switch on/off DCache PCache during the runtime

[User22771]

Hi,

is there any sample code for this? I'm not able to make it or reconfigure the size with WinIdea for TC36x

[NeMa_4793301]

DCON0 and PCON0 are ENDINIT protected, so you have to disable CPU ENDINIT protection to change them. Here's how the iLLD does it:

static void __Core0_start(void)
{
    unsigned short cpuWdtPassword    = Ifx_Ssw_getCpuWatchdogPasswordInline(&MODULE_SCU.WDTCPU[0]);

    Ifx_Ssw_clearCpuEndinitInline(&MODULE_SCU.WDTCPU[0], cpuWdtPassword);

    /* Enable/ Disable the caches depending on the configuration. At this point cache are invalidated */
    {
        Ifx_CPU_PCON0 pcon0;
        pcon0.U       = 0;
        pcon0.B.PCBYP = IFX_CFG_SSW_ENABLE_TRICORE0_PCACHE ? 0 : 1; /* depending on the enable bypass bit is reset/set */
        Ifx_Ssw_MTCR(CPU_PCON0, pcon0.U);
        Ifx_Ssw_ISYNC();
    }

    {
        Ifx_CPU_DCON0 dcon0;
        dcon0.U       = 0;
        dcon0.B.DCBYP = IFX_CFG_SSW_ENABLE_TRICORE0_DCACHE ? 0 : 1; /* depending on the enable bypass bit is reset/set */
        Ifx_Ssw_MTCR(CPU_DCON0, dcon0.U);
        Ifx_Ssw_ISYNC();
    }

[User22771]

Hi,

thanks a lot it works at least for configuring the PCon0/DCon0. But to visit the area reserved for DCache , eg for TC365 it should be 7003 C000H - 7003 FFFFH, i have also to set the CPU0_DCMAP?

Best Regards