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16#include <linux/clk.h>
17#include <linux/clkdev.h>
18#include <linux/clocksource.h>
19#include <linux/dma-mapping.h>
20#include <linux/input.h>
21#include <linux/io.h>
22#include <linux/irqchip.h>
23#include <linux/pl320-ipc.h>
24#include <linux/of.h>
25#include <linux/of_irq.h>
26#include <linux/of_platform.h>
27#include <linux/of_address.h>
28#include <linux/reboot.h>
29#include <linux/amba/bus.h>
30#include <linux/platform_device.h>
31
32#include <asm/psci.h>
33#include <asm/hardware/cache-l2x0.h>
34#include <asm/mach/arch.h>
35#include <asm/mach/map.h>
36
37#include "core.h"
38#include "sysregs.h"
39
40void __iomem *sregs_base;
41void __iomem *scu_base_addr;
42
43static void __init highbank_scu_map_io(void)
44{
45 unsigned long base;
46
47
48 asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base));
49
50 scu_base_addr = ioremap(base, SZ_4K);
51}
52
53
54static void highbank_l2c310_write_sec(unsigned long val, unsigned reg)
55{
56 if (reg == L2X0_CTRL)
57 highbank_smc1(0x102, val);
58 else
59 WARN_ONCE(1, "Highbank L2C310: ignoring write to reg 0x%x\n",
60 reg);
61}
62
63static void __init highbank_init_irq(void)
64{
65 irqchip_init();
66
67 if (of_find_compatible_node(NULL, NULL, "arm,cortex-a9"))
68 highbank_scu_map_io();
69}
70
71static void highbank_power_off(void)
72{
73 highbank_set_pwr_shutdown();
74
75 while (1)
76 cpu_do_idle();
77}
78
79static int highbank_platform_notifier(struct notifier_block *nb,
80 unsigned long event, void *__dev)
81{
82 struct resource *res;
83 int reg = -1;
84 u32 val;
85 struct device *dev = __dev;
86
87 if (event != BUS_NOTIFY_ADD_DEVICE)
88 return NOTIFY_DONE;
89
90 if (of_device_is_compatible(dev->of_node, "calxeda,hb-ahci"))
91 reg = 0xc;
92 else if (of_device_is_compatible(dev->of_node, "calxeda,hb-sdhci"))
93 reg = 0x18;
94 else if (of_device_is_compatible(dev->of_node, "arm,pl330"))
95 reg = 0x20;
96 else if (of_device_is_compatible(dev->of_node, "calxeda,hb-xgmac")) {
97 res = platform_get_resource(to_platform_device(dev),
98 IORESOURCE_MEM, 0);
99 if (res) {
100 if (res->start == 0xfff50000)
101 reg = 0;
102 else if (res->start == 0xfff51000)
103 reg = 4;
104 }
105 }
106
107 if (reg < 0)
108 return NOTIFY_DONE;
109
110 if (of_property_read_bool(dev->of_node, "dma-coherent")) {
111 val = readl(sregs_base + reg);
112 writel(val | 0xff01, sregs_base + reg);
113 set_dma_ops(dev, &arm_coherent_dma_ops);
114 }
115
116 return NOTIFY_OK;
117}
118
119static struct notifier_block highbank_amba_nb = {
120 .notifier_call = highbank_platform_notifier,
121};
122
123static struct notifier_block highbank_platform_nb = {
124 .notifier_call = highbank_platform_notifier,
125};
126
127static struct platform_device highbank_cpuidle_device = {
128 .name = "cpuidle-calxeda",
129};
130
131static int hb_keys_notifier(struct notifier_block *nb, unsigned long event, void *data)
132{
133 u32 key = *(u32 *)data;
134
135 if (event != 0x1000)
136 return 0;
137
138 if (key == KEY_POWER)
139 orderly_poweroff(false);
140 else if (key == 0xffff)
141 ctrl_alt_del();
142
143 return 0;
144}
145static struct notifier_block hb_keys_nb = {
146 .notifier_call = hb_keys_notifier,
147};
148
149static void __init highbank_init(void)
150{
151 struct device_node *np;
152
153
154 np = of_find_compatible_node(NULL, NULL, "calxeda,hb-sregs");
155 sregs_base = of_iomap(np, 0);
156 WARN_ON(!sregs_base);
157
158 pm_power_off = highbank_power_off;
159 highbank_pm_init();
160
161 bus_register_notifier(&platform_bus_type, &highbank_platform_nb);
162 bus_register_notifier(&amba_bustype, &highbank_amba_nb);
163
164 pl320_ipc_register_notifier(&hb_keys_nb);
165
166 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
167
168 if (psci_ops.cpu_suspend)
169 platform_device_register(&highbank_cpuidle_device);
170}
171
172static const char *const highbank_match[] __initconst = {
173 "calxeda,highbank",
174 "calxeda,ecx-2000",
175 NULL,
176};
177
178DT_MACHINE_START(HIGHBANK, "Highbank")
179#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
180 .dma_zone_size = (4ULL * SZ_1G),
181#endif
182 .l2c_aux_val = 0,
183 .l2c_aux_mask = ~0,
184 .l2c_write_sec = highbank_l2c310_write_sec,
185 .init_irq = highbank_init_irq,
186 .init_machine = highbank_init,
187 .dt_compat = highbank_match,
188 .restart = highbank_restart,
189MACHINE_END
190
