arm: mx5: clock: add support for changing CPU clock via cmdline

[karo-tx-uboot.git] / nand_spl / nand_boot.c

diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c
index 4683c7c52c33e216d7c64a677ee9322250e16b23..125e7f3714cd8fe655b50b44d2ef9bb5722166d0 100644 (file)
--- a/nand_spl/nand_boot.c
+++ b/nand_spl/nand_boot.c
@@ -2,20 +2,7 @@
  * (C) Copyright 2006-2008
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
- * 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>
@@ -24,6 +11,11 @@
 
 static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS;
 
+#define ECCSTEPS       (CONFIG_SYS_NAND_PAGE_SIZE / \
+                                       CONFIG_SYS_NAND_ECCSIZE)
+#define ECCTOTAL       (ECCSTEPS * CONFIG_SYS_NAND_ECCBYTES)
+
+
 #if (CONFIG_SYS_NAND_PAGE_SIZE <= 512)
 /*
  * NAND command for small page NAND devices (512)
@@ -135,27 +127,51 @@ static int nand_is_bad_block(struct mtd_info *mtd, int block)
        return 0;
 }
 
+#if defined(CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST)
 static int nand_read_page(struct mtd_info *mtd, int block, int page, uchar *dst)
 {
        struct nand_chip *this = mtd->priv;
-       u_char *ecc_calc;
-       u_char *ecc_code;
-       u_char *oob_data;
+       u_char ecc_calc[ECCTOTAL];
+       u_char ecc_code[ECCTOTAL];
+       u_char oob_data[CONFIG_SYS_NAND_OOBSIZE];
        int i;
        int eccsize = CONFIG_SYS_NAND_ECCSIZE;
        int eccbytes = CONFIG_SYS_NAND_ECCBYTES;
-       int eccsteps = CONFIG_SYS_NAND_ECCSTEPS;
+       int eccsteps = ECCSTEPS;
        uint8_t *p = dst;
-       int stat;
 
+       nand_command(mtd, block, page, 0, NAND_CMD_READOOB);
+       this->read_buf(mtd, oob_data, CONFIG_SYS_NAND_OOBSIZE);
        nand_command(mtd, block, page, 0, NAND_CMD_READ0);
 
-       /* No malloc available for now, just use some temporary locations
-        * in SDRAM
-        */
-       ecc_calc = (u_char *)(CONFIG_SYS_SDRAM_BASE + 0x10000);
-       ecc_code = ecc_calc + 0x100;
-       oob_data = ecc_calc + 0x200;
+       /* Pick the ECC bytes out of the oob data */
+       for (i = 0; i < ECCTOTAL; i++)
+               ecc_code[i] = oob_data[nand_ecc_pos[i]];
+
+
+       for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+               this->ecc.hwctl(mtd, NAND_ECC_READ);
+               this->read_buf(mtd, p, eccsize);
+               this->ecc.calculate(mtd, p, &ecc_calc[i]);
+               this->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
+       }
+
+       return 0;
+}
+#else
+static int nand_read_page(struct mtd_info *mtd, int block, int page, uchar *dst)
+{
+       struct nand_chip *this = mtd->priv;
+       u_char ecc_calc[ECCTOTAL];
+       u_char ecc_code[ECCTOTAL];
+       u_char oob_data[CONFIG_SYS_NAND_OOBSIZE];
+       int i;
+       int eccsize = CONFIG_SYS_NAND_ECCSIZE;
+       int eccbytes = CONFIG_SYS_NAND_ECCBYTES;
+       int eccsteps = ECCSTEPS;
+       uint8_t *p = dst;
+
+       nand_command(mtd, block, page, 0, NAND_CMD_READ0);
 
        for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
                this->ecc.hwctl(mtd, NAND_ECC_READ);
@@ -165,10 +181,10 @@ static int nand_read_page(struct mtd_info *mtd, int block, int page, uchar *dst)
        this->read_buf(mtd, oob_data, CONFIG_SYS_NAND_OOBSIZE);
 
        /* Pick the ECC bytes out of the oob data */
-       for (i = 0; i < CONFIG_SYS_NAND_ECCTOTAL; i++)
+       for (i = 0; i < ECCTOTAL; i++)
                ecc_code[i] = oob_data[nand_ecc_pos[i]];
 
-       eccsteps = CONFIG_SYS_NAND_ECCSTEPS;
+       eccsteps = ECCSTEPS;
        p = dst;
 
        for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
@@ -176,11 +192,12 @@ static int nand_read_page(struct mtd_info *mtd, int block, int page, uchar *dst)
                 * from correct_data(). We just hope that all possible errors
                 * are corrected by this routine.
                 */
-               stat = this->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
+               this->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
        }
 
        return 0;
 }
+#endif /* #if defined(CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST) */
 
 static int nand_load(struct mtd_info *mtd, unsigned int offs,
                     unsigned int uboot_size, uchar *dst)
@@ -226,7 +243,6 @@ void nand_boot(void)
 {
        struct nand_chip nand_chip;
        nand_info_t nand_info;
-       int ret;
        __attribute__((noreturn)) void (*uboot)(void);
 
        /*
@@ -245,8 +261,8 @@ void nand_boot(void)
        /*
         * Load U-Boot image from NAND into RAM
         */
-       ret = nand_load(&nand_info, CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE,
-                       (uchar *)CONFIG_SYS_NAND_U_BOOT_DST);
+       nand_load(&nand_info, CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE,
+                 (uchar *)CONFIG_SYS_NAND_U_BOOT_DST);
 
 #ifdef CONFIG_NAND_ENV_DST
        nand_load(&nand_info, CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,