File:  [Qemu by Fabrice Bellard] / qemu / hw / etraxfs.c
Revision 1.1.1.2 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:53:21 2018 UTC (2 years, 7 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, HEAD
qemu 0.10.0

    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: #include <time.h>
   25: #include <sys/time.h>
   26: #include "hw.h"
   27: #include "net.h"
   28: #include "flash.h"
   29: #include "sysemu.h"
   30: #include "devices.h"
   31: #include "boards.h"
   32: 
   33: #include "etraxfs.h"
   34: 
   35: #define FLASH_SIZE 0x2000000
   36: #define INTMEM_SIZE (128 * 1024)
   37: 
   38: static uint32_t bootstrap_pc;
   39: 
   40: static void main_cpu_reset(void *opaque)
   41: {
   42:     CPUState *env = opaque;
   43:     cpu_reset(env);
   44: 
   45:     env->pc = bootstrap_pc;
   46: }
   47: 
   48: static
   49: void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
   50:                        const char *boot_device,
   51:                        const char *kernel_filename, const char *kernel_cmdline,
   52:                        const char *initrd_filename, const char *cpu_model)
   53: {
   54:     CPUState *env;
   55:     struct etraxfs_pic *pic;
   56:     void *etraxfs_dmac;
   57:     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
   58:     int kernel_size;
   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:     i = drive_get_index(IF_PFLASH, 0, 0);
   84:     pflash_cfi02_register(0x0, phys_flash,
   85:                           i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024),
   86:                           FLASH_SIZE >> 16,
   87:                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
   88:                           0x555, 0x2aa);
   89:     pic = etraxfs_pic_init(env, 0x3001c000);
   90:     etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
   91:     for (i = 0; i < 10; i++) {
   92:         /* On ETRAX, odd numbered channels are inputs.  */
   93:         etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1);
   94:     }
   95: 
   96:     /* Add the two ethernet blocks.  */
   97:     eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0x30034000, 1);
   98:     if (nb_nics > 1)
   99:         eth[1] = etraxfs_eth_init(&nd_table[1], env,
  100:                                   pic->irq + 26, 0x30036000, 2);
  101: 
  102:     /* The DMA Connector block is missing, hardwire things for now.  */
  103:     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
  104:     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
  105:     if (eth[1]) {
  106:         etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
  107:         etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
  108:     }
  109: 
  110:     /* 2 timers.  */
  111:     etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3001e000);
  112:     etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3005e000);
  113: 
  114:     for (i = 0; i < 4; i++) {
  115:         if (serial_hds[i]) {
  116:             etraxfs_ser_init(env, pic->irq + 0x14 + i,
  117:                              serial_hds[i], 0x30026000 + i * 0x2000);
  118:         }
  119:     }
  120: 
  121:     if (kernel_filename) {
  122:         uint64_t entry, high;
  123:         int kcmdline_len;
  124: 
  125:         /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis 
  126:            devboard SDK.  */
  127:         kernel_size = load_elf(kernel_filename, -0x80000000LL,
  128:                                &entry, NULL, &high);
  129:         bootstrap_pc = entry;
  130:         if (kernel_size < 0) {
  131:             /* Takes a kimage from the axis devboard SDK.  */
  132:             kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
  133:             bootstrap_pc = 0x40004000;
  134:             env->regs[9] = 0x40004000 + kernel_size;
  135:         }
  136:         env->regs[8] = 0x56902387; /* RAM init magic.  */
  137: 
  138:         if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
  139:             if (kcmdline_len > 256) {
  140:                 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
  141:                 exit(1);
  142:             }
  143:             pstrcpy_targphys(high, 256, kernel_cmdline);
  144:             /* Let the kernel know we are modifying the cmdline.  */
  145:             env->regs[10] = 0x87109563;
  146:             env->regs[11] = high;
  147:         }
  148:     }
  149:     env->pc = bootstrap_pc;
  150: 
  151:     printf ("pc =%x\n", env->pc);
  152:     printf ("ram size =%ld\n", ram_size);
  153: }
  154: 
  155: QEMUMachine bareetraxfs_machine = {
  156:     .name = "bareetraxfs",
  157:     .desc = "Bare ETRAX FS board",
  158:     .init = bareetraxfs_init,
  159:     .ram_require = 0x8000000,
  160: };

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