diff options
Diffstat (limited to 'board/raspberrypi/rpi/lowlevel_init.S')
| -rw-r--r-- | board/raspberrypi/rpi/lowlevel_init.S | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/board/raspberrypi/rpi/lowlevel_init.S b/board/raspberrypi/rpi/lowlevel_init.S new file mode 100644 index 0000000..cdbd8e1 --- /dev/null +++ b/board/raspberrypi/rpi/lowlevel_init.S @@ -0,0 +1,36 @@ +/* + * (C) Copyright 2016 + * Cédric Schieli <cschieli@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> + +.align 8 +.global fw_dtb_pointer +fw_dtb_pointer: +#ifdef CONFIG_ARM64 + .dword 0x0 +#else + .word 0x0 +#endif + +/* + * Routine: save_boot_params (called after reset from start.S) + * Description: save ATAG/FDT address provided by the firmware at boot time + */ + +.global save_boot_params +save_boot_params: + + /* The firmware provided ATAG/FDT address can be found in r2/x0 */ +#ifdef CONFIG_ARM64 + adr x8, fw_dtb_pointer + str x0, [x8] +#else + str r2, fw_dtb_pointer +#endif + + /* Returns */ + b save_boot_params_ret |