diff options
Diffstat (limited to 'hw/vexpress.c')
| -rw-r--r-- | hw/vexpress.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/hw/vexpress.c b/hw/vexpress.c new file mode 100644 index 0000000..9ffd332 --- /dev/null +++ b/hw/vexpress.c @@ -0,0 +1,224 @@ +/* + * 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); |