint32_t smpboot[] = {
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0xee100fb0, /* mrc p15, 0, r0, c0, c0, 5 - read current core id */
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0xe210000f, /* ands r0, r0, #0x0f */
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0xe3a03040, /* mov r3, #0x40 - jump address is 0x40 + 0x10 * core id */
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0xe0830200, /* add r0, r3, r0, lsl #4 */
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0xe59f2024, /* ldr r2, privbase */
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0xe3a01001, /* mov r1, #1 */
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0xe5821100, /* str r1, [r2, #256] - set GICC_CTLR.Enable */
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0xe3a010ff, /* mov r1, #0xff */
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0xe5821104, /* str r1, [r2, #260] - set GICC_PMR.Priority to 0xff */
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0xf57ff04f, /* dsb */
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0xe320f003, /* wfi */
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0xe5901000, /* ldr r1, [r0] */
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0xe1110001, /* tst r1, r1 */
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0x0afffffb, /* beq <wfi> */
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0xe12fff11, /* bx r1 */
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GIC_BASE_ADDR /* privbase: gic address. */
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};
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for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
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smpboot[n] = tswap32(smpboot[n]);
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}
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rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), SMP_BOOT_ADDR);
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}
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static void hb_reset_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
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{
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CPUARMState *env = &cpu->env;
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switch (info->nb_cpus) {
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case 4:
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stl_phys_notdirty(SMP_BOOT_REG + 0x30, 0);
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case 3:
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stl_phys_notdirty(SMP_BOOT_REG + 0x20, 0);
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case 2:
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stl_phys_notdirty(SMP_BOOT_REG + 0x10, 0);
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env->regs[15] = SMP_BOOT_ADDR;
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break;
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default:
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break;
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}
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}
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#define NUM_REGS 0x200
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static void hb_regs_write(void *opaque, hwaddr offset,
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uint64_t value, unsigned size)
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{
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uint32_t *regs = opaque;
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if (offset == 0xf00) {
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if (value == 1 || value == 2) {
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qemu_system_reset_request();
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} else if (value == 3) {
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qemu_system_shutdown_request();
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}
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}
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regs[offset/4] = value;
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}
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static uint64_t hb_regs_read(void *opaque, hwaddr offset,
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unsigned size)
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{
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uint32_t *regs = opaque;
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uint32_t value = regs[offset/4];
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if ((offset == 0x100) || (offset == 0x108) || (offset == 0x10C)) {
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value |= 0x30000000;
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}
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return value;
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}
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static const MemoryRegionOps hb_mem_ops = {
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.read = hb_regs_read,
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.write = hb_regs_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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};
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typedef struct {
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SysBusDevice busdev;
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MemoryRegion *iomem;
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uint32_t regs[NUM_REGS];
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} HighbankRegsState;
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static VMStateDescription vmstate_highbank_regs = {
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.name = "highbank-regs",
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.version_id = 0,
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.minimum_version_id = 0,
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.minimum_version_id_old = 0,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32_ARRAY(regs, HighbankRegsState, NUM_REGS),
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VMSTATE_END_OF_LIST(),
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},
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};
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static void highbank_regs_reset(DeviceState *dev)
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{
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SysBusDevice *sys_dev = sysbus_from_qdev(dev);
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HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, sys_dev);
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s->regs[0x40] = 0x05F20121;
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s->regs[0x41] = 0x2;
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s->regs[0x42] = 0x05F30121;
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s->regs[0x43] = 0x05F40121;
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}
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static int highbank_regs_init(SysBusDevice *dev)
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{
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HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, dev);
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s->iomem = g_new(MemoryRegion, 1);
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memory_region_init_io(s->iomem, &hb_mem_ops, s->regs, "highbank_regs",
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0x1000);
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sysbus_init_mmio(dev, s->iomem);
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return 0;
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}
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static void highbank_regs_class_init(ObjectClass *klass, void *data)
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{
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SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
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DeviceClass *dc = DEVICE_CLASS(klass);
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sbc->init = highbank_regs_init;
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dc->desc = "Calxeda Highbank registers";
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dc->vmsd = &vmstate_highbank_regs;
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dc->reset = highbank_regs_reset;
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}
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static TypeInfo highbank_regs_info = {
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.name = "highbank-regs",
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(HighbankRegsState),
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.class_init = highbank_regs_class_init,
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};
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static void highbank_regs_register_types(void)
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{
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type_register_static(&highbank_regs_info);
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}
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type_init(highbank_regs_register_types)
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static struct arm_boot_info highbank_binfo;
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/* ram_size must be set to match the upper bound of memory in the
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* device tree (linux/arch/arm/boot/dts/highbank.dts), which is
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* normally 0xff900000 or -m 4089. When running this board on a
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* 32-bit host, set the reg value of memory to 0xf7ff00000 in the
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* device tree and pass -m 2047 to QEMU.
