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70abc059eb
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@3014 311d38ba-8fff-0310-9ca6-ca027cbcb966
53 lines
1.9 KiB
Diff
53 lines
1.9 KiB
Diff
This patch makes creation of the BBT optional for the s3c24x0 platform.
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It adds:
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- a new platform-independent NAND-wide flag NAND_DONT_CREATE_BBT
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- one user of this flag, namely s3c24x0
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Experimental.
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- Werner Almesberger <werner@openmoko.org>
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Index: u-boot/cpu/arm920t/s3c24x0/nand.c
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===================================================================
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--- u-boot.orig/cpu/arm920t/s3c24x0/nand.c 2007-02-16 23:53:29.000000000 +0100
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+++ u-boot/cpu/arm920t/s3c24x0/nand.c 2007-02-16 23:53:54.000000000 +0100
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@@ -169,7 +169,7 @@
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nand->eccmode = NAND_ECC_SOFT;
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#ifdef CONFIG_S3C2410_NAND_BBT
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- nand->options = NAND_USE_FLASH_BBT;
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+ nand->options = NAND_USE_FLASH_BBT | NAND_DONT_CREATE_BBT;
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#else
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nand->options = 0;
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#endif
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Index: u-boot/drivers/nand/nand_bbt.c
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===================================================================
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--- u-boot.orig/drivers/nand/nand_bbt.c 2007-02-16 23:53:36.000000000 +0100
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+++ u-boot/drivers/nand/nand_bbt.c 2007-02-16 23:53:54.000000000 +0100
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@@ -678,7 +678,8 @@
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}
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create:
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/* Create the bad block table by scanning the device ? */
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- if (!(td->options & NAND_BBT_CREATE))
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+ if (!(td->options & NAND_BBT_CREATE) ||
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+ (this->options & NAND_DONT_CREATE_BBT))
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continue;
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/* Create the table in memory by scanning the chip(s) */
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Index: u-boot/include/linux/mtd/nand.h
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===================================================================
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--- u-boot.orig/include/linux/mtd/nand.h 2007-02-16 23:53:08.000000000 +0100
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+++ u-boot/include/linux/mtd/nand.h 2007-02-16 23:53:54.000000000 +0100
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@@ -187,7 +187,8 @@
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* This can only work if we have the ecc bytes directly behind the
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* data bytes. Applies for DOC and AG-AND Renesas HW Reed Solomon generators */
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#define NAND_HWECC_SYNDROME 0x00020000
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-
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+/* Do not create an BBT if none is found. Overrides NAND_BBT_CREATE. */
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+#define NAND_DONT_CREATE_BBT 0x00040000
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/* Options set by nand scan */
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/* Nand scan has allocated oob_buf */
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