From 77ecf95f22dc5cb0a9709805dd22555007d60b34 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 17 Sep 2019 22:04:57 -0300 Subject: pico-imx6: Add Falcon mode Add Falcon mode support, which allows the SPL to load and jump to the Linux kernel directly, without the need of loading U-Boot proper. CONFIG_SPL_OS_BOOT=y needs to be passed in the defconfig in order to use Falcon mode. Signed-off-by: Fabio Estevam Signed-off-by: Otavio Salvador --- board/technexion/pico-imx6/spl.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'board/technexion') diff --git a/board/technexion/pico-imx6/spl.c b/board/technexion/pico-imx6/spl.c index 5bf87023ac..06ad0a8c32 100644 --- a/board/technexion/pico-imx6/spl.c +++ b/board/technexion/pico-imx6/spl.c @@ -27,6 +27,17 @@ #define IMX6DQ_DRIVE_STRENGTH 0x30 #define IMX6SDL_DRIVE_STRENGTH 0x28 +#ifdef CONFIG_SPL_OS_BOOT +int spl_start_uboot(void) +{ + /* Break into full U-Boot on 'c' */ + if (serial_tstc() && serial_getc() == 'c') + return 1; + + return 0; +} +#endif + /* configure MX6Q/DUAL mmdc DDR io registers */ static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = { .dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH, -- cgit v1.2.3