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Introduce helpers.c

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Move some suitable functions there, add it to the Makefile, but leave the
declarations in flash.h for now.

Corresponding to flashrom svn r1819.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Stefan Tauner
2014-06-12 00:04:32 +00:00
parent a60d408a78
commit 6ad6e01e9b
5 changed files with 81 additions and 52 deletions
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11
at45db.c
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@ -215,17 +215,6 @@ int probe_spi_at45db(struct flashctx *flash)
return 1;
}
/* Returns the minimum number of bits needed to represent the given address.
* FIXME: use mind-blowing implementation.
* FIXME: move to utility module. */
static uint32_t address_to_bits(uint32_t addr)
{
unsigned int lzb = 0;
while (((1 << (31 - lzb)) & ~addr) != 0)
lzb++;
return 32 - lzb;
}
/* In case of non-power-of-two page sizes we need to convert the address flashrom uses to the address the
* DataFlash chips use. The latter uses a segmented address space where the page address is encoded in the
* more significant bits and the offset within the page is encoded in the less significant bits. The exact