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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / arch / arm / mach-orion / common.c
blobbbc2b4ec932ca8a407188a3810a3dcbcfd317840
1 /*
2 * arch/arm/mach-orion/common.c
3 *
4 * Core functions for Marvell Orion System On Chip
5 *
6 * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
7 *
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
11 */
12
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/serial_8250.h>
17 #include <linux/mv643xx_eth.h>
18 #include <linux/mv643xx_i2c.h>
19 #include <asm/page.h>
20 #include <asm/setup.h>
21 #include <asm/timex.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/map.h>
24 #include <asm/arch/hardware.h>
25 #include "common.h"
26
27 /*****************************************************************************
28 * I/O Address Mapping
29 ****************************************************************************/
30 static struct map_desc orion_io_desc[] __initdata = {
31 {
32 .virtual = ORION_REGS_VIRT_BASE,
33 .pfn = __phys_to_pfn(ORION_REGS_PHYS_BASE),
34 .length = ORION_REGS_SIZE,
35 .type = MT_DEVICE
36 },
37 {
38 .virtual = ORION_PCIE_IO_VIRT_BASE,
39 .pfn = __phys_to_pfn(ORION_PCIE_IO_PHYS_BASE),
40 .length = ORION_PCIE_IO_SIZE,
41 .type = MT_DEVICE
42 },
43 {
44 .virtual = ORION_PCI_IO_VIRT_BASE,
45 .pfn = __phys_to_pfn(ORION_PCI_IO_PHYS_BASE),
46 .length = ORION_PCI_IO_SIZE,
47 .type = MT_DEVICE
48 },
49 {
50 .virtual = ORION_PCIE_WA_VIRT_BASE,
51 .pfn = __phys_to_pfn(ORION_PCIE_WA_PHYS_BASE),
52 .length = ORION_PCIE_WA_SIZE,
53 .type = MT_DEVICE
54 },
55 };
56
57 void __init orion_map_io(void)
58 {
59 iotable_init(orion_io_desc, ARRAY_SIZE(orion_io_desc));
60 }
61
62 /*****************************************************************************
63 * UART
64 ****************************************************************************/
65
66 static struct resource orion_uart_resources[] = {
67 {
68 .start = UART0_PHYS_BASE,
69 .end = UART0_PHYS_BASE + 0xff,
70 .flags = IORESOURCE_MEM,
71 },
72 {
73 .start = IRQ_ORION_UART0,
74 .end = IRQ_ORION_UART0,
75 .flags = IORESOURCE_IRQ,
76 },
77 {
78 .start = UART1_PHYS_BASE,
79 .end = UART1_PHYS_BASE + 0xff,
80 .flags = IORESOURCE_MEM,
81 },
82 {
83 .start = IRQ_ORION_UART1,
84 .end = IRQ_ORION_UART1,
85 .flags = IORESOURCE_IRQ,
86 },
87 };
88
89 static struct plat_serial8250_port orion_uart_data[] = {
90 {
91 .mapbase = UART0_PHYS_BASE,
92 .membase = (char *)UART0_VIRT_BASE,
93 .irq = IRQ_ORION_UART0,
94 .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
95 .iotype = UPIO_MEM,
96 .regshift = 2,
97 .uartclk = ORION_TCLK,
98 },
99 {
100 .mapbase = UART1_PHYS_BASE,
101 .membase = (char *)UART1_VIRT_BASE,
102 .irq = IRQ_ORION_UART1,
103 .flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
104 .iotype = UPIO_MEM,
105 .regshift = 2,
106 .uartclk = ORION_TCLK,
107 },
108 { },
109 };
110
111 static struct platform_device orion_uart = {
112 .name = "serial8250",
113 .id = PLAT8250_DEV_PLATFORM,
114 .dev = {
115 .platform_data = orion_uart_data,
116 },
117 .resource = orion_uart_resources,
118 .num_resources = ARRAY_SIZE(orion_uart_resources),
119 };
120
121 /*******************************************************************************
122 * USB Controller - 2 interfaces
123 ******************************************************************************/
124
