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 #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_dma.h"
  34
  35 static void main_cpu_reset(void *opaque)
  36 {
  37     CPUState *env = opaque;
  38     cpu_reset(env);
  39 }
  40
  41 /* Init functions for different blocks.  */
  42 extern qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
  43 void etraxfs_timer_init(CPUState *env, qemu_irq *irqs,
  44                         target_phys_addr_t base);
  45 void *etraxfs_eth_init(NICInfo *nd, CPUState *env,
  46                        qemu_irq *irq, target_phys_addr_t base);
  47 void etraxfs_ser_init(CPUState *env, qemu_irq *irq, CharDriverState *chr,
  48                       target_phys_addr_t base);
  49
  50 #define FLASH_SIZE 0x2000000
  51 #define INTMEM_SIZE (128 * 1024)
  52
  53 static void *etraxfs_dmac;
  54
  55 static
  56 void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
  57                        const char *boot_device, DisplayState *ds,
  58                        const char *kernel_filename, const char *kernel_cmdline,
  59                        const char *initrd_filename, const char *cpu_model)
  60 {
  61     CPUState *env;
  62     qemu_irq *pic;
  63     struct etraxfs_dma_client *eth0;
  64     int kernel_size;
  65     int i;
  66     ram_addr_t phys_ram;
  67     ram_addr_t phys_intmem;
  68
  69     /* init CPUs */
  70     if (cpu_model == NULL) {
  71         cpu_model = "crisv32";
  72     }
  73     env = cpu_init(cpu_model);
  74 /*    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); */
  75     qemu_register_reset(main_cpu_reset, env);
  76
  77     /* allocate RAM */
  78     phys_ram = qemu_ram_alloc(ram_size);
  79     cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
  80     /* Unached mapping.  */
  81     cpu_register_physical_memory(0xc0000000, ram_size, phys_ram | IO_MEM_RAM);
  82
  83     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
  84        internal memory. Cached and uncached mappings.  */
  85     phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
  86     cpu_register_physical_memory(0xb8000000, INTMEM_SIZE,
  87                                  phys_intmem | IO_MEM_RAM);
  88     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
  89                                  phys_intmem | IO_MEM_RAM);
  90
  91     cpu_register_physical_memory(0, FLASH_SIZE, IO_MEM_ROM);
  92     cpu_register_physical_memory(0x80000000, FLASH_SIZE, IO_MEM_ROM);
  93     cpu_register_physical_memory(0x04000000, FLASH_SIZE, IO_MEM_ROM);
  94     cpu_register_physical_memory(0x84000000, FLASH_SIZE,
  95                                  0x04000000 | IO_MEM_ROM);
  96     i = drive_get_index(IF_PFLASH, 0, 0);
  97     pflash_cfi02_register(0x80000000, qemu_ram_alloc(FLASH_SIZE),
  98                           drives_table[i].bdrv, (64 * 1024),
  99                           FLASH_SIZE >> 16,
 100                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000, 0x555, 0x2aa);
 101
 102     pic = etraxfs_pic_init(env, 0xb001c000);
 103     etraxfs_dmac = etraxfs_dmac_init(env, 0xb0000000, 10);
 104     for (i = 0; i < 10; i++) {
 105             /* On ETRAX, odd numbered channels are inputs.  */
 106             etraxfs_dmac_connect(etraxfs_dmac, i, pic + 7 + i, i & 1);
 107     }
 108
 109     /* It has 2, but let's start with one ethernet block.  */
 110     eth0 = etraxfs_eth_init(&nd_table[0], env, pic + 25, 0xb0034000);
 111
 112     /* The DMA Connector block is missing, hardwire things for now.  */
 113     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth0);
 114     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth0 + 1);
 115
 116     /* 2 timers.  */
 117     etraxfs_timer_init(env, pic + 0x1b, 0xb001e000);
 118     etraxfs_timer_init(env, pic + 0x1b, 0xb005e000);
 119
 120     for (i = 0; i < 4; i++) {
 121             if (serial_hds[i]) {
 122                     etraxfs_ser_init(env, pic + 0x14 + i,
 123                                      serial_hds[i], 0xb0026000 + i * 0x2000);
 124             }
 125     }
 126
 127 #if 1
 128     /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis devboard
 129        SDK.  */
 130     kernel_size = load_elf(kernel_filename, 0, &env->pc, NULL, NULL);
 131 #else
 132     /* Takes a kimage from the axis devboard SDK.  */
 133     kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
 134     env->pc = 0x40004000;
 135 #endif
 136     /* magic for boot.  */
 137     env->regs[8] = 0x56902387;
 138     env->regs[9] = 0x40004000 + kernel_size;
 139
 140     {
 141        unsigned char *ptr = phys_ram_base + 0x4000;
 142        int i;
 143        for (i = 0; i < 8; i++)
 144        {
 145                 printf ("%2.2x ", ptr[i]);
 146        }
 147         printf("\n");
 148     }
 149
 150     printf ("pc =%x\n", env->pc);
 151     printf ("ram size =%ld\n", ram_size);
 152     printf ("kernel name =%s\n", kernel_filename);
 153     printf ("kernel size =%d\n", kernel_size);
 154     printf ("cpu haltd =%d\n", env->halted);
 155 }
 156
 157 void DMA_run(void)
 158 {
 159         etraxfs_dmac_run(etraxfs_dmac);
 160 }
 161
 162 QEMUMachine bareetraxfs_machine = {
 163     "bareetraxfs",
 164     "Bare ETRAX FS board",
 165     bareetraxfs_init,
 166     0x4000000,
 167 };