blob: 204187c1b4b3a39b31fd69e62e016d917c80e95f [file] [log] [blame]
Marc Zyngiere771a3d2014-07-12 14:24:07 +01001/*
2 * Copyright (C) 2013 - ARM Ltd
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include <common.h>
Jan Kiszkad6b72da2015-04-21 07:18:32 +020019#include <errno.h>
Marc Zyngiere771a3d2014-07-12 14:24:07 +010020#include <stdio_dev.h>
21#include <linux/ctype.h>
22#include <linux/types.h>
23#include <asm/global_data.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090024#include <linux/libfdt.h>
Marc Zyngiere771a3d2014-07-12 14:24:07 +010025#include <fdt_support.h>
26#include <asm/armv7.h>
27#include <asm/psci.h>
28
Jan Kiszkad6b72da2015-04-21 07:18:32 +020029int armv7_apply_memory_carveout(u64 *start, u64 *size)
30{
31#ifdef CONFIG_ARMV7_SECURE_RESERVE_SIZE
32 if (*start + *size < CONFIG_ARMV7_SECURE_BASE ||
33 *start >= (u64)CONFIG_ARMV7_SECURE_BASE +
34 CONFIG_ARMV7_SECURE_RESERVE_SIZE)
35 return 0;
36
37 /* carveout must be at the beginning or the end of the bank */
38 if (*start == CONFIG_ARMV7_SECURE_BASE ||
39 *start + *size == (u64)CONFIG_ARMV7_SECURE_BASE +
40 CONFIG_ARMV7_SECURE_RESERVE_SIZE) {
41 if (*size < CONFIG_ARMV7_SECURE_RESERVE_SIZE) {
42 debug("Secure monitor larger than RAM bank!?\n");
43 return -EINVAL;
44 }
45 *size -= CONFIG_ARMV7_SECURE_RESERVE_SIZE;
46 if (*start == CONFIG_ARMV7_SECURE_BASE)
47 *start += CONFIG_ARMV7_SECURE_RESERVE_SIZE;
48 return 0;
49 }
50 debug("Secure monitor not located at beginning or end of RAM bank\n");
51 return -EINVAL;
52#else /* !CONFIG_ARMV7_SECURE_RESERVE_SIZE */
53 return 0;
54#endif
55}
56
Tom Rinidd09f7e2015-03-05 20:19:36 -050057int psci_update_dt(void *fdt)
Marc Zyngiere771a3d2014-07-12 14:24:07 +010058{
Jan Kiszka104d6fb2015-04-21 07:18:24 +020059#ifdef CONFIG_ARMV7_NONSEC
Ian Campbell97a81962014-12-21 09:45:11 +000060 if (!armv7_boot_nonsec())
61 return 0;
Tom Rinidd09f7e2015-03-05 20:19:36 -050062#endif
Marc Zyngiere771a3d2014-07-12 14:24:07 +010063#ifndef CONFIG_ARMV7_SECURE_BASE
64 /* secure code lives in RAM, keep it alive */
65 fdt_add_mem_rsv(fdt, (unsigned long)__secure_start,
66 __secure_end - __secure_start);
67#endif
68
69 return fdt_psci(fdt);
70}