* Authors: Nick Spence <nick.spence@freescale.com>,
* Scott Wood <scottwood@freescale.com>
*
- * 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
+#include <nand.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#define MAX_BANKS 8
#define ERR_BYTE 0xFF /* Value returned for read bytes when read failed */
-#define FCM_TIMEOUT_MSECS 10 /* Maximum number of mSecs to wait for FCM */
#define LTESR_NAND_MASK (LTESR_FCT | LTESR_PAR | LTESR_CC)
/* mtd information per set */
struct fsl_elbc_mtd {
- struct mtd_info mtd;
struct nand_chip chip;
struct fsl_elbc_ctrl *ctrl;
struct fsl_elbc_mtd *chips[MAX_BANKS];
/* device info */
- fsl_lbus_t *regs;
+ fsl_lbc_t *regs;
u8 __iomem *addr; /* Address of assigned FCM buffer */
unsigned int page; /* Last page written to / read from */
unsigned int read_bytes; /* Number of bytes read during command */
unsigned int mdr; /* UPM/FCM Data Register value */
unsigned int use_mdr; /* Non zero if the MDR is to be set */
unsigned int oob; /* Non zero if operating on OOB data */
- uint8_t *oob_poi; /* Place to write ECC after read back */
};
/* These map to the positions used by the FCM hardware ECC generator */
struct nand_chip *chip = mtd->priv;
struct fsl_elbc_mtd *priv = chip->priv;
struct fsl_elbc_ctrl *ctrl = priv->ctrl;
- fsl_lbus_t *lbc = ctrl->regs;
+ fsl_lbc_t *lbc = ctrl->regs;
int buf_num;
ctrl->page = page_addr;
struct nand_chip *chip = mtd->priv;
struct fsl_elbc_mtd *priv = chip->priv;
struct fsl_elbc_ctrl *ctrl = priv->ctrl;
- fsl_lbus_t *lbc = ctrl->regs;
- long long end_tick;
+ fsl_lbc_t *lbc = ctrl->regs;
+ u32 timeo = (CONFIG_SYS_HZ * 10) / 1000;
+ u32 time_start;
u32 ltesr;
/* Setup the FMR[OP] to execute without write protection */
out_be32(&lbc->lsor, priv->bank);
/* wait for FCM complete flag or timeout */
- end_tick = usec2ticks(FCM_TIMEOUT_MSECS * 1000) + get_ticks();
+ time_start = get_timer(0);
ltesr = 0;
- while (end_tick > get_ticks()) {
+ while (get_timer(time_start) < timeo) {
ltesr = in_be32(&lbc->ltesr);
if (ltesr & LTESR_CC)
break;
{
struct fsl_elbc_mtd *priv = chip->priv;
struct fsl_elbc_ctrl *ctrl = priv->ctrl;
- fsl_lbus_t *lbc = ctrl->regs;
+ fsl_lbc_t *lbc = ctrl->regs;
if (priv->page_size) {
out_be32(&lbc->fir,
struct nand_chip *chip = mtd->priv;
struct fsl_elbc_mtd *priv = chip->priv;
struct fsl_elbc_ctrl *ctrl = priv->ctrl;
- fsl_lbus_t *lbc = ctrl->regs;
+ fsl_lbc_t *lbc = ctrl->regs;
ctrl->use_mdr = 0;
/* READID must read all 5 possible bytes while CEB is active */
case NAND_CMD_READID:
- vdbg("fsl_elbc_cmdfunc: NAND_CMD_READID.\n");
+ case NAND_CMD_PARAM:
+ vdbg("fsl_elbc_cmdfunc: NAND_CMD 0x%x.\n", command);
out_be32(&lbc->fir, (FIR_OP_CW0 << FIR_OP0_SHIFT) |
(FIR_OP_UA << FIR_OP1_SHIFT) |
(FIR_OP_RBW << FIR_OP2_SHIFT));
- out_be32(&lbc->fcr, NAND_CMD_READID << FCR_CMD0_SHIFT);
- /* 5 bytes for manuf, device and exts */
- out_be32(&lbc->fbcr, 5);
- ctrl->read_bytes = 5;
+ out_be32(&lbc->fcr, command << FCR_CMD0_SHIFT);
+ /*
+ * although currently it's 8 bytes for READID, we always read
+ * the maximum 256 bytes(for PARAM)
+ */
+ out_be32(&lbc->fbcr, 256);
+ ctrl->read_bytes = 256;
ctrl->use_mdr = 1;
- ctrl->mdr = 0;
-
+ ctrl->mdr = column;
set_addr(mtd, 0, 0, 0);
fsl_elbc_run_command(mtd);
return;
/* PAGEPROG reuses all of the setup from SEQIN and adds the length */
case NAND_CMD_PAGEPROG: {
- int full_page;
vdbg("fsl_elbc_cmdfunc: NAND_CMD_PAGEPROG "
"writing %d bytes.\n", ctrl->index);
* write so the HW generates the ECC.
