When the serial console is disabled in coreboot configuration, no display output is observed during boot.
This happens because DBG2 (Debug Port 2 table) configuration is required for proper UART initialization and affects the video initialization path. Fix this by ensuring DBG2 is correctly configured as a 16550-compatible UART, allowing video initialization to proceed independently of serial console settings. Signed-off-by: Desapogu Jayaramudu <[email protected]> --- include/acpi/acpi_table.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h index 4895366a618..3517698ff3e 100644 --- a/include/acpi/acpi_table.h +++ b/include/acpi/acpi_table.h @@ -667,7 +667,7 @@ struct __packed acpi_dmar { /* Subtypes for port_subtype field */ -#define ACPI_DBG2_16550_COMPATIBLE 0x0000 +#define ACPI_DBG2_16550_COMPATIBLE 0x0012 #define ACPI_DBG2_16550_SUBSET 0x0001 #define ACPI_DBG2_ARM_PL011 0x0003 #define ACPI_DBG2_ARM_SBSA_32BIT 0x000D -- 2.25.1
