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https://github.com/AsahiLinux/u-boot
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4e5909450e
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_NAND namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
176 lines
3.5 KiB
C
176 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2005
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* 2N Telekomunikace, a.s. <www.2n.cz>
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* Ladislav Michl <michl@2n.cz>
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*/
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#include <common.h>
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#include <nand.h>
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#include <errno.h>
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#include <linux/mtd/concat.h>
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#include <linux/mtd/rawnand.h>
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#ifndef CFG_SYS_NAND_BASE_LIST
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#define CFG_SYS_NAND_BASE_LIST { CFG_SYS_NAND_BASE }
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#endif
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int nand_curr_device = -1;
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static struct mtd_info *nand_info[CONFIG_SYS_MAX_NAND_DEVICE];
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#if !CONFIG_IS_ENABLED(SYS_NAND_SELF_INIT)
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static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE];
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static ulong base_address[CONFIG_SYS_MAX_NAND_DEVICE] = CFG_SYS_NAND_BASE_LIST;
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#endif
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static char dev_name[CONFIG_SYS_MAX_NAND_DEVICE][8];
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static unsigned long total_nand_size; /* in kiB */
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struct mtd_info *get_nand_dev_by_index(int dev)
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{
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if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[dev] ||
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!nand_info[dev]->name)
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return NULL;
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return nand_info[dev];
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}
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int nand_mtd_to_devnum(struct mtd_info *mtd)
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{
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int i;
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for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
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if (mtd && get_nand_dev_by_index(i) == mtd)
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return i;
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}
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return -ENODEV;
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}
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/* Register an initialized NAND mtd device with the U-Boot NAND command. */
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int nand_register(int devnum, struct mtd_info *mtd)
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{
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if (devnum >= CONFIG_SYS_MAX_NAND_DEVICE)
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return -EINVAL;
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nand_info[devnum] = mtd;
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sprintf(dev_name[devnum], "nand%d", devnum);
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mtd->name = dev_name[devnum];
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#ifdef CONFIG_MTD
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/*
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* Add MTD device so that we can reference it later
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* via the mtdcore infrastructure (e.g. ubi).
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*/
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add_mtd_device(mtd);
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#endif
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total_nand_size += mtd->size / 1024;
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if (nand_curr_device == -1)
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nand_curr_device = devnum;
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return 0;
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}
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#if !CONFIG_IS_ENABLED(SYS_NAND_SELF_INIT)
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static void nand_init_chip(int i)
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{
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struct nand_chip *nand = &nand_chip[i];
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struct mtd_info *mtd = nand_to_mtd(nand);
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ulong base_addr = base_address[i];
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int maxchips = CONFIG_SYS_NAND_MAX_CHIPS;
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if (maxchips < 1)
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maxchips = 1;
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nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr;
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if (board_nand_init(nand))
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return;
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if (nand_scan(mtd, maxchips))
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return;
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nand_register(i, mtd);
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}
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#endif
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#ifdef CONFIG_MTD_CONCAT
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static void create_mtd_concat(void)
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{
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struct mtd_info *nand_info_list[CONFIG_SYS_MAX_NAND_DEVICE];
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int nand_devices_found = 0;
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int i;
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for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
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struct mtd_info *mtd = get_nand_dev_by_index(i);
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if (mtd != NULL) {
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nand_info_list[nand_devices_found] = mtd;
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nand_devices_found++;
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}
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}
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if (nand_devices_found > 1) {
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struct mtd_info *mtd;
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char c_mtd_name[16];
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/*
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* We detected multiple devices. Concatenate them together.
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*/
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sprintf(c_mtd_name, "nand%d", nand_devices_found);
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mtd = mtd_concat_create(nand_info_list, nand_devices_found,
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c_mtd_name);
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if (mtd == NULL)
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return;
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nand_register(nand_devices_found, mtd);
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}
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return;
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}
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#else
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static void create_mtd_concat(void)
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{
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}
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#endif
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unsigned long nand_size(void)
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{
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return total_nand_size;
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}
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void nand_init(void)
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{
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static int initialized;
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/*
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* Avoid initializing NAND Flash multiple times,
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* otherwise it will calculate a wrong total size.
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*/
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if (initialized)
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return;
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initialized = 1;
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#if CONFIG_IS_ENABLED(SYS_NAND_SELF_INIT)
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board_nand_init();
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#else
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int i;
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for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
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nand_init_chip(i);
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#endif
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#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
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/*
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* Select the chip in the board/cpu specific driver
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*/
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board_nand_select_device(mtd_to_nand(get_nand_dev_by_index(nand_curr_device)),
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nand_curr_device);
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#endif
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create_mtd_concat();
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}
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