mirror of
https://xff.cz/git/u-boot/
synced 2025-10-31 02:15:45 +01:00
5d29e27eb9
add for nand devices mtd concat support. Generic MTD concat support is already ported to mainline, and used in the cfi_mtd driver. This patch adds it similiar for nand devices. Signed-off-by: Heiko Schocher <hs@denx.de>
157 lines
3.1 KiB
C
157 lines
3.1 KiB
C
/*
|
|
* (C) Copyright 2005
|
|
* 2N Telekomunikace, a.s. <www.2n.cz>
|
|
* Ladislav Michl <michl@2n.cz>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <nand.h>
|
|
#include <errno.h>
|
|
#include <linux/mtd/concat.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;
|
|
|
|
|
|
struct mtd_info *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 */
|
|
|
|
int nand_mtd_to_devnum(struct mtd_info *mtd)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(nand_info); i++) {
|
|
if (mtd && nand_info[i] == mtd)
|
|
return i;
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
nand_info[devnum] = mtd;
|
|
|
|
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 nand_chip *nand = &nand_chip[i];
|
|
struct mtd_info *mtd = nand_to_mtd(nand);
|
|
ulong base_addr = base_address[i];
|
|
int maxchips = CONFIG_SYS_NAND_MAX_CHIPS;
|
|
|
|
if (maxchips < 1)
|
|
maxchips = 1;
|
|
|
|
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, mtd);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_MTD_CONCAT
|
|
static void create_mtd_concat(void)
|
|
{
|
|
struct mtd_info *nand_info_list[CONFIG_SYS_MAX_NAND_DEVICE];
|
|
int nand_devices_found = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
|
|
if (nand_info[i] != NULL) {
|
|
nand_info_list[nand_devices_found] = nand_info[i];
|
|
nand_devices_found++;
|
|
}
|
|
}
|
|
if (nand_devices_found > 1) {
|
|
struct mtd_info *mtd;
|
|
char c_mtd_name[16];
|
|
|
|
/*
|
|
* We detected multiple devices. Concatenate them together.
|
|
*/
|
|
sprintf(c_mtd_name, "nand%d", nand_devices_found);
|
|
mtd = mtd_concat_create(nand_info_list, nand_devices_found,
|
|
c_mtd_name);
|
|
|
|
if (mtd == NULL)
|
|
return;
|
|
|
|
nand_register(nand_devices_found, mtd);
|
|
}
|
|
|
|
return;
|
|
}
|
|
#else
|
|
static void create_mtd_concat(void)
|
|
{
|
|
}
|
|
#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(mtd_to_nand(nand_info[nand_curr_device]),
|
|
nand_curr_device);
|
|
#endif
|
|
|
|
create_mtd_concat();
|
|
}
|