From: Mugunthan V N mugunthanvnm@ti.com
nand_info is used all over the file so abstract it with get_nand_dev_by_index() which will help for DM conversion.
Signed-off-by: Mugunthan V N mugunthanvnm@ti.com Signed-off-by: Grygorii Strashko grygorii.strashko@ti.com --- cmd/nand.c | 69 +++++++++++++++++++++++++------------------- drivers/mtd/nand/nand.c | 21 ++++++++++---- drivers/mtd/nand/omap_gpmc.c | 7 ++--- include/nand.h | 9 ++++++ 4 files changed, 65 insertions(+), 41 deletions(-)
diff --git a/cmd/nand.c b/cmd/nand.c index c16ec77..f2b440e 100644 --- a/cmd/nand.c +++ b/cmd/nand.c @@ -115,20 +115,20 @@ free_dat:
static int set_dev(int dev) { - if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[dev]) { - puts("No such device\n"); - return -1; - } + struct mtd_info *mtd = get_nand_dev_by_index(dev); + + if (!mtd) + return -ENODEV;
if (nand_curr_device == dev) return 0;
- printf("Device %d: %s", dev, nand_info[dev]->name); + printf("Device %d: %s", dev, mtd->name); puts("... is now current device\n"); nand_curr_device = dev;
#ifdef CONFIG_SYS_NAND_SELECT_DEVICE - board_nand_select_device(nand_info[dev]->priv, dev); + board_nand_select_device(mtd->priv, dev); #endif
return 0; @@ -188,7 +188,7 @@ int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[]) { int ret; uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)]; - struct mtd_info *mtd = nand_info[0]; + struct mtd_info *mtd = get_nand_dev_by_index(0); char *cmd = argv[1];
if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !mtd) { @@ -213,9 +213,10 @@ int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[]) if (argc < 3) goto usage;
+ mtd = get_nand_dev_by_index(idx); /* We don't care about size, or maxsize. */ if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize, - MTD_DEV_TYPE_NAND, nand_info[idx]->size)) { + MTD_DEV_TYPE_NAND, mtd->size)) { puts("Offset or partition name expected\n"); return 1; } @@ -283,9 +284,14 @@ usage:
static void nand_print_and_set_info(int idx) { - struct mtd_info *mtd = nand_info[idx]; - struct nand_chip *chip = mtd_to_nand(mtd); + struct mtd_info *mtd; + struct nand_chip *chip; + + mtd = get_nand_dev_by_index(idx); + if (!mtd) + return;
+ chip = mtd_to_nand(mtd); printf("Device %d: ", idx); if (chip->numchips > 1) printf("%dx ", chip->numchips); @@ -348,7 +354,7 @@ static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev) /* We grab the nand info object here fresh because this is usually * called after arg_off_size() which can change the value of dev. */ - struct mtd_info *mtd = nand_info[dev]; + struct mtd_info *mtd = get_nand_dev_by_index(dev); loff_t maxoffset = offset + *size; int badblocks = 0;
@@ -397,10 +403,8 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (strcmp(cmd, "info") == 0) {
putc('\n'); - for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) { - if (nand_info[i]) - nand_print_and_set_info(i); - } + for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) + nand_print_and_set_info(i); return 0; }
@@ -432,12 +436,11 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) * one before these commands can run, even if a partition specifier * for another device is to be used. */ - if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || - !nand_info[dev]) { + mtd = get_nand_dev_by_index(dev); + if (!mtd) { puts("\nno devices available\n"); return 1; } - mtd = nand_info[dev];
if (strcmp(cmd, "bad") == 0) { printf("\nDevice %d bad blocks:\n", dev); @@ -496,13 +499,13 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) /* skip first two or three arguments, look for offset and size */ if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, - nand_info[dev]->size) != 0) + mtd->size) != 0) return 1;
if (set_dev(dev)) return 1;
- mtd = nand_info[dev]; + mtd = get_nand_dev_by_index(dev);
memset(&opts, 0, sizeof(opts)); opts.offset = off; @@ -565,13 +568,13 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, - nand_info[dev]->size)) + mtd->size)) return 1;
if (set_dev(dev)) return 1;
- mtd = nand_info[dev]; + mtd = get_nand_dev_by_index(dev);
