Support disabling serial output

On systems without serial port, currently efiwrapper still tries to initialize serial output, causing boot hang. A new serail_type 0 is added to support disabling serial output by command line. Tracked-On: OAM-114713 Signed-off-by: Jiaqing Zhao <[email protected]>
projectceladon · Jan 9, 2024 · a5a8ecc · a5a8ecc
1 parent bdd4f65
commit a5a8ecc
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/drivers/s8250mem32/s8250mem32.c b/drivers/s8250mem32/s8250mem32.c
@@ -41,6 +41,8 @@
 #define SBL_SERIAL_TYPE "serail_type"
 #define SBL_SERIAL_REGWIDTH "serail_regwidth"
 
+#define SBL_SERIAL_TYPE_DISABLED 0
+
 #ifndef SERIAL_BASEADDR
 #include <pci/pci.h>
 #define SERIAL_BASEADDR       GetPciUartBase(SERIAL_PCI_DID)
@@ -83,6 +85,10 @@ static EFI_STATUS s8250mem32_init(__attribute__((__unused__)) EFI_SYSTEM_TABLE *
 		s.regwidth = HW_SERIAL_REG_WIDTH;
 	}
 
+	if (s.type == SBL_SERIAL_TYPE_DISABLED) {
+		return EFI_SUCCESS;
+	}
+
 	lib_sysinfo.serial = &s;
 
 	serial_console_init();