diff options
Diffstat (limited to 'arch/arm/boards/embest-marsboard/lowlevel.c')
-rw-r--r-- | arch/arm/boards/embest-marsboard/lowlevel.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/boards/embest-marsboard/lowlevel.c b/arch/arm/boards/embest-marsboard/lowlevel.c new file mode 100644 index 0000000000..9e20a2ec06 --- /dev/null +++ b/arch/arm/boards/embest-marsboard/lowlevel.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Ahmad Fatoum - Pengutronix + */ + +#include <common.h> +#include <io.h> +#include <asm/barebox-arm.h> +#include <mach/imx6.h> +#include <mach/esdctl.h> +#include <mach/iomux-mx6.h> +#include <debug_ll.h> + +static inline void setup_uart(void) +{ + void __iomem *iomuxbase = IOMEM(MX6_IOMUXC_BASE_ADDR); + + imx6_ungate_all_peripherals(); + + imx_setup_pad(iomuxbase, MX6Q_PAD_EIM_D26__UART2_TXD); + + imx6_uart_setup_ll(); + + putc_ll('>'); +} + +extern char __dtb_z_imx6q_marsboard_start[]; + +ENTRY_FUNCTION(start_imx6q_marsboard, r0, r1, r2) +{ + void *fdt; + + imx6_cpu_lowlevel_init(); + + if (IS_ENABLED(CONFIG_DEBUG_LL)) + setup_uart(); + + fdt = __dtb_z_imx6q_marsboard_start + get_runtime_offset(); + + imx6q_barebox_entry(fdt); +} |