1: /*
    2:  * Arnewsh 5206 ColdFire system emulation.
    3:  *
    4:  * Copyright (c) 2007 CodeSourcery.
    5:  *
    6:  * This code is licenced under the GPL
    7:  */
    8: 
    9: #include "hw.h"
   10: #include "mcf.h"
   11: #include "sysemu.h"
   12: #include "boards.h"
   13: 
   14: #define KERNEL_LOAD_ADDR 0x10000
   15: #define AN5206_MBAR_ADDR 0x10000000
   16: #define AN5206_RAMBAR_ADDR 0x20000000
   17: 
   18: /* Stub functions for hardware that doesn't exist.  */
   19: void pic_info(void)
   20: {
   21: }
   22: 
   23: void irq_info(void)
   24: {
   25: }
   26: 
   27: void DMA_run (void)
   28: {
   29: }
   30: 
   31: /* Board init.  */
   32: 
   33: static void an5206_init(int ram_size, int vga_ram_size,
   34:                      const char *boot_device, DisplayState *ds,
   35:                      const char *kernel_filename, const char *kernel_cmdline,
   36:                      const char *initrd_filename, const char *cpu_model)
   37: {
   38:     CPUState *env;
   39:     int kernel_size;
   40:     uint64_t elf_entry;
   41:     target_ulong entry;
   42: 
   43:     if (!cpu_model)
   44:         cpu_model = "m5206";
   45:     env = cpu_init(cpu_model);
   46:     if (!env) {
   47:         cpu_abort(env, "Unable to find m68k CPU definition\n");
   48:     }
   49: 
   50:     /* Initialize CPU registers.  */
   51:     env->vbr = 0;
   52:     /* TODO: allow changing MBAR and RAMBAR.  */
   53:     env->mbar = AN5206_MBAR_ADDR | 1;
   54:     env->rambar0 = AN5206_RAMBAR_ADDR | 1;
   55: 
   56:     /* DRAM at address zero */
   57:     cpu_register_physical_memory(0, ram_size,
   58:         qemu_ram_alloc(ram_size) | IO_MEM_RAM);
   59: 
   60:     /* Internal SRAM.  */
   61:     cpu_register_physical_memory(AN5206_RAMBAR_ADDR, 512,
   62:         qemu_ram_alloc(512) | IO_MEM_RAM);
   63: 
   64:     mcf5206_init(AN5206_MBAR_ADDR, env);
   65: 
   66:     /* Load kernel.  */
   67:     if (!kernel_filename) {
   68:         fprintf(stderr, "Kernel image must be specified\n");
   69:         exit(1);
   70:     }
   71: 
   72:     kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL);
   73:     entry = elf_entry;
   74:     if (kernel_size < 0) {
   75:         kernel_size = load_uboot(kernel_filename, &entry, NULL);
   76:     }
   77:     if (kernel_size < 0) {
   78:         kernel_size = load_image(kernel_filename,
   79:                                  phys_ram_base + KERNEL_LOAD_ADDR);
   80:         entry = KERNEL_LOAD_ADDR;
   81:     }
   82:     if (kernel_size < 0) {
   83:         fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
   84:         exit(1);
   85:     }
   86: 
   87:     env->pc = entry;
   88: }
   89: 
   90: QEMUMachine an5206_machine = {
   91:     "an5206",
   92:     "Arnewsh 5206",
   93:     an5206_init,
   94: };