SPEAr: Change the default environment variables

[u-boot] / common / cmd_sf.c

diff --git a/common/cmd_sf.c b/common/cmd_sf.c
index 72256567d32089a154b7c58edb3fda9e61acd486..9c76464a9a84a72862d97e4d1235f57785cb1e7b 100644 (file)
--- a/common/cmd_sf.c
+++ b/common/cmd_sf.c
@@ -17,6 +17,12 @@
 #ifndef CONFIG_SF_DEFAULT_MODE
 # define CONFIG_SF_DEFAULT_MODE                SPI_MODE_3
 #endif
+#ifndef CONFIG_SF_DEFAULT_CS
+# define CONFIG_SF_DEFAULT_CS          0
+#endif
+#ifndef CONFIG_SF_DEFAULT_BUS
+# define CONFIG_SF_DEFAULT_BUS         0
+#endif
 
 static struct spi_flash *flash;
 
@@ -63,27 +69,26 @@ static int sf_parse_len_arg(char *arg, ulong *len)
 
 static int do_spi_flash_probe(int argc, char * const argv[])
 {
-       unsigned int bus = 0;
-       unsigned int cs;
+       unsigned int bus = CONFIG_SF_DEFAULT_BUS;
+       unsigned int cs = CONFIG_SF_DEFAULT_CS;
        unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
        unsigned int mode = CONFIG_SF_DEFAULT_MODE;
        char *endp;
        struct spi_flash *new;
 
-       if (argc < 2)
-               return -1;
-
-       cs = simple_strtoul(argv[1], &endp, 0);
-       if (*argv[1] == 0 || (*endp != 0 && *endp != ':'))
-               return -1;
-       if (*endp == ':') {
-               if (endp[1] == 0)
-                       return -1;
-
-               bus = cs;
-               cs = simple_strtoul(endp + 1, &endp, 0);
-               if (*endp != 0)
+       if (argc >= 2) {
+               cs = simple_strtoul(argv[1], &endp, 0);
+               if (*argv[1] == 0 || (*endp != 0 && *endp != ':'))
                        return -1;
+               if (*endp == ':') {
+                       if (endp[1] == 0)
+                               return -1;
+
+                       bus = cs;
+                       cs = simple_strtoul(endp + 1, &endp, 0);
+                       if (*endp != 0)
+                               return -1;
+               }
        }
 
        if (argc >= 3) {
@@ -127,12 +132,12 @@ static int do_spi_flash_probe(int argc, char * const argv[])
 static const char *spi_flash_update_block(struct spi_flash *flash, u32 offset,
                size_t len, const char *buf, char *cmp_buf, size_t *skipped)
 {
-       debug("offset=%#x, sector_size=%#x, len=%#x\n",
+       debug("offset=%#x, sector_size=%#x, len=%#zx\n",
                offset, flash->sector_size, len);
        if (spi_flash_read(flash, offset, len, cmp_buf))
                return "read";
        if (memcmp(cmp_buf, buf, len) == 0) {
-               debug("Skip region %x size %x: no change\n",
+               debug("Skip region %x size %zx: no change\n",
                        offset, len);
                *skipped += len;
                return NULL;
@@ -293,13 +298,13 @@ done:
                return ret;
 
 usage:
-       return cmd_usage(cmdtp);
+       return CMD_RET_USAGE;
 }
 
 U_BOOT_CMD(
        sf,     5,      1,      do_spi_flash,
        "SPI flash sub-system",
-       "probe [bus:]cs [hz] [mode]     - init flash device on given SPI bus\n"
+       "probe [[bus:]cs] [hz] [mode]   - init flash device on given SPI bus\n"
        "                                 and chip select\n"
        "sf read addr offset len        - read `len' bytes starting at\n"
        "                                 `offset' to memory at `addr'\n"