X-Git-Url: http://git.ozlabs.org/?p=yaboot.git;a=blobdiff_plain;f=second%2Ffs_of.c;h=13f5e2cd93acc1b7ec8292a59e7a15b694251dc9;hp=3a8819c4b83f82c9342848712edb7fd5f311ec49;hb=f70d675c9b833e57b605fc94702cd66e97c717f5;hpb=caa5b9fc39eab729963d70d9910b6319a866fae4

diff --git a/second/fs_of.c b/second/fs_of.c
index 3a8819c..13f5e2c 100644
--- a/second/fs_of.c
+++ b/second/fs_of.c
@@ -44,20 +44,21 @@
 #include "errors.h"
 #include "debug.h"
 
-#define LOAD_BUFFER_SIZE	0x1800000
+#define LOAD_BUFFER_SIZE	0x2000000
 
 static int of_open(struct boot_file_t* file,
 		   struct partition_t* part, struct boot_fspec_t* fspec);
 static int of_read(struct boot_file_t* file, unsigned int size, void* buffer);
 static int of_seek(struct boot_file_t* file, unsigned int newpos);
 static int of_close(struct boot_file_t* file);
+static int of_ino_size(struct boot_file_t* file, unsigned int *size);
 
 
 static int of_net_open(struct boot_file_t* file,
 		       struct partition_t* part, struct boot_fspec_t* fspec);
 static int of_net_read(struct boot_file_t* file, unsigned int size, void* buffer);
 static int of_net_seek(struct boot_file_t* file, unsigned int newpos);
-static unsigned int of_net_ino_size(struct boot_file_t* file);
+static int of_net_ino_size(struct boot_file_t* file, unsigned int *size);
 
 
 struct fs_t of_filesystem =
@@ -66,7 +67,8 @@ struct fs_t of_filesystem =
      of_open,
      of_read,
      of_seek,
-     of_close
+     of_close,
+     of_ino_size,
 };
 
 struct fs_t of_net_filesystem =
@@ -122,6 +124,8 @@ of_open(struct boot_file_t* file,
 
      file->pos = 0;
      file->buffer = NULL;
+     file->devspec_cache = strdup(buffer);
+
      if ((file->of_device == PROM_INVALID_HANDLE) || (file->of_device == 0))
      {
 	  DEBUG_LEAVE(FILE_ERR_BAD_FSYS);
@@ -140,6 +144,8 @@ of_net_open(struct boot_file_t* file,
      char               *filename = NULL;
      char               *p;
      int                new_tftp;
+     prom_handle        root;
+     ihandle            prom_net;
 
      DEBUG_ENTER;
      DEBUG_OPEN;
@@ -161,11 +167,14 @@ of_net_open(struct boot_file_t* file,
      if (fspec->dev[strlen(fspec->dev)-1] != ':')
           strcat(buffer, ":");
 
-     /* If /packages/cas exists the we have a "new skool" tftp.
+     /* If /ibm,fw-net-compatibility exists the we have a "new skool" tftp.
       * This means that siaddr is the tftp server and that we can add
       * {tftp,bootp}_retrys, subnet mask and tftp block size to the load
       * method */
-     new_tftp = (prom_finddevice("/packages/cas") != PROM_INVALID_HANDLE);
+     new_tftp = 0;
+     root = prom_finddevice("/");
+     if (prom_getprop(root, "ibm,fw-net-compatibility", &prom_net, sizeof(ihandle)) > 0)
+          new_tftp = 1;
      DEBUG_F("Using %s tftp style\n", (new_tftp? "new": "old"));
 
      if (new_tftp) {
@@ -290,10 +299,45 @@ of_close(struct boot_file_t* file)
      return 0;
 }
 
-static unsigned int
-of_net_ino_size(struct boot_file_t* file)
+static int
+of_ino_size(struct boot_file_t* file, unsigned int *size)
+{
+     static char buffer[1<<20];
+     int read_count = 0;
+
+     if (file->len == 0) {
+          DEBUG_F("Estimating size of: %p\n", file->of_device);
+          while (prom_read(file->of_device, (void *)&buffer, sizeof(buffer))
+                 != 0) {
+               read_count++;
+               DEBUG_F("read_count == %d\n", read_count);
+          }
+          file->pos = 0;
+          file->len = read_count * sizeof(buffer);
+          /* sigh:
+           * prom_seek(file->of_device, file->pos);
+           * doen't work */
+          prom_close(file->of_device);
+          DEBUG_F("Re-Opening: \"%s\"\n", file->devspec_cache);
+          file->of_device = prom_open(file->devspec_cache);
+          DEBUG_F("file->of_device = %p\n", file->of_device);
+          if (file->of_device == 0) {
+               file->len = 0;
+               return FILE_IOERR;
+          }
+     }
+
+     DEBUG_F("Estimated size is: %Lu(%d)\n", (unsigned long long)file->len,
+             read_count);
+     *size = file->len;
+     return FILE_ERR_OK;
+}
+
+static int
+of_net_ino_size(struct boot_file_t* file, unsigned int *size)
 {
-	return file->len;
+	*size = file->len;
+	return FILE_ERR_OK;
 }
 
 /*