Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 2 | /* |
| 3 | * (C) Copyright 2000-2003 |
| 4 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 5 | * |
Alison Wang | 35d23df | 2012-03-26 21:49:05 +0000 | [diff] [blame] | 6 | * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc. |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 7 | * TsiChung Liew (Tsi-Chung.Liew@freescale.com) |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <config.h> |
| 11 | #include <common.h> |
| 12 | #include <asm/io.h> |
| 13 | #include <asm/immap.h> |
| 14 | |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 15 | #if defined(CONFIG_CMD_NAND) |
| 16 | #include <nand.h> |
| 17 | #include <linux/mtd/mtd.h> |
Tom Rini | 3bde7e2 | 2021-09-22 14:50:35 -0400 | [diff] [blame] | 18 | #include <linux/mtd/rawnand.h> |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 19 | |
| 20 | #define SET_CLE 0x10 |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 21 | #define SET_ALE 0x08 |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 22 | |
Scott Wood | fdda946 | 2008-08-13 17:53:48 -0500 | [diff] [blame] | 23 | static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl) |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 24 | { |
Scott Wood | 17fed14 | 2016-05-30 13:57:56 -0500 | [diff] [blame] | 25 | struct nand_chip *this = mtd_to_nand(mtdinfo); |
TsiChung Liew | 476f6bc | 2008-10-24 12:59:12 +0000 | [diff] [blame] | 26 | volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR; |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 27 | |
Scott Wood | fdda946 | 2008-08-13 17:53:48 -0500 | [diff] [blame] | 28 | if (ctrl & NAND_CTRL_CHANGE) { |
| 29 | ulong IO_ADDR_W = (ulong) this->IO_ADDR_W; |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 30 | |
TsiChung Liew | 476f6bc | 2008-10-24 12:59:12 +0000 | [diff] [blame] | 31 | IO_ADDR_W &= ~(SET_ALE | SET_CLE); |
TsiChung Liew | 476f6bc | 2008-10-24 12:59:12 +0000 | [diff] [blame] | 32 | |
| 33 | if (ctrl & NAND_NCE) |
TsiChung Liew | 6497966 | 2009-03-02 19:16:45 +0000 | [diff] [blame] | 34 | *nCE &= 0xFFFB; |
| 35 | else |
TsiChung Liew | 476f6bc | 2008-10-24 12:59:12 +0000 | [diff] [blame] | 36 | *nCE |= 0x0004; |
TsiChung Liew | 6497966 | 2009-03-02 19:16:45 +0000 | [diff] [blame] | 37 | |
Scott Wood | fdda946 | 2008-08-13 17:53:48 -0500 | [diff] [blame] | 38 | if (ctrl & NAND_CLE) |
| 39 | IO_ADDR_W |= SET_CLE; |
| 40 | if (ctrl & NAND_ALE) |
| 41 | IO_ADDR_W |= SET_ALE; |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 42 | |
Scott Wood | fdda946 | 2008-08-13 17:53:48 -0500 | [diff] [blame] | 43 | this->IO_ADDR_W = (void *)IO_ADDR_W; |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 44 | |
Scott Wood | fdda946 | 2008-08-13 17:53:48 -0500 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | if (cmd != NAND_CMD_NONE) |
| 48 | writeb(cmd, this->IO_ADDR_W); |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | int board_nand_init(struct nand_chip *nand) |
| 52 | { |
Alison Wang | 35d23df | 2012-03-26 21:49:05 +0000 | [diff] [blame] | 53 | gpio_t *gpio = (gpio_t *) MMAP_GPIO; |
| 54 | fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS; |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 55 | |
Alison Wang | 35d23df | 2012-03-26 21:49:05 +0000 | [diff] [blame] | 56 | clrbits_be32(&fbcs->csmr2, FBCS_CSMR_WP); |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 57 | |
TsiChung Liew | 476f6bc | 2008-10-24 12:59:12 +0000 | [diff] [blame] | 58 | /* |
| 59 | * set up pin configuration - enabled 2nd output buffer's signals |
| 60 | * (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc) |
| 61 | * to use nCE signal |
| 62 | */ |
Alison Wang | 35d23df | 2012-03-26 21:49:05 +0000 | [diff] [blame] | 63 | clrbits_8(&gpio->par_timer, GPIO_PAR_TIN3_TIN3); |
| 64 | setbits_8(&gpio->pddr_timer, 0x08); |
| 65 | setbits_8(&gpio->ppd_timer, 0x08); |
| 66 | out_8(&gpio->pclrr_timer, 0); |
| 67 | out_8(&gpio->podr_timer, 0); |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 68 | |
TsiChung Liew | 6497966 | 2009-03-02 19:16:45 +0000 | [diff] [blame] | 69 | nand->chip_delay = 60; |
Scott Wood | fdda946 | 2008-08-13 17:53:48 -0500 | [diff] [blame] | 70 | nand->ecc.mode = NAND_ECC_SOFT; |
| 71 | nand->cmd_ctrl = nand_hwcontrol; |
TsiChungLiew | f7d060c | 2008-01-14 17:19:54 -0600 | [diff] [blame] | 72 | |
| 73 | return 0; |
| 74 | } |
| 75 | #endif |