125 static struct resource orion_ehci0_resources[] = {
126 {
127 .start = ORION_USB0_PHYS_BASE,
128 .end = ORION_USB0_PHYS_BASE + SZ_4K,
129 .flags = IORESOURCE_MEM,
130 },
131 {
132 .start = IRQ_ORION_USB0_CTRL,
133 .end = IRQ_ORION_USB0_CTRL,
134 .flags = IORESOURCE_IRQ,
135 },
136 };
137
138 static struct resource orion_ehci1_resources[] = {
139 {
140 .start = ORION_USB1_PHYS_BASE,
141 .end = ORION_USB1_PHYS_BASE + SZ_4K,
142 .flags = IORESOURCE_MEM,
143 },
144 {
145 .start = IRQ_ORION_USB1_CTRL,
146 .end = IRQ_ORION_USB1_CTRL,
147 .flags = IORESOURCE_IRQ,
148 },
149 };
150
151 static u64 ehci_dmamask = 0xffffffffUL;
152
153 static struct platform_device orion_ehci0 = {
154 .name = "orion-ehci",
155 .id = 0,
156 .dev = {
157 .dma_mask = &ehci_dmamask,
158 .coherent_dma_mask = 0xffffffff,
159 },
160 .resource = orion_ehci0_resources,
161 .num_resources = ARRAY_SIZE(orion_ehci0_resources),
162 };
163
164 static struct platform_device orion_ehci1 = {
165 .name = "orion-ehci",
166 .id = 1,
167 .dev = {
168 .dma_mask = &ehci_dmamask,
169 .coherent_dma_mask = 0xffffffff,
170 },
171 .resource = orion_ehci1_resources,
172 .num_resources = ARRAY_SIZE(orion_ehci1_resources),
173 };
174
175 /*****************************************************************************
176 * Gigabit Ethernet port
177 * (The Orion and Discovery (MV643xx) families use the same Ethernet driver)
178 ****************************************************************************/
179
180 static struct resource orion_eth_shared_resources[] = {
181 {
182 .start = ORION_ETH_PHYS_BASE + 0x2000,
183 .end = ORION_ETH_PHYS_BASE + 0x3fff,
184 .flags = IORESOURCE_MEM,
185 },
186 };
187
188 static struct platform_device orion_eth_shared = {
189 .name = MV643XX_ETH_SHARED_NAME,
190 .id = 0,
191 .num_resources = 1,
192 .resource = orion_eth_shared_resources,
193 };
194
195 static struct resource orion_eth_resources[] = {
196 {
197 .name = "eth irq",
198 .start = IRQ_ORION_ETH_SUM,
199 .end = IRQ_ORION_ETH_SUM,
200 .flags = IORESOURCE_IRQ,
201 }
202 };
203
204 static struct platform_device orion_eth = {
205 .name = MV643XX_ETH_NAME,
206 .id = 0,
207 .num_resources = 1,
208 .resource = orion_eth_resources,
209 };
210
211 void __init orion_eth_init(struct mv643xx_eth_platform_data *eth_data)
212 {
213 orion_eth.dev.platform_data = eth_data;
214 platform_device_register(&orion_eth_shared);
215 platform_device_register(&orion_eth);
216 }
217
218 /*****************************************************************************
219 * I2C controller
220 * (The Orion and Discovery (MV643xx) families share the same I2C controller)
221 ****************************************************************************/
222
223 static struct mv64xxx_i2c_pdata orion_i2c_pdata = {
224 .freq_m = 8, /* assumes 166 MHz TCLK */
225 .freq_n = 3,
226 .timeout = 1000, /* Default timeout of 1 second */
227 };
228
229 static struct resource orion_i2c_resources[] = {
230 {
231 .name = "i2c base",
232 .start = I2C_PHYS_BASE,
233 .end = I2C_PHYS_BASE + 0x20 -1,
234 .flags = IORESOURCE_MEM,
235 },
236 {
237 .name = "i2c irq",
238 .start = IRQ_ORION_I2C,
239 .end = IRQ_ORION_I2C,
240 .flags = IORESOURCE_IRQ,
241 },
242 };
243
244 static struct platform_device orion_i2c = {
245 .name = MV64XXX_I2C_CTLR_NAME,
246 .id = 0,
247 .num_resources = ARRAY_SIZE(orion_i2c_resources),
248 .resource = orion_i2c_resources,
249 .dev = {
250 .platform_data = &orion_i2c_pdata,
251 },
252 };
253
254 /*****************************************************************************
255 * Sata port
256 ****************************************************************************/
257 static struct resource orion_sata_resources[] = {
258 {
259 .name = "sata base",
260 .start = ORION_SATA_PHYS_BASE,
261 .end = ORION_SATA_PHYS_BASE + 0x5000 - 1,
262 .flags = IORESOURCE_MEM,
263 },
264 {
265 .name = "sata irq",
266 .start = IRQ_ORION_SATA,
267 .end = IRQ_ORION_SATA,
268 .flags = IORESOURCE_IRQ,
269 },
270 };
271
272 static struct platform_device orion_sata = {
273 .name = "sata_mv",
274 .id = 0,
275 .dev = {
276 .coherent_dma_mask = 0xffffffff,
277 },
278 .num_resources = ARRAY_SIZE(orion_sata_resources),
279 .resource = orion_sata_resources,
280 };
281
282 void __init orion_sata_init(struct mv_sata_platform_data *sata_data)
283 {
284 orion_sata.dev.platform_data = sata_data;
285 platform_device_register(&orion_sata);
286 }
287
288 /*****************************************************************************
289 * General
290 ****************************************************************************/
291
292 /*
293 * Identify device ID and rev from PCIE configuration header space '0'.
294 */
295 static void orion_id(u32 *dev, u32 *rev, char **dev_name)
296 {
297 orion_pcie_id(dev, rev);
298
299 if (*dev == MV88F5281_DEV_ID) {
300 if (*rev == MV88F5281_REV_D2) {
301 *dev_name = "MV88F5281-D2";
302 } else if (*rev == MV88F5281_REV_D1) {
303 *dev_name = "MV88F5281-D1";
304 } else {
305 *dev_name = "MV88F5281-Rev-Unsupported";
306 }
307 } else if (*dev == MV88F5182_DEV_ID) {
308 if (*rev == MV88F5182_REV_A2) {
309 *dev_name = "MV88F5182-A2";
310 } else {
311 *dev_name = "MV88F5182-Rev-Unsupported";
312 }
313 } else if (*dev == MV88F5181_DEV_ID) {
314 if (*rev == MV88F5181_REV_B1) {
315 *dev_name = "MV88F5181-Rev-B1";
316 } else {
317 *dev_name = "MV88F5181-Rev-Unsupported";
318 }
319 } else {
320 *dev_name = "Device-Unknown";
321 }
322 }
323
324 void __init orion_init(void)
325 {
326 char *dev_name;
327 u32 dev, rev;
328
329 orion_id(&dev, &rev, &dev_name);
330 printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION_TCLK);
331
332 /*
333 * Setup Orion address map
334 */
335 orion_setup_cpu_wins();
336 orion_setup_usb_wins();
337 orion_setup_eth_wins();
338 orion_setup_pci_wins();
339 orion_setup_pcie_wins();
340 if (dev == MV88F5182_DEV_ID)
341 orion_setup_sata_wins();
342
343 /*
344 * REgister devices
345 */
346 platform_device_register(&orion_uart);
347 platform_device_register(&orion_ehci0);
348 if (dev == MV88F5182_DEV_ID)
349 platform_device_register(&orion_ehci1);
350 platform_device_register(&orion_i2c);
351 }
352
353 /*
354 * Many orion-based systems have buggy bootloader implementations.
355 * This is a common fixup for bogus memory tags.
356 */
357 void __init tag_fixup_mem32(struct machine_desc *mdesc, struct tag *t,
358 char **from, struct meminfo *meminfo)
359 {
360 for (; t->hdr.size; t = tag_next(t))
361 if (t->hdr.tag == ATAG_MEM &&
362 (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
363 t->u.mem.start & ~PAGE_MASK)) {
364 printk(KERN_WARNING
365 "Clearing invalid memory bank %dKB@0x%08x\n",
366 t->u.mem.size / 1024, t->u.mem.start);
367 t->hdr.tag = 0;
368 }
369 }
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