/* * ARM Versatile Express emulation. * * Copyright (c) 2010 - 2011 B Labs Ltd. * Copyright (c) 2011 Linaro Limited * Written by Bahadir Balban, Amit Mahajan, Peter Maydell * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that 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 "primecell.h" #include "devices.h" #include "net.h" #include "sysemu.h" #include "boards.h" #define SMP_BOOT_ADDR 0xe0000000 #define VEXPRESS_BOARD_ID 0x8e0 static struct arm_boot_info vexpress_binfo = { .smp_loader_start = SMP_BOOT_ADDR, }; static void vexpress_a9_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) { CPUState *env = NULL; ram_addr_t ram_offset, vram_offset, sram_offset; DeviceState *dev, *sysctl; SysBusDevice *busdev; qemu_irq *irqp; qemu_irq pic[64]; int n; qemu_irq cpu_irq[4]; uint32_t proc_id; uint32_t sys_id; ram_addr_t low_ram_size, vram_size, sram_size; if (!cpu_model) { cpu_model = "cortex-a9"; } for (n = 0; n < smp_cpus; n++) { env = cpu_init(cpu_model); if (!env) { fprintf(stderr, "Unable to find CPU definition\n"); exit(1); } irqp = arm_pic_init_cpu(env); cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ]; } if (ram_size > 0x40000000) { /* 1GB is the maximum the address space permits */ fprintf(stderr, "vexpress: cannot model more than 1GB RAM\n"); exit(1); } ram_offset = qemu_ram_alloc(NULL, "vexpress.highmem", ram_size); low_ram_size = ram_size; if (low_ram_size > 0x4000000) { low_ram_size = 0x4000000; } /* RAM is from 0x60000000 upwards. The bottom 64MB of the * address space should in theory be remappable to various * things including ROM or RAM; we always map the RAM there. */ cpu_register_physical_memory(0x0, low_ram_size, ram_offset | IO_MEM_RAM); cpu_register_physical_memory(0x60000000, ram_size, ram_offset | IO_MEM_RAM); /* 0x1e000000 A9MPCore (SCU) private memory region */ dev = qdev_create(NULL, "a9mpcore_priv"); qdev_prop_set_uint32(dev, "num-cpu", smp_cpus); qdev_init_nofail(dev); busdev = sysbus_from_qdev(dev); vexpress_binfo.smp_priv_base = 0x1e000000; sysbus_mmio_map(busdev, 0, vexpress_binfo.smp_priv_base); for (n = 0; n < smp_cpus; n++) { sysbus_connect_irq(busdev, n, cpu_irq[n]); } /* Interrupts [42:0] are from the motherboard; * [47:43] are reserved; [63:48] are daughterboard * peripherals. Note that some documentation numbers * external interrupts starting from 32 (because the * A9MP has internal interrupts 0..31). */ for (n = 0; n < 64; n++) { pic[n] = qdev_get_gpio_in(dev, n); } /* Motherboard peripherals CS7 : 0x10000000 .. 0x10020000 */ sys_id = 0x1190f500; proc_id = 0x0c000191; /* 0x10000000 System registers */ sysctl = qdev_create(NULL, "realview_sysctl"); qdev_prop_set_uint32(sysctl, "sys_id", sys_id); qdev_init_nofail(sysctl); qdev_prop_set_uint32(sysctl, "proc_id", proc_id); sysbus_mmio_map(sysbus_from_qdev(sysctl), 0, 0x10000000); /* 0x10001000 SP810 system control */ /* 0x10002000 serial bus PCI */ /* 0x10004000 PL041 audio */ dev = sysbus_create_varargs("pl181", 0x10005000, pic[9], pic[10], NULL); /* Wire up MMC card detect and read-only signals */ qdev_connect_gpio_out(dev, 0, qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_WPROT)); qdev_connect_gpio_out(dev, 1, qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_CARDIN)); sysbus_create_simple("pl050_keyboard", 0x10006000, pic[12]); sysbus_create_simple("pl050_mouse", 0x10007000, pic[13]); sysbus_create_simple("pl011", 0x10009000, pic[5]); sysbus_create_simple("pl011", 0x1000a000, pic[6]); sysbus_create_simple("pl011", 0x1000b000, pic[7]); sysbus_create_simple("pl011", 0x1000c000, pic[8]); /* 0x1000f000 SP805 WDT */ sysbus_create_simple("sp804", 0x10011000, pic[2]); sysbus_create_simple("sp804", 0x10012000, pic[3]); /* 0x10016000 Serial Bus DVI */ sysbus_create_simple("pl031", 0x10017000, pic[4]); /* RTC */ /* 0x1001a000 Compact Flash */ /* 0x1001f000 PL111 CLCD (motherboard) */ /* Daughterboard peripherals : 0x10020000 .. 0x20000000 */ /* 0x10020000 PL111 CLCD (daughterboard) */ sysbus_create_simple("pl110", 0x10020000, pic[44]); /* 0x10060000 AXI RAM */ /* 0x100e0000 PL341 Dynamic Memory Controller */ /* 0x100e1000 PL354 Static Memory Controller */ /* 0x100e2000 System Configuration Controller */ sysbus_create_simple("sp804", 0x100e4000, pic[48]); /* 0x100e5000 SP805 Watchdog module */ /* 0x100e6000 BP147 TrustZone Protection Controller */ /* 0x100e9000 PL301 'Fast' AXI matrix */ /* 0x100ea000 PL301 'Slow' AXI matrix */ /* 0x100ec000 TrustZone Address Space Controller */ /* 0x10200000 CoreSight debug APB */ /* 0x1e00a000 PL310 L2 Cache Controller */ /* CS0: NOR0 flash : 0x40000000 .. 0x44000000 */ /* CS4: NOR1 flash : 0x44000000 .. 0x48000000 */ /* CS2: SRAM : 0x48000000 .. 0x4a000000 */ sram_size = 0x2000000; sram_offset = qemu_ram_alloc(NULL, "vexpress.sram", sram_size); cpu_register_physical_memory(0x48000000, sram_size, sram_offset | IO_MEM_RAM); /* CS3: USB, ethernet, VRAM : 0x4c000000 .. 0x50000000 */ /* 0x4c000000 Video RAM */ vram_size = 0x800000; vram_offset = qemu_ram_alloc(NULL, "vexpress.vram", vram_size); cpu_register_physical_memory(0x4c000000, vram_size, vram_offset | IO_MEM_RAM); /* 0x4e000000 LAN9118 Ethernet */ if (nd_table[0].vlan) { lan9118_init(&nd_table[0], 0x4e000000, pic[15]); } /* 0x4f000000 ISP1761 USB */ /* ??? Hack to map an additional page of ram for the secondary CPU startup code. I guess this works on real hardware because the BootROM happens to be in ROM/flash or in memory that isn't clobbered until after Linux boots the secondary CPUs. */ ram_offset = qemu_ram_alloc(NULL, "vexpress.hack", 0x1000); cpu_register_physical_memory(SMP_BOOT_ADDR, 0x1000, ram_offset | IO_MEM_RAM); vexpress_binfo.ram_size = ram_size; vexpress_binfo.kernel_filename = kernel_filename; vexpress_binfo.kernel_cmdline = kernel_cmdline; vexpress_binfo.initrd_filename = initrd_filename; vexpress_binfo.nb_cpus = smp_cpus; vexpress_binfo.board_id = VEXPRESS_BOARD_ID; vexpress_binfo.loader_start = 0x60000000; arm_load_kernel(first_cpu, &vexpress_binfo); } static QEMUMachine vexpress_a9_machine = { .name = "vexpress-a9", .desc = "ARM Versatile Express for Cortex-A9", .init = vexpress_a9_init, .use_scsi = 1, .max_cpus = 4, }; static void vexpress_machine_init(void) { qemu_register_machine(&vexpress_a9_machine); } machine_init(vexpress_machine_init);