hw/vexpress.c

   1 /*
   2  * ARM Versatile Express emulation.
   3  *
   4  * Copyright (c) 2010 - 2011 B Labs Ltd.
   5  * Copyright (c) 2011 Linaro Limited
   6  * Written by Bahadir Balban, Amit Mahajan, Peter Maydell
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "sysbus.h"
  22 #include "arm-misc.h"
  23 #include "primecell.h"
  24 #include "devices.h"
  25 #include "net.h"
  26 #include "sysemu.h"
  27 #include "boards.h"
  28
  29 #define SMP_BOOT_ADDR 0xe0000000
  30
  31 #define VEXPRESS_BOARD_ID 0x8e0
  32
  33 static struct arm_boot_info vexpress_binfo = {
  34     .smp_loader_start = SMP_BOOT_ADDR,
  35 };
  36
  37 static void vexpress_a9_init(ram_addr_t ram_size,
  38                      const char *boot_device,
  39                      const char *kernel_filename, const char *kernel_cmdline,
  40                      const char *initrd_filename, const char *cpu_model)
  41 {
  42     CPUState *env = NULL;
  43     ram_addr_t ram_offset, vram_offset, sram_offset;
  44     DeviceState *dev, *sysctl;
  45     SysBusDevice *busdev;
  46     qemu_irq *irqp;
  47     qemu_irq pic[64];
  48     int n;
  49     qemu_irq cpu_irq[4];
  50     uint32_t proc_id;
  51     uint32_t sys_id;
  52     ram_addr_t low_ram_size, vram_size, sram_size;
  53
  54     if (!cpu_model) {
  55         cpu_model = "cortex-a9";
  56     }
  57
  58     for (n = 0; n < smp_cpus; n++) {
  59         env = cpu_init(cpu_model);
  60         if (!env) {
  61             fprintf(stderr, "Unable to find CPU definition\n");
  62             exit(1);
  63         }
  64         irqp = arm_pic_init_cpu(env);
  65         cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
  66     }
  67
  68     if (ram_size > 0x40000000) {
  69         /* 1GB is the maximum the address space permits */
  70         fprintf(stderr, "vexpress: cannot model more than 1GB RAM\n");
  71         exit(1);
  72     }
  73
  74     ram_offset = qemu_ram_alloc(NULL, "vexpress.highmem", ram_size);
  75     low_ram_size = ram_size;
  76     if (low_ram_size > 0x4000000) {
  77         low_ram_size = 0x4000000;
  78     }
  79     /* RAM is from 0x60000000 upwards. The bottom 64MB of the
  80      * address space should in theory be remappable to various
  81      * things including ROM or RAM; we always map the RAM there.
  82      */
  83     cpu_register_physical_memory(0x0, low_ram_size, ram_offset | IO_MEM_RAM);
  84     cpu_register_physical_memory(0x60000000, ram_size,
  85                                  ram_offset | IO_MEM_RAM);
  86
  87     /* 0x1e000000 A9MPCore (SCU) private memory region */
  88     dev = qdev_create(NULL, "a9mpcore_priv");
  89     qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
  90     qdev_init_nofail(dev);
  91     busdev = sysbus_from_qdev(dev);
  92     vexpress_binfo.smp_priv_base = 0x1e000000;
  93     sysbus_mmio_map(busdev, 0, vexpress_binfo.smp_priv_base);
  94     for (n = 0; n < smp_cpus; n++) {
  95         sysbus_connect_irq(busdev, n, cpu_irq[n]);
  96     }
  97     /* Interrupts [42:0] are from the motherboard;
  98      * [47:43] are reserved; [63:48] are daughterboard
  99      * peripherals. Note that some documentation numbers
 100      * external interrupts starting from 32 (because the
 101      * A9MP has internal interrupts 0..31).
