File:  [Qemu by Fabrice Bellard] / qemu / hw / etraxfs.c
Revision 1.1.1.5 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 17:38:52 2018 UTC (2 years, 7 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu0125, qemu0124, qemu0123, qemu0122, qemu0121, qemu0120, HEAD
qemu 0.12.0

    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: #include "loader.h"
   32: #include "elf.h"
   33: 
   34: #define FLASH_SIZE 0x2000000
   35: #define INTMEM_SIZE (128 * 1024)
   36: 
   37: static uint32_t bootstrap_pc;
   38: 
   39: static void main_cpu_reset(void *opaque)
   40: {
   41:     CPUState *env = opaque;
   42:     cpu_reset(env);
   43: 
   44:     env->pc = bootstrap_pc;
   45: }
   46: 
   47: static
   48: void bareetraxfs_init (ram_addr_t ram_size,
   49:                        const char *boot_device,
   50:                        const char *kernel_filename, const char *kernel_cmdline,
   51:                        const char *initrd_filename, const char *cpu_model)
   52: {
   53:     DeviceState *dev;
   54:     SysBusDevice *s;
   55:     CPUState *env;
   56:     qemu_irq irq[30], nmi[2], *cpu_irq; 
   57:     void *etraxfs_dmac;
   58:     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
   59:     int kernel_size;
   60:     DriveInfo *dinfo;
   61:     int i;
   62:     ram_addr_t phys_ram;
   63:     ram_addr_t phys_flash;
   64:     ram_addr_t phys_intmem;
   65: 
   66:     /* init CPUs */
   67:     if (cpu_model == NULL) {
   68:         cpu_model = "crisv32";
   69:     }
   70:     env = cpu_init(cpu_model);
   71:     qemu_register_reset(main_cpu_reset, env);
   72: 
   73:     /* allocate RAM */
   74:     phys_ram = qemu_ram_alloc(ram_size);
   75:     cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
   76: 
   77:     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the 
   78:        internal memory.  */
   79:     phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
   80:     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
   81:                                  phys_intmem | IO_MEM_RAM);
   82: 
   83: 
   84:     phys_flash = qemu_ram_alloc(FLASH_SIZE);
   85:     dinfo = drive_get(IF_PFLASH, 0, 0);
   86:     pflash_cfi02_register(0x0, phys_flash,
   87:                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
   88:                           FLASH_SIZE >> 16,
   89:                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
   90:                           0x555, 0x2aa);
   91:     cpu_irq = cris_pic_init_cpu(env);
   92:     dev = qdev_create(NULL, "etraxfs,pic");
   93:     /* FIXME: Is there a proper way to signal vectors to the CPU core?  */
   94:     qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
   95:     qdev_init_nofail(dev);
   96:     s = sysbus_from_qdev(dev);
   97:     sysbus_mmio_map(s, 0, 0x3001c000);
   98:     sysbus_connect_irq(s, 0, cpu_irq[0]);
   99:     sysbus_connect_irq(s, 1, cpu_irq[1]);
  100:     for (i = 0; i < 30; i++) {
  101:         irq[i] = qdev_get_gpio_in(dev, i);
  102:     }
  103:     nmi[0] = qdev_get_gpio_in(dev, 30);
  104:     nmi[1] = qdev_get_gpio_in(dev, 31);
  105: 
  106:     etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
  107:     for (i = 0; i < 10; i++) {
  108:         /* On ETRAX, odd numbered channels are inputs.  */
  109:         etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
  110:     }
  111: 
  112:     /* Add the two ethernet blocks.  */
  113:     eth[0] = etraxfs_eth_init(&nd_table[0], 0x30034000, 1);
  114:     if (nb_nics > 1)
  115:         eth[1] = etraxfs_eth_init(&nd_table[1], 0x30036000, 2);
  116: 
  117:     /* The DMA Connector block is missing, hardwire things for now.  */
  118:     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
  119:     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
  120:     if (eth[1]) {
  121:         etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
  122:         etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
  123:     }
  124: 
  125:     /* 2 timers.  */
  126:     sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
  127:     sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
  128: 
  129:     for (i = 0; i < 4; i++) {
  130:         sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
  131:                              irq[0x14 + i]); 
  132:     }
  133: 
  134:     if (kernel_filename) {
  135:         uint64_t entry, high;
  136:         int kcmdline_len;
  137: 
  138:         /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis 
  139:            devboard SDK.  */
  140:         kernel_size = load_elf(kernel_filename, -0x80000000LL,
  141:                                &entry, NULL, &high, 0, ELF_MACHINE, 0);
  142:         bootstrap_pc = entry;
  143:         if (kernel_size < 0) {
  144:             /* Takes a kimage from the axis devboard SDK.  */
  145:             kernel_size = load_image_targphys(kernel_filename, 0x40004000,
  146:                                               ram_size);
  147:             bootstrap_pc = 0x40004000;
  148:             env->regs[9] = 0x40004000 + kernel_size;
  149:         }
  150:         env->regs[8] = 0x56902387; /* RAM init magic.  */
  151: 
  152:         if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
  153:             if (kcmdline_len > 256) {
  154:                 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
  155:                 exit(1);
  156:             }
  157:             /* Let the kernel know we are modifying the cmdline.  */
  158:             env->regs[10] = 0x87109563;
  159:             env->regs[11] = 0x40000000;
  160:             pstrcpy_targphys("cmdline", env->regs[11], 256, kernel_cmdline);
  161:         }
  162:     }
  163:     env->pc = bootstrap_pc;
  164: 
  165:     printf ("pc =%x\n", env->pc);
  166:     printf ("ram size =%ld\n", ram_size);
  167: }
  168: 
  169: static QEMUMachine bareetraxfs_machine = {
  170:     .name = "bareetraxfs",
  171:     .desc = "Bare ETRAX FS board",
  172:     .init = bareetraxfs_init,
  173:     .is_default = 1,
  174: };
  175: 
  176: static void bareetraxfs_machine_init(void)
  177: {
  178:     qemu_register_machine(&bareetraxfs_machine);
  179: }
  180: 
  181: machine_init(bareetraxfs_machine_init);

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