11630 remove checks for 64-bit capable hardware

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  * Copyright 2019 Peter Tribbble.
   */
  
  #include <sys/param.h>
  #include <sys/fcntl.h>
  #include <sys/obpdefs.h>
*** 451,466 ****
                  return;
          }
          prom_panic("redirect_boot_path: mangled boot path!");
  }
  
- #define PROM_VERS_MAX_LEN       64
- 
  void
  system_check(void)
  {
-         char buf[PROM_VERS_MAX_LEN];
          pnode_t n;
          char    arch[128];
          size_t  len;
          bootplat_defaults_t *plat_defaults;
  
--- 452,464 ----
*** 481,496 ****
                  }
          } else {
                  dprintf("device_type: no such property, len=%d\n", (int)len);
          }
  
-         if (!is_sun4v && cpu_is_ultrasparc_1()) {
-                 printf("UltraSPARC I processors are not supported by this "
-                     "release of Solaris.\n");
-                 prom_exit_to_mon();
-         }
- 
          /*
           * Set up defaults per platform
           */
          plat_defaults = (is_sun4v) ?
              &sun4v_plat_defaults : &sun4u_plat_defaults;
--- 479,488 ----
*** 500,516 ****
          vac = plat_defaults->plat_defaults_vac;
  
          dprintf("default_name: %s\n", default_name);
          dprintf("default_path: %s\n", default_path);
          dprintf("vac: %d\n", vac);
- 
-         if (prom_version_check(buf, PROM_VERS_MAX_LEN, NULL) != PROM_VER64_OK) {
-                 printf("The firmware on this system does not support the 64-bit"
-                     " OS.\n\tPlease upgrade to at least the following version:"
-                     "\n\n\t%s\n", buf);
-                 prom_exit_to_mon();
-         }
  }
  
  /*
   * Reads in the standalone (client) program and jumps to it.  If this
   * attempt fails, prints "boot failed" and returns to its caller.
--- 492,501 ----