summaryrefslogtreecommitdiff
path: root/arch/x86
diff options
context:
space:
mode:
authorSimon Glass <sjg@chromium.org>2015-10-18 19:51:26 -0600
committerSimon Glass <sjg@chromium.org>2015-10-21 07:46:50 -0600
commit60994a02a56fd7dc408b0a36ad5dead1b85959b4 (patch)
tree82b9a630e970308afe22ed04bb476494cd302351 /arch/x86
parentc7fefcb9125bbd183dc095996c6747273043d988 (diff)
x86: Init the debug UART if enabled
If the debug UART is enabled, get it ready for use at the earliest possible opportunity. This is not actually very early, but until we have a stack it is difficult to make it work. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/cpu/start.S11
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S
index d072825bcd..5b4ee79d88 100644
--- a/arch/x86/cpu/start.S
+++ b/arch/x86/cpu/start.S
@@ -126,14 +126,9 @@ car_init_ret:
call board_init_f_mem
mov %eax, %esp
- /*
- * Debug UART is available here although it may not be plumbed out
- * to pins depending on the board. To use it:
- *
- * call debug_uart_init
- * mov $'a', %eax
- * call printch
- */
+#ifdef CONFIG_DEBUG_UART
+ call debug_uart_init
+#endif
/* Get address of global_data */
mov %fs:0, %edx