*/
if (ctrl->oob || ctrl->column != 0 ||
- ctrl->index != mtd->writesize + mtd->oobsize) {
+ ctrl->index != mtd->writesize + mtd->oobsize)
out_be32(&lbc->fbcr, ctrl->index);
- full_page = 0;
- } else {
+ else
out_be32(&lbc->fbcr, 0);
- full_page = 1;
- }
fsl_elbc_run_command(mtd);
- /* Read back the page in order to fill in the ECC for the
- * caller. Is this really needed?
- */
- if (full_page && ctrl->oob_poi) {
- out_be32(&lbc->fbcr, 3);
- set_addr(mtd, 6, page_addr, 1);
-
- ctrl->read_bytes = mtd->writesize + 9;
-
- fsl_elbc_do_read(chip, 1);
- fsl_elbc_run_command(mtd);
-
- memcpy_fromio(ctrl->oob_poi + 6,
- &ctrl->addr[ctrl->index], 3);
- ctrl->index += 3;
- }
-
- ctrl->oob_poi = NULL;
return;
}
len, avail);
}
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
/*
* Verify buffer against the FCM Controller Data Buffer
*/
ctrl->index += len;
return i == len && ctrl->status == LTESR_CC ? 0 : -EIO;
}
+#endif
/* This function is called after Program and Erase Operations to
* check for success or failure.
{
struct fsl_elbc_mtd *priv = chip->priv;
struct fsl_elbc_ctrl *ctrl = priv->ctrl;
- fsl_lbus_t *lbc = ctrl->regs;
+ fsl_lbc_t *lbc = ctrl->regs;
if (ctrl->status != LTESR_CC)
return NAND_STATUS_FAIL;
return fsl_elbc_read_byte(mtd);
}
-static int fsl_elbc_read_page(struct mtd_info *mtd,
- struct nand_chip *chip,
- uint8_t *buf)
+static int fsl_elbc_read_page(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf, int oob_required, int page)
{
fsl_elbc_read_buf(mtd, buf, mtd->writesize);
fsl_elbc_read_buf(mtd, chip->oob_poi, mtd->oobsize);
/* ECC will be calculated automatically, and errors will be detected in
* waitfunc.
*/
-static void fsl_elbc_write_page(struct mtd_info *mtd,
- struct nand_chip *chip,
- const uint8_t *buf)
+static int fsl_elbc_write_page(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf, int oob_required)
{
- struct fsl_elbc_mtd *priv = chip->priv;
- struct fsl_elbc_ctrl *ctrl = priv->ctrl;
-
fsl_elbc_write_buf(mtd, buf, mtd->writesize);
fsl_elbc_write_buf(mtd, chip->oob_poi, mtd->oobsize);
- ctrl->oob_poi = chip->oob_poi;
+ return 0;
}
static struct fsl_elbc_ctrl *elbc_ctrl;
if (!elbc_ctrl)
return;
-#ifdef CONFIG_MPC85xx
- elbc_ctrl->regs = (void *)CONFIG_SYS_MPC85xx_LBC_ADDR;
-#else
- elbc_ctrl->regs = &((immap_t *)CONFIG_SYS_IMMR)->lbus;
-#endif
+ elbc_ctrl->regs = LBC_BASE_ADDR;
/* clear event registers */
out_be32(&elbc_ctrl->regs->ltesr, LTESR_NAND_MASK);
elbc_ctrl->addr = NULL;
}
-int board_nand_init(struct nand_chip *nand)
+static int fsl_elbc_chip_init(int devnum, u8 *addr)
{
+ struct mtd_info *mtd = &nand_info[devnum];
+ struct nand_chip *nand;
struct fsl_elbc_mtd *priv;
uint32_t br = 0, or = 0;
+ int ret;
if (!elbc_ctrl) {
fsl_elbc_ctrl_init();
return -ENOMEM;
priv->ctrl = elbc_ctrl;
- priv->vbase = nand->IO_ADDR_R;
+ priv->vbase = addr;
/* Find which chip select it is connected to. It'd be nice
* if we could pass more than one datum to the NAND driver...
