#include "ppc_asm.h" .text .global _zimage_start _zimage_start: /* PPC errata 213: needed by Virtex-4 FX */ mfccr0 0 oris 0,0,0x50000000@h mtccr0 0 /* * Invalidate the data cache if the data cache is turned off. * - The 405 core does not invalidate the data cache on power-up * or reset but does turn off the data cache. We cannot assume * that the cache contents are valid. * - If the data cache is turned on this must have been done by * a bootloader and we assume that the cache contents are * valid. */ mfdccr r9 cmplwi r9,0 bne 2f lis r9,0 li r8,256 mtctr r8 1: dccci r0,r9 addi r9,r9,0x20 bdnz 1b 2: b _zimage_start_lib
