for (;;);
}
+/* Translate an OF filesystem path (separated by backslashes), into a GRUB
+ path (separated by forward slashes). */
+static void
+grub_translate_ieee1275_path (char *filepath)
+{
+ char *backslash;
+
+ backslash = grub_strchr (filepath, '\\');
+ while (backslash != 0)
+ {
+ *backslash = '/';
+ backslash = grub_strchr (filepath, '\\');
+ }
+}
+
+static void
+grub_set_prefix (void)
+{
+ char bootpath[64]; /* XXX check length */
+ char *filename;
+ char *prefix;
+ grub_ieee1275_phandle_t chosen;
+
+ grub_ieee1275_finddevice ("/chosen", &chosen);
+ if (grub_ieee1275_get_property (chosen, "bootpath", &bootpath,
+ sizeof (bootpath), 0))
+ {
+ /* Should never happen. */
+ grub_printf ("/chosen/bootpath property missing!\n");
+ grub_env_set ("prefix", "");
+ return;
+ }
+
+ /* Transform an OF device path to a GRUB path. */
+
+ prefix = grub_ieee1275_encode_devname (bootpath);
+
+ filename = grub_ieee1275_get_filename (bootpath);
+ if (filename)
+ {
+ char *newprefix;
+ char *lastslash = grub_strrchr (filename, '\\');
+
+ /* Truncate at last directory. */
+ if (lastslash)
+ {
+ *lastslash = '\0';
+ grub_translate_ieee1275_path (filename);
+
+ newprefix = grub_malloc (grub_strlen (prefix)
+ + grub_strlen (filename));
+ grub_sprintf (newprefix, "%s%s", prefix, filename);
+ grub_free (prefix);
+ prefix = newprefix;
+ }
+ }
+
+ grub_env_set ("prefix", prefix);
+
+ grub_free (filename);
+ grub_free (prefix);
+}
+
void
grub_machine_init (void)
{
}
grub_mm_init_region ((void *) grub_heap_start, grub_heap_len);
- grub_env_set ("prefix", "");
+ grub_set_prefix ();
grub_ofdisk_init ();
}
#include <grub/mm.h>
#include <grub/machine/ieee1275.h>
+enum grub_ieee1275_parse_type
+{
+ GRUB_PARSE_FILENAME,
+ GRUB_PARSE_PARTITION,
+};
+
/* Walk children of 'devpath', calling hook for each. */
grub_err_t
grub_children_iterate (char *devpath,
if (actual == -1)
continue;
- grub_sprintf(fullname, "%s/%s", devpath, childname);
+ grub_sprintf (fullname, "%s/%s", devpath, childname);
alias.type = childtype;
alias.path = childpath;
return 0;
}
-/* Iterate through all device aliasses. Thisfunction can be used to
+/* Iterate through all device aliases. This function can be used to
find a device of a specific type. */
grub_err_t
grub_devalias_iterate (int (*hook) (struct grub_ieee1275_devalias *alias))
return 0;
}
+/* Get the device arguments of the Open Firmware node name `path'. */
+static char *
+grub_ieee1275_get_devargs (const char *path)
+{
+ char *colon = grub_strchr (path, ':');
+
+ if (! colon)
+ return 0;
+
+ return grub_strdup (colon + 1);
+}
+
+/* Get the device path of the Open Firmware node name `path'. */
+static char *
+grub_ieee1275_get_devname (const char *path)
+{
+ char *colon = grub_strchr (path, ':');
+ char *newpath = 0;
+ int pathlen = grub_strlen (path);
+ auto int match_alias (struct grub_ieee1275_devalias *alias);
+
+ int match_alias (struct grub_ieee1275_devalias *curalias)
+ {
+ /* briQ firmware can change capitalization in /chosen/bootpath. */
+ if (! grub_strncasecmp (curalias->path, path, pathlen))
+ {
