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authorWilliam Juul <william.juul@datarespons.no>2007-10-31 13:53:06 +0100
committerScott Wood <scottwood@freescale.com>2008-08-12 11:31:15 -0500
commitcfa460adfdefcc30d104e1a9ee44994ee349bb7b (patch)
tree59400f96629aec9c968b0e3251628302824f5d35 /board/tqc
parentcd82919e6c8a73b363a26f34b734923844e52d1c (diff)
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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/tqc')
-rw-r--r--board/tqc/tqm8272/tqm8272.c34
1 files changed, 16 insertions, 18 deletions
diff --git a/board/tqc/tqm8272/tqm8272.c b/board/tqc/tqm8272/tqm8272.c
index cde0296..5148f3d 100644
--- a/board/tqc/tqm8272/tqm8272.c
+++ b/board/tqc/tqm8272/tqm8272.c
@@ -1068,24 +1068,22 @@ int update_flash_size (int flash_size)
static u8 hwctl = 0;
-static void upmnand_hwcontrol(struct mtd_info *mtdinfo, int cmd)
+static void upmnand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
- switch (cmd) {
- case NAND_CTL_SETCLE:
- hwctl |= 0x1;
- break;
- case NAND_CTL_CLRCLE:
- hwctl &= ~0x1;
- break;
-
- case NAND_CTL_SETALE:
- hwctl |= 0x2;
- break;
-
- case NAND_CTL_CLRALE:
- hwctl &= ~0x2;
- break;
+ struct nand_chip *this = mtd->priv;
+
+ if (ctrl & NAND_CTRL_CHANGE) {
+ if ( ctrl & NAND_CLE )
+ hwctl |= 0x1;
+ else
+ hwctl &= ~0x1;
+ if ( ctrl & NAND_ALE )
+ hwctl |= 0x2;
+ else
+ hwctl &= ~0x2;
}
+ if (cmd != NAND_CMD_NONE)
+ writeb(cmd, this->IO_ADDR_W);
}
static void upmnand_write_byte(struct mtd_info *mtdinfo, u_char byte)
@@ -1188,9 +1186,9 @@ int board_nand_init(struct nand_chip *nand)
memctl->memc_br3 = CFG_NAND_BR;
memctl->memc_mbmr = (MxMR_OP_NORM);
- nand->eccmode = NAND_ECC_SOFT;
+ nand->ecc.mode = NAND_ECC_SOFT;
- nand->hwcontrol = upmnand_hwcontrol;
+ nand->cmd_ctrl = upmnand_hwcontrol;
nand->read_byte = upmnand_read_byte;
nand->write_byte = upmnand_write_byte;
nand->dev_ready = tqm8272_dev_ready;