[U-Boot] [PATCH v4 01/15] Revert "sandbox: remove os_putc() and os_puts()"

[Simon Glass <sjg@chromium.org>]

While sandbox works OK without the special-case code, it does result in
console output being stored in the pre-console buffer while sandbox starts
up. If there is a crash or a problem then there is no indication of what
is going on.

For ease of debugging it seems better to revert this change.

This reverts commit 47b98ad0f6779485d0f0c14f337c3eece273eb54.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

 arch/sandbox/cpu/os.c | 11 +++++++++++
 include/os.h          | 20 ++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index c524957b6c..9dd90a1b30 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -421,6 +421,17 @@ int os_get_filesize(const char *fname, loff_t *size)
 	return 0;
 }
 
+void os_putc(int ch)
+{
+	putchar(ch);
+}
+
+void os_puts(const char *str)
+{
+	while (*str)
+		os_putc(*str++);
+}
+
 int os_write_ram_buf(const char *fname)
 {
 	struct sandbox_state *state = state_get_current();
diff --git a/include/os.h b/include/os.h
index 2bf4bdb1b8..049b248c5b 100644
--- a/include/os.h
+++ b/include/os.h
@@ -240,6 +240,26 @@ const char *os_dirent_get_typename(enum os_dirent_t type);
  */
 int os_get_filesize(const char *fname, loff_t *size);
 
+/**
+ * Write a character to the controlling OS terminal
+ *
+ * This bypasses the U-Boot console support and writes directly to the OS
+ * stdout file descriptor.
+ *
+ * @param ch	Character to write
+ */
+void os_putc(int ch);
+
+/**
+ * Write a string to the controlling OS terminal
+ *
+ * This bypasses the U-Boot console support and writes directly to the OS
+ * stdout file descriptor.
+ *
+ * @param str	String to write (note that \n is not appended)
+ */
+void os_puts(const char *str);
+
 /**
  * Write the sandbox RAM buffer to a existing file
  *
-- 
2.15.0.531.g2ccb3012c9-goog