[U-Boot-Users] Question on ECC SDRAM initialization in PPC4xx

[Jeff Mann]

In the ppc4xx cpu source files, I see that ECC for SDRAM is supported.
The code checks some settings
	((read_spd(11)==2) && (read_spd(6)==40) && (read_spd(14)==8)
and then enables ECC on the processor. 

*Does this automatically detect the presence of a SDRAM chips connected
in an ECC configuration?* Are additional software configuration settings
needed before this point to enable ECC?

SOURCE ./cpu/ppc4xx/spd_sdram.c

/* now check for ECC ability of module. We only support ECC
 *   on 32 bit wide devices with 8 bit ECC.
 */
if ((read_spd(11)==2) && (read_spd(6)==40) && (read_spd(14)==8)) {
	sdram0_ecccfg = 0xf << SDRAM0_ECCCFG_SHIFT;
	ecc_on = 1;
} else {
	sdram0_ecccfg = 0;
	ecc_on = 0;
}

Thanks,
Jeff