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1/*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
5 * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
6 * License terms: GNU General Public License (GPL) version 2
7 */
8
9#include <linux/platform_device.h>
10#include <linux/io.h>
11#include <linux/clk.h>
12#include <linux/mfd/db8500-prcmu.h>
13#include <linux/clksrc-dbx500-prcmu.h>
14#include <linux/sys_soc.h>
15#include <linux/err.h>
16#include <linux/slab.h>
17#include <linux/stat.h>
18#include <linux/of.h>
19#include <linux/of_irq.h>
20
21#include <asm/hardware/gic.h>
22#include <asm/mach/map.h>
23
24#include <mach/hardware.h>
25#include <mach/setup.h>
26#include <mach/devices.h>
27
28#include "clock.h"
29
30void __iomem *_PRCMU_BASE;
31
32/*
33 * FIXME: Should we set up the GPIO domain here?
34 *
35 * The problem is that we cannot put the interrupt resources into the platform
36 * device until the irqdomain has been added. Right now, we set the GIC interrupt
37 * domain from init_irq(), then load the gpio driver from
38 * core_initcall(nmk_gpio_init) and add the platform devices from
39 * arch_initcall(customize_machine).
40 *
41 * This feels fragile because it depends on the gpio device getting probed
42 * _before_ any device uses the gpio interrupts.
43*/
44static const struct of_device_id ux500_dt_irq_match[] = {
45 { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
46 {},
47};
48
49void __init ux500_init_irq(void)
50{
51 void __iomem *dist_base;
52 void __iomem *cpu_base;
53
54 if (cpu_is_u8500_family()) {
55 dist_base = __io_address(U8500_GIC_DIST_BASE);
56 cpu_base = __io_address(U8500_GIC_CPU_BASE);
57 } else
58 ux500_unknown_soc();
59
60#ifdef CONFIG_OF
61 if (of_have_populated_dt())
62 of_irq_init(ux500_dt_irq_match);
63 else
64#endif
65 gic_init(0, 29, dist_base, cpu_base);
66
67 /*
68 * Init clocks here so that they are available for system timer
69 * initialization.
70 */
71 if (cpu_is_u8500_family())
72 db8500_prcmu_early_init();
73 clk_init();
74}
75
76void __init ux500_init_late(void)
77{
78 clk_debugfs_init();
79 clk_init_smp_twd_cpufreq();
80}
81
82static const char * __init ux500_get_machine(void)
83{
84 return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
85}
86
87static const char * __init ux500_get_family(void)
88{
89 return kasprintf(GFP_KERNEL, "ux500");
90}
91
92static const char * __init ux500_get_revision(void)
93{
94 unsigned int rev = dbx500_revision();
95
96 if (rev == 0x01)
97 return kasprintf(GFP_KERNEL, "%s", "ED");
98 else if (rev >= 0xA0)
99 return kasprintf(GFP_KERNEL, "%d.%d",
100 (rev >> 4) - 0xA + 1, rev & 0xf);
101
102 return kasprintf(GFP_KERNEL, "%s", "Unknown");
103}
104
105static ssize_t ux500_get_process(struct device *dev,
106 struct device_attribute *attr,
107 char *buf)
108{
109 if (dbx500_id.process == 0x00)
110 return sprintf(buf, "Standard\n");
111
112 return sprintf(buf, "%02xnm\n", dbx500_id.process);
113}
114
115static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
116 const char *soc_id)
117{
118 soc_dev_attr->soc_id = soc_id;
119 soc_dev_attr->machine = ux500_get_machine();
120 soc_dev_attr->family = ux500_get_family();
121 soc_dev_attr->revision = ux500_get_revision();
122}
123
124struct device_attribute ux500_soc_attr =
125 __ATTR(process, S_IRUGO, ux500_get_process, NULL);
126
127struct device * __init ux500_soc_device_init(const char *soc_id)
128{
129 struct device *parent;
130 struct soc_device *soc_dev;
131 struct soc_device_attribute *soc_dev_attr;
132
133 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
134 if (!soc_dev_attr)
135 return ERR_PTR(-ENOMEM);
136
137 soc_info_populate(soc_dev_attr, soc_id);
138
139 soc_dev = soc_device_register(soc_dev_attr);
140 if (IS_ERR_OR_NULL(soc_dev)) {
141 kfree(soc_dev_attr);
142 return NULL;
143 }
144
145 parent = soc_device_to_device(soc_dev);
146 if (!IS_ERR_OR_NULL(parent))
147 device_create_file(parent, &ux500_soc_attr);
148
149 return parent;
150}
1/*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
5 * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
6 * License terms: GNU General Public License (GPL) version 2
7 */
8
9#include <linux/platform_device.h>
10#include <linux/io.h>
11#include <linux/mfd/dbx500-prcmu.h>
12#include <linux/clksrc-dbx500-prcmu.h>
13#include <linux/sys_soc.h>
14#include <linux/err.h>
15#include <linux/slab.h>
16#include <linux/stat.h>
17#include <linux/of.h>
18#include <linux/of_irq.h>
19#include <linux/irq.h>
20#include <linux/irqchip.h>
21#include <linux/irqchip/arm-gic.h>
22#include <linux/platform_data/clk-ux500.h>
23#include <linux/platform_data/arm-ux500-pm.h>
24
25#include <asm/mach/map.h>
26
27#include "setup.h"
28
29#include "board-mop500.h"
30#include "db8500-regs.h"
31#include "id.h"
32
33void ux500_restart(enum reboot_mode mode, const char *cmd)
34{
35 local_irq_disable();
36 local_fiq_disable();
37
38 prcmu_system_reset(0);
39}
40
41/*
42 * FIXME: Should we set up the GPIO domain here?
