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 "boards.h"
   29: 
   30: extern FILE *logfile;
   31: 
   32: static void main_cpu_reset(void *opaque)
   33: {
   34:     CPUState *env = opaque;
   35:     cpu_reset(env);
   36: }
   37: 
   38: static uint32_t fs_mmio_readb (void *opaque, target_phys_addr_t addr)
   39: {
   40:         CPUState *env = opaque;
   41:         uint32_t r = 0;
   42:         printf ("%s %x pc=%x\n", __func__, addr, env->pc);
   43:         return r;
   44: }
   45: static uint32_t fs_mmio_readw (void *opaque, target_phys_addr_t addr)
   46: {
   47:         CPUState *env = opaque;
   48:         uint32_t r = 0;
   49:         printf ("%s %x pc=%x\n", __func__, addr, env->pc);
   50:         return r;
   51: }
   52: 
   53: static uint32_t fs_mmio_readl (void *opaque, target_phys_addr_t addr)
   54: {
   55:         CPUState *env = opaque;
   56:         uint32_t r = 0;
   57:         printf ("%s %x p=%x\n", __func__, addr, env->pc);
   58:         return r;
   59: }
   60: 
   61: static void
   62: fs_mmio_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
   63: {
   64:         CPUState *env = opaque;
   65:         printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc);
   66: }
   67: static void
   68: fs_mmio_writew (void *opaque, target_phys_addr_t addr, uint32_t value)
   69: {
   70:         CPUState *env = opaque;
   71:         printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc);
   72: }
   73: static void
   74: fs_mmio_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
   75: {
   76:         CPUState *env = opaque;
   77:         printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc);
   78: }
   79: 
   80: static CPUReadMemoryFunc *fs_mmio_read[] = {
   81:     &fs_mmio_readb,
   82:     &fs_mmio_readw,
   83:     &fs_mmio_readl,
   84: };
   85: 
   86: static CPUWriteMemoryFunc *fs_mmio_write[] = {
   87:     &fs_mmio_writeb,
   88:     &fs_mmio_writew,
   89:     &fs_mmio_writel,
   90: };
   91: 
   92: 
   93: /* Init functions for different blocks.  */
   94: extern void etraxfs_timer_init(CPUState *env, qemu_irq *irqs);
   95: extern void etraxfs_ser_init(CPUState *env, qemu_irq *irqs);
   96: 
   97: void etrax_ack_irq(CPUState *env, uint32_t mask)
   98: {
   99:         env->pending_interrupts &= ~mask;
  100: }
  101: 
  102: static void dummy_cpu_set_irq(void *opaque, int irq, int level)
  103: {
  104:         CPUState *env = opaque;
  105: 
  106:         /* Hmm, should this really be done here?  */
  107:         env->pending_interrupts |= 1 << irq;
  108:         cpu_interrupt(env, CPU_INTERRUPT_HARD);
  109: }
  110: 
  111: static
  112: void bareetraxfs_init (int ram_size, int vga_ram_size,
  113:                        const char *boot_device, DisplayState *ds,
  114:                        const char *kernel_filename, const char *kernel_cmdline,
  115:                        const char *initrd_filename, const char *cpu_model)
  116: {
  117:     CPUState *env;
  118:     qemu_irq *irqs;
  119:     int kernel_size;
  120:     int internal_regs;
  121: 
  122:     /* init CPUs */
  123:     if (cpu_model == NULL) {
  124:         cpu_model = "crisv32";
  125:     }
  126:     env = cpu_init(cpu_model);
  127: /*    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); */
  128:     qemu_register_reset(main_cpu_reset, env);
  129:     irqs = qemu_allocate_irqs(dummy_cpu_set_irq, env, 32);
  130: 
  131:     internal_regs = cpu_register_io_memory(0,
  132:                                            fs_mmio_read, fs_mmio_write, env);
  133:     /* 0xb0050000 is the last reg.  */
  134:     cpu_register_physical_memory (0xac000000, 0x4010000, internal_regs);
  135:     /* allocate RAM */
  136:     cpu_register_physical_memory(0x40000000, ram_size, IO_MEM_RAM);
  137: 
  138:     etraxfs_timer_init(env, irqs);
  139:     etraxfs_ser_init(env, irqs);
  140: 
  141:     kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000);
  142:     /* magic for boot.  */
  143:     env->regs[8] = 0x56902387;
  144:     env->regs[9] = 0x40004000 + kernel_size;
  145:     env->pc = 0x40004000;
  146: 
  147:     {
  148:        unsigned char *ptr = phys_ram_base + 0x4000;
  149:        int i;
  150:        for (i = 0; i < 8; i++)
  151:        {
  152:                 printf ("%2.2x ", ptr[i]);
  153:        }
  154:         printf("\n");
  155:     }
  156: 
  157:     printf ("pc =%x\n", env->pc);
  158:     printf ("ram size =%d\n", ram_size);
  159:     printf ("kernel name =%s\n", kernel_filename);
  160:     printf ("kernel size =%d\n", kernel_size);
  161:     printf ("cpu haltd =%d\n", env->halted);
  162: }
  163: 
  164: void DMA_run(void)
  165: {
  166: }
  167: 
  168: void pic_info()
  169: {
  170: }
  171: 
  172: void irq_info()
  173: {
  174: }
  175: 
  176: QEMUMachine bareetraxfs_machine = {
  177:     "bareetraxfs",
  178:     "Bare ETRAX FS board",
  179:     bareetraxfs_init,
  180: };