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#include "lib9.h"
#include "logfs.h"
#include "nandfs.h"
#include "nandecc.h"
#include "local.h"
char *
nandfsupdatepage(Nandfs *nandfs, void *buf, ulong path, uchar tag, long block, int page)
{
uchar tbuf[NandfsFullSize];
ulong ecc1, ecc2;
ulong rawoffset;
NandfsAuxiliary *hdr;
rawoffset = (nandfs->baseblock + block) * nandfs->rawblocksize + page * NandfsFullSize;
memmove(tbuf, buf, NandfsPageSize);
ecc1 = nandecc(tbuf);
ecc2 = nandecc(tbuf + 256);
hdr = (NandfsAuxiliary *)(tbuf + NandfsPageSize);
memset(hdr, 0xff, sizeof(*hdr));
hdr->tag = tag;
if (path < NandfsPathMask) {
ulong tmp = _nandfshamming31_26calc(path << 6) | (1 << 5);
putbig4(hdr->parth, tmp);
}
putlittle3(hdr->ecc1, ecc1);
putlittle3(hdr->ecc2, ecc2);
return (*nandfs->write)(nandfs->magic, tbuf, sizeof(tbuf), rawoffset);
}
char *
nandfswritepage(Nandfs *nandfs, void *buf, long block, int page)
{
ulong writepath = nandfsgetpath(nandfs, block);
uchar writetag = nandfsgettag(nandfs, block);
//print("block %ld writepath 0x%.8lux writetag 0x%.2ux\n", block, writepath, writetag);
return nandfsupdatepage(nandfs, buf, writepath, writetag, block, page);
}
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