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authorSimon Glass <sjg@chromium.org>2016-07-04 11:57:45 -0600
committerSimon Glass <sjg@chromium.org>2016-07-14 20:40:24 -0600
commitd4e33f5a72accc891e3600cb2d2bc579004de9e1 (patch)
tree7b3cbcbe5f88bb1e3e9699373cef23a0e5dd431f /include/os.h
parent72a7e0760447ed46ca50174cb8798a2e84dedf85 (diff)
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sandbox: Allow chaining from SPL to U-Boot proper
SPL is expected to load and run U-Boot. This needs to work with sandbox also. Provide a function to locate the U-Boot image, and another to start it. This allows SPL to function on sandbox as it does on other archs. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/os.h')
-rw-r--r--include/os.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/os.h b/include/os.h
index 954a48c..1782e50 100644
--- a/include/os.h
+++ b/include/os.h
@@ -287,6 +287,31 @@ int os_read_ram_buf(const char *fname);
int os_jump_to_image(const void *dest, int size);
/**
+ * os_find_u_boot() - Determine the path to U-Boot proper
+ *
+ * This function is intended to be called from within sandbox SPL. It uses
+ * a few heuristics to find U-Boot proper. Normally it is either in the same
+ * directory, or the directory above (since u-boot-spl is normally in an
+ * spl/ subdirectory when built).
+ *
+ * @fname: Place to put full path to U-Boot
+ * @maxlen: Maximum size of @fname
+ * @return 0 if OK, -NOSPC if the filename is too large, -ENOENT if not found
+ */
+int os_find_u_boot(char *fname, int maxlen);
+
+/**
+ * os_spl_to_uboot() - Run U-Boot proper
+ *
+ * When called from SPL, this runs U-Boot proper. The filename is obtained by
+ * calling os_find_u_boot().
+ *
+ * @fname: Full pathname to U-Boot executable
+ * @return 0 if OK, -ve on error
+ */
+int os_spl_to_uboot(const char *fname);
+
+/**
* Read the current system time
*
* This reads the current Local Time and places it into the provided