Commit | Line | Data |
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7171d867 AC |
1 | /* |
2 | * arch/arm/mach-orion5x/ts78xx-setup.c | |
3 | * | |
4 | * Maintainer: Alexander Clouter <alex@digriz.org.uk> | |
5 | * | |
6 | * This file is licensed under the terms of the GNU General Public | |
7 | * License version 2. This program is licensed "as is" without any | |
8 | * warranty of any kind, whether express or implied. | |
9 | */ | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/init.h> | |
39008f95 | 13 | #include <linux/sysfs.h> |
7171d867 | 14 | #include <linux/platform_device.h> |
7171d867 AC |
15 | #include <linux/mv643xx_eth.h> |
16 | #include <linux/ata_platform.h> | |
17 | #include <linux/m48t86.h> | |
18 | #include <asm/mach-types.h> | |
19 | #include <asm/mach/arch.h> | |
20 | #include <asm/mach/map.h> | |
a09e64fb | 21 | #include <mach/orion5x.h> |
7171d867 AC |
22 | #include "common.h" |
23 | #include "mpp.h" | |
39008f95 | 24 | #include "ts78xx-fpga.h" |
7171d867 AC |
25 | |
26 | /***************************************************************************** | |
27 | * TS-78xx Info | |
28 | ****************************************************************************/ | |
29 | ||
30 | /* | |
31 | * FPGA - lives where the PCI bus would be at ORION5X_PCI_MEM_PHYS_BASE | |
32 | */ | |
33 | #define TS78XX_FPGA_REGS_PHYS_BASE 0xe8000000 | |
34 | #define TS78XX_FPGA_REGS_VIRT_BASE 0xff900000 | |
35 | #define TS78XX_FPGA_REGS_SIZE SZ_1M | |
36 | ||
39008f95 AC |
37 | static struct ts78xx_fpga_data ts78xx_fpga = { |
38 | .id = 0, | |
39 | .state = 1, | |
40 | /* .supports = ... - populated by ts78xx_fpga_supports() */ | |
41 | }; | |
7171d867 | 42 | |
7171d867 AC |
43 | /***************************************************************************** |
44 | * I/O Address Mapping | |
45 | ****************************************************************************/ | |
46 | static struct map_desc ts78xx_io_desc[] __initdata = { | |
47 | { | |
48 | .virtual = TS78XX_FPGA_REGS_VIRT_BASE, | |
49 | .pfn = __phys_to_pfn(TS78XX_FPGA_REGS_PHYS_BASE), | |
50 | .length = TS78XX_FPGA_REGS_SIZE, | |
51 | .type = MT_DEVICE, | |
52 | }, | |
53 | }; | |
54 | ||
55 | void __init ts78xx_map_io(void) | |
56 | { | |
57 | orion5x_map_io(); | |
58 | iotable_init(ts78xx_io_desc, ARRAY_SIZE(ts78xx_io_desc)); | |
59 | } | |
60 | ||
7171d867 AC |
61 | /***************************************************************************** |
62 | * Ethernet | |
63 | ****************************************************************************/ | |
64 | static struct mv643xx_eth_platform_data ts78xx_eth_data = { | |
ac840605 | 65 | .phy_addr = MV643XX_ETH_PHY_ADDR(0), |
7171d867 AC |
66 | }; |
67 | ||
39008f95 AC |
68 | /***************************************************************************** |
69 | * SATA | |
70 | ****************************************************************************/ | |
71 | static struct mv_sata_platform_data ts78xx_sata_data = { | |
72 | .n_ports = 2, | |
73 | }; | |
74 | ||
7171d867 AC |
75 | /***************************************************************************** |
76 | * RTC M48T86 - nicked^Wborrowed from arch/arm/mach-ep93xx/ts72xx.c | |
77 | ****************************************************************************/ | |
39008f95 AC |
