File:  [Qemu by Fabrice Bellard] / qemu / hw / etraxfs.c
Revision 1.1.1.8 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 19:00:51 2018 UTC (2 years, 6 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu1000, qemu0151, HEAD
qemu 0.15.1

    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 "net.h"
   28: #include "flash.h"
   29: #include "etraxfs.h"
   30: #include "loader.h"
   31: #include "elf.h"
   32: #include "cris-boot.h"
   33: #include "blockdev.h"
   34: 
   35: #define FLASH_SIZE 0x2000000
   36: #define INTMEM_SIZE (128 * 1024)
   37: 
   38: static struct cris_load_info li;
   39: 
   40: static void flash_cpu_reset(void *opaque)
   41: {
   42:     CPUState *env = opaque;
   43:     cpu_reset(env);
   44: }
   45: 
   46: static
   47: void bareetraxfs_init (ram_addr_t ram_size,
   48:                        const char *boot_device,
   49:                        const char *kernel_filename, const char *kernel_cmdline,
   50:                        const char *initrd_filename, const char *cpu_model)
   51: {
   52:     DeviceState *dev;
   53:     SysBusDevice *s;
   54:     CPUState *env;
   55:     qemu_irq irq[30], nmi[2], *cpu_irq; 
   56:     void *etraxfs_dmac;
   57:     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
   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: 
   70:     /* allocate RAM */
   71:     phys_ram = qemu_ram_alloc(NULL, "etraxfs.ram", ram_size);
   72:     cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
   73: 
   74:     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the 
   75:        internal memory.  */
   76:     phys_intmem = qemu_ram_alloc(NULL, "etraxfs.chipram", INTMEM_SIZE);
   77:     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
   78:                                  phys_intmem | IO_MEM_RAM);
   79: 
   80: 
   81:     phys_flash = qemu_ram_alloc(NULL, "etraxfs.flash", FLASH_SIZE);
   82:     dinfo = drive_get(IF_PFLASH, 0, 0);
   83:     pflash_cfi02_register(0x0, phys_flash,
   84:                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
   85:                           FLASH_SIZE >> 16,
   86:                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
   87:                           0x555, 0x2aa, 0);
   88:     cpu_irq = cris_pic_init_cpu(env);
   89:     dev = qdev_create(NULL, "etraxfs,pic");
   90:     /* FIXME: Is there a proper way to signal vectors to the CPU core?  */
   91:     qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
   92:     qdev_init_nofail(dev);
   93:     s = sysbus_from_qdev(dev);
   94:     sysbus_mmio_map(s, 0, 0x3001c000);
   95:     sysbus_connect_irq(s, 0, cpu_irq[0]);
   96:     sysbus_connect_irq(s, 1, cpu_irq[1]);
   97:     for (i = 0; i < 30; i++) {
   98:         irq[i] = qdev_get_gpio_in(dev, i);
   99:     }
  100:     nmi[0] = qdev_get_gpio_in(dev, 30);
  101:     nmi[1] = qdev_get_gpio_in(dev, 31);
  102: 
  103:     etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
  104:     for (i = 0; i < 10; i++) {
  105:         /* On ETRAX, odd numbered channels are inputs.  */
  106:         etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
  107:     }
  108: 
  109:     /* Add the two ethernet blocks.  */
  110:     eth[0] = etraxfs_eth_init(&nd_table[0], 0x30034000, 1);
  111:     if (nb_nics > 1)
  112:         eth[1] = etraxfs_eth_init(&nd_table[1], 0x30036000, 2);
  113: 
  114:     /* The DMA Connector block is missing, hardwire things for now.  */
  115:     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
  116:     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
  117:     if (eth[1]) {
  118:         etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
  119:         etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
  120:     }
  121: 
  122:     /* 2 timers.  */
  123:     sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
  124:     sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
  125: 
  126:     for (i = 0; i < 4; i++) {
  127:         sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
  128:                              irq[0x14 + i]); 
  129:     }
  130: 
  131:     if (kernel_filename) {
  132:         li.image_filename = kernel_filename;
  133:         li.cmdline = kernel_cmdline;
  134:         cris_load_image(env, &li);
  135:     } else {
  136:         if (!dinfo) {
  137:             fprintf(stderr,
  138:                     "Provide a kernel image or a flash image to boot from.\n");
  139:            exit(1);
  140:         }
  141: 
  142:         /* Nothing more to do for flash images, those boot from addr 0.  */
  143:         qemu_register_reset(flash_cpu_reset, env);
  144:     }
  145: }
  146: 
  147: static QEMUMachine bareetraxfs_machine = {
  148:     .name = "bareetraxfs",
  149:     .desc = "Bare ETRAX FS board",
  150:     .init = bareetraxfs_init,
  151:     .is_default = 1,
  152: };
  153: 
  154: static void bareetraxfs_machine_init(void)
  155: {
  156:     qemu_register_machine(&bareetraxfs_machine);
  157: }
  158: 
  159: machine_init(bareetraxfs_machine_init);

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