u-boot/arch/arm/mach-imx/mx8m/lowlevel_init.S
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

62 lines
1.2 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2017 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
stp x5, x6, [x0], #16
stp x7, x8, [x0], #16
stp x9, x10, [x0], #16
stp x11, x12, [x0], #16
stp x13, x14, [x0], #16
stp x15, x16, [x0], #16
stp x17, x18, [x0], #16
stp x19, x20, [x0], #16
stp x21, x22, [x0], #16
stp x23, x24, [x0], #16
stp x25, x26, [x0], #16
stp x27, x28, [x0], #16
stp x29, x30, [x0], #16
mov x30, sp
str x30, [x0], #8
/* 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
ldp x5, x6, [x0], #16
ldp x7, x8, [x0], #16
ldp x9, x10, [x0], #16
ldp x11, x12, [x0], #16
ldp x13, x14, [x0], #16
ldp x15, x16, [x0], #16
ldp x17, x18, [x0], #16
ldp x19, x20, [x0], #16
ldp x21, x22, [x0], #16
ldp x23, x24, [x0], #16
ldp x25, x26, [x0], #16
ldp x27, x28, [x0], #16
ldp x29, x30, [x0], #16
ldr x0, [x0]
mov sp, x0
ret