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post/lib_powerpc/cmpi.c 1.8 KB
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ad5bb451a   Wolfgang Denk   Restructure POST ... 
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  /*
   * (C) Copyright 2002
   * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   *
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   * SPDX-License-Identifier:	GPL-2.0+
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   */
  
  #include <common.h>
  
  /*
   * CPU test
   * Integer compare instructions:	cmpwi, cmplwi
   *
   * To verify these instructions the test runs them with
   * different combinations of operands, reads the condition
   * register value and compares it with the expected one.
   * The test contains a pre-built table
   * containing the description of each test case: the instruction,
   * the values of the operands, the condition field to save
   * the result in and the expected result.
   */
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  #include <post.h>
  #include "cpu_asm.h"
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  #if CONFIG_POST & CONFIG_SYS_POST_CPU
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  extern void cpu_post_exec_11 (ulong *code, ulong *res, ulong op1);
  
  static struct cpu_post_cmpi_s
  {
      ulong cmd;
      ulong op1;
      ushort op2;
      ulong cr;
      ulong res;
  } cpu_post_cmpi_table[] =
  {
      {
  	OP_CMPWI,
  	123,
  	123,
  	2,
  	0x02
      },
      {
  	OP_CMPWI,
  	123,
  	133,
  	3,
  	0x08
      },
      {
  	OP_CMPWI,
  	123,
  	-133,
  	4,
  	0x04
      },
      {
  	OP_CMPLWI,
  	123,
  	123,
  	2,
  	0x02
      },
      {
  	OP_CMPLWI,
  	123,
  	-133,
  	3,
  	0x08
      },
      {
  	OP_CMPLWI,
  	123,
  	113,
  	4,
  	0x04
      },
  };
d2397817f   Mike Frysinger   post: use ARRAY_SIZE 
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  static unsigned int cpu_post_cmpi_size = ARRAY_SIZE(cpu_post_cmpi_table);
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  int cpu_post_test_cmpi (void)
  {
      int ret = 0;
      unsigned int i;
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      int flag = disable_interrupts();
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      for (i = 0; i < cpu_post_cmpi_size && ret == 0; i++)
      {
  	struct cpu_post_cmpi_s *test = cpu_post_cmpi_table + i;
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  	unsigned long code[] =
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  	{
  	    ASM_1IC(test->cmd, test->cr, 3, test->op2),
  	    ASM_MFCR(3),
  	    ASM_BLR
  	};
  	ulong res;
  
  	cpu_post_exec_11 (code, & res, test->op1);
  
  	ret = ((res >> (28 - 4 * test->cr)) & 0xe) == test->res ? 0 : -1;
  
  	if (ret != 0)
  	{
  	    post_log ("Error at cmpi test %d !
  ", i);
  	}
      }
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      if (flag)
  	enable_interrupts();
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      return ret;
  }
  
  #endif