post/lib_ppc/fpu/fpu.c

   1 /*
   2  * Copyright (C) 2007
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * Author: Sergei Poselenov <sposelenov@emcraft.com>
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27
  28 /*
  29  * FPU test
  30  *
  31  * This test checks the arithmetic logic unit (ALU) of CPU.
  32  * It tests independently various groups of instructions using
  33  * run-time modification of the code to reduce the memory footprint.
  34  * For more details refer to post/cpu/ *.c files.
  35  */
  36
  37 #ifdef CONFIG_POST
  38
  39 #include <post.h>
  40
  41 #if CONFIG_POST & CFG_POST_FPU
  42
  43 #include <watchdog.h>
  44
  45 extern int fpu_status (void);
  46 extern void fpu_enable (void);
  47 extern void fpu_disable (void);
  48
  49 extern int fpu_post_test_math1 (void);
  50 extern int fpu_post_test_math2 (void);
  51 extern int fpu_post_test_math3 (void);
  52 extern int fpu_post_test_math4 (void);
  53 extern int fpu_post_test_math5 (void);
  54 extern int fpu_post_test_math6 (void);
  55 extern int fpu_post_test_math7 (void);
  56
  57 int fpu_post_test (int flags)
  58 {
  59         int fpu = fpu_status ();
  60
  61         int ret = 0;
  62
  63         WATCHDOG_RESET ();
  64
  65         if (!fpu)
  66                 fpu_enable ();
  67
  68         if (ret == 0)
  69                 ret = fpu_post_test_math1 ();
  70         if (ret == 0)
  71                 ret = fpu_post_test_math2 ();
  72         if (ret == 0)
  73                 ret = fpu_post_test_math3 ();
  74         if (ret == 0)
  75                 ret = fpu_post_test_math4 ();
  76         if (ret == 0)
  77                 ret = fpu_post_test_math5 ();
  78         if (ret == 0)
  79                 ret = fpu_post_test_math6 ();
  80         if (ret == 0)
  81                 ret = fpu_post_test_math7 ();
  82
  83         if (!fpu)
  84                 fpu_disable ();
  85
  86         WATCHDOG_RESET ();
  87
  88         return ret;
  89 }
  90
  91 #endif /* CONFIG_POST & CFG_POST_FPU */
  92 #endif /* CONFIG_POST */