hw/etraxfs.c

   1 /*
   2  * QEMU ETRAX System Emulator
   3  *
   4  * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "sysbus.h"
  26 #include "boards.h"
  27 #include "sysemu.h"
  28 #include "net.h"
  29 #include "flash.h"
  30 #include "etraxfs.h"
  31
  32 #define FLASH_SIZE 0x2000000
  33 #define INTMEM_SIZE (128 * 1024)
  34
  35 static uint32_t bootstrap_pc;
  36
  37 static void main_cpu_reset(void *opaque)
  38 {
  39     CPUState *env = opaque;
  40     cpu_reset(env);
  41
  42     env->pc = bootstrap_pc;
  43 }
  44
  45 static
  46 void bareetraxfs_init (ram_addr_t ram_size,
  47                        const char *boot_device,
  48                        const char *kernel_filename, const char *kernel_cmdline,
  49                        const char *initrd_filename, const char *cpu_model)
  50 {
  51     DeviceState *dev;
  52     SysBusDevice *s;
  53     CPUState *env;
  54     qemu_irq irq[30], nmi[2], *cpu_irq;
  55     void *etraxfs_dmac;
  56     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
  57     int kernel_size;
  58     DriveInfo *dinfo;
  59     int i;
  60     ram_addr_t phys_ram;
  61     ram_addr_t phys_flash;
  62     ram_addr_t phys_intmem;
  63
  64     /* init CPUs */
  65     if (cpu_model == NULL) {
  66         cpu_model = "crisv32";
  67     }
  68     env = cpu_init(cpu_model);
  69     qemu_register_reset(main_cpu_reset, env);
  70
  71     /* allocate RAM */
  72     phys_ram = qemu_ram_alloc(ram_size);
  73     cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
  74
  75     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
  76        internal memory.  */
  77     phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
  78     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
  79                                  phys_intmem | IO_MEM_RAM);
  80
  81
  82     phys_flash = qemu_ram_alloc(FLASH_SIZE);
  83     dinfo = drive_get(IF_PFLASH, 0, 0);
  84     pflash_cfi02_register(0x0, phys_flash,
  85                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
  86                           FLASH_SIZE >> 16,
  87                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
  88                           0x555, 0x2aa);
  89     cpu_irq = cris_pic_init_cpu(env);
  90     dev = qdev_create(NULL, "etraxfs,pic");
  91     /* FIXME: Is there a proper way to signal vectors to the CPU core?  */
  92     qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
  93     qdev_init(dev);
  94     s = sysbus_from_qdev(dev);
  95     sysbus_mmio_map(s, 0, 0x3001c000);
  96     sysbus_connect_irq(s, 0, cpu_irq[0]);
  97     sysbus_connect_irq(s, 1, cpu_irq[1]);
  98     for (i = 0; i < 30; i++) {
  99         irq[i] = qdev_get_gpio_in(dev, i);
 100     }
 101     nmi[0] = qdev_get_gpio_in(dev, 30);
 102     nmi[1] = qdev_get_gpio_in(dev, 31);
 103
 104     etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
 105     for (i = 0; i < 10; i++) {
 106         /* On ETRAX, odd numbered channels are inputs.  */
 107         etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
 108     }
 109
 110     /* Add the two ethernet blocks.  */
 111     eth[0] = etraxfs_eth_init(&nd_table[0], 0x30034000, 1);
 112     if (nb_nics > 1)
 113         eth[1] = etraxfs_eth_init(&nd_table[1], 0x30036000, 2);
 114
 115     /* The DMA Connector block is missing, hardwire things for now.  */
 116     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
 117     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
 118     if (eth[1]) {
 119         etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
 120         etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
 121     }
 122
 123     /* 2 timers.  */
 124     sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
 125     sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
 126
 127     for (i = 0; i < 4; i++) {
 128         sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
 129                              irq[0x14 + i]);
 130     }
 131
 132     if (kernel_filename) {
 133         uint64_t entry, high;
 134         int kcmdline_len;
 135
 136         /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
 137            devboard SDK.  */
 138         kernel_size = load_elf(kernel_filename, -0x80000000LL,
 139                                &entry, NULL, &high);
 140         bootstrap_pc = entry;
 141         if (kernel_size < 0) {
 142             /* Takes a kimage from the axis devboard SDK.  */
 143             kernel_size = load_image_targphys(kernel_filename, 0x40004000,
 144                                               ram_size);
 145             bootstrap_pc = 0x40004000;
 146             env->regs[9] = 0x40004000 + kernel_size;
 147         }
 148         env->regs[8] = 0x56902387; /* RAM init magic.  */
 149
 150         if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
 151             if (kcmdline_len > 256) {
 152                 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
 153                 exit(1);
 154             }
 155             /* Let the kernel know we are modifying the cmdline.  */
 156             env->regs[10] = 0x87109563;
 157             env->regs[11] = 0x40000000;
 158             pstrcpy_targphys(env->regs[11], 256, kernel_cmdline);
 159         }
 160     }
 161     env->pc = bootstrap_pc;
 162
 163     printf ("pc =%x\n", env->pc);
 164     printf ("ram size =%ld\n", ram_size);
 165 }
 166
 167 static QEMUMachine bareetraxfs_machine = {
 168     .name = "bareetraxfs",
 169     .desc = "Bare ETRAX FS board",
 170     .init = bareetraxfs_init,
 171     .is_default = 1,
 172 };
 173
 174 static void bareetraxfs_machine_init(void)
 175 {
 176     qemu_register_machine(&bareetraxfs_machine);
 177 }
 178
 179 machine_init(bareetraxfs_machine_init);