diff options
| author | stefanct <stefanct@2b7e53f0-3cfb-0310-b3e9-8179ed1497e1> | 2014-08-08 08:33:01 +0000 |
|---|---|---|
| committer | stefanct <stefanct@2b7e53f0-3cfb-0310-b3e9-8179ed1497e1> | 2014-08-08 08:33:01 +0000 |
| commit | f69f0c63b93e60c9c3bfd2cb6f88544479ce2918 (patch) | |
| tree | 64ff1e62b06ee89492c914e11c86b54ddf126b0c /en29lv640b.c | |
| parent | a38e1e165c826e968ef144dcc74da6a3358097a6 (diff) | |
| download | flashrom-f69f0c63b93e60c9c3bfd2cb6f88544479ce2918.tar.gz | |
Unify non-shifted and shifted JEDEC access.
Some Parallel bus chips have a 16-bit mode and an 8-bit mode. They use
normal JEDEC addresses for 16-bit mode and shifted addresses (by 1 bit)
for 8-bit mode. Some programmers can access them in 16-bit mode, but on
all flashrom-supported programmers so far, we access them in 8-bit mode.
This means we have to shift the addresses but apart from the addresses
we can share the code.
This patch makes this possible by checking the chip's FEATURE_ADDR_SHIFTED
flag in common JEDEC functions and applying the right addresses respectively.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
git-svn-id: https://code.coreboot.org/svn/flashrom/trunk@1840 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'en29lv640b.c')
| -rw-r--r-- | en29lv640b.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/en29lv640b.c b/en29lv640b.c index a274f62..3a5f611 100644 --- a/en29lv640b.c +++ b/en29lv640b.c @@ -85,51 +85,3 @@ int probe_en29lv640b(struct flashctx *flash) return 0; } - -static int erase_chip_shifted_jedec(struct flashctx *flash) -{ - chipaddr bios = flash->virtual_memory; - - chip_writeb(flash, 0xAA, bios + 0xAAA); - chip_writeb(flash, 0x55, bios + 0x555); - chip_writeb(flash, 0x80, bios + 0xAAA); - - chip_writeb(flash, 0xAA, bios + 0xAAA); - chip_writeb(flash, 0x55, bios + 0x555); - chip_writeb(flash, 0x10, bios + 0xAAA); - - programmer_delay(10); - toggle_ready_jedec(flash, bios); - - /* FIXME: Check the status register for errors. */ - return 0; -} - -int erase_block_shifted_jedec(struct flashctx *flash, unsigned int start, unsigned int len) -{ - chipaddr bios = flash->virtual_memory; - chipaddr dst = bios + start; - - chip_writeb(flash, 0xAA, bios + 0xAAA); - chip_writeb(flash, 0x55, bios + 0x555); - chip_writeb(flash, 0x80, bios + 0xAAA); - - chip_writeb(flash, 0xAA, bios + 0xAAA); - chip_writeb(flash, 0x55, bios + 0x555); - chip_writeb(flash, 0x30, dst); - - programmer_delay(10); - toggle_ready_jedec(flash, bios); - - /* FIXME: Check the status register for errors. */ - return 0; -} - -int erase_chip_block_shifted_jedec(struct flashctx *flash, unsigned int address, unsigned int blocklen) -{ - if ((address != 0) || (blocklen != flash->chip->total_size * 1024)) { - msg_cerr("%s called with incorrect arguments\n", __func__); - return -1; - } - return erase_chip_shifted_jedec(flash); -} |