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Disable Dcache of 5744 will make CCP unsteadiness

Question asked by liu jinhang on Jan 7, 2016
Latest reply on Jan 26, 2016 by Lukas Zadrapa

When I use the EEPROM emulation code, I need disable the dcache of 5744, or the swapping will fail.

The function of disabling dcache see below:

 

void dcache_disable(void)

{ /* Body */

   register UINT32 val;

  

   E200CORE_SPR_GET(val,E200CORE_L1CSR0); /* L1CSR0 */

   val &= ~E200CORE_L1CSR0_CE;

   /* Memory Synchronize */

   E200CORE_SYNC();

   /* Instruction Synchronize */

   E200CORE_ISYNC();

   E200CORE_SPR_SET(E200CORE_L1CSR0,val);

   /* Instruction Synchronize */

   E200CORE_ISYNC();

} /* Endbody */

In this case,the EEPROM emulation works very well, but the CCP with VECTOR'S APE became be unsteadiness.

I want to know how to solve the contradiction between EEPROM emulation and CCP?

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