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- /*
- * (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>
- #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
- 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
- }
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