diff options
Diffstat (limited to 'arch/arm/mach-imx/imx8ulp/lowlevel_init.S')
| -rw-r--r-- | arch/arm/mach-imx/imx8ulp/lowlevel_init.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8ulp/lowlevel_init.S b/arch/arm/mach-imx/imx8ulp/lowlevel_init.S new file mode 100644 index 0000000000..7d81a75639 --- /dev/null +++ b/arch/arm/mach-imx/imx8ulp/lowlevel_init.S @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2020 NXP + */ + +#include <config.h> + +.align 8 +.global rom_pointer +rom_pointer: + .space 256 + +/* + * Routine: save_boot_params (called after reset from start.S) + */ + +.global save_boot_params +save_boot_params: + /* The firmware provided ATAG/FDT address can be found in r2/x0 */ + adr x0, rom_pointer + stp x1, x2, [x0], #16 + stp x3, x4, [x0], #16 + + /* Returns */ + b save_boot_params_ret + +.global restore_boot_params +restore_boot_params: + adr x0, rom_pointer + ldp x1, x2, [x0], #16 + ldp x3, x4, [x0], #16 + ret |