Update MTD to that of Linux 2.6.22.1
A lot changed in the Linux MTD code, since it was last ported from
Linux to U-Boot. This patch takes U-Boot NAND support to the level
of Linux 2.6.22.1 and will enable support for very large NAND devices
(4KB pages) and ease the compatibility between U-Boot and Linux
filesystems.
This patch is tested on two custom boards with PPC and ARM
processors running YAFFS in U-Boot and Linux using gcc-4.1.2
cross compilers.
MAKEALL ppc/arm has some issues:
* DOC/OneNand/nand_spl is not building (I have not tried porting
these parts, and since I do not have any HW and I am not familiar
with this code/HW I think its best left to someone else.)
Except for the issues mentioned above, I have ported all drivers
necessary to run MAKEALL ppc/arm without errors and warnings. Many
drivers were trivial to port, but some were not so trivial. The
following drivers must be examined carefully and maybe rewritten to
some degree:
cpu/ppc4xx/ndfc.c
cpu/arm926ejs/davinci/nand.c
board/delta/nand.c
board/zylonite/nand.c
Signed-off-by: William Juul <william.juul@tandberg.com>
Signed-off-by: Stig Olsen <stig.olsen@tandberg.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/board/esd/common/esd405ep_nand.c b/board/esd/common/esd405ep_nand.c
index 7bf6847..4bf81ab 100644
--- a/board/esd/common/esd405ep_nand.c
+++ b/board/esd/common/esd405ep_nand.c
@@ -30,28 +30,26 @@
/*
* hardware specific access to control-lines
*/
-static void esd405ep_nand_hwcontrol(struct mtd_info *mtdinfo, int cmd)
+static void esd405ep_nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
- switch(cmd) {
- case NAND_CTL_SETCLE:
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CLE);
- break;
- case NAND_CTL_CLRCLE:
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CLE);
- break;
- case NAND_CTL_SETALE:
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_ALE);
- break;
- case NAND_CTL_CLRALE:
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_ALE);
- break;
- case NAND_CTL_SETNCE:
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CE);
- break;
- case NAND_CTL_CLRNCE:
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CE);
- break;
+ struct nand_chip *this = mtd->priv;
+ if (ctrl & NAND_CTRL_CHANGE) {
+ if ( ctrl & NAND_CLE )
+ out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CLE);
+ else
+ out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CLE);
+ if ( ctrl & NAND_ALE )
+ out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_ALE);
+ else
+ out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_ALE);
+ if ( ctrl & NAND_NCE )
+ out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CE);
+ else
+ out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CE);
}
+
+ if (cmd != NAND_CMD_NONE)
+ writeb(cmd, this->IO_ADDR_W);
}
@@ -77,9 +75,9 @@
/*
* Initialize nand_chip structure
*/
- nand->hwcontrol = esd405ep_nand_hwcontrol;
+ nand->cmd_ctrl = esd405ep_nand_hwcontrol;
nand->dev_ready = esd405ep_nand_device_ready;
- nand->eccmode = NAND_ECC_SOFT;
+ nand->ecc.mode = NAND_ECC_SOFT;
nand->chip_delay = NAND_BIG_DELAY_US;
nand->options = NAND_SAMSUNG_LP_OPTIONS;
return 0;