78 | #define TS_RTC_CTRL (TS78XX_FPGA_REGS_VIRT_BASE | 0x808) |
79 | #define TS_RTC_DATA (TS78XX_FPGA_REGS_VIRT_BASE | 0x80c) | |
80 | ||
81 | static unsigned char ts78xx_ts_rtc_readbyte(unsigned long addr) | |
7171d867 | 82 | { |
39008f95 AC |
83 | writeb(addr, TS_RTC_CTRL); |
84 | return readb(TS_RTC_DATA); | |
7171d867 AC |
85 | } |
86 | ||
39008f95 | 87 | static void ts78xx_ts_rtc_writebyte(unsigned char value, unsigned long addr) |
7171d867 | 88 | { |
39008f95 AC |
89 | writeb(addr, TS_RTC_CTRL); |
90 | writeb(value, TS_RTC_DATA); | |
7171d867 AC |
91 | } |
92 | ||
39008f95 AC |
93 | static struct m48t86_ops ts78xx_ts_rtc_ops = { |
94 | .readbyte = ts78xx_ts_rtc_readbyte, | |
95 | .writebyte = ts78xx_ts_rtc_writebyte, | |
7171d867 AC |
96 | }; |
97 | ||
39008f95 | 98 | static struct platform_device ts78xx_ts_rtc_device = { |
7171d867 AC |
99 | .name = "rtc-m48t86", |
100 | .id = -1, | |
101 | .dev = { | |
39008f95 | 102 | .platform_data = &ts78xx_ts_rtc_ops, |
7171d867 AC |
103 | }, |
104 | .num_resources = 0, | |
105 | }; | |
106 | ||
107 | /* | |
108 | * TS uses some of the user storage space on the RTC chip so see if it is | |
109 | * present; as it's an optional feature at purchase time and not all boards | |
110 | * will have it present | |
111 | * | |
112 | * I've used the method TS use in their rtc7800.c example for the detection | |
113 | * | |
114 | * TODO: track down a guinea pig without an RTC to see if we can work out a | |
115 | * better RTC detection routine | |
116 | */ | |
39008f95 | 117 | static int ts78xx_ts_rtc_load(void) |
7171d867 | 118 | { |
f5273fa3 | 119 | int rc; |
7171d867 AC |
120 | unsigned char tmp_rtc0, tmp_rtc1; |
121 | ||
39008f95 AC |
122 | tmp_rtc0 = ts78xx_ts_rtc_readbyte(126); |
123 | tmp_rtc1 = ts78xx_ts_rtc_readbyte(127); | |
124 | ||
125 | ts78xx_ts_rtc_writebyte(0x00, 126); | |
126 | ts78xx_ts_rtc_writebyte(0x55, 127); | |
127 | if (ts78xx_ts_rtc_readbyte(127) == 0x55) { | |
128 | ts78xx_ts_rtc_writebyte(0xaa, 127); | |
129 | if (ts78xx_ts_rtc_readbyte(127) == 0xaa | |
130 | && ts78xx_ts_rtc_readbyte(126) == 0x00) { | |
131 | ts78xx_ts_rtc_writebyte(tmp_rtc0, 126); | |
132 | ts78xx_ts_rtc_writebyte(tmp_rtc1, 127); | |
f5273fa3 | 133 | |
39008f95 | 134 | if (ts78xx_fpga.supports.ts_rtc.init == 0) { |
f5273fa3 AC |
135 | rc = platform_device_register(&ts78xx_ts_rtc_device); |
136 | if (!rc) | |
137 | ts78xx_fpga.supports.ts_rtc.init = 1; | |
39008f95 | 138 | } else |
f5273fa3 AC |
139 | rc = platform_device_add(&ts78xx_ts_rtc_device); |
140 | ||
141 | return rc; | |
7171d867 AC |
142 | } |
143 | } | |
144 | ||
39008f95 | 145 | return -ENODEV; |
7171d867 | 146 | }; |
39008f95 AC |
147 | |
148 | static void ts78xx_ts_rtc_unload(void) | |
149 | { | |
150 | platform_device_del(&ts78xx_ts_rtc_device); | |
151 | } | |
7171d867 AC |
152 | |
153 | /***************************************************************************** | |
39008f95 | 154 | * FPGA 'hotplug' support code |
7171d867 | 155 | ****************************************************************************/ |
39008f95 AC |
156 | static void ts78xx_fpga_devices_zero_init(void) |
157 | { | |
158 | ts78xx_fpga.supports.ts_rtc.init = 0; | |
159 | } | |
160 | ||
161 | static void ts78xx_fpga_supports(void) | |
162 | { | |
163 | /* TODO: put this 'table' into ts78xx-fpga.h */ | |
