70 lines
1.4 KiB
ArmAsm
70 lines
1.4 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
|
|
#include <config.h>
|
|
#include <linux/linkage.h>
|
|
|
|
ENTRY(save_boot_params)
|
|
stmfd sp!, {r0 - r12, lr} /* @ save registers on stack */
|
|
ldr r12, =CONFIG_SPL_BOOTROM_SAVE
|
|
str sp, [r12]
|
|
b save_boot_params_ret
|
|
ENDPROC(save_boot_params)
|
|
|
|
ENTRY(return_to_bootrom)
|
|
ldr r12, =CONFIG_SPL_BOOTROM_SAVE
|
|
ldr sp, [r12]
|
|
mov r0, #0x0 /* @ return value: 0x0 NO_ERR */
|
|
ldmfd sp!, {r0 - r12, pc} /* @ restore regs and return */
|
|
ENDPROC(return_to_bootrom)
|
|
|
|
/*
|
|
* cache_inv - invalidate Cache line
|
|
* r0 - dest
|
|
*/
|
|
.global cache_inv
|
|
.type cache_inv, %function
|
|
cache_inv:
|
|
|
|
stmfd sp!, {r1-r12}
|
|
|
|
mcr p15, 0, r0, c7, c6, 1
|
|
|
|
ldmfd sp!, {r1-r12}
|
|
bx lr
|
|
|
|
|
|
/*
|
|
* flush_l1_v6 - l1 cache clean invalidate
|
|
* r0 - dest
|
|
*/
|
|
.global flush_l1_v6
|
|
.type flush_l1_v6, %function
|
|
flush_l1_v6:
|
|
|
|
stmfd sp!, {r1-r12}
|
|
|
|
mcr p15, 0, r0, c7, c10, 5 /* @ data memory barrier */
|
|
mcr p15, 0, r0, c7, c14, 1 /* @ clean & invalidate D line */
|
|
mcr p15, 0, r0, c7, c10, 4 /* @ data sync barrier */
|
|
|
|
ldmfd sp!, {r1-r12}
|
|
bx lr
|
|
|
|
|
|
/*
|
|
* flush_l1_v7 - l1 cache clean invalidate
|
|
* r0 - dest
|
|
*/
|
|
.global flush_l1_v7
|
|
.type flush_l1_v7, %function
|
|
flush_l1_v7:
|
|
|
|
stmfd sp!, {r1-r12}
|
|
|
|
dmb /* @data memory barrier */
|
|
mcr p15, 0, r0, c7, c14, 1 /* @ clean & invalidate D line */
|
|
dsb /* @data sync barrier */
|
|
|
|
ldmfd sp!, {r1-r12}
|
|
bx lr
|