From cfa460adfdefcc30d104e1a9ee44994ee349bb7b Mon Sep 17 00:00:00 2001 From: William Juul Date: Wed, 31 Oct 2007 13:53:06 +0100 Subject: 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 Signed-off-by: Stig Olsen Signed-off-by: Scott Wood --- board/netstar/nand.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'board/netstar') diff --git a/board/netstar/nand.c b/board/netstar/nand.c index b76d2a332..302d78efe 100644 --- a/board/netstar/nand.c +++ b/board/netstar/nand.c @@ -21,6 +21,7 @@ */ #include +#include #if defined(CONFIG_CMD_NAND) @@ -32,24 +33,29 @@ #define MASK_CLE 0x02 #define MASK_ALE 0x04 -static void netstar_nand_hwcontrol(struct mtd_info *mtd, int cmd) +static void netstar_nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) { struct nand_chip *this = mtd->priv; ulong IO_ADDR_W = (ulong) this->IO_ADDR_W; IO_ADDR_W &= ~(MASK_ALE|MASK_CLE); - switch (cmd) { - case NAND_CTL_SETCLE: IO_ADDR_W |= MASK_CLE; break; - case NAND_CTL_SETALE: IO_ADDR_W |= MASK_ALE; break; + if (ctrl & NAND_CTRL_CHANGE) { + if ( ctrl & NAND_CLE ) + IO_ADDR_W |= MASK_CLE; + if ( ctrl & NAND_ALE ) + IO_ADDR_W |= MASK_ALE; } - this->IO_ADDR_W = (void *) IO_ADDR_W; + this->IO_ADDR_W = (void __iomem *) IO_ADDR_W; + + if (cmd != NAND_CMD_NONE) + writeb(cmd, this->IO_ADDR_W); } int board_nand_init(struct nand_chip *nand) { nand->options = NAND_SAMSUNG_LP_OPTIONS; - nand->eccmode = NAND_ECC_SOFT; - nand->hwcontrol = netstar_nand_hwcontrol; + nand->ecc.mode = NAND_ECC_SOFT; + nand->cmd_ctrl = netstar_nand_hwcontrol; nand->chip_delay = 400; return 0; } -- cgit v1.2.3