From: Stefan Agner stefan.agner@toradex.com
In preparation to convert the driver to use NAND self init provide a new minimal init for SPL builds. As a side effect this also reduces size of SPL by about 4KiB.
Signed-off-by: Stefan Agner stefan.agner@toradex.com ---
Changes in v4: None Changes in v3: None Changes in v2: None
drivers/mtd/nand/mxs_nand.c | 43 +++++++++++++++++++++++++++++++++ drivers/mtd/nand/mxs_nand.h | 10 ++++++++ drivers/mtd/nand/mxs_nand_spl.c | 3 ++- 3 files changed, 55 insertions(+), 1 deletion(-) create mode 100644 drivers/mtd/nand/mxs_nand.h
diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c index b9ffa7cbae..5b7ad18c42 100644 --- a/drivers/mtd/nand/mxs_nand.c +++ b/drivers/mtd/nand/mxs_nand.c @@ -25,6 +25,7 @@ #include <asm/mach-imx/regs-gpmi.h> #include <asm/arch/sys_proto.h> #include <asm/mach-imx/dma.h> +#include "mxs_nand.h"
#define MXS_NAND_DMA_DESCRIPTOR_COUNT 4
@@ -1149,6 +1150,48 @@ err1: return ret; }
+int mxs_nand_init_spl(struct nand_chip *nand) +{ + struct mxs_nand_info *nand_info; + int err; + + nand_info = malloc(sizeof(struct mxs_nand_info)); + if (!nand_info) { + printf("MXS NAND: Failed to allocate private data\n"); + return -ENOMEM; + } + memset(nand_info, 0, sizeof(struct mxs_nand_info)); + + err = mxs_nand_alloc_buffers(nand_info); + if (err) + return err; + + err = mxs_nand_init(nand_info); + if (err) + return err; + + nand_set_controller_data(nand, nand_info); + + nand->options |= NAND_NO_SUBPAGE_WRITE; + + nand->cmd_ctrl = mxs_nand_cmd_ctrl; + nand->dev_ready = mxs_nand_device_ready; + nand->select_chip = mxs_nand_select_chip; + nand->scan_bbt = mxs_nand_scan_bbt; + + nand->read_byte = mxs_nand_read_byte; + nand->read_buf = mxs_nand_read_buf; + + nand->ecc.read_page = mxs_nand_ecc_read_page; + + nand->ecc.mode = NAND_ECC_HW; + nand->ecc.bytes = 9; + nand->ecc.size = 512; + nand->ecc.strength = 8; + + return 0; +} + /*! * This function is called during the driver binding process. * diff --git a/drivers/mtd/nand/mxs_nand.h b/drivers/mtd/nand/mxs_nand.h new file mode 100644 index 0000000000..9bb7148d98 --- /dev/null +++ b/drivers/mtd/nand/mxs_nand.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * NXP GPMI NAND flash driver + * + * Copyright (C) 2018 Toradex + * Authors: + * Stefan Agner stefan.agner@toradex.com + */ + +int mxs_nand_init_spl(struct nand_chip *nand); diff --git a/drivers/mtd/nand/mxs_nand_spl.c b/drivers/mtd/nand/mxs_nand_spl.c index 3e8b35f04a..47857a81bc 100644 --- a/drivers/mtd/nand/mxs_nand_spl.c +++ b/drivers/mtd/nand/mxs_nand_spl.c @@ -6,6 +6,7 @@ #include <common.h> #include <nand.h> #include <malloc.h> +#include "mxs_nand.h"
static struct mtd_info *mtd; static struct nand_chip nand_chip; @@ -145,7 +146,7 @@ static int mxs_nand_init(void) return 0;
/* init mxs nand driver */ - board_nand_init(&nand_chip); + mxs_nand_init_spl(&nand_chip); mtd = nand_to_mtd(&nand_chip); /* set mtd functions */ nand_chip.cmdfunc = mxs_nand_command;