colibri_imx6: fix video stdout in default environment

[oweals/u-boot.git] / api / api.c

diff --git a/api/api.c b/api/api.c
index bc9454eb4b631e81f78f9fd033c24b019e77fb7f..c7f5db776af9d9e80fe1ac7fcb6718627d48589f 100644 (file)
--- a/api/api.c
+++ b/api/api.c
@@ -11,8 +11,10 @@
 #include <env.h>
 #include <malloc.h>
 #include <env_internal.h>
+#include <linux/delay.h>
 #include <linux/types.h>
 #include <api_public.h>
+#include <u-boot/crc.h>
 
 #include "api_private.h"
 
@@ -295,27 +297,31 @@ static int API_dev_close(va_list ap)
 
 
 /*
- * Notice: this is for sending network packets only, as U-Boot does not
- * support writing to storage at the moment (12.2007)
- *
  * pseudo signature:
  *
  * int API_dev_write(
  *     struct device_info *di,
  *     void *buf,
- *     int *len
+ *     int *len,
+ *     unsigned long *start
  * )
  *
  * buf:        ptr to buffer from where to get the data to send
  *
- * len: length of packet to be sent (in bytes)
+ * len: ptr to length to be read
+ *      - network: len of packet to be sent (in bytes)
+ *      - storage: # of blocks to write (can vary in size depending on define)
  *
+ * start: ptr to start block (only used for storage devices, ignored for
+ *        network)
  */
 static int API_dev_write(va_list ap)
 {
        struct device_info *di;
        void *buf;
-       int *len;
+       lbasize_t *len_stor, act_len_stor;
+       lbastart_t *start;
+       int *len_net;
        int err = 0;
 
        /* 1. arg is ptr to the device_info struct */
@@ -333,23 +339,36 @@ static int API_dev_write(va_list ap)
        if (buf == NULL)
                return API_EINVAL;
 
-       /* 3. arg is length of buffer */
-       len = (int *)va_arg(ap, uintptr_t);
-       if (len == NULL)
-               return API_EINVAL;
-       if (*len <= 0)
-               return API_EINVAL;
+       if (di->type & DEV_TYP_STOR) {
+               /* 3. arg - ptr to var with # of blocks to write */
+               len_stor = (lbasize_t *)va_arg(ap, uintptr_t);
+               if (!len_stor)
+                       return API_EINVAL;
+               if (*len_stor <= 0)
+                       return API_EINVAL;
 
-       if (di->type & DEV_TYP_STOR)
-               /*
-                * write to storage is currently not supported by U-Boot:
-                * no storage device implements block_write() method
-                */
-               return API_ENODEV;
+               /* 4. arg - ptr to var with start block */
+               start = (lbastart_t *)va_arg(ap, uintptr_t);
 
-       else if (di->type & DEV_TYP_NET)
-               err = dev_write_net(di->cookie, buf, *len);
-       else
+               act_len_stor = dev_write_stor(di->cookie, buf, *len_stor, *start);
+               if (act_len_stor != *len_stor) {
+                       debugf("write @ %llu: done %llu out of %llu blocks",
+                                  (uint64_t)blk, (uint64_t)act_len_stor,
+                                  (uint64_t)len_stor);
+                       return API_EIO;
+               }
+
+       } else if (di->type & DEV_TYP_NET) {
+               /* 3. arg points to the var with length of packet to write */
+               len_net = (int *)va_arg(ap, uintptr_t);
+               if (!len_net)
+                       return API_EINVAL;
+               if (*len_net <= 0)
+                       return API_EINVAL;
+
+               err = dev_write_net(di->cookie, buf, *len_net);
+
+       } else
                err = API_ENODEV;
 
        return err;