blob: 11fe5b8d0484c289c6d2bd93d14e1f17a4220b69 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*
* Lowlevel setup for EXYNOS5 based board
*
* Copyright (C) 2013 Samsung Electronics
* Rajeshwari Shinde <rajeshwari.s@samsung.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <config.h>
#include <asm/arch/cpu.h>
#include <asm/arch/dmc.h>
#include <asm/arch/power.h>
#include <asm/arch/tzpc.h>
#include <asm/arch/periph.h>
#include <asm/arch/pinmux.h>
#include "common_setup.h"
/* These are the things we can do during low-level init */
enum {
DO_WAKEUP = 1 << 0,
DO_CLOCKS = 1 << 1,
DO_MEM_RESET = 1 << 2,
DO_UART = 1 << 3,
};
int do_lowlevel_init(void)
{
uint32_t reset_status;
int actions = 0;
arch_cpu_init();
reset_status = get_reset_status();
switch (reset_status) {
case S5P_CHECK_SLEEP:
actions = DO_CLOCKS | DO_WAKEUP;
break;
case S5P_CHECK_DIDLE:
case S5P_CHECK_LPA:
actions = DO_WAKEUP;
break;
default:
/* This is a normal boot (not a wake from sleep) */
actions = DO_CLOCKS | DO_MEM_RESET;
}
if (actions & DO_CLOCKS) {
system_clock_init();
mem_ctrl_init(actions & DO_MEM_RESET);
tzpc_init();
}
return actions & DO_WAKEUP;
}
|
