/* * Calxeda Highbank SoC emulation * * Copyright (c) 2010-2012 Calxeda * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2 or later, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * 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 "devices.h" #include "loader.h" #include "net.h" #include "sysemu.h" #include "boards.h" #include "sysbus.h" #include "blockdev.h" #include "exec-memory.h" #define SMP_BOOT_ADDR 0x100 #define SMP_BOOT_REG 0x40 #define GIC_BASE_ADDR 0xfff10000 #define NIRQ_GIC 160 /* Board init. */ static void hb_write_secondary(ARMCPU *cpu, const struct arm_boot_info *info) { int n; uint32_t smpboot[] = { 0xee100fb0, /* mrc p15, 0, r0, c0, c0, 5 - read current core id */ 0xe210000f, /* ands r0, r0, #0x0f */ 0xe3a03040, /* mov r3, #0x40 - jump address is 0x40 + 0x10 * core id */ 0xe0830200, /* add r0, r3, r0, lsl #4 */ 0xe59f2018, /* ldr r2, privbase */ 0xe3a01001, /* mov r1, #1 */ 0xe5821100, /* str r1, [r2, #256] */ 0xe320f003, /* wfi */ 0xe5901000, /* ldr r1, [r0] */ 0xe1110001, /* tst r1, r1 */ 0x0afffffb, /* beq <wfi> */ 0xe12fff11, /* bx r1 */ GIC_BASE_ADDR /* privbase: gic address. */ }; for (n = 0; n < ARRAY_SIZE(smpboot); n++) { smpboot[n] = tswap32(smpboot[n]); } rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), SMP_BOOT_ADDR); } static void hb_reset_secondary(ARMCPU *cpu, const struct arm_boot_info *info) { CPUARMState *env = &cpu->env; switch (info->nb_cpus) { case 4: stl_phys_notdirty(SMP_BOOT_REG + 0x30, 0); case 3: stl_phys_notdirty(SMP_BOOT_REG + 0x20, 0); case 2: stl_phys_notdirty(SMP_BOOT_REG + 0x10, 0); env->regs[15] = SMP_BOOT_ADDR; break; default: break; } } #define NUM_REGS 0x200 static void hb_regs_write(void *opaque, target_phys_addr_t offset, uint64_t value, unsigned size) { uint32_t *regs = opaque; if (offset == 0xf00) { if (value == 1 || value == 2) { qemu_system_reset_request(); } else if (value == 3) { qemu_system_shutdown_request(); } } regs[offset/4] = value; } static uint64_t hb_regs_read(void *opaque, target_phys_addr_t offset, unsigned size) { uint32_t *regs = opaque; uint32_t value = regs[offset/4]; if ((offset == 0x100) || (offset == 0x108) || (offset == 0x10C)) { value |= 0x30000000; } return value; } static const MemoryRegionOps hb_mem_ops = { .read = hb_regs_read, .write = hb_regs_write, .endianness = DEVICE_NATIVE_ENDIAN, }; typedef struct { SysBusDevice busdev; MemoryRegion *iomem; uint32_t regs[NUM_REGS]; } HighbankRegsState; static VMStateDescription vmstate_highbank_regs = { .name = "highbank-regs", .version_id = 0, .minimum_version_id = 0, .minimum_version_id_old = 0, .fields = (VMStateField[]) { VMSTATE_UINT32_ARRAY(regs, HighbankRegsState, NUM_REGS), VMSTATE_END_OF_LIST(), }, }; static void highbank_regs_reset(DeviceState *dev) { SysBusDevice *sys_dev = sysbus_from_qdev(dev); HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, sys_dev); s->regs[0x40] = 0x05F20121; s->regs[0x41] = 0x2; s->regs[0x42] = 0x05F30121; s->regs[0x43] = 0x05F40121; } static int highbank_regs_init(SysBusDevice *dev) { HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, dev); s->iomem = g_new(MemoryRegion, 1); memory_region_init_io(s->iomem, &hb_mem_ops, s->regs, "highbank_regs", 0x1000); sysbus_init_mmio(dev, s->iomem); return 0; } static void highbank_regs_class_init(ObjectClass *klass, void *data) { SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass); DeviceClass *dc = DEVICE_CLASS(klass); sbc->init = highbank_regs_init; dc->desc = "Calxeda Highbank registers"; dc->vmsd = &vmstate_highbank_regs; dc->reset = highbank_regs_reset; } static TypeInfo highbank_regs_info = { .name = "highbank-regs", .parent = TYPE_SYS_BUS_DEVICE, .instance_size = sizeof(HighbankRegsState), .class_init = highbank_regs_class_init, }; static void highbank_regs_register_types(void) { type_register_static(&highbank_regs_info); } type_init(highbank_regs_register_types) static struct arm_boot_info highbank_binfo; /* ram_size must be set to match the upper bound of memory in the * device tree (linux/arch/arm/boot/dts/highbank.dts), which is * normally 0xff900000 or -m 4089. When running this board on a * 32-bit host, set the reg value of memory to 0xf7ff00000 in the * device tree and pass -m 2047 to QEMU. */ static void highbank_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) { DeviceState *dev; SysBusDevice *busdev; qemu_irq *irqp; qemu_irq pic[128]; int n; qemu_irq cpu_irq[4]; MemoryRegion *sysram; MemoryRegion *dram; MemoryRegion *sysmem; char *sysboot_filename; if (!cpu_model) { cpu_model = "cortex-a9"; } for (n = 0; n < smp_cpus; n++) { ARMCPU *cpu; cpu = cpu_arm_init(cpu_model); if (cpu == NULL) { fprintf(stderr, "Unable to find CPU definition\n"); exit(1); } /* This will become a QOM property eventually */ cpu->reset_cbar = GIC_BASE_ADDR; irqp = arm_pic_init_cpu(cpu); cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ]; } sysmem = get_system_memory(); dram = g_new(MemoryRegion, 1); memory_region_init_ram(dram, "highbank.dram", ram_size); /* SDRAM at address zero. */ memory_region_add_subregion(sysmem, 0, dram); sysram = g_new(MemoryRegion, 1); memory_region_init_ram(sysram, "highbank.sysram", 0x8000); memory_region_add_subregion(sysmem, 0xfff88000, sysram); if (bios_name != NULL) { sysboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); if (sysboot_filename != NULL) { uint32_t filesize = get_image_size(sysboot_filename); if (load_image_targphys("sysram.bin", 0xfff88000, filesize) < 0) { hw_error("Unable to load %s\n", bios_name); } } else { hw_error("Unable to find %s\n", bios_name); } } dev = qdev_create(NULL, "a9mpcore_priv"); qdev_prop_set_uint32(dev, "num-cpu", smp_cpus); qdev_prop_set_uint32(dev, "num-irq", NIRQ_GIC); qdev_init_nofail(dev); busdev = sysbus_from_qdev(dev); sysbus_mmio_map(busdev, 0, GIC_BASE_ADDR); for (n = 0; n < smp_cpus; n++) { sysbus_connect_irq(busdev, n, cpu_irq[n]); } for (n = 0; n < 128; n++) { pic[n] = qdev_get_gpio_in(dev, n); } dev = qdev_create(NULL, "l2x0"); qdev_init_nofail(dev); busdev = sysbus_from_qdev(dev); sysbus_mmio_map(busdev, 0, 0xfff12000); dev = qdev_create(NULL, "sp804"); qdev_prop_set_uint32(dev, "freq0", 150000000); qdev_prop_set_uint32(dev, "freq1", 150000000); qdev_init_nofail(dev); busdev = sysbus_from_qdev(dev); sysbus_mmio_map(busdev, 0, 0xfff34000); sysbus_connect_irq(busdev, 0, pic[18]); sysbus_create_simple("pl011", 0xfff36000, pic[20]); dev = qdev_create(NULL, "highbank-regs"); qdev_init_nofail(dev); busdev = sysbus_from_qdev(dev); sysbus_mmio_map(busdev, 0, 0xfff3c000); sysbus_create_simple("pl061", 0xfff30000, pic[14]); sysbus_create_simple("pl061", 0xfff31000, pic[15]); sysbus_create_simple("pl061", 0xfff32000, pic[16]); sysbus_create_simple("pl061", 0xfff33000, pic[17]); sysbus_create_simple("pl031", 0xfff35000, pic[19]); sysbus_create_simple("pl022", 0xfff39000, pic[23]); sysbus_create_simple("sysbus-ahci", 0xffe08000, pic[83]); if (nd_table[0].used) { qemu_check_nic_model(&nd_table[0], "xgmac"); dev = qdev_create(NULL, "xgmac"); qdev_set_nic_properties(dev, &nd_table[0]); qdev_init_nofail(dev); sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff50000); sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[77]); sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[78]); sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[79]); qemu_check_nic_model(&nd_table[1], "xgmac"); dev = qdev_create(NULL, "xgmac"); qdev_set_nic_properties(dev, &nd_table[1]); qdev_init_nofail(dev); sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff51000); sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[80]); sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[81]); sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[82]); } highbank_binfo.ram_size = ram_size; highbank_binfo.kernel_filename = kernel_filename; highbank_binfo.kernel_cmdline = kernel_cmdline; highbank_binfo.initrd_filename = initrd_filename; /* highbank requires a dtb in order to boot, and the dtb will override * the board ID. The following value is ignored, so set it to -1 to be * clear that the value is meaningless. */ highbank_binfo.board_id = -1; highbank_binfo.nb_cpus = smp_cpus; highbank_binfo.loader_start = 0; highbank_binfo.write_secondary_boot = hb_write_secondary; highbank_binfo.secondary_cpu_reset_hook = hb_reset_secondary; arm_load_kernel(arm_env_get_cpu(first_cpu), &highbank_binfo); } static QEMUMachine highbank_machine = { .name = "highbank", .desc = "Calxeda Highbank (ECX-1000)", .init = highbank_init, .use_scsi = 1, .max_cpus = 4, }; static void highbank_machine_init(void) { qemu_register_machine(&highbank_machine); } machine_init(highbank_machine_init);