post/lib_powerpc/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  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11
  12 /*
  13  * FPU test
  14  *
  15  * This test checks the arithmetic logic unit (ALU) of CPU.
  16  * It tests independently various groups of instructions using
  17  * run-time modification of the code to reduce the memory footprint.
  18  * For more details refer to post/cpu/ *.c files.
  19  */
  20
  21 #include <post.h>
  22
  23 GNU_FPOST_ATTR
  24
  25 #if CONFIG_POST & CONFIG_SYS_POST_FPU
  26
  27 #include <watchdog.h>
  28
  29 extern int fpu_status (void);
  30 extern void fpu_enable (void);
  31 extern void fpu_disable (void);
  32
  33 extern int fpu_post_test_math1 (void);
  34 extern int fpu_post_test_math2 (void);
  35 extern int fpu_post_test_math3 (void);
  36 extern int fpu_post_test_math4 (void);
  37 extern int fpu_post_test_math5 (void);
  38 extern int fpu_post_test_math6 (void);
  39 extern int fpu_post_test_math7 (void);
  40
  41 int fpu_post_test (int flags)
  42 {
  43         int fpu = fpu_status ();
  44
  45         int ret = 0;
  46
  47         WATCHDOG_RESET ();
  48
  49         if (!fpu)
  50                 fpu_enable ();
  51
  52         if (ret == 0)
  53                 ret = fpu_post_test_math1 ();
  54         if (ret == 0)
  55                 ret = fpu_post_test_math2 ();
  56         if (ret == 0)
  57                 ret = fpu_post_test_math3 ();
  58         if (ret == 0)
  59                 ret = fpu_post_test_math4 ();
  60         if (ret == 0)
  61                 ret = fpu_post_test_math5 ();
  62         if (ret == 0)
  63                 ret = fpu_post_test_math6 ();
  64         if (ret == 0)
  65                 ret = fpu_post_test_math7 ();
  66
  67         if (!fpu)
  68                 fpu_disable ();
  69
  70         WATCHDOG_RESET ();
  71
  72         return ret;
  73 }
  74
  75 #endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */