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1 | /* |
2 | * linux/arch/arm/mach-integrator/integrator_ap.c | |
3 | * | |
4 | * Copyright (C) 2000-2003 Deep Blue Solutions Ltd | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | #include <linux/types.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/list.h> | |
24 | #include <linux/device.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/string.h> | |
27 | #include <linux/sysdev.h> | |
28 | ||
29 | #include <asm/hardware.h> | |
30 | #include <asm/io.h> | |
31 | #include <asm/irq.h> | |
32 | #include <asm/setup.h> | |
33 | #include <asm/mach-types.h> | |
34 | #include <asm/hardware/amba.h> | |
35 | #include <asm/hardware/amba_kmi.h> | |
36 | ||
37 | #include <asm/arch/lm.h> | |
38 | ||
39 | #include <asm/mach/arch.h> | |
40 | #include <asm/mach/flash.h> | |
41 | #include <asm/mach/irq.h> | |
42 | #include <asm/mach/map.h> | |
43 | #include <asm/mach/time.h> | |
44 | ||
45 | #include "common.h" | |
46 | ||
47 | /* | |
48 | * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx | |
49 | * is the (PA >> 12). | |
50 | * | |
51 | * Setup a VA for the Integrator interrupt controller (for header #0, | |
52 | * just for now). | |
53 | */ | |
54 | #define VA_IC_BASE IO_ADDRESS(INTEGRATOR_IC_BASE) | |
55 | #define VA_SC_BASE IO_ADDRESS(INTEGRATOR_SC_BASE) | |
56 | #define VA_EBI_BASE IO_ADDRESS(INTEGRATOR_EBI_BASE) | |
57 | #define VA_CMIC_BASE IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_IC_OFFSET | |
58 | ||
59 | /* | |
60 | * Logical Physical | |
61 | * e8000000 40000000 PCI memory PHYS_PCI_MEM_BASE (max 512M) | |
62 | * ec000000 61000000 PCI config space PHYS_PCI_CONFIG_BASE (max 16M) | |
63 | * ed000000 62000000 PCI V3 regs PHYS_PCI_V3_BASE (max 64k) | |
64 | * ee000000 60000000 PCI IO PHYS_PCI_IO_BASE (max 16M) | |
65 | * ef000000 Cache flush | |
66 | * f1000000 10000000 Core module registers | |
67 | * f1100000 11000000 System controller registers | |
68 | * f1200000 12000000 EBI registers | |
69 | * f1300000 13000000 Counter/Timer | |
70 | * f1400000 14000000 Interrupt controller | |
71 | * f1600000 16000000 UART 0 | |
72 | * f1700000 17000000 UART 1 | |
73 | * f1a00000 1a000000 Debug LEDs | |
74 | * f1b00000 1b000000 GPIO | |
75 | */ | |
76 | ||
77 | static struct map_desc ap_io_desc[] __initdata = { | |
78 | { IO_ADDRESS(INTEGRATOR_HDR_BASE), INTEGRATOR_HDR_BASE, SZ_4K, MT_DEVICE }, | |
79 | { IO_ADDRESS(INTEGRATOR_SC_BASE), INTEGRATOR_SC_BASE, SZ_4K, MT_DEVICE }, | |
80 | { IO_ADDRESS(INTEGRATOR_EBI_BASE), INTEGRATOR_EBI_BASE, SZ_4K, MT_DEVICE }, | |
81 | { IO_ADDRESS(INTEGRATOR_CT_BASE), INTEGRATOR_CT_BASE, SZ_4K, MT_DEVICE }, | |
82 | { IO_ADDRESS(INTEGRATOR_IC_BASE), INTEGRATOR_IC_BASE, SZ_4K, MT_DEVICE }, | |
83 | { IO_ADDRESS(INTEGRATOR_UART0_BASE), INTEGRATOR_UART0_BASE, SZ_4K, MT_DEVICE }, | |
84 | { IO_ADDRESS(INTEGRATOR_UART1_BASE), INTEGRATOR_UART1_BASE, SZ_4K, MT_DEVICE }, | |
85 | { IO_ADDRESS(INTEGRATOR_DBG_BASE), INTEGRATOR_DBG_BASE, SZ_4K, MT_DEVICE }, | |
86 | { IO_ADDRESS(INTEGRATOR_GPIO_BASE), INTEGRATOR_GPIO_BASE, SZ_4K, MT_DEVICE }, | |
87 | { PCI_MEMORY_VADDR, PHYS_PCI_MEM_BASE, SZ_16M, MT_DEVICE }, | |
88 | { PCI_CONFIG_VADDR, PHYS_PCI_CONFIG_BASE, SZ_16M, MT_DEVICE }, | |
89 | { PCI_V3_VADDR, PHYS_PCI_V3_BASE, SZ_64K, MT_DEVICE }, | |
90 | { PCI_IO_VADDR, PHYS_PCI_IO_BASE, SZ_64K, MT_DEVICE } | |
91 | }; | |
92 | ||
93 | static void __init ap_map_io(void) | |
94 | { | |
95 | iotable_init(ap_io_desc, ARRAY_SIZE(ap_io_desc)); | |
96 | } | |
97 | ||
98 | #define INTEGRATOR_SC_VALID_INT 0x003fffff | |
99 | ||
100 | static void sc_mask_irq(unsigned int irq) | |
101 | { | |
102 | writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_CLEAR); | |
103 | } | |
104 | ||
105 | static void sc_unmask_irq(unsigned int irq) | |
106 | { | |
107 | writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_SET); | |
108 | } | |
109 | ||
110 | static struct irqchip sc_chip = { | |
111 | .ack = sc_mask_irq, | |
112 | .mask = sc_mask_irq, | |
113 | .unmask = sc_unmask_irq, | |
114 | }; | |
115 | ||
116 | static void __init ap_init_irq(void) | |
117 | { | |
118 | unsigned int i; | |
119 | ||
120 | /* Disable all interrupts initially. */ | |
121 | /* Do the core module ones */ | |
122 | writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR); | |
123 | ||
124 | /* do the header card stuff next */ | |
125 | writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR); | |
126 | writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR); | |
127 | ||
128 | for (i = 0; i < NR_IRQS; i++) { | |
129 | if (((1 << i) & INTEGRATOR_SC_VALID_INT) != 0) { | |
130 | set_irq_chip(i, &sc_chip); | |
131 | set_irq_handler(i, do_level_IRQ); | |
132 | set_irq_flags(i, IRQF_VALID | IRQF_PROBE); | |
133 | } | |
134 | } | |
135 | } | |
136 | ||
137 | #ifdef CONFIG_PM | |
138 | static unsigned long ic_irq_enable; | |
139 | ||
140 | static int irq_suspend(struct sys_device *dev, pm_message_t state) | |
141 | { | |
142 | ic_irq_enable = readl(VA_IC_BASE + IRQ_ENABLE); | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static int irq_resume(struct sys_device *dev) | |
147 | { | |
148 | /* disable all irq sources */ | |
149 | writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR); | |
150 | writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR); | |
151 | writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR); | |
152 | ||
153 | writel(ic_irq_enable, VA_IC_BASE + IRQ_ENABLE_SET); | |
154 | return 0; | |
155 | } | |
156 | #else | |
157 | #define irq_suspend NULL | |
158 | #define irq_resume NULL | |
159 | #endif | |
160 | ||
161 | static struct sysdev_class irq_class = { | |
162 | set_kset_name("irq"), | |
163 | .suspend = irq_suspend, | |
164 | .resume = irq_resume, | |
165 | }; | |
166 | ||
167 | static struct sys_device irq_device = { | |
168 | .id = 0, | |
169 | .cls = &irq_class, | |
170 | }; | |
171 | ||
172 | static int __init irq_init_sysfs(void) | |
173 | { | |
174 | int ret = sysdev_class_register(&irq_class); | |
175 | if (ret == 0) | |
176 | ret = sysdev_register(&irq_device); | |
177 | return ret; | |
178 | } | |
179 | ||
180 | device_initcall(irq_init_sysfs); | |
181 | ||
182 | /* | |
183 | * Flash handling. | |
184 | */ | |
185 | #define SC_CTRLC (VA_SC_BASE + INTEGRATOR_SC_CTRLC_OFFSET) | |
186 | #define SC_CTRLS (VA_SC_BASE + INTEGRATOR_SC_CTRLS_OFFSET) | |
187 | #define EBI_CSR1 (VA_EBI_BASE + INTEGRATOR_EBI_CSR1_OFFSET) | |
188 | #define EBI_LOCK (VA_EBI_BASE + INTEGRATOR_EBI_LOCK_OFFSET) | |
189 | ||
190 | static int ap_flash_init(void) | |
191 | { | |
192 | u32 tmp; | |
193 | ||
194 | writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC); | |
195 | ||
196 | tmp = readl(EBI_CSR1) | INTEGRATOR_EBI_WRITE_ENABLE; | |
