1/* SPDX-License-Identifier: GPL-2.0+ */
2
3#include <config.h>
4#include <linux/linkage.h>
5
6ENTRY(save_boot_params)
7	stmfd	sp!, {r0 - r12, lr}	/* @ save registers on stack */
8	ldr	r12, =CONFIG_SPL_BOOTROM_SAVE
9	str	sp, [r12]
10	b	save_boot_params_ret
11ENDPROC(save_boot_params)
12
13ENTRY(return_to_bootrom)
14	ldr	r12, =CONFIG_SPL_BOOTROM_SAVE
15	ldr	sp, [r12]
16	mov	r0, #0x0		/* @ return value: 0x0 NO_ERR */
17	ldmfd	sp!, {r0 - r12, pc}	/* @ restore regs and return */
18ENDPROC(return_to_bootrom)
19
20/*
21 * cache_inv - invalidate Cache line
22 * r0 - dest
23 */
24	.global cache_inv
25	.type  cache_inv, %function
26	cache_inv:
27
28	stmfd   sp!, {r1-r12}
29
30	mcr     p15, 0, r0, c7, c6, 1
31
32	ldmfd   sp!, {r1-r12}
33	bx      lr
34
35
36/*
37 * flush_l1_v6 - l1 cache clean invalidate
38 * r0 - dest
39 */
40	.global flush_l1_v6
41	.type	flush_l1_v6, %function
42	flush_l1_v6:
43
44	stmfd   sp!, {r1-r12}
45
46	mcr     p15, 0, r0, c7, c10, 5	/* @ data memory barrier */
47	mcr     p15, 0, r0, c7, c14, 1	/* @ clean & invalidate D line */
48	mcr     p15, 0, r0, c7, c10, 4	/* @ data sync barrier */
49
50	ldmfd   sp!, {r1-r12}
51	bx      lr
52
53
54/*
55 * flush_l1_v7 - l1 cache clean invalidate
56 * r0 - dest
57 */
58	.global flush_l1_v7
59	.type	flush_l1_v7, %function
60	flush_l1_v7:
61
62	stmfd   sp!, {r1-r12}
63
64	dmb				/* @data memory barrier */
65	mcr     p15, 0, r0, c7, c14, 1	/* @ clean & invalidate D line */
66	dsb				/* @data sync barrier */
67
68	ldmfd   sp!, {r1-r12}
69	bx      lr
70