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Add support for SFDP (JESD216)

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Similar to modules using the opaque programmer framework (e.g. ICH Hardware
Sequencing) this uses a template struct flashchip element in flashchips.c with
a special probe function that fills the obtained values into that struct.

This allows yet unknown SPI chips to be supported (read, erase, write) almost
as if it was already added to flashchips.c.

Documentation used:
http://www.jedec.org/standards-documents/docs/jesd216 (2011-04)
W25Q32BV data sheet Revision F (2011-04-01)
EN25QH16 data sheet Revision F (2011-06-01)
MX25L6436E data sheet Revision 1.8 (2011-12-26)

Tested-by: David Hendricks <dhendrix@google.com>
on W25Q64CV + dediprog
Tested-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
on a 2010 MX25L6436E with preliminary (i.e. incorrect) SFDP implementation + serprog

Thanks also to Michael Karcher for his comments and preliminary review!

Corresponding to flashrom svn r1500.

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
2012-02-17 14:51:04 +00:00
parent ac427b22c4
commit ac1b4c8bd7
9 changed files with 467 additions and 12 deletions
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5
spi.h
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@ -40,6 +40,11 @@
#define JEDEC_REMS_OUTSIZE 0x04
#define JEDEC_REMS_INSIZE 0x02
/* Read Serial Flash Discoverable Parameters (SFDP) */
#define JEDEC_SFDP 0x5a
#define JEDEC_SFDP_OUTSIZE 0x05 /* 8b op, 24b addr, 8b dummy */
/* JEDEC_SFDP_INSIZE : any length */
/* Read Electronic Signature */
#define JEDEC_RES 0xab
#define JEDEC_RES_OUTSIZE 0x04