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>

1 files changed, 20 insertions, 22 deletions

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 @@ int board_nand_init(struct nand_chip *nand)
 	/*
 	 * 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;