197 | writel(tmp, EBI_CSR1); | |
198 | ||
199 | if (!(readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE)) { | |
200 | writel(0xa05f, EBI_LOCK); | |
201 | writel(tmp, EBI_CSR1); | |
202 | writel(0, EBI_LOCK); | |
203 | } | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static void ap_flash_exit(void) | |
208 | { | |
209 | u32 tmp; | |
210 | ||
211 | writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC); | |
212 | ||
213 | tmp = readl(EBI_CSR1) & ~INTEGRATOR_EBI_WRITE_ENABLE; | |
214 | writel(tmp, EBI_CSR1); | |
215 | ||
216 | if (readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE) { | |
217 | writel(0xa05f, EBI_LOCK); | |
218 | writel(tmp, EBI_CSR1); | |
219 | writel(0, EBI_LOCK); | |
220 | } | |
221 | } | |
222 | ||
223 | static void ap_flash_set_vpp(int on) | |
224 | { | |
225 | unsigned long reg = on ? SC_CTRLS : SC_CTRLC; | |
226 | ||
227 | writel(INTEGRATOR_SC_CTRL_nFLVPPEN, reg); | |
228 | } | |
229 | ||
230 | static struct flash_platform_data ap_flash_data = { | |
231 | .map_name = "cfi_probe", | |
232 | .width = 4, | |
233 | .init = ap_flash_init, | |
234 | .exit = ap_flash_exit, | |
235 | .set_vpp = ap_flash_set_vpp, | |
236 | }; | |
237 | ||
238 | static struct resource cfi_flash_resource = { | |
239 | .start = INTEGRATOR_FLASH_BASE, | |
240 | .end = INTEGRATOR_FLASH_BASE + INTEGRATOR_FLASH_SIZE - 1, | |
241 | .flags = IORESOURCE_MEM, | |
242 | }; | |
243 | ||
244 | static struct platform_device cfi_flash_device = { | |
245 | .name = "armflash", | |
246 | .id = 0, | |
247 | .dev = { | |
248 | .platform_data = &ap_flash_data, | |
249 | }, | |
250 | .num_resources = 1, | |
251 | .resource = &cfi_flash_resource, | |
252 | }; | |
253 | ||
254 | static void __init ap_init(void) | |
255 | { | |
256 | unsigned long sc_dec; | |
257 | int i; | |
258 | ||
259 | platform_device_register(&cfi_flash_device); | |
260 | ||
261 | sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET); | |
262 | for (i = 0; i < 4; i++) { | |
263 | struct lm_device *lmdev; | |
264 | ||
265 | if ((sc_dec & (16 << i)) == 0) | |
266 | continue; | |
267 | ||
268 | lmdev = kmalloc(sizeof(struct lm_device), GFP_KERNEL); | |
269 | if (!lmdev) | |
270 | continue; | |
271 | ||
272 | memset(lmdev, 0, sizeof(struct lm_device)); | |
273 | ||
274 | lmdev->resource.start = 0xc0000000 + 0x10000000 * i; | |
275 | lmdev->resource.end = lmdev->resource.start + 0x0fffffff; | |
276 | lmdev->resource.flags = IORESOURCE_MEM; | |
277 | lmdev->irq = IRQ_AP_EXPINT0 + i; | |
278 | lmdev->id = i; | |
279 | ||
280 | lm_device_register(lmdev); | |
281 | } | |
282 | } | |
283 | ||
284 | static void __init ap_init_timer(void) | |
285 | { | |
286 | integrator_time_init(1000000 * TICKS_PER_uSEC / HZ, 0); | |
287 | } | |
288 | ||
289 | static struct sys_timer ap_timer = { | |
290 | .init = ap_init_timer, | |
291 | .offset = integrator_gettimeoffset, | |
292 | }; | |
293 | ||
294 | MACHINE_START(INTEGRATOR, "ARM-Integrator") | |
e9dea0c6 RK |
295 | /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */ |
296 | .phys_ram = 0x00000000, | |
297 | .phys_io = 0x16000000, | |
298 | .io_pg_offst = ((0xf1600000) >> 18) & 0xfffc, | |
299 | .boot_params = 0x00000100, | |
300 | .map_io = ap_map_io, | |
301 | .init_irq = ap_init_irq, | |
1da177e4 | 302 | .timer = &ap_timer, |
e9dea0c6 | 303 | .init_machine = ap_init, |
1da177e4 | 304 | MACHINE_END |