Hello,
I work on a MCF5235 coldfire and with "uClinux-dist-20101026". I try to use
the eTPU.
I have install the driver and dowload the application to use eTPU on
freescale website.
When I start the programme, there are an error : "Access Error Exception 12:
Error on data read".
So I modify the file :
"uClinux-dist/linux-2.6.x/arch/m68knommu/platform/523x/config.c".
I have modify "*gpacr" and all "*pacrx" to obtain the access to the
register.
uint8_t *gpacr = (uint8_t *) (MCF_IPSBAR + MCF523x_GPACR);
uint8_t *pacr1 = (uint8_t *) (MCF_IPSBAR + MCF523x_PACR1);
uint8_t *pacr4 = (uint8_t *) (MCF_IPSBAR + MCF523x_PACR4);
uint8_t *pacr7 = (uint8_t *) (MCF_IPSBAR + MCF523x_PACR7);
uint8_t *pacr8 = (uint8_t *) (MCF_IPSBAR + MCF523x_PACR8);
//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// *gpacr = 0x04;
// *pacr1 = 0x40; /* EIM required for Chip Select access */
// *pacr4 = 0x40; /* I2C */
// *pacr7 = 0x44; /* INTC0 & 1 handy for debug */
// *pacr8 = 0x40; /* FEC MAC */
//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*gpacr = 0x0C;
*pacr1 = 0x44; /* EIM required for Chip Select access */
*pacr4 = 0x44; /* I2C */
*pacr7 = 0x44; /* INTC0 & 1 handy for debug */
*pacr8 = 0x44; /* FEC MAC */
But this change did not solve the problem.
Can you help me please?
MENNETRIER Sébastien
FRANCE
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