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ichspi: try harder to conform to address restrictions

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ICH SPI can enforce address restrictions for all accesses which take an
address (well, it could if the chipset implementation was not broken).
Since exploiting the broken implementation is harder than conforming
to the address restrictions wherever possible, conform to the address
restrictions instead. This patch eliminates a lot of transaction errors
people were seeing on chip probe.

Corresponding to flashrom svn r1016.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
This commit is contained in:
Carl-Daniel Hailfinger
2010-05-28 15:53:08 +00:00
parent 4073c09556
commit 80f3d05e73
4 changed files with 71 additions and 7 deletions
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2
flash.h
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@ -663,6 +663,8 @@ int default_spi_send_multicommand(struct spi_command *cmds);
uint32_t spi_get_valid_read_addr(void);
/* ichspi.c */
extern int ichspi_lock;
extern uint32_t ichspi_bbar;
int ich_init_opcodes(void);
int ich_spi_send_command(unsigned int writecnt, unsigned int readcnt,
const unsigned char *writearr, unsigned char *readarr);