 102      */
 103     for (n = 0; n < 64; n++) {
 104         pic[n] = qdev_get_gpio_in(dev, n);
 105     }
 106
 107     /* Motherboard peripherals CS7 : 0x10000000 .. 0x10020000 */
 108     sys_id = 0x1190f500;
 109     proc_id = 0x0c000191;
 110
 111     /* 0x10000000 System registers */
 112     sysctl = qdev_create(NULL, "realview_sysctl");
 113     qdev_prop_set_uint32(sysctl, "sys_id", sys_id);
 114     qdev_init_nofail(sysctl);
 115     qdev_prop_set_uint32(sysctl, "proc_id", proc_id);
 116     sysbus_mmio_map(sysbus_from_qdev(sysctl), 0, 0x10000000);
 117
 118     /* 0x10001000 SP810 system control */
 119     /* 0x10002000 serial bus PCI */
 120     /* 0x10004000 PL041 audio */
 121
 122     dev = sysbus_create_varargs("pl181", 0x10005000, pic[9], pic[10], NULL);
 123     /* Wire up MMC card detect and read-only signals */
 124     qdev_connect_gpio_out(dev, 0,
 125                           qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_WPROT));
 126     qdev_connect_gpio_out(dev, 1,
 127                           qdev_get_gpio_in(sysctl, ARM_SYSCTL_GPIO_MMC_CARDIN));
 128
 129     sysbus_create_simple("pl050_keyboard", 0x10006000, pic[12]);
 130     sysbus_create_simple("pl050_mouse", 0x10007000, pic[13]);
 131
 132     sysbus_create_simple("pl011", 0x10009000, pic[5]);
 133     sysbus_create_simple("pl011", 0x1000a000, pic[6]);
 134     sysbus_create_simple("pl011", 0x1000b000, pic[7]);
 135     sysbus_create_simple("pl011", 0x1000c000, pic[8]);
 136
 137     /* 0x1000f000 SP805 WDT */
 138
 139     sysbus_create_simple("sp804", 0x10011000, pic[2]);
 140     sysbus_create_simple("sp804", 0x10012000, pic[3]);
 141
 142     /* 0x10016000 Serial Bus DVI */
 143
 144     sysbus_create_simple("pl031", 0x10017000, pic[4]); /* RTC */
 145
 146     /* 0x1001a000 Compact Flash */
 147
 148     /* 0x1001f000 PL111 CLCD (motherboard) */
 149
 150     /* Daughterboard peripherals : 0x10020000 .. 0x20000000 */
 151
 152     /* 0x10020000 PL111 CLCD (daughterboard) */
 153     sysbus_create_simple("pl110", 0x10020000, pic[44]);
 154
 155     /* 0x10060000 AXI RAM */
 156     /* 0x100e0000 PL341 Dynamic Memory Controller */
 157     /* 0x100e1000 PL354 Static Memory Controller */
 158     /* 0x100e2000 System Configuration Controller */
 159
 160     sysbus_create_simple("sp804", 0x100e4000, pic[48]);
 161     /* 0x100e5000 SP805 Watchdog module */
 162     /* 0x100e6000 BP147 TrustZone Protection Controller */
 163     /* 0x100e9000 PL301 'Fast' AXI matrix */
 164     /* 0x100ea000 PL301 'Slow' AXI matrix */
 165     /* 0x100ec000 TrustZone Address Space Controller */
 166     /* 0x10200000 CoreSight debug APB */
 167     /* 0x1e00a000 PL310 L2 Cache Controller */
 168
 169     /* CS0: NOR0 flash          : 0x40000000 .. 0x44000000 */
 170     /* CS4: NOR1 flash          : 0x44000000 .. 0x48000000 */
 171     /* CS2: SRAM                : 0x48000000 .. 0x4a000000 */
 172     sram_size = 0x2000000;
 173     sram_offset = qemu_ram_alloc(NULL, "vexpress.sram", sram_size);
 174     cpu_register_physical_memory(0x48000000, sram_size,
 175                                  sram_offset | IO_MEM_RAM);
 176
 177     /* CS3: USB, ethernet, VRAM : 0x4c000000 .. 0x50000000 */
 178
 179     /* 0x4c000000 Video RAM */
 180     vram_size = 0x800000;
 181     vram_offset = qemu_ram_alloc(NULL, "vexpress.vram", vram_size);
 182     cpu_register_physical_memory(0x4c000000, vram_size,
 183                                  vram_offset | IO_MEM_RAM);
 184
 185     /* 0x4e000000 LAN9118 Ethernet */
 186     if (nd_table[0].vlan) {
 187         lan9118_init(&nd_table[0], 0x4e000000, pic[15]);
 188     }
 189
 190     /* 0x4f000000 ISP1761 USB */
 191
 192     /* ??? Hack to map an additional page of ram for the secondary CPU
 193        startup code.  I guess this works on real hardware because the
 194        BootROM happens to be in ROM/flash or in memory that isn't clobbered
 195        until after Linux boots the secondary CPUs.  */
 196     ram_offset = qemu_ram_alloc(NULL, "vexpress.hack", 0x1000);
 197     cpu_register_physical_memory(SMP_BOOT_ADDR, 0x1000,
 198                                  ram_offset | IO_MEM_RAM);
 199
 200     vexpress_binfo.ram_size = ram_size;
 201     vexpress_binfo.kernel_filename = kernel_filename;
 202     vexpress_binfo.kernel_cmdline = kernel_cmdline;
 203     vexpress_binfo.initrd_filename = initrd_filename;
 204     vexpress_binfo.nb_cpus = smp_cpus;
 205     vexpress_binfo.board_id = VEXPRESS_BOARD_ID;
 206     vexpress_binfo.loader_start = 0x60000000;
 207     arm_load_kernel(first_cpu, &vexpress_binfo);
 208 }
 209
 210
 211 static QEMUMachine vexpress_a9_machine = {
 212     .name = "vexpress-a9",
 213     .desc = "ARM Versatile Express for Cortex-A9",
 214     .init = vexpress_a9_init,
 215     .use_scsi = 1,
 216     .max_cpus = 4,
 217 };
 218
 219 static void vexpress_machine_init(void)
 220 {
 221     qemu_register_machine(&vexpress_a9_machine);
 222 }
 223
 224 machine_init(vexpress_machine_init);