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author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-12-17 16:53:07 +0100 |
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committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-12-17 16:53:07 +0100 |
commit | cb5473205206c7f14cbb1e747f28ec75b48826e2 (patch) | |
tree | 8f4808d60917100b18a10b05230f7638a0a9bbcc /board/freescale/m5329evb/nand.c | |
parent | baf449fc5ff96f071bb0e3789fd3265f6d4fd9a0 (diff) | |
parent | 92c78a3bbcb2ce508b4bf1c4a1e0940406a024bb (diff) | |
download | u-boot-imx-cb5473205206c7f14cbb1e747f28ec75b48826e2.zip u-boot-imx-cb5473205206c7f14cbb1e747f28ec75b48826e2.tar.gz u-boot-imx-cb5473205206c7f14cbb1e747f28ec75b48826e2.tar.bz2 |
Merge branch 'fixes' into cleanups
Conflicts:
board/atmel/atngw100/atngw100.c
board/atmel/atstk1000/atstk1000.c
cpu/at32ap/at32ap700x/gpio.c
include/asm-avr32/arch-at32ap700x/clk.h
include/configs/atngw100.h
include/configs/atstk1002.h
include/configs/atstk1003.h
include/configs/atstk1004.h
include/configs/atstk1006.h
include/configs/favr-32-ezkit.h
include/configs/hammerhead.h
include/configs/mimc200.h
Diffstat (limited to 'board/freescale/m5329evb/nand.c')
-rw-r--r-- | board/freescale/m5329evb/nand.c | 57 |
1 files changed, 20 insertions, 37 deletions
diff --git a/board/freescale/m5329evb/nand.c b/board/freescale/m5329evb/nand.c index f84912e..cf27dda 100644 --- a/board/freescale/m5329evb/nand.c +++ b/board/freescale/m5329evb/nand.c @@ -36,56 +36,42 @@ DECLARE_GLOBAL_DATA_PTR; #include <linux/mtd/mtd.h> #define SET_CLE 0x10 -#define CLR_CLE ~SET_CLE #define SET_ALE 0x08 -#define CLR_ALE ~SET_ALE -static void nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) +static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl) { struct nand_chip *this = mtdinfo->priv; -/* volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS; TODO: handle wp */ - u32 nand_baseaddr = (u32) this->IO_ADDR_W; + volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR; if (ctrl & NAND_CTRL_CHANGE) { - if ( ctrl & NAND_CLE ) - nand_baseaddr |= SET_CLE; - else - nand_baseaddr &= CLR_CLE; - if ( ctrl & NAND_ALE ) - nand_baseaddr |= SET_ALE; - else - nand_baseaddr &= CLR_ALE; - } - this->IO_ADDR_W = (void __iomem *)(nand_baseaddr); + ulong IO_ADDR_W = (ulong) this->IO_ADDR_W; - if (cmd != NAND_CMD_NONE) - writeb(cmd, this->IO_ADDR_W); -} + IO_ADDR_W &= ~(SET_ALE | SET_CLE); + *nCE &= 0xFFFB; -static void nand_write_byte(struct mtd_info *mtdinfo, u_char byte) -{ - struct nand_chip *this = mtdinfo->priv; - *((volatile u8 *)(this->IO_ADDR_W)) = byte; -} + if (ctrl & NAND_NCE) + *nCE |= 0x0004; + if (ctrl & NAND_CLE) + IO_ADDR_W |= SET_CLE; + if (ctrl & NAND_ALE) + IO_ADDR_W |= SET_ALE; -static u8 nand_read_byte(struct mtd_info *mtdinfo) -{ - struct nand_chip *this = mtdinfo->priv; - return (u8) (*((volatile u8 *)this->IO_ADDR_R)); -} + this->IO_ADDR_W = (void *)IO_ADDR_W; + } -static int nand_dev_ready(struct mtd_info *mtdinfo) -{ - return 1; + if (cmd != NAND_CMD_NONE) + writeb(cmd, this->IO_ADDR_W); } int board_nand_init(struct nand_chip *nand) { volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; - *((volatile u16 *)CFG_LATCH_ADDR) |= 0x0004; - - /* set up pin configuration */ + /* + * set up pin configuration - enabled 2nd output buffer's signals + * (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc) + * to use nCE signal + */ gpio->par_timer &= ~GPIO_PAR_TIN3_TIN3; gpio->pddr_timer |= 0x08; gpio->ppd_timer |= 0x08; @@ -95,9 +81,6 @@ int board_nand_init(struct nand_chip *nand) nand->chip_delay = 50; nand->ecc.mode = NAND_ECC_SOFT; nand->cmd_ctrl = nand_hwcontrol; - nand->read_byte = nand_read_byte; - nand->write_byte = nand_write_byte; - nand->dev_ready = nand_dev_ready; return 0; } |