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.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->pregs[PR_CCS] &= ~I_FLAG;
  46     env->pc = bootstrap_pc;
  47 }
  48
  49 static
  50 void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
  51                        const char *boot_device, DisplayState *ds,
  52                        const char *kernel_filename, const char *kernel_cmdline,
  53                        const char *initrd_filename, const char *cpu_model)
  54 {
  55     CPUState *env;
  56     struct etraxfs_pic *pic;
  57     void *etraxfs_dmac;
  58     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
  59     int kernel_size;
  60     int i;
  61     ram_addr_t phys_ram;
  62     ram_addr_t phys_flash;
  63     ram_addr_t phys_intmem;
  64
  65     /* init CPUs */
  66     if (cpu_model == NULL) {
  67         cpu_model = "crisv32";
  68     }
  69     env = cpu_init(cpu_model);
  70 /*    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); */
  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     /* Unached mapping.  */
  77     cpu_register_physical_memory(0xc0000000, ram_size, phys_ram | IO_MEM_RAM);
  78
  79     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
  80        internal memory. Cached and uncached mappings.  */
  81     phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
  82     cpu_register_physical_memory(0xb8000000, INTMEM_SIZE,
  83                                  phys_intmem | IO_MEM_RAM);
  84     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
  85                                  phys_intmem | IO_MEM_RAM);
  86
  87
  88     phys_flash = qemu_ram_alloc(FLASH_SIZE);
  89     i = drive_get_index(IF_PFLASH, 0, 0);
  90     pflash_cfi02_register(0x80000000, phys_flash,
  91                           drives_table[i].bdrv, (64 * 1024),
  92                           FLASH_SIZE >> 16,
  93                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
  94                           0x555, 0x2aa);
  95     pflash_cfi02_register(0x0, phys_flash,
  96                           drives_table[i].bdrv, (64 * 1024),
  97                           FLASH_SIZE >> 16,
  98                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
  99                           0x555, 0x2aa);
 100     pic = etraxfs_pic_init(env, 0xb001c000);
 101     etraxfs_dmac = etraxfs_dmac_init(env, 0xb0000000, 10);
 102     for (i = 0; i < 10; i++) {
 103         /* On ETRAX, odd numbered channels are inputs.  */
 104         etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1);
 105     }
 106
 107     /* Add the two ethernet blocks.  */
 108     eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0xb0034000);
 109     if (nb_nics > 1)
 110         eth[1] = etraxfs_eth_init(&nd_table[1], env, pic->irq + 26, 0xb0036000);
 111
 112     /* The DMA Connector block is missing, hardwire things for now.  */
 113     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
 114     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
 115     if (eth[1]) {
 116         etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
 117         etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
 118     }
 119
 120     /* 2 timers.  */
 121     etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0xb001e000);
 122     etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0xb005e000);
 123
 124     for (i = 0; i < 4; i++) {
 125         if (serial_hds[i]) {
 126             etraxfs_ser_init(env, pic->irq + 0x14 + i,
 127                              serial_hds[i], 0xb0026000 + i * 0x2000);
 128         }
 129     }
 130
 131     if (kernel_filename) {
 132         uint64_t entry;
 133         /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
 134            devboard SDK.  */
 135         kernel_size = load_elf(kernel_filename, 0,
 136                                &entry, NULL, NULL);
 137         bootstrap_pc = entry;
 138         if (kernel_size < 0) {
 139             /* Takes a kimage from the axis devboard SDK.  */
 140             kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
 141             bootstrap_pc = 0x40004000;
 142             /* magic for boot.  */
 143             env->regs[8] = 0x56902387;
 144             env->regs[9] = 0x40004000 + kernel_size;
 145         }
 146     }
 147     env->pc = bootstrap_pc;
 148
 149     printf ("pc =%x\n", env->pc);
 150     printf ("ram size =%ld\n", ram_size);
 151 }
 152
 153 QEMUMachine bareetraxfs_machine = {
 154     "bareetraxfs",
 155     "Bare ETRAX FS board",
 156     bareetraxfs_init,
 157     0x8000000,
 158 };