Revision 0fb79851

b/hw/arm/boot.c
228 228 
static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
229 229 
{
230 230 
    void *fdt = NULL;
231 
    char *filename;
232 231 
    int size, rc;
233 232 
    uint32_t acells, scells;
234 233 

  		





  235
  
  
    
    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename);


  		





  236
  
  
    
    if (!filename) {


  		





  237
  
  
    
        fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename);


  		





  238
  
  
    
        goto fail;


  		





  239
  
  
    
    }


  		





  
  234
  
    
    if (binfo->dtb_filename) {


  		





  
  235
  
    
        char *filename;


  		





  
  236
  
    
        filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename);


  		





  
  237
  
    
        if (!filename) {


  		





  
  238
  
    
            fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename);


  		





  
  239
  
    
            goto fail;


  		





  
  240
  
    
        }


  		





  240
  241
  
    

  		





  241
  
  
    
    fdt = load_device_tree(filename, &size);


  		





  242
  
  
    
    if (!fdt) {


  		





  243
  
  
    
        fprintf(stderr, "Couldn't open dtb file %s\n", filename);


  		





  
  242
  
    
        fdt = load_device_tree(filename, &size);


  		





  
  243
  
    
        if (!fdt) {


  		





  
  244
  
    
            fprintf(stderr, "Couldn't open dtb file %s\n", filename);


  		





  
  245
  
    
            g_free(filename);


  		





  
  246
  
    
            goto fail;


  		





  
  247
  
    
        }


  		





  244
  248
  
    
        g_free(filename);


  		





  245
  
  
    
        goto fail;


  		





  
  249
  
    
    } else if (binfo->get_dtb) {


  		





  
  250
  
    
        fdt = binfo->get_dtb(binfo, &size);


  		





  
  251
  
    
        if (!fdt) {


  		





  
  252
  
    
            fprintf(stderr, "Board was unable to create a dtb blob\n");


  		





  
  253
  
    
            goto fail;


  		





  
  254
  
    
        }


  		





  246
  255
  
    
    }


  		





  247
  
  
    
    g_free(filename);


  		





  248
  256
  
    

  		





  249
  257
  
    
    acells = qemu_devtree_getprop_cell(fdt, "/", "#address-cells");


  		





  250
  258
  
    
    scells = qemu_devtree_getprop_cell(fdt, "/", "#size-cells");


  		





  ......




  438
  446
  
    
        /* for device tree boot, we pass the DTB directly in r2. Otherwise


  		





  439
  447
  
    
         * we point to the kernel args.


  		





  440
  448
  
    
         */


  		





  441
  
  
    
        if (info->dtb_filename) {


  		





  
  449
  
    
        if (info->dtb_filename || info->get_dtb) {


  		





  442
  450
  
    
            /* Place the DTB after the initrd in memory. Note that some


  		





  443
  451
  
    
             * kernels will trash anything in the 4K page the initrd


  		





  444
  452
  
    
             * ends in, so make sure the DTB isn't caught up in that.


  		












  

    
      b/include/hw/arm/arm.h
    
  






  50
  50
  
    
                                 const struct arm_boot_info *info);


  		





  51
  51
  
    
    void (*secondary_cpu_reset_hook)(ARMCPU *cpu,


  		





  52
  52
  
    
                                     const struct arm_boot_info *info);


  		





  
  53
  
    
    /* if a board is able to create a dtb without a dtb file then it


  		





  
  54
  
    
     * sets get_dtb. This will only be used if no dtb file is provided


  		





  
  55
  
    
     * by the user. On success, sets *size to the length of the created


  		





  
  56
  
    
     * dtb, and returns a pointer to it. (The caller must free this memory


  		





  
  57
  
    
     * with g_free() when it has finished with it.) On failure, returns NULL.


  		





  
  58
  
    
     */


  		





  
  59
  
    
    void *(*get_dtb)(const struct arm_boot_info *info, int *size);


  		





  53
  60
  
    
    /* if a board needs to be able to modify a device tree provided by


  		





  54
  61
  
    
     * the user it should implement this hook.


  		





  55
  62
  
    
     */


  		












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