#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 }
int nand_curr_device = -1;
-
-struct mtd_info *nand_info[CONFIG_SYS_MAX_NAND_DEVICE];
+static 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 unsigned long total_nand_size; /* in kiB */
+struct mtd_info *get_nand_dev_by_index(int dev)
+{
+ if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[dev] ||
+ !nand_info[dev]->name)
+ return NULL;
+
+ return nand_info[dev];
+}
+
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)
+ for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
+ if (mtd && get_nand_dev_by_index(i) == mtd)
return i;
}
}
#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++) {
+ struct mtd_info *mtd = get_nand_dev_by_index(i);
+ if (mtd != NULL) {
+ nand_info_list[nand_devices_found] = mtd;
+ 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
+
+unsigned long nand_size(void)
+{
+ return total_nand_size;
+}
+
void nand_init(void)
{
+ static int initialized;
+
+ /*
+ * Avoid initializing NAND Flash multiple times,
+ * otherwise it will calculate a wrong total size.
+ */
+ if (initialized)
+ return;
+ initialized = 1;
+
#ifdef CONFIG_SYS_NAND_SELF_INIT
board_nand_init();
#else
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]),
+ board_nand_select_device(mtd_to_nand(get_nand_dev_by_index(nand_curr_device)),
nand_curr_device);
#endif
+
+ create_mtd_concat();
}