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 /* Init functions for different blocks.  */
  36 extern qemu_irq *etraxfs_pic_init(CPUState *env, target_phys_addr_t base);
  37 void etraxfs_timer_init(CPUState *env, qemu_irq *irqs,
  38                         target_phys_addr_t base);
  39 void *etraxfs_eth_init(NICInfo *nd, CPUState *env,
  40                        qemu_irq *irq, 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 void *etraxfs_dmac;
  48 static uint32_t bootstrap_pc;
  49
  50 static void main_cpu_reset(void *opaque)
  51 {
  52     CPUState *env = opaque;
  53     cpu_reset(env);
  54
  55     env->pregs[PR_CCS] &= ~I_FLAG;
  56     env->pc = bootstrap_pc;
  57 }
  58
  59 static
  60 void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size,
  61                        const char *boot_device, DisplayState *ds,
  62                        const char *kernel_filename, const char *kernel_cmdline,
  63                        const char *initrd_filename, const char *cpu_model)
  64 {
  65     CPUState *env;
  66     qemu_irq *pic;
  67     struct etraxfs_dma_client *eth[2] = {NULL, NULL};
  68     int kernel_size;
  69     int i;
  70     ram_addr_t phys_ram;
  71     ram_addr_t phys_flash;
  72     ram_addr_t phys_intmem;
  73
  74     /* init CPUs */
  75     if (cpu_model == NULL) {
  76         cpu_model = "crisv32";
  77     }
  78     env = cpu_init(cpu_model);
  79 /*    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); */
  80     qemu_register_reset(main_cpu_reset, env);
  81
  82     /* allocate RAM */
  83     phys_ram = qemu_ram_alloc(ram_size);
  84     cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
  85     /* Unached mapping.  */
  86     cpu_register_physical_memory(0xc0000000, ram_size, phys_ram | IO_MEM_RAM);
  87
  88     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
  89        internal memory. Cached and uncached mappings.  */
  90     phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
  91     cpu_register_physical_memory(0xb8000000, INTMEM_SIZE,
  92                                  phys_intmem | IO_MEM_RAM);
  93     cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
  94                                  phys_intmem | IO_MEM_RAM);
  95
  96
  97     phys_flash = qemu_ram_alloc(FLASH_SIZE);
  98     i = drive_get_index(IF_PFLASH, 0, 0);
  99     pflash_cfi02_register(0x80000000, phys_flash,
 100                           drives_table[i].bdrv, (64 * 1024),
 101                           FLASH_SIZE >> 16,
 102                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
 103                           0x555, 0x2aa);
 104     pflash_cfi02_register(0x0, phys_flash,
 105                           drives_table[i].bdrv, (64 * 1024),
 106                           FLASH_SIZE >> 16,
 107                           1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
 108                           0x555, 0x2aa);
 109     pic = etraxfs_pic_init(env, 0xb001c000);
 110     etraxfs_dmac = etraxfs_dmac_init(env, 0xb0000000, 10);
 111     for (i = 0; i < 10; i++) {
 112         /* On ETRAX, odd numbered channels are inputs.  */
 113         etraxfs_dmac_connect(etraxfs_dmac, i, pic + 7 + i, i & 1);
 114     }
 115
 116     /* Add the two ethernet blocks.  */
 117     eth[0] = etraxfs_eth_init(&nd_table[0], env, pic + 25, 0xb0034000);
 118     if (nb_nics > 1)
 119         eth[1] = etraxfs_eth_init(&nd_table[1], env, pic + 26, 0xb0036000);
 120
 121     /* The DMA Connector block is missing, hardwire things for now.  */
 122     etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
 123     etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
 124     if (eth[1]) {
 125         etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
 126         etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
 127     }
 128
 129     /* 2 timers.  */
 130     etraxfs_timer_init(env, pic + 0x1b, 0xb001e000);
 131     etraxfs_timer_init(env, pic + 0x1b, 0xb005e000);
 132
 133     for (i = 0; i < 4; i++) {
 134         if (serial_hds[i]) {
 135             etraxfs_ser_init(env, pic + 0x14 + i,
 136                              serial_hds[i], 0xb0026000 + i * 0x2000);
 137         }
 138     }
 139
 140     if (kernel_filename) {
 141 #if 1
 142         /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
 143            devboard SDK.  */
 144         kernel_size = load_elf(kernel_filename, 0,
 145                                &bootstrap_pc, NULL, NULL);
 146 #else
 147         /* Takes a kimage from the axis devboard SDK.  */
 148         kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
 149         bootstrap_pc = 0x40004000;
 150         /* magic for boot.  */
 151         env->regs[8] = 0x56902387;
 152         env->regs[9] = 0x40004000 + kernel_size;
 153 #endif
 154     }
 155     env->pc = bootstrap_pc;
 156
 157     printf ("pc =%x\n", env->pc);
 158     printf ("ram size =%ld\n", ram_size);
 159 }
 160
 161 void DMA_run(void)
 162 {
 163         etraxfs_dmac_run(etraxfs_dmac);
 164 }
 165
 166 QEMUMachine bareetraxfs_machine = {
 167     "bareetraxfs",
 168     "Bare ETRAX FS board",
 169     bareetraxfs_init,
 170     0x8000000,
 171 };