dm: blk: Add a easier way to create a named block device

[people/ms/u-boot.git] / common / fdt_support.c

diff --git a/common/fdt_support.c b/common/fdt_support.c
index 10648b5a4a86e0d94765b94b02af7b0e4ca9fc76..42e5d8a1d2f697ae9509d1767fce7a7a28a00a2b 100644 (file)
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -16,6 +16,7 @@
 #include <libfdt.h>
 #include <fdt_support.h>
 #include <exports.h>
+#include <fdtdec.h>
 
 /**
  * fdt_getprop_u32_default_node - Return a node's property or a default
@@ -130,18 +131,6 @@ static int fdt_fixup_stdout(void *fdt, int chosenoff)
                              OF_STDOUT_PATH, strlen(OF_STDOUT_PATH) + 1);
 }
 #elif defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX)
-static void fdt_fill_multisername(char *sername, size_t maxlen)
-{
-       const char *outname = stdio_devices[stdout]->name;
-
-       if (strcmp(outname, "serial") > 0)
-               strncpy(sername, outname, maxlen);
-
-       /* eserial? */
-       if (strcmp(outname + 1, "serial") > 0)
-               strncpy(sername, outname + 1, maxlen);
-}
-
 static int fdt_fixup_stdout(void *fdt, int chosenoff)
 {
        int err;
@@ -151,32 +140,35 @@ static int fdt_fixup_stdout(void *fdt, int chosenoff)
        int len;
        char tmp[256]; /* long enough */
 
-       fdt_fill_multisername(sername, sizeof(sername) - 1);
-       if (!sername[0])
-               sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
+       sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
 
        aliasoff = fdt_path_offset(fdt, "/aliases");
        if (aliasoff < 0) {
                err = aliasoff;
-               goto error;
+               goto noalias;
        }
 
        path = fdt_getprop(fdt, aliasoff, sername, &len);
        if (!path) {
                err = len;
-               goto error;
+               goto noalias;
        }
 
        /* fdt_setprop may break "path" so we copy it to tmp buffer */
        memcpy(tmp, path, len);
 
        err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len);
-error:
        if (err < 0)
                printf("WARNING: could not set linux,stdout-path %s.\n",
                       fdt_strerror(err));
 
        return err;
+
+noalias:
+       printf("WARNING: %s: could not read %s alias: %s\n",
+              __func__, sername, fdt_strerror(err));
+
+       return 0;
 }
 #else
 static int fdt_fixup_stdout(void *fdt, int chosenoff)
@@ -454,6 +446,9 @@ int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
                return err;
        }
 
+       if (!banks)
+               return 0;
+
        len = fdt_pack_reg(blob, tmp, start, size, banks);
 
        err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
@@ -472,48 +467,58 @@ int fdt_fixup_memory(void *blob, u64 start, u64 size)
 
 void fdt_fixup_ethernet(void *fdt)
 {
-       int node, i, j;
-       char enet[16], *tmp, *end;
+       int i, j, prop;
+       char *tmp, *end;
        char mac[16];
        const char *path;
        unsigned char mac_addr[6];
+       int offset;
 
-       node = fdt_path_offset(fdt, "/aliases");
-       if (node < 0)
+       if (fdt_path_offset(fdt, "/aliases") < 0)
                return;
 
-       if (!getenv("ethaddr")) {
-               if (getenv("usbethaddr")) {
-                       strcpy(mac, "usbethaddr");
-               } else {
-                       debug("No ethernet MAC Address defined\n");
-                       return;
-               }
-       } else {
-               strcpy(mac, "ethaddr");
-       }
+       /* Cycle through all aliases */
+       for (prop = 0; ; prop++) {
+               const char *name;
+               int len = strlen("ethernet");
 
-       i = 0;
-       while ((tmp = getenv(mac)) != NULL) {
-               sprintf(enet, "ethernet%d", i);
-               path = fdt_getprop(fdt, node, enet, NULL);
-               if (!path) {
-                       debug("No alias for %s\n", enet);
-                       sprintf(mac, "eth%daddr", ++i);
-                       continue;
-               }
+               /* FDT might have been edited, recompute the offset */
+               offset = fdt_first_property_offset(fdt,
+                       fdt_path_offset(fdt, "/aliases"));
+               /* Select property number 'prop' */
+               for (i = 0; i < prop; i++)
+                       offset = fdt_next_property_offset(fdt, offset);
 
-               for (j = 0; j < 6; j++) {
-                       mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
-                       if (tmp)
-                               tmp = (*end) ? end+1 : end;
-               }
+               if (offset < 0)
+                       break;
 
-               do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
-               do_fixup_by_path(fdt, path, "local-mac-address",
-                               &mac_addr, 6, 1);
+               path = fdt_getprop_by_offset(fdt, offset, &name, NULL);
+               if (!strncmp(name, "ethernet", len)) {
+                       i = trailing_strtol(name);
+                       if (i != -1) {
+                               if (i == 0)
+                                       strcpy(mac, "ethaddr");
+                               else
+                                       sprintf(mac, "eth%daddr", i);
+                       } else {
+                               continue;
+                       }
+                       tmp = getenv(mac);
+                       if (!tmp)
+                               continue;
+
+                       for (j = 0; j < 6; j++) {
+                               mac_addr[j] = tmp ?
+                                             simple_strtoul(tmp, &end, 16) : 0;
+                               if (tmp)
+                                       tmp = (*end) ? end + 1 : end;
+                       }
 
-               sprintf(mac, "eth%daddr", ++i);
+                       do_fixup_by_path(fdt, path, "mac-address",
+                                        &mac_addr, 6, 0);
+                       do_fixup_by_path(fdt, path, "local-mac-address",
+                                        &mac_addr, 6, 1);
+               }
        }
 }
 
@@ -942,7 +947,7 @@ void fdt_del_node_and_alias(void *blob, const char *alias)
 
 /* Max address size we deal with */
 #define OF_MAX_ADDR_CELLS      4
-#define OF_BAD_ADDR    ((u64)-1)
+#define OF_BAD_ADDR    FDT_ADDR_T_NONE
 #define OF_CHECK_COUNTS(na, ns)        ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \
                        (ns) > 0)