164 | switch (ts78xx_fpga.id) { | |
165 | case TS7800_REV_B: | |
166 | ts78xx_fpga.supports.ts_rtc.present = 1; | |
167 | break; | |
168 | default: | |
169 | ts78xx_fpga.supports.ts_rtc.present = 0; | |
170 | } | |
171 | } | |
172 | ||
173 | static int ts78xx_fpga_load_devices(void) | |
174 | { | |
175 | int tmp, ret = 0; | |
176 | ||
177 | if (ts78xx_fpga.supports.ts_rtc.present == 1) { | |
178 | tmp = ts78xx_ts_rtc_load(); | |
f5273fa3 | 179 | if (tmp) { |
673492a8 | 180 | printk(KERN_INFO "TS-78xx: RTC not registered\n"); |
f5273fa3 AC |
181 | ts78xx_fpga.supports.ts_rtc.present = 0; |
182 | } | |
39008f95 AC |
183 | ret |= tmp; |
184 | } | |
185 | ||
186 | return ret; | |
187 | } | |
188 | ||
189 | static int ts78xx_fpga_unload_devices(void) | |
190 | { | |
191 | int ret = 0; | |
192 | ||
193 | if (ts78xx_fpga.supports.ts_rtc.present == 1) | |
194 | ts78xx_ts_rtc_unload(); | |
195 | ||
196 | return ret; | |
197 | } | |
198 | ||
199 | static int ts78xx_fpga_load(void) | |
200 | { | |
201 | ts78xx_fpga.id = readl(TS78XX_FPGA_REGS_VIRT_BASE); | |
202 | ||
203 | printk(KERN_INFO "TS-78xx FPGA: magic=0x%.6x, rev=0x%.2x\n", | |
204 | (ts78xx_fpga.id >> 8) & 0xffffff, | |
205 | ts78xx_fpga.id & 0xff); | |
206 | ||
207 | ts78xx_fpga_supports(); | |
208 | ||
209 | if (ts78xx_fpga_load_devices()) { | |
210 | ts78xx_fpga.state = -1; | |
211 | return -EBUSY; | |
212 | } | |
213 | ||
214 | return 0; | |
7171d867 AC |
215 | }; |
216 | ||
39008f95 AC |
217 | static int ts78xx_fpga_unload(void) |
218 | { | |
219 | unsigned int fpga_id; | |
220 | ||
221 | fpga_id = readl(TS78XX_FPGA_REGS_VIRT_BASE); | |
222 | ||
223 | /* | |
224 | * There does not seem to be a feasible way to block access to the GPIO | |
225 | * pins from userspace (/dev/mem). This if clause should hopefully warn | |
226 | * those foolish enough not to follow 'policy' :) | |
227 | * | |
228 | * UrJTAG SVN since r1381 can be used to reprogram the FPGA | |
229 | */ | |
230 | if (ts78xx_fpga.id != fpga_id) { | |
231 | printk(KERN_ERR "TS-78xx FPGA: magic/rev mismatch\n" | |
232 | "TS-78xx FPGA: was 0x%.6x/%.2x but now 0x%.6x/%.2x\n", | |
233 | (ts78xx_fpga.id >> 8) & 0xffffff, ts78xx_fpga.id & 0xff, | |
234 | (fpga_id >> 8) & 0xffffff, fpga_id & 0xff); | |
235 | ts78xx_fpga.state = -1; | |
236 | return -EBUSY; | |
237 | } | |
238 | ||
239 | if (ts78xx_fpga_unload_devices()) { | |
240 | ts78xx_fpga.state = -1; | |
241 | return -EBUSY; | |
242 | } | |
243 | ||
244 | return 0; | |
7171d867 AC |
245 | }; |
246 | ||
39008f95 AC |
247 | static ssize_t ts78xx_fpga_show(struct kobject *kobj, |
248 | struct kobj_attribute *attr, char *buf) | |
249 | { | |
250 | if (ts78xx_fpga.state < 0) | |
251 | return sprintf(buf, "borked\n"); | |
252 | ||
253 | return sprintf(buf, "%s\n", (ts78xx_fpga.state) ? "online" : "offline"); | |
254 | } | |
255 | ||
256 | static ssize_t ts78xx_fpga_store(struct kobject *kobj, | |
257 | struct kobj_attribute *attr, const char *buf, size_t n) | |
258 | { | |
259 | int value, ret; | |
260 | ||
261 | if (ts78xx_fpga.state < 0) { | |
262 | printk(KERN_ERR "TS-78xx FPGA: borked, you must powercycle asap\n"); | |
263 | return -EBUSY; | |
264 | } | |
265 | ||
266 | if (strncmp(buf, "online", sizeof("online") - 1) == 0) | |
267 | value = 1; | |
268 | else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0) | |
