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URL https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk

Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [cmds/] [cpu.c] - Diff between revs 246 and 406

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Rev 246 Rev 406
Line 5... Line 5...
int ic_enable_cmd (int argc, char *argv[])
int ic_enable_cmd (int argc, char *argv[])
{
{
  unsigned long addr;
  unsigned long addr;
  unsigned long sr;
  unsigned long sr;
 
 
  if (argc) return -1;
        if (argc)
 
                return -1;
  /* Invalidate IC */
  /* Invalidate IC */
  for (addr = 0; addr < 8192; addr += 16)
  for (addr = 0; addr < 8192; addr += 16)
    asm("l.mtspr r0,%0,%1": : "r" (addr), "i" (SPR_ICBIR));
    asm("l.mtspr r0,%0,%1": : "r" (addr), "i" (SPR_ICBIR));
 
 
  /* Enable IC */
  /* Enable IC */
Line 25... Line 26...
 
 
int ic_disable_cmd (int argc, char *argv[])
int ic_disable_cmd (int argc, char *argv[])
{
{
  unsigned long sr;
  unsigned long sr;
 
 
  if (argc) return -1;
        if (argc)
 
                return -1;
  /* Disable IC */
  /* Disable IC */
  asm("l.mfspr %0,r0,%1": "=r" (sr) : "i" (SPR_SR));
  asm("l.mfspr %0,r0,%1": "=r" (sr) : "i" (SPR_SR));
  sr &= ~SPR_SR_ICE;
  sr &= ~SPR_SR_ICE;
  asm("l.mtspr r0,%0,%1": : "r" (sr), "i" (SPR_SR));
  asm("l.mtspr r0,%0,%1": : "r" (sr), "i" (SPR_SR));
  asm("l.nop");
  asm("l.nop");
Line 42... Line 44...
int dc_enable_cmd (int argc, char *argv[])
int dc_enable_cmd (int argc, char *argv[])
{
{
  unsigned long addr;
  unsigned long addr;
  unsigned long sr;
  unsigned long sr;
 
 
  if (argc) return -1;
        if (argc)
 
                return -1;
  /* Invalidate DC */
  /* Invalidate DC */
  for (addr = 0; addr < 8192; addr += 16)
  for (addr = 0; addr < 8192; addr += 16)
    asm("l.mtspr r0,%0,%1": : "r" (addr), "i" (SPR_DCBIR));
    asm("l.mtspr r0,%0,%1": : "r" (addr), "i" (SPR_DCBIR));
 
 
  /* Enable DC */
  /* Enable DC */
Line 61... Line 64...
}
}
 
 
int dc_disable_cmd (int argc, char *argv[])
int dc_disable_cmd (int argc, char *argv[])
{
{
 
 
  if (argc) return -1;
        if (argc)
 
                return -1;
 
 
  unsigned long sr = mfspr(SPR_SR);
  unsigned long sr = mfspr(SPR_SR);
 
 
  // If it's enabled and write back is on, we'd better flush it first
  // If it's enabled and write back is on, we'd better flush it first
  // (CWS=1 is write back)
  // (CWS=1 is write back)
Line 94... Line 98...
  if (argc ==   1) {
  if (argc ==   1) {
    addr = strtoul (argv[0], 0, 0);
    addr = strtoul (argv[0], 0, 0);
    /* Read SPR */
    /* Read SPR */
    asm("l.mfspr %0,%1,0": "=r" (val) : "r" (addr));
    asm("l.mfspr %0,%1,0": "=r" (val) : "r" (addr));
    printf ("\nSPR %04lx: %08lx", addr, val);
    printf ("\nSPR %04lx: %08lx", addr, val);
  } else return -1;
        } else
 
                return -1;
        return 0;
        return 0;
}
}
 
 
int mtspr_cmd (int argc, char *argv[])
int mtspr_cmd (int argc, char *argv[])
{
{
Line 108... Line 113...
    val = strtoul (argv[1], 0, 0);
    val = strtoul (argv[1], 0, 0);
    /* Write SPR */
    /* Write SPR */
    asm("l.mtspr %0,%1,0": : "r" (addr), "r" (val));
    asm("l.mtspr %0,%1,0": : "r" (addr), "r" (val));
    asm("l.mfspr %0,%1,0": "=r" (val) : "r" (addr));
    asm("l.mfspr %0,%1,0": "=r" (val) : "r" (addr));
    printf ("\nSPR %04lx: %08lx", addr, val);
    printf ("\nSPR %04lx: %08lx", addr, val);
  } else return -1;
        } else
 
                return -1;
        return 0;
        return 0;
}
}
 
 
void module_cpu_init (void)
void module_cpu_init (void)
{
{
  register_command ("ic_enable", "", "enable instruction cache", ic_enable_cmd);
        register_command("ic_enable", "", "enable instruction cache",
  register_command ("ic_disable", "", "disable instruction cache", ic_disable_cmd);
                         ic_enable_cmd);
 
        register_command("ic_disable", "", "disable instruction cache",
 
                         ic_disable_cmd);
  register_command ("dc_enable", "", "enable data cache", dc_enable_cmd);
  register_command ("dc_enable", "", "enable data cache", dc_enable_cmd);
  register_command ("dc_disable", "", "disable data cache", dc_disable_cmd);
        register_command("dc_disable", "", "disable data cache",
 
                         dc_disable_cmd);
  register_command ("mfspr", "<spr_addr>", "show SPR", mfspr_cmd);
  register_command ("mfspr", "<spr_addr>", "show SPR", mfspr_cmd);
  register_command ("mtspr", "<spr_addr> <value>", "set SPR", mtspr_cmd);
  register_command ("mtspr", "<spr_addr> <value>", "set SPR", mtspr_cmd);
}
}
 
 
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