when bootloaders and kernels console output is disabled, (called silent boot) no output on console is recommended.

Add commandline option IMX_BOOT_SILENT to disable console registration at all.

Default value is 0, so patch does not change current functionality.

Signed-off-by: Heiko Schocher hs@denx.de --- I just added this to imx8mp, but may this option is useful on other platforms too?

plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c | 4 ++++ plat/imx/imx8m/imx8mp/platform.mk | 3 +++ 2 files changed, 7 insertions(+)

diff --git a/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c b/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c index 22fbd5e4b..d75143270 100644 --- a/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c +++ b/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c @@ -95,7 +95,9 @@ static void bl31_tzc380_setup(void) void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_t arg2, u_register_t arg3) { +#if (IMX_BOOT_SILENT == 0) static console_t console; +#endif unsigned int i;

/* Enable CSU NS access permission */ @@ -109,10 +111,12 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,

imx8m_caam_init();

+#if (IMX_BOOT_SILENT == 0) console_imx_uart_register(IMX_BOOT_UART_BASE, IMX_BOOT_UART_CLK_IN_HZ, IMX_CONSOLE_BAUDRATE, &console); /* This console is only used for boot stage */ console_set_scope(&console, CONSOLE_FLAG_BOOT); +#endif

/* * tell BL3-1 where the non-secure software image is located diff --git a/plat/imx/imx8m/imx8mp/platform.mk b/plat/imx/imx8m/imx8mp/platform.mk index 1d11e3df4..471c96e70 100644 --- a/plat/imx/imx8m/imx8mp/platform.mk +++ b/plat/imx/imx8m/imx8mp/platform.mk @@ -54,3 +54,6 @@ $(eval $(call add_define,BL32_SIZE))

IMX_BOOT_UART_BASE ?= 0x30890000 $(eval $(call add_define,IMX_BOOT_UART_BASE)) + +IMX_BOOT_SILENT ?= 0 +$(eval $(call add_define,IMX_BOOT_SILENT))