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*/
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static void highbank_init(QEMUMachineInitArgs *args)
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{
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ram_addr_t ram_size = args->ram_size;
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const char *cpu_model = args->cpu_model;
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const char *kernel_filename = args->kernel_filename;
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const char *kernel_cmdline = args->kernel_cmdline;
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const char *initrd_filename = args->initrd_filename;
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DeviceState *dev;
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SysBusDevice *busdev;
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qemu_irq *irqp;
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qemu_irq pic[128];
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int n;
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qemu_irq cpu_irq[4];
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MemoryRegion *sysram;
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MemoryRegion *dram;
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MemoryRegion *sysmem;
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char *sysboot_filename;
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if (!cpu_model) {
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cpu_model = "cortex-a9";
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}
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for (n = 0; n < smp_cpus; n++) {
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ARMCPU *cpu;
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cpu = cpu_arm_init(cpu_model);
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if (cpu == NULL) {
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fprintf(stderr, "Unable to find CPU definition\n");
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exit(1);
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}
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/* This will become a QOM property eventually */
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cpu->reset_cbar = GIC_BASE_ADDR;
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irqp = arm_pic_init_cpu(cpu);
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cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
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}
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sysmem = get_system_memory();
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dram = g_new(MemoryRegion, 1);
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memory_region_init_ram(dram, "highbank.dram", ram_size);
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/* SDRAM at address zero. */
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memory_region_add_subregion(sysmem, 0, dram);
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sysram = g_new(MemoryRegion, 1);
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memory_region_init_ram(sysram, "highbank.sysram", 0x8000);
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memory_region_add_subregion(sysmem, 0xfff88000, sysram);
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if (bios_name != NULL) {
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sysboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
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if (sysboot_filename != NULL) {
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uint32_t filesize = get_image_size(sysboot_filename);
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if (load_image_targphys("sysram.bin", 0xfff88000, filesize) < 0) {
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hw_error("Unable to load %s\n", bios_name);
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}
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} else {
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hw_error("Unable to find %s\n", bios_name);
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}
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}
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dev = qdev_create(NULL, "a9mpcore_priv");
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qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
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qdev_prop_set_uint32(dev, "num-irq", NIRQ_GIC);
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qdev_init_nofail(dev);
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busdev = sysbus_from_qdev(dev);
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sysbus_mmio_map(busdev, 0, GIC_BASE_ADDR);
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for (n = 0; n < smp_cpus; n++) {
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sysbus_connect_irq(busdev, n, cpu_irq[n]);
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}
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for (n = 0; n < 128; n++) {
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pic[n] = qdev_get_gpio_in(dev, n);
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}
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dev = qdev_create(NULL, "l2x0");
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qdev_init_nofail(dev);
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busdev = sysbus_from_qdev(dev);
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sysbus_mmio_map(busdev, 0, 0xfff12000);
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dev = qdev_create(NULL, "sp804");
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qdev_prop_set_uint32(dev, "freq0", 150000000);
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qdev_prop_set_uint32(dev, "freq1", 150000000);
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qdev_init_nofail(dev);
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busdev = sysbus_from_qdev(dev);
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sysbus_mmio_map(busdev, 0, 0xfff34000);
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sysbus_connect_irq(busdev, 0, pic[18]);
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sysbus_create_simple("pl011", 0xfff36000, pic[20]);
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dev = qdev_create(NULL, "highbank-regs");
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qdev_init_nofail(dev);
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busdev = sysbus_from_qdev(dev);
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sysbus_mmio_map(busdev, 0, 0xfff3c000);
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sysbus_create_simple("pl061", 0xfff30000, pic[14]);
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sysbus_create_simple("pl061", 0xfff31000, pic[15]);
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sysbus_create_simple("pl061", 0xfff32000, pic[16]);
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sysbus_create_simple("pl061", 0xfff33000, pic[17]);
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sysbus_create_simple("pl031", 0xfff35000, pic[19]);
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sysbus_create_simple("pl022", 0xfff39000, pic[23]);
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sysbus_create_simple("sysbus-ahci", 0xffe08000, pic[83]);
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if (nd_table[0].used) {
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qemu_check_nic_model(&nd_table[0], "xgmac");
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dev = qdev_create(NULL, "xgmac");
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qdev_set_nic_properties(dev, &nd_table[0]);
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qdev_init_nofail(dev);
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sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff50000);
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sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[77]);
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sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[78]);
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sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[79]);
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qemu_check_nic_model(&nd_table[1], "xgmac");
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dev = qdev_create(NULL, "xgmac");
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qdev_set_nic_properties(dev, &nd_table[1]);
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qdev_init_nofail(dev);
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sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff51000);
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sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[80]);
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sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[81]);
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sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[82]);
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}
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highbank_binfo.ram_size = ram_size;
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highbank_binfo.kernel_filename = kernel_filename;
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highbank_binfo.kernel_cmdline = kernel_cmdline;
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highbank_binfo.initrd_filename = initrd_filename;
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/* highbank requires a dtb in order to boot, and the dtb will override
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* the board ID. The following value is ignored, so set it to -1 to be
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* clear that the value is meaningless.
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*/
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highbank_binfo.board_id = -1;
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highbank_binfo.nb_cpus = smp_cpus;
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highbank_binfo.loader_start = 0;
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highbank_binfo.write_secondary_boot = hb_write_secondary;
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highbank_binfo.secondary_cpu_reset_hook = hb_reset_secondary;
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arm_load_kernel(arm_env_get_cpu(first_cpu), &highbank_binfo);
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}
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static QEMUMachine highbank_machine = {
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.name = "highbank",
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.desc = "Calxeda Highbank (ECX-1000)",
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.init = highbank_init,
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.block_default_type = IF_SCSI,
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.max_cpus = 4,
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};
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static void highbank_machine_init(void)
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{
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qemu_register_machine(&highbank_machine);
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}
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machine_init(highbank_machine_init);
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