*/
for (priv->bank = 0; priv->bank < MAX_BANKS; priv->bank++) {
- phys_addr_t base_addr = virt_to_phys(nand->IO_ADDR_R);
+ phys_addr_t phys_addr = virt_to_phys(addr);
br = in_be32(&elbc_ctrl->regs->bank[priv->bank].br);
or = in_be32(&elbc_ctrl->regs->bank[priv->bank].or);
if ((br & BR_V) && (br & BR_MSEL) == BR_MS_FCM &&
- (br & or & BR_BA) == BR_PHYS_ADDR(base_addr))
+ (br & or & BR_BA) == BR_PHYS_ADDR(phys_addr))
break;
}
return -ENODEV;
}
+ nand = &priv->chip;
+ mtd->priv = nand;
+
elbc_ctrl->chips[priv->bank] = priv;
/* fill in nand_chip structure */
nand->read_byte = fsl_elbc_read_byte;
nand->write_buf = fsl_elbc_write_buf;
nand->read_buf = fsl_elbc_read_buf;
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
nand->verify_buf = fsl_elbc_verify_buf;
+#endif
nand->select_chip = fsl_elbc_select_chip;
nand->cmdfunc = fsl_elbc_cmdfunc;
nand->waitfunc = fsl_elbc_wait;
nand->bbt_md = &bbt_mirror_descr;
/* set up nand options */
- nand->options = NAND_NO_READRDY | NAND_NO_AUTOINCR |
- NAND_USE_FLASH_BBT;
+ nand->options = NAND_NO_SUBPAGE_WRITE;
+ nand->bbt_options = NAND_BBT_USE_FLASH;
nand->controller = &elbc_ctrl->controller;
nand->priv = priv;
nand->ecc.read_page = fsl_elbc_read_page;
nand->ecc.write_page = fsl_elbc_write_page;
-#ifdef CONFIG_FSL_ELBC_FMR
- priv->fmr = CONFIG_FSL_ELBC_FMR;
-#else
priv->fmr = (15 << FMR_CWTO_SHIFT) | (2 << FMR_AL_SHIFT);
- /*
- * Hardware expects small page has ECCM0, large page has ECCM1
- * when booting from NAND. Board config can override if not
- * booting from NAND.
- */
- if (or & OR_FCM_PGS)
- priv->fmr |= FMR_ECCM;
-#endif
-
/* If CS Base Register selects full hardware ECC then use it */
if ((br & BR_DECC) == BR_DECC_CHK_GEN) {
nand->ecc.mode = NAND_ECC_HW;
nand->ecc.size = 512;
nand->ecc.bytes = 3;
nand->ecc.steps = 1;
+ nand->ecc.strength = 1;
} else {
- /* otherwise fall back to default software ECC */
+ /* otherwise fall back to software ECC */
+#if defined(CONFIG_NAND_ECC_BCH)
+ nand->ecc.mode = NAND_ECC_SOFT_BCH;
+#else
nand->ecc.mode = NAND_ECC_SOFT;
+#endif
}
+ ret = nand_scan_ident(mtd, 1, NULL);
+ if (ret)
+ return ret;
+
/* Large-page-specific setup */
- if (or & OR_FCM_PGS) {
+ if (mtd->writesize == 2048) {
+ setbits_be32(&elbc_ctrl->regs->bank[priv->bank].or,
+ OR_FCM_PGS);
+ in_be32(&elbc_ctrl->regs->bank[priv->bank].or);
+
priv->page_size = 1;
nand->badblock_pattern = &largepage_memorybased;
+ /*
+ * Hardware expects small page has ECCM0, large page has
+ * ECCM1 when booting from NAND, and we follow that even
+ * when not booting from NAND.
+ */
+ priv->fmr |= FMR_ECCM;
+
/* adjust ecc setup if needed */
if ((br & BR_DECC) == BR_DECC_CHK_GEN) {
nand->ecc.steps = 4;
&fsl_elbc_oob_lp_eccm1 :
&fsl_elbc_oob_lp_eccm0;
}
+ } else if (mtd->writesize == 512) {
+ clrbits_be32(&elbc_ctrl->regs->bank[priv->bank].or,
+ OR_FCM_PGS);
+ in_be32(&elbc_ctrl->regs->bank[priv->bank].or);
+ } else {
+ return -ENODEV;
}
+ ret = nand_scan_tail(mtd);
+ if (ret)
+ return ret;
+
+ ret = nand_register(devnum);
+ if (ret)
+ return ret;
+
return 0;
}
+
+#ifndef CONFIG_SYS_NAND_BASE_LIST
+#define CONFIG_SYS_NAND_BASE_LIST { CONFIG_SYS_NAND_BASE }
+#endif
+
+static unsigned long base_address[CONFIG_SYS_MAX_NAND_DEVICE] =
+ CONFIG_SYS_NAND_BASE_LIST;
+
+void board_nand_init(void)
+{
+ int i;
+
+ for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
+ fsl_elbc_chip_init(i, (u8 *)base_address[i]);
+}
projects / karo-tx-uboot.git / blobdiff