43 *
44 * The problem is that we cannot put the interrupt resources into the platform
45 * device until the irqdomain has been added. Right now, we set the GIC interrupt
46 * domain from init_irq(), then load the gpio driver from
47 * core_initcall(nmk_gpio_init) and add the platform devices from
48 * arch_initcall(customize_machine).
49 *
50 * This feels fragile because it depends on the gpio device getting probed
51 * _before_ any device uses the gpio interrupts.
52*/
53void __init ux500_init_irq(void)
54{
55 gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
56 irqchip_init();
57
58 /*
59 * Init clocks here so that they are available for system timer
60 * initialization.
61 */
62 if (cpu_is_u8500_family()) {
63 prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
64 ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
65
66 u8500_of_clk_init(U8500_CLKRST1_BASE,
67 U8500_CLKRST2_BASE,
68 U8500_CLKRST3_BASE,
69 U8500_CLKRST5_BASE,
70 U8500_CLKRST6_BASE);
71 } else if (cpu_is_u9540()) {
72 prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
73 ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
74 u9540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
75 U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
76 U8500_CLKRST6_BASE);
77 } else if (cpu_is_u8540()) {
78 prcmu_early_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
79 ux500_pm_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
80 u8540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
81 U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
82 U8500_CLKRST6_BASE);
83 }
84}
85
86static const char * __init ux500_get_machine(void)
87{
88 return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
89}
90
91static const char * __init ux500_get_family(void)
92{
93 return kasprintf(GFP_KERNEL, "ux500");
94}
95
96static const char * __init ux500_get_revision(void)
97{
98 unsigned int rev = dbx500_revision();
99
100 if (rev == 0x01)
101 return kasprintf(GFP_KERNEL, "%s", "ED");
102 else if (rev >= 0xA0)
103 return kasprintf(GFP_KERNEL, "%d.%d",
104 (rev >> 4) - 0xA + 1, rev & 0xf);
105
106 return kasprintf(GFP_KERNEL, "%s", "Unknown");
107}
108
109static ssize_t ux500_get_process(struct device *dev,
110 struct device_attribute *attr,
111 char *buf)
112{
113 if (dbx500_id.process == 0x00)
114 return sprintf(buf, "Standard\n");
115
116 return sprintf(buf, "%02xnm\n", dbx500_id.process);
117}
118
119static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
120 const char *soc_id)
121{
122 soc_dev_attr->soc_id = soc_id;
123 soc_dev_attr->machine = ux500_get_machine();
124 soc_dev_attr->family = ux500_get_family();
125 soc_dev_attr->revision = ux500_get_revision();
126}
127
128struct device_attribute ux500_soc_attr =
129 __ATTR(process, S_IRUGO, ux500_get_process, NULL);
130
131struct device * __init ux500_soc_device_init(const char *soc_id)
132{
133 struct device *parent;
134 struct soc_device *soc_dev;
135 struct soc_device_attribute *soc_dev_attr;
136
137 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
138 if (!soc_dev_attr)
139 return ERR_PTR(-ENOMEM);
140
141 soc_info_populate(soc_dev_attr, soc_id);
142
143 soc_dev = soc_device_register(soc_dev_attr);
144 if (IS_ERR(soc_dev)) {
145 kfree(soc_dev_attr);
146 return NULL;
147 }
148
149 parent = soc_device_to_device(soc_dev);
150 device_create_file(parent, &ux500_soc_attr);
151
152 return parent;
153}