diff options
| author |   Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
|---|---|---|
| committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
| commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
| tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/board/quad100hd/nand.c | |
| parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) | |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/board/quad100hd/nand.c')
| -rw-r--r-- | qemu/roms/u-boot/board/quad100hd/nand.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/quad100hd/nand.c b/qemu/roms/u-boot/board/quad100hd/nand.c new file mode 100644 index 000000000..47bbb6b26 --- /dev/null +++ b/qemu/roms/u-boot/board/quad100hd/nand.c @@ -0,0 +1,53 @@ +/* + * (C) Copyright 2008 + * Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <config.h> +#if defined(CONFIG_CMD_NAND) +#include <asm/ppc4xx-gpio.h> +#include <asm/io.h> +#include <nand.h> + +/* + * hardware specific access to control-lines + */ +static void quad100hd_hwcontrol(struct mtd_info *mtd, + int cmd, unsigned int ctrl) +{ + struct nand_chip *this = mtd->priv; + + if (ctrl & NAND_CTRL_CHANGE) { + gpio_write_bit(CONFIG_SYS_NAND_CLE, !!(ctrl & NAND_CLE)); + gpio_write_bit(CONFIG_SYS_NAND_ALE, !!(ctrl & NAND_ALE)); + gpio_write_bit(CONFIG_SYS_NAND_CE, !(ctrl & NAND_NCE)); + } + + if (cmd != NAND_CMD_NONE) + writeb(cmd, this->IO_ADDR_W); +} + +static int quad100hd_nand_ready(struct mtd_info *mtd) +{ + return gpio_read_in_bit(CONFIG_SYS_NAND_RDY); +} + +/* + * Main initialization routine + */ +int board_nand_init(struct nand_chip *nand) +{ + /* Set address of hardware control function */ + nand->cmd_ctrl = quad100hd_hwcontrol; + nand->dev_ready = quad100hd_nand_ready; + nand->ecc.mode = NAND_ECC_SOFT; + /* 15 us command delay time */ + nand->chip_delay = 20; + + /* Return happy */ + return 0; +} +#endif /* CONFIG_CMD_NAND */ |