+ newpath = grub_strndup (curalias->name, grub_strlen (curalias->name));
+ return 1;
+ }
+
+ return 0;
+ }
+
+ if (colon)
+ pathlen = (int)(colon - path);
+
+ /* Try to find an alias for this device. */
+ grub_devalias_iterate (match_alias);
+
+ if (! newpath)
+ newpath = grub_strdup (path);
+
+ return newpath;
+}
+
+static char *
+grub_ieee1275_parse_args (const char *path, enum grub_ieee1275_parse_type ptype)
+{
+ char type[64]; /* XXX check size. */
+ char *device = grub_ieee1275_get_devname (path);
+ char *args = grub_ieee1275_get_devargs (path);
+ char *ret = 0;
+ grub_ieee1275_phandle_t dev;
+
+ if (!args)
+ /* Shouldn't happen. */
+ return 0;
+
+ /* We need to know what type of device it is in order to parse the full
+ file path properly. */
+ if (grub_ieee1275_finddevice (device, &dev))
+ {
+ grub_error (GRUB_ERR_UNKNOWN_DEVICE, "Device %s not found\n", device);
+ goto fail;
+ }
+ if (grub_ieee1275_get_property (dev, "device_type", &type, sizeof type, 0))
+ {
+ grub_error (GRUB_ERR_UNKNOWN_DEVICE,
+ "Device %s lacks a device_type property\n", device);
+ goto fail;
+ }
+
+ if (!grub_strcmp ("block", type))
+ {
+ /* The syntax of the device arguments is defined in the CHRP and PReP
+ IEEE1275 bindings: "[partition][,[filename]]". */
+ char *comma = grub_strchr (args, ',');
+
+ if (ptype == GRUB_PARSE_FILENAME)
+ {
+ if (comma)
+ {
+ char *filepath = comma + 1;
+
+ ret = grub_malloc (grub_strlen (filepath) + 1);
+ /* Make sure filepath has leading backslash. */
+ if (filepath[0] != '\\')
+ grub_sprintf (ret, "\\%s", filepath);
+ else
+ grub_strcpy (ret, filepath);
+ }
+ }
+ else if (ptype == GRUB_PARSE_PARTITION)
+ {
+ if (!comma)
+ ret = grub_strdup (args);
+ else
+ ret = grub_strndup (args, (grub_size_t)(comma - args));
+ }
+ }
+ else
+ {
+ /* XXX Handle net devices by configuring & registering a grub_net_dev
+ here, then return its name?
+ Example path: "net:<server ip>,<file name>,<client ip>,<gateway
+ ip>,<bootp retries>,<tftp retries>". */
+ grub_printf ("Unsupported type %s for device %s\n", type, device);
+ }
+
+fail:
+ grub_free (device);
+ grub_free (args);
+ return ret;
+}
+
+char *
+grub_ieee1275_get_filename (const char *path)
+{
+ return grub_ieee1275_parse_args (path, GRUB_PARSE_FILENAME);
+}
+
+/* Convert a device name from IEEE1275 syntax to GRUB syntax. */
+char *
+grub_ieee1275_encode_devname (const char *path)
+{
+ char *device = grub_ieee1275_get_devname (path);
+ char *partition = grub_ieee1275_parse_args (path, GRUB_PARSE_PARTITION);
+ char *encoding;
+
+ if (partition)
+ {
+ unsigned int partno = grub_strtoul (partition, 0, 0);
+ partno--; /* GRUB partition numbering is 0-based. */
+
+ /* Assume partno will require less than five bytes to encode. */
+ encoding = grub_malloc (grub_strlen (device) + 3 + 5);
+ grub_sprintf (encoding, "(%s,%d)", device, partno);
+ }
+ else
+ {
+ encoding = grub_malloc (grub_strlen (device) + 2);
+ grub_sprintf (encoding, "(%s)", device);
+ }
+
+ grub_free (partition);
+ grub_free (device);
+
+ return encoding;
+}
+
void
grub_reboot (void)
{
projects / thirdparty / grub.git / commitdiff
