summaryrefslogtreecommitdiff
path: root/board/prodrive/alpr/nand.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/prodrive/alpr/nand.c')
-rw-r--r--board/prodrive/alpr/nand.c124
1 files changed, 0 insertions, 124 deletions
diff --git a/board/prodrive/alpr/nand.c b/board/prodrive/alpr/nand.c
deleted file mode 100644
index ca40cea9ad..0000000000
--- a/board/prodrive/alpr/nand.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * (C) Copyright 2006
- * Heiko Schocher, DENX Software Engineering, hs@denx.de
- *
- * (C) Copyright 2006
- * Stefan Roese, DENX Software Engineering, sr@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-
-#if defined(CONFIG_CMD_NAND)
-
-#include <asm/processor.h>
-#include <nand.h>
-
-struct alpr_ndfc_regs {
- u8 cmd[4];
- u8 addr_wait;
- u8 term;
- u8 dummy;
- u8 dummy2;
- u8 data;
-};
-
-static u8 hwctl;
-static struct alpr_ndfc_regs *alpr_ndfc = NULL;
-
-#define readb(addr) (u8)(*(volatile u8 *)(addr))
-#define writeb(d,addr) *(volatile u8 *)(addr) = ((u8)(d))
-
-/*
- * The ALPR has a NAND Flash Controller (NDFC) that handles all accesses to
- * the NAND devices. The NDFC has command, address and data registers that
- * when accessed will set up the NAND flash pins appropriately. We'll use the
- * hwcontrol function to save the configuration in a global variable.
- * We can then use this information in the read and write functions to
- * determine which NDFC register to access.
- *
- * There are 2 NAND devices on the board, a Hynix HY27US08561A (1 GByte).
- */
-static void alpr_nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-{
- struct nand_chip *this = mtd->priv;
-
- if (ctrl & NAND_CTRL_CHANGE) {
- if ( ctrl & NAND_CLE )
- hwctl |= 0x1;
- else
- hwctl &= ~0x1;
- if ( ctrl & NAND_ALE )
- hwctl |= 0x2;
- else
- hwctl &= ~0x2;
- if ( (ctrl & NAND_NCE) != NAND_NCE)
- writeb(0x00, &(alpr_ndfc->term));
- }
- if (cmd != NAND_CMD_NONE)
- writeb(cmd, this->IO_ADDR_W);
-}
-
-static u_char alpr_nand_read_byte(struct mtd_info *mtd)
-{
- return readb(&(alpr_ndfc->data));
-}
-
-static void alpr_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
-{
- struct nand_chip *nand = mtd->priv;
- int i;
-
- for (i = 0; i < len; i++) {
- if (hwctl & 0x1)
- /*
- * IO_ADDR_W used as CMD[i] reg to support multiple NAND
- * chips.
- */
- writeb(buf[i], nand->IO_ADDR_W);
- else if (hwctl & 0x2)
- writeb(buf[i], &(alpr_ndfc->addr_wait));
- else
- writeb(buf[i], &(alpr_ndfc->data));
- }
-}
-
-static void alpr_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
-{
- int i;
-
- for (i = 0; i < len; i++) {
- buf[i] = readb(&(alpr_ndfc->data));
- }
-}
-
-static int alpr_nand_dev_ready(struct mtd_info *mtd)
-{
- /*
- * Blocking read to wait for NAND to be ready
- */
- (void)readb(&(alpr_ndfc->addr_wait));
-
- /*
- * Return always true
- */
- return 1;
-}
-
-int board_nand_init(struct nand_chip *nand)
-{
- alpr_ndfc = (struct alpr_ndfc_regs *)CONFIG_SYS_NAND_BASE;
-
- nand->ecc.mode = NAND_ECC_SOFT;
-
- /* Reference hardware control function */
- nand->cmd_ctrl = alpr_nand_hwcontrol;
- nand->read_byte = alpr_nand_read_byte;
- nand->write_buf = alpr_nand_write_buf;
- nand->read_buf = alpr_nand_read_buf;
- nand->dev_ready = alpr_nand_dev_ready;
-
- return 0;
-}
-#endif