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authorHåvard Skinnemoen <hskinnemoen@atmel.com>2006-09-22 10:07:08 +0100
committerDavid Woodhouse <dwmw2@infradead.org>2006-09-22 10:07:08 +0100
commit187ef15268e638603dea55a91fdfa29feaed6d13 (patch)
treea3895b43f90ed87ae54e3b066468ac2c8fdf31ee /include/mtd
parente478bec0ba0a83a48a0f6982934b6de079e7e6b3 (diff)
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[MTD] Unlock NOR flash automatically where necessary
Introduce the MTD_STUPID_LOCK flag which indicates that the flash chip is always locked after power-up, so all sectors need to be unlocked before it is usable. If this flag is set, and the chip provides an unlock() operation, mtd_add_device will unlock the whole MTD device if it's writeable. This means that non-writeable partitions will stay locked. Set MTD_STUPID_LOCK in fixup_use_atmel_lock() so that these chips will work as expected. Signed-off-by: Håvard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'include/mtd')
-rw-r--r--include/mtd/mtd-abi.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index 1da3f7fa799..b0a67b7ffdc 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -34,6 +34,7 @@ struct mtd_oob_buf {
#define MTD_WRITEABLE 0x400 /* Device is writeable */
#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */
#define MTD_NO_ERASE 0x1000 /* No erase necessary */
+#define MTD_STUPID_LOCK 0x2000 /* Always locked after reset */
// Some common devices / combinations of capabilities
#define MTD_CAP_ROM 0