diff options
| author | William Juul <william.juul@datarespons.no> | 2007-10-31 13:53:06 +0100 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2008-08-12 11:31:15 -0500 |
| commit | cfa460adfdefcc30d104e1a9ee44994ee349bb7b (patch) | |
| tree | 59400f96629aec9c968b0e3251628302824f5d35 /board/netstar/nand.c | |
| parent | cd82919e6c8a73b363a26f34b734923844e52d1c (diff) | |
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>
Diffstat (limited to 'board/netstar/nand.c')
| -rw-r--r-- | board/netstar/nand.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/board/netstar/nand.c b/board/netstar/nand.c index b76d2a3324..302d78efef 100644 --- a/board/netstar/nand.c +++ b/board/netstar/nand.c @@ -21,6 +21,7 @@ */ #include <common.h> +#include <asm/io.h> #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; } |