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 "sysemu.h"
  28 #include "flash.h"
  29 #include "boards.h"
  30
  31 static void main_cpu_reset(void *opaque)
  32 {
  33     CPUState *env = opaque;
  34     cpu_reset(env);
  35 }
  36
  37 /* Init functions for different blocks.  */
  38 extern qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
  39 void etraxfs_timer_init(CPUState *env, qemu_irq *irqs,
  40                         target_phys_addr_t base);
  41 void etraxfs_ser_init(CPUState *env, qemu_irq *irq, CharDriverState *chr,
  42                       target_phys_addr_t base);
  43
  44 #define FLASH_SIZE 0x2000000
  45 #define INTMEM_SIZE (128 * 1024)
  46
  47 static
  48 void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
  49                        const char *boot_device, DisplayState *ds,
  50                        const char *kernel_filename, const char *kernel_cmdline,
  51                        const char *initrd_filename, const char *cpu_model)
  52 {
  53     CPUState *env;
  54     qemu_irq *pic;
  55     int kernel_size;
  56     int index;
  57     ram_addr_t phys_ram;
  58     ram_addr_t phys_intmem;
  59
  60     /* init CPUs */
  61     if (cpu_model == NULL) {
  62         cpu_model = "crisv32";
  63     }
  64     env = cpu_init(cpu_model);
  65 /*    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); */
  66     qemu_register_reset(main_cpu_reset, env);
  67
  68     /* allocate RAM */
  69     phys_ram = qemu_ram_alloc(ram_size);
  70     cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
  71     /* Unached mapping.  */
  72     cpu_register_physical_memory(0xc0000000, 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. Cached and uncached mappings.  */
  76     phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
  77     cpu_register_physical_memory(0xb8000000, INTMEM_SIZE,
  78                                  phys_intmem | IO_MEM_RAM);
  79     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
  80                                  phys_intmem | IO_MEM_RAM);
  81
  82     cpu_register_physical_memory(0, FLASH_SIZE, IO_MEM_ROM);
  83     cpu_register_physical_memory(0x80000000, FLASH_SIZE, IO_MEM_ROM);
  84     cpu_register_physical_memory(0x04000000, FLASH_SIZE, IO_MEM_ROM);
  85     cpu_register_physical_memory(0x84000000, FLASH_SIZE,
  86                                  0x04000000 | IO_MEM_ROM);
  87     index = drive_get_index(IF_PFLASH, 0, 0);
  88     pflash_cfi01_register(0x80000000, FLASH_SIZE,
  89                           drives_table[index].bdrv, 65536, FLASH_SIZE >> 16,
  90                           4, 0x0000, 0x0000, 0x0000, 0x0000);
  91
  92     pic = etraxfs_pic_init(env, 0xb001c000);
  93     /* 2 timers.  */
  94     etraxfs_timer_init(env, pic + 26, 0xb001e000);
  95     etraxfs_timer_init(env, pic + 26, 0xb005e000);
  96     /* 4 serial ports.  */
  97     etraxfs_ser_init(env, pic + 19, serial_hds[0], 0xb0026000);
  98     if (serial_hds[1])
  99             etraxfs_ser_init(env, pic + 20, serial_hds[1], 0xb0028000);
 100     if (serial_hds[2])
 101             etraxfs_ser_init(env, pic + 21, serial_hds[2], 0xb002a000);
 102     if (serial_hds[3])
 103             etraxfs_ser_init(env, pic + 22, serial_hds[3], 0xb002c000);
 104
 105 #if 1
 106     /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis devboard
 107        SDK.  */
 108     kernel_size = load_elf(kernel_filename, 0, &env->pc, NULL, NULL);
 109 #else
 110     /* Takes a kimage from the axis devboard SDK.  */
 111     kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
 112     env->pc = 0x40004000;
 113 #endif
 114     /* magic for boot.  */
 115     env->regs[8] = 0x56902387;
 116     env->regs[9] = 0x40004000 + kernel_size;
 117
 118     {
 119        unsigned char *ptr = phys_ram_base + 0x4000;
 120        int i;
 121        for (i = 0; i < 8; i++)
 122        {
 123                 printf ("%2.2x ", ptr[i]);
 124        }
 125         printf("\n");
 126     }
 127
 128     printf ("pc =%x\n", env->pc);
 129     printf ("ram size =%d\n", ram_size);
 130     printf ("kernel name =%s\n", kernel_filename);
 131     printf ("kernel size =%d\n", kernel_size);
 132     printf ("cpu haltd =%d\n", env->halted);
 133 }
 134
 135 void DMA_run(void)
 136 {
 137 }
 138
 139 QEMUMachine bareetraxfs_machine = {
 140     "bareetraxfs",
 141     "Bare ETRAX FS board",
 142     bareetraxfs_init,
 143     0x800000,
 144 };