| /* |
| * (C) Copyright 2008 |
| * Heiko Schocher, DENX Software Engineering, hs@denx.de. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <common.h> |
| #include <ioports.h> |
| #include <mpc8260.h> |
| |
| #include "tqm8272.h" |
| |
| /* UPM pattern for bus clock = 66.7 MHz */ |
| static const uint upmTable67[] = |
| { |
| /* Offset UPM Read Single RAM array entry -> NAND Read Data */ |
| /* 0x00 */ 0x0fa3f100, 0x0fa3b000, 0x0fa33100, 0x0fa33000, |
| /* 0x04 */ 0x0fa33000, 0x0fa33004, 0xfffffc01, 0xfffffc00, |
| |
| /* UPM Read Burst RAM array entry -> unused */ |
| /* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| |
| /* UPM Read Burst RAM array entry -> unused */ |
| /* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| |
| /* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */ |
| /* 0x18 */ 0x00a3fc00, 0x00a3fc00, 0x00a3fc00, 0x00a3fc00, |
| /* 0x1C */ 0x0fa3fc00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00, |
| |
| /* UPM Write Burst RAM array entry -> unused */ |
| /* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| |
| /* UPM Refresh Timer RAM array entry -> unused */ |
| /* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| |
| /* UPM Exception RAM array entry -> unsused */ |
| /* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| }; |
| |
| /* UPM pattern for bus clock = 100 MHz */ |
| static const uint upmTable100[] = |
| { |
| /* Offset UPM Read Single RAM array entry -> NAND Read Data */ |
| /* 0x00 */ 0x0fa3f200, 0x0fa3b000, 0x0fa33300, 0x0fa33000, |
| /* 0x04 */ 0x0fa33000, 0x0fa33004, 0xfffffc01, 0xfffffc00, |
| |
| /* UPM Read Burst RAM array entry -> unused */ |
| /* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| |
| /* UPM Read Burst RAM array entry -> unused */ |
| /* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| |
| /* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */ |
| /* 0x18 */ 0x00a3ff00, 0x00a3fc00, 0x00a3fc00, 0x0fa3fc00, |
| /* 0x1C */ 0x0fa3fc00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00, |
| |
| /* UPM Write Burst RAM array entry -> unused */ |
| /* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| |
| /* UPM Refresh Timer RAM array entry -> unused */ |
| /* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| |
| /* UPM Exception RAM array entry -> unsused */ |
| /* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| }; |
| |
| /* UPM pattern for bus clock = 133.3 MHz */ |
| static const uint upmTable133[] = |
| { |
| /* Offset UPM Read Single RAM array entry -> NAND Read Data */ |
| /* 0x00 */ 0x0fa3f300, 0x0fa3b000, 0x0fa33300, 0x0fa33000, |
| /* 0x04 */ 0x0fa33200, 0x0fa33004, 0xfffffc01, 0xfffffc00, |
| |
| /* UPM Read Burst RAM array entry -> unused */ |
| /* 0x08 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x0C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| |
| /* UPM Read Burst RAM array entry -> unused */ |
| /* 0x10 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x14 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| |
| /* UPM Write Single RAM array entry -> NAND Write Data, ADDR and CMD */ |
| /* 0x18 */ 0x00a3ff00, 0x00a3fc00, 0x00a3fd00, 0x0fa3fc00, |
| /* 0x1C */ 0x0fa3fd00, 0x0fa3fc04, 0xfffffc01, 0xfffffc00, |
| |
| /* UPM Write Burst RAM array entry -> unused */ |
| /* 0x20 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x24 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x28 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x2C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| |
| /* UPM Refresh Timer RAM array entry -> unused */ |
| /* 0x30 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x34 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc00, |