if (argc > 4 && !str2long(argv[4], &pagecount)) { printf("'%s' is not a number\n", argv[4]); @@ -588,7 +591,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, - nand_info[dev]->size) != 0) + mtd->size) != 0) return 1;
if (set_dev(dev)) @@ -600,7 +603,7 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) rwsize = size; }
- mtd = nand_info[dev]; + mtd = get_nand_dev_by_index(dev);
if (!s || !strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i")) { @@ -760,13 +763,15 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, - nand_info[dev]->size) < 0) + mtd->size) < 0) return 1;
if (set_dev(dev)) return 1;
- if (!nand_unlock(nand_info[dev], off, size, allexcept)) { + mtd = get_nand_dev_by_index(dev); + + if (!nand_unlock(mtd, off, size, allexcept)) { puts("NAND flash successfully unlocked\n"); } else { puts("Error unlocking NAND flash, " @@ -929,6 +934,7 @@ static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc, char *boot_device = NULL; int idx; ulong addr, offset = 0; + struct mtd_info *mtd; #if defined(CONFIG_CMD_MTDPARTS) struct mtd_device *dev; struct part_info *part; @@ -948,8 +954,10 @@ static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc, addr = simple_strtoul(argv[1], NULL, 16); else addr = CONFIG_SYS_LOAD_ADDR; - return nand_load_image(cmdtp, nand_info[dev->id->num], - part->offset, addr, argv[0]); + + mtd = get_nand_dev_by_index(dev->id->num); + return nand_load_image(cmdtp, mtd, part->offset, + addr, argv[0]); } } #endif @@ -991,14 +999,15 @@ usage:
idx = simple_strtoul(boot_device, NULL, 16);
- if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx]) { + mtd = get_nand_dev_by_index(idx); + if (!mtd) { printf("\n** Device %d not available\n", idx); bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE); return 1; } bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
- return nand_load_image(cmdtp, nand_info[idx], offset, addr, argv[0]); + return nand_load_image(cmdtp, mtd, offset, addr, argv[0]); }
U_BOOT_CMD(nboot, 4, 1, do_nandboot, diff --git a/drivers/mtd/nand/nand.c b/drivers/mtd/nand/nand.c index 0551241..9d14fda 100644 --- a/drivers/mtd/nand/nand.c +++ b/drivers/mtd/nand/nand.c @@ -19,7 +19,6 @@ 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 @@ -31,12 +30,21 @@ static char dev_name[CONFIG_SYS_MAX_NAND_DEVICE][8];
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; }
@@ -101,8 +109,9 @@ static void create_mtd_concat(void) 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]; + struct mtd_info *mtd = get_nand_dev_by_index(i); + if (mtd != NULL) { + nand_info_list[nand_devices_found] = mtd; nand_devices_found++; } } @@ -148,7 +157,7 @@ void nand_init(void) /* * 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
diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c index f4f0de3..b540bc3 100644 --- a/drivers/mtd/nand/omap_gpmc.c +++ b/drivers/mtd/nand/omap_gpmc.c @@ -894,17 +894,14 @@ static int omap_select_ecc_scheme(struct nand_chip *nand, int __maybe_unused omap_nand_switch_ecc(uint32_t hardware, uint32_t eccstrength) { struct nand_chip *nand; - struct mtd_info *mtd; + struct mtd_info *mtd = get_nand_dev_by_index(nand_curr_device); int err = 0;
- if (nand_curr_device < 0 || - nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE || - !nand_info[nand_curr_device]) { + if (!mtd) { printf("nand: error: no NAND devices found\n"); return -ENODEV; }
- mtd = nand_info[nand_curr_device]; nand = mtd_to_nand(mtd); nand->options |= NAND_OWN_BUFFERS; nand->options &= ~NAND_SUBPAGE_READ; diff --git a/include/nand.h b/include/nand.h index b6eb223..6c785a0 100644 --- a/include/nand.h +++ b/include/nand.h @@ -145,3 +145,12 @@ int spl_nand_erase_one(int block, int page);
/* platform specific init functions */ void sunxi_nand_init(void); + +/* + * get_nand_dev_by_index - Get the nand info based in index. + * + * @dev - index to the nand device. + * + * returns pointer to the nand device info structure or NULL on failure. + */ +struct mtd_info *get_nand_dev_by_index(int dev);