NAND: Make page, erase, oob size available via cmd_nand

The "nand info" and "nand device" now set shell/environment variables:
	nand_writesize ... nand page size
	nand_oobsize ..... nand oob area size
	nand_erasesize ... nand erase block size

Also, the "nand info" command now displays this info.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
[scottwood@freescale.com: removed unnecessary memsets]
Signed-off-by: Scott Wood <scottwood@freescale.com>

diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index c726bf9..3e2edb8 100644 (file)
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -362,15 +362,31 @@ usage:
 
 #endif
 
-static void nand_print_info(int idx)
+static void nand_print_and_set_info(int idx)
 {
        nand_info_t *nand = &nand_info[idx];
        struct nand_chip *chip = nand->priv;
+       const int bufsz = 32;
+       char buf[bufsz];
+
        printf("Device %d: ", idx);
        if (chip->numchips > 1)
                printf("%dx ", chip->numchips);
        printf("%s, sector size %u KiB\n",
               nand->name, nand->erasesize >> 10);
+       printf("  Page size  %8d b\n", nand->writesize);
+       printf("  OOB size   %8d b\n", nand->oobsize);
+       printf("  Erase size %8d b\n", nand->erasesize);
+
+       /* Set geometry info */
+       sprintf(buf, "%x", nand->writesize);
+       setenv("nand_writesize", buf);
+
+       sprintf(buf, "%x", nand->oobsize);
+       setenv("nand_oobsize", buf);
+
+       sprintf(buf, "%x", nand->erasesize);
+       setenv("nand_erasesize", buf);
 }
 
 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
@@ -407,7 +423,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
                putc('\n');
                for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
                        if (nand_info[i].name)
-                               nand_print_info(i);
+                               nand_print_and_set_info(i);
                }
                return 0;
        }
@@ -418,7 +434,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
                        if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
                                puts("no devices available\n");
                        else
-                               nand_print_info(dev);
+                               nand_print_and_set_info(dev);
                        return 0;
                }