| /* 0x38 */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| |
| /* UPM Exception RAM array entry -> unsused */ |
| /* 0x3C */ 0xfffffc00, 0xfffffc00, 0xfffffc00, 0xfffffc01, |
| }; |
| |
| static int chipsel = 0; |
| |
| #if defined(CONFIG_CMD_NAND) |
| |
| #include <nand.h> |
| #include <linux/mtd/mtd.h> |
| |
| static u8 hwctl = 0; |
| |
| static void upmnand_write_byte(struct mtd_info *mtdinfo, u_char byte) |
| { |
| struct nand_chip *this = mtdinfo->priv; |
| ulong base = (ulong) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST); |
| |
| if (hwctl & 0x1) { |
| WRITE_NAND_UPM(byte, base, CFG_NAND_UPM_WRITE_CMD_OFS); |
| } else if (hwctl & 0x2) { |
| WRITE_NAND_UPM(byte, base, CFG_NAND_UPM_WRITE_ADDR_OFS); |
| } else { |
| WRITE_NAND(byte, base); |
| } |
| } |
| |
| static void upmnand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) |
| { |
| 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) |
| upmnand_write_byte (mtd, cmd); |
| } |
| |
| static u_char upmnand_read_byte(struct mtd_info *mtdinfo) |
| { |
| struct nand_chip *this = mtdinfo->priv; |
| ulong base = (ulong) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST); |
| |
| return READ_NAND(base); |
| } |
| |
| static int tqm8272_dev_ready(struct mtd_info *mtdinfo) |
| { |
| /* constant delay (see also tR in the datasheet) */ |
| udelay(12); \ |
| return 1; |
| } |
| |
| #ifndef CONFIG_NAND_SPL |
| static void tqm8272_read_buf(struct mtd_info *mtdinfo, uint8_t *buf, int len) |
| { |
| struct nand_chip *this = mtdinfo->priv; |
| unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST); |
| int i; |
| |
| for (i = 0; i< len; i++) |
| buf[i] = *base; |
| } |
| |
| static void tqm8272_write_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len) |
| { |
| struct nand_chip *this = mtdinfo->priv; |
| unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST); |
| int i; |
| |
| for (i = 0; i< len; i++) |
| *base = buf[i]; |
| } |
| |
| static int tqm8272_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len) |
| { |
| struct nand_chip *this = mtdinfo->priv; |
| unsigned char *base = (unsigned char *) (this->IO_ADDR_W + chipsel * CFG_NAND_CS_DIST); |
| int i; |
| |
| for (i = 0; i < len; i++) |
| if (buf[i] != *base) |
| return -1; |
| return 0; |
| } |
| #endif /* #ifndef CONFIG_NAND_SPL */ |
| |
| void board_nand_select_device(struct nand_chip *nand, int chip) |
| { |
| chipsel = chip; |
| } |
| |
| int board_nand_init(struct nand_chip *nand) |
| { |
| static int UpmInit = 0; |
| volatile immap_t * immr = (immap_t *)CFG_IMMR; |
| volatile memctl8260_t *memctl = &immr->im_memctl; |
| |
| if (hwinf.nand == 0) return -1; |
| |
| /* Setup the UPM */ |
| if (UpmInit == 0) { |
| switch (hwinf.busclk_real) { |
| case 100000000: |
| upmconfig (UPMB, (uint *) upmTable100, |
| sizeof (upmTable100) / sizeof (uint)); |
| break; |
| case 133333333: |
| upmconfig (UPMB, (uint *) upmTable133, |
| sizeof (upmTable133) / sizeof (uint)); |
| break; |
| default: |
| upmconfig (UPMB, (uint *) upmTable67, |
| sizeof (upmTable67) / sizeof (uint)); |
| break; |
| } |
| UpmInit = 1; |
| } |
| |
| /* Setup the memctrl */ |
| memctl->memc_or3 = CFG_NAND_OR; |
| memctl->memc_br3 = CFG_NAND_BR; |
| memctl->memc_mbmr = (MxMR_OP_NORM); |
| |
| nand->ecc.mode = NAND_ECC_SOFT; |
| |
| nand->cmd_ctrl = upmnand_hwcontrol; |
| nand->read_byte = upmnand_read_byte; |
| nand->dev_ready = tqm8272_dev_ready; |
| |
| #ifndef CONFIG_NAND_SPL |
| nand->write_buf = tqm8272_write_buf; |
| nand->read_buf = tqm8272_read_buf; |
| nand->verify_buf = tqm8272_verify_buf; |
| #endif |
| |
| /* |
| * Select required NAND chip |
| */ |
| board_nand_select_device(nand, 0); |
| return 0; |
| } |
| |
| #endif |