269 | value = 0; | |
270 | else { | |
271 | printk(KERN_ERR "ts78xx_fpga_store: Invalid value\n"); | |
272 | return -EINVAL; | |
273 | } | |
274 | ||
275 | if (ts78xx_fpga.state == value) | |
276 | return n; | |
277 | ||
278 | ret = (ts78xx_fpga.state == 0) | |
279 | ? ts78xx_fpga_load() | |
280 | : ts78xx_fpga_unload(); | |
281 | ||
282 | if (!(ret < 0)) | |
283 | ts78xx_fpga.state = value; | |
284 | ||
285 | return n; | |
286 | } | |
287 | ||
288 | static struct kobj_attribute ts78xx_fpga_attr = | |
289 | __ATTR(ts78xx_fpga, 0644, ts78xx_fpga_show, ts78xx_fpga_store); | |
290 | ||
7171d867 AC |
291 | /***************************************************************************** |
292 | * General Setup | |
293 | ****************************************************************************/ | |
294 | static struct orion5x_mpp_mode ts78xx_mpp_modes[] __initdata = { | |
295 | { 0, MPP_UNUSED }, | |
296 | { 1, MPP_GPIO }, /* JTAG Clock */ | |
297 | { 2, MPP_GPIO }, /* JTAG Data In */ | |
298 | { 3, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB2B */ | |
299 | { 4, MPP_GPIO }, /* JTAG Data Out */ | |
300 | { 5, MPP_GPIO }, /* JTAG TMS */ | |
301 | { 6, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB31A_CLK4+ */ | |
302 | { 7, MPP_GPIO }, /* Lat ECP2 256 FPGA - PB22B */ | |
303 | { 8, MPP_UNUSED }, | |
304 | { 9, MPP_UNUSED }, | |
305 | { 10, MPP_UNUSED }, | |
306 | { 11, MPP_UNUSED }, | |
307 | { 12, MPP_UNUSED }, | |
308 | { 13, MPP_UNUSED }, | |
309 | { 14, MPP_UNUSED }, | |
310 | { 15, MPP_UNUSED }, | |
311 | { 16, MPP_UART }, | |
312 | { 17, MPP_UART }, | |
313 | { 18, MPP_UART }, | |
314 | { 19, MPP_UART }, | |
f5412860 AC |
315 | /* |
316 | * MPP[20] PCI Clock Out 1 | |
317 | * MPP[21] PCI Clock Out 0 | |
318 | * MPP[22] Unused | |
319 | * MPP[23] Unused | |
320 | * MPP[24] Unused | |
321 | * MPP[25] Unused | |
322 | */ | |
7171d867 AC |
323 | { -1 }, |
324 | }; | |
325 | ||
326 | static void __init ts78xx_init(void) | |
327 | { | |
39008f95 AC |
328 | int ret; |
329 | ||
7171d867 AC |
330 | /* |
331 | * Setup basic Orion functions. Need to be called early. | |
332 | */ | |
333 | orion5x_init(); | |
334 | ||
7171d867 AC |
335 | orion5x_mpp_conf(ts78xx_mpp_modes); |
336 | ||
7171d867 AC |
337 | /* |
338 | * Configure peripherals. | |
339 | */ | |
340 | orion5x_ehci0_init(); | |
341 | orion5x_ehci1_init(); | |
342 | orion5x_eth_init(&ts78xx_eth_data); | |
343 | orion5x_sata_init(&ts78xx_sata_data); | |
344 | orion5x_uart0_init(); | |
345 | orion5x_uart1_init(); | |
1d5a1a6e | 346 | orion5x_xor_init(); |
7171d867 | 347 | |
39008f95 AC |
348 | /* FPGA init */ |
349 | ts78xx_fpga_devices_zero_init(); | |
350 | ret = ts78xx_fpga_load(); | |
351 | ret = sysfs_create_file(power_kobj, &ts78xx_fpga_attr.attr); | |
352 | if (ret) | |
353 | printk(KERN_ERR "sysfs_create_file failed: %d\n", ret); | |
7171d867 AC |
354 | } |
355 | ||
356 | MACHINE_START(TS78XX, "Technologic Systems TS-78xx SBC") | |
357 | /* Maintainer: Alexander Clouter <alex@digriz.org.uk> */ | |
358 | .phys_io = ORION5X_REGS_PHYS_BASE, | |
359 | .io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC, | |
360 | .boot_params = 0x00000100, | |
361 | .init_machine = ts78xx_init, | |
362 | .map_io = ts78xx_map_io, | |
363 | .init_irq = orion5x_init_irq, | |
364 | .timer = &orion5x_timer, | |
365 | MACHINE_END |