1/*
 2 * Copyright (C) 2014 Broadcom Corporation
 3 *
 4 * This program is free software; you can redistribute it and/or
 5 * modify it under the terms of the GNU General Public License as
 6 * published by the Free Software Foundation version 2.
 7 *
 8 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 */
13
 
 
 
 
14#include <asm/mach/arch.h>
15
16#include "kona_l2_cache.h"
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
17
18static void __init bcm21664_init(void)
19{
 
 
20	kona_l2_cache_init();
21}
22
23static const char * const bcm21664_dt_compat[] = {
24	"brcm,bcm21664",
25	NULL,
26};
27
28DT_MACHINE_START(BCM21664_DT, "BCM21664 Broadcom Application Processor")
29	.init_machine = bcm21664_init,
 
30	.dt_compat = bcm21664_dt_compat,
31MACHINE_END

 1/*
 2 * Copyright (C) 2014 Broadcom Corporation
 3 *
 4 * This program is free software; you can redistribute it and/or
 5 * modify it under the terms of the GNU General Public License as
 6 * published by the Free Software Foundation version 2.
 7 *
 8 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 */
13
14#include <linux/clocksource.h>
15#include <linux/of_address.h>
16#include <linux/of_platform.h>
17
18#include <asm/mach/arch.h>
19
20#include "bcm_kona_smc.h"
21#include "kona.h"
22
23#define RSTMGR_DT_STRING		"brcm,bcm21664-resetmgr"
24
25#define RSTMGR_REG_WR_ACCESS_OFFSET	0
26#define RSTMGR_REG_CHIP_SOFT_RST_OFFSET	4
27
28#define RSTMGR_WR_PASSWORD		0xa5a5
29#define RSTMGR_WR_PASSWORD_SHIFT	8
30#define RSTMGR_WR_ACCESS_ENABLE		1
31
32static void bcm21664_restart(enum reboot_mode mode, const char *cmd)
33{
34	void __iomem *base;
35	struct device_node *resetmgr;
36
37	resetmgr = of_find_compatible_node(NULL, NULL, RSTMGR_DT_STRING);
38	if (!resetmgr) {
39		pr_emerg("Couldn't find " RSTMGR_DT_STRING "\n");
40		return;
41	}
42	base = of_iomap(resetmgr, 0);
43	if (!base) {
44		pr_emerg("Couldn't map " RSTMGR_DT_STRING "\n");
45		return;
46	}
47
48	/*
49	 * A soft reset is triggered by writing a 0 to bit 0 of the soft reset
50	 * register. To write to that register we must first write the password
51	 * and the enable bit in the write access enable register.
52	 */
53	writel((RSTMGR_WR_PASSWORD << RSTMGR_WR_PASSWORD_SHIFT) |
54		RSTMGR_WR_ACCESS_ENABLE,
55		base + RSTMGR_REG_WR_ACCESS_OFFSET);
56	writel(0, base + RSTMGR_REG_CHIP_SOFT_RST_OFFSET);
57
58	/* Wait for reset */
59	while (1);
60}
61
62static void __init bcm21664_init(void)
63{
64	of_platform_populate(NULL, of_default_bus_match_table, NULL,
65		&platform_bus);
66	kona_l2_cache_init();
67}
68
69static const char * const bcm21664_dt_compat[] = {
70	"brcm,bcm21664",
71	NULL,
72};
73
74DT_MACHINE_START(BCM21664_DT, "BCM21664 Broadcom Application Processor")
75	.init_machine = bcm21664_init,
76	.restart = bcm21664_restart,
77	.dt_compat = bcm21664_dt_compat,
78MACHINE_END