u-boot/drivers/mtd/nand/kirkwood_nand.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

91 lines
1.9 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2009
* Marvell Semiconductor <www.marvell.com>
* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/soc.h>
#include <asm/arch/mpp.h>
#include <nand.h>
/* NAND Flash Soc registers */
struct kwnandf_registers {
u32 rd_params; /* 0x10418 */
u32 wr_param; /* 0x1041c */
u8 pad[0x10470 - 0x1041c - 4];
u32 ctrl; /* 0x10470 */
};
static struct kwnandf_registers *nf_reg =
(struct kwnandf_registers *)KW_NANDF_BASE;
static u32 nand_mpp_backup[9] = { 0 };
/*
* hardware specific access to control-lines/bits
*/
#define NAND_ACTCEBOOT_BIT 0x02
static void kw_nand_hwcontrol(struct mtd_info *mtd, int cmd,
unsigned int ctrl)
{
struct nand_chip *nc = mtd_to_nand(mtd);
u32 offs;
if (cmd == NAND_CMD_NONE)
return;
if (ctrl & NAND_CLE)
offs = (1 << 0); /* Commands with A[1:0] == 01 */
else if (ctrl & NAND_ALE)
offs = (1 << 1); /* Addresses with A[1:0] == 10 */
else
return;
writeb(cmd, nc->IO_ADDR_W + offs);
}
void kw_nand_select_chip(struct mtd_info *mtd, int chip)
{
u32 data;
static const u32 nand_config[] = {
MPP0_NF_IO2,
MPP1_NF_IO3,
MPP2_NF_IO4,
MPP3_NF_IO5,
MPP4_NF_IO6,
MPP5_NF_IO7,
MPP18_NF_IO0,
MPP19_NF_IO1,
0
};
if (chip >= 0)
kirkwood_mpp_conf(nand_config, nand_mpp_backup);
else
kirkwood_mpp_conf(nand_mpp_backup, NULL);
data = readl(&nf_reg->ctrl);
data |= NAND_ACTCEBOOT_BIT;
writel(data, &nf_reg->ctrl);
}
int board_nand_init(struct nand_chip *nand)
{
nand->options = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING;
#if defined(CONFIG_SYS_NAND_NO_SUBPAGE_WRITE)
nand->options |= NAND_NO_SUBPAGE_WRITE;
#endif
#if defined(CONFIG_NAND_ECC_BCH)
nand->ecc.mode = NAND_ECC_SOFT_BCH;
#else
nand->ecc.mode = NAND_ECC_SOFT;
#endif
nand->cmd_ctrl = kw_nand_hwcontrol;
nand->chip_delay = 40;
nand->select_chip = kw_nand_select_chip;
return 0;
}