mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-14 07:13:03 +00:00
578931b34d
This allows a driver to run code between nand_scan_ident() and nand_scan_tail(), among other things. See the additions to doc/README.nand for details. To allow a gradual transition, Boards that don't set CONFIG_SYS_NAND_SELF_INIT will still be initialized the old way, but new drivers should not require this, and existing drivers should be converted when convenient. Signed-off-by: Scott Wood <scottwood@freescale.com>
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/*
|
|
* (C) Copyright 2005
|
|
* 2N Telekomunikace, a.s. <www.2n.cz>
|
|
* Ladislav Michl <michl@2n.cz>
|
|
*
|
|
* 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
|
|
* version 2 as published by the Free Software Foundation.
|
|
*
|
|
* 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 <nand.h>
|
|
#include <errno.h>
|
|
|
|
#ifndef CONFIG_SYS_NAND_BASE_LIST
|
|
#define CONFIG_SYS_NAND_BASE_LIST { CONFIG_SYS_NAND_BASE }
|
|
#endif
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int nand_curr_device = -1;
|
|
|
|
|
|
nand_info_t nand_info[CONFIG_SYS_MAX_NAND_DEVICE];
|
|
|
|
#ifndef CONFIG_SYS_NAND_SELF_INIT
|
|
static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE];
|
|
static ulong base_address[CONFIG_SYS_MAX_NAND_DEVICE] = CONFIG_SYS_NAND_BASE_LIST;
|
|
#endif
|
|
|
|
static char dev_name[CONFIG_SYS_MAX_NAND_DEVICE][8];
|
|
|
|
static unsigned long total_nand_size; /* in kiB */
|
|
|
|
/* Register an initialized NAND mtd device with the U-Boot NAND command. */
|
|
int nand_register(int devnum)
|
|
{
|
|
struct mtd_info *mtd;
|
|
|
|
if (devnum >= CONFIG_SYS_MAX_NAND_DEVICE)
|
|
return -EINVAL;
|
|
|
|
mtd = &nand_info[devnum];
|
|
|
|
sprintf(dev_name[devnum], "nand%d", devnum);
|
|
mtd->name = dev_name[devnum];
|
|
|
|
#ifdef CONFIG_MTD_DEVICE
|
|
/*
|
|
* Add MTD device so that we can reference it later
|
|
* via the mtdcore infrastructure (e.g. ubi).
|
|
*/
|
|
add_mtd_device(mtd);
|
|
#endif
|
|
|
|
total_nand_size += mtd->size / 1024;
|
|
|
|
if (nand_curr_device == -1)
|
|
nand_curr_device = devnum;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifndef CONFIG_SYS_NAND_SELF_INIT
|
|
static void nand_init_chip(int i)
|
|
{
|
|
struct mtd_info *mtd = &nand_info[i];
|
|
struct nand_chip *nand = &nand_chip[i];
|
|
ulong base_addr = base_address[i];
|
|
int maxchips = CONFIG_SYS_NAND_MAX_CHIPS;
|
|
|
|
if (maxchips < 1)
|
|
maxchips = 1;
|
|
|
|
mtd->priv = nand;
|
|
nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr;
|
|
|
|
if (board_nand_init(nand))
|
|
return;
|
|
|
|
if (nand_scan(mtd, maxchips))
|
|
return;
|
|
|
|
nand_register(i);
|
|
}
|
|
#endif
|
|
|
|
void nand_init(void)
|
|
{
|
|
#ifdef CONFIG_SYS_NAND_SELF_INIT
|
|
board_nand_init();
|
|
#else
|
|
int i;
|
|
|
|
for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
|
|
nand_init_chip(i);
|
|
#endif
|
|
|
|
printf("%lu MiB\n", total_nand_size / 1024);
|
|
|
|
#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
|
|
/*
|
|
* Select the chip in the board/cpu specific driver
|
|
*/
|
|
board_nand_select_device(nand_info[nand_curr_device].priv, nand_curr_device);
|
|
#endif
|
|
}
|