bcm47xx: prepare to support different buses
[deliverable/linux.git] / arch / mips / bcm47xx / setup.c
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1/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
1c0c13eb 3 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
eb032b98 4 * Copyright (C) 2006 Michael Buesch <m@bues.ch>
121915c4 5 * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
fe6f3642 6 * Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
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7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/types.h>
30#include <linux/ssb/ssb.h>
b06f3e19 31#include <linux/ssb/ssb_embedded.h>
25e5fb97 32#include <asm/bootinfo.h>
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33#include <asm/reboot.h>
34#include <asm/time.h>
35#include <bcm47xx.h>
121915c4 36#include <asm/mach-bcm47xx/nvram.h>
1c0c13eb 37
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38union bcm47xx_bus bcm47xx_bus;
39EXPORT_SYMBOL(bcm47xx_bus);
40
41enum bcm47xx_bus_type bcm47xx_bus_type;
42EXPORT_SYMBOL(bcm47xx_bus_type);
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43
44static void bcm47xx_machine_restart(char *command)
45{
46 printk(KERN_ALERT "Please stand by while rebooting the system...\n");
47 local_irq_disable();
48 /* Set the watchdog timer to reset immediately */
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49 switch (bcm47xx_bus_type) {
50 case BCM47XX_BUS_TYPE_SSB:
51 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
52 break;
53 }
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54 while (1)
55 cpu_relax();
56}
57
58static void bcm47xx_machine_halt(void)
59{
60 /* Disable interrupts and watchdog and spin forever */
61 local_irq_disable();
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62 switch (bcm47xx_bus_type) {
63 case BCM47XX_BUS_TYPE_SSB:
64 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
65 break;
66 }
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67 while (1)
68 cpu_relax();
69}
70
2aa088d6 71#define READ_FROM_NVRAM(_outvar, name, buf) \
a7c62f85 72 if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
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73 sprom->_outvar = simple_strtoul(buf, NULL, 0);
74
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75#define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \
76 if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \
77 nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\
78 sprom->_outvar = simple_strtoul(buf, NULL, 0);
79
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80static inline int nvram_getprefix(const char *prefix, char *name,
81 char *buf, int len)
82{
83 if (prefix) {
84 char key[100];
85
86 snprintf(key, sizeof(key), "%s%s", prefix, name);
87 return nvram_getenv(key, buf, len);
88 }
89
90 return nvram_getenv(name, buf, len);
91}
92
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93static u32 nvram_getu32(const char *name, char *buf, int len)
94{
95 int rv;
96 char key[100];
97 u16 var0, var1;
98
99 snprintf(key, sizeof(key), "%s0", name);
100 rv = nvram_getenv(key, buf, len);
101 /* return 0 here so this looks like unset */
102 if (rv < 0)
103 return 0;
104 var0 = simple_strtoul(buf, NULL, 0);
105
106 snprintf(key, sizeof(key), "%s1", name);
107 rv = nvram_getenv(key, buf, len);
108 if (rv < 0)
109 return 0;
110 var1 = simple_strtoul(buf, NULL, 0);
111 return var1 << 16 | var0;
112}
113
a7c62f85 114static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
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115{
116 char buf[100];
117 u32 boardflags;
118
119 memset(sprom, 0, sizeof(struct ssb_sprom));
120
121 sprom->revision = 1; /* Fallback: Old hardware does not define this. */
122 READ_FROM_NVRAM(revision, "sromrev", buf);
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123 if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 ||
124 nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0)
59833fcf 125 nvram_parse_macaddr(buf, sprom->il0mac);
a7c62f85 126 if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0)
59833fcf 127 nvram_parse_macaddr(buf, sprom->et0mac);
a7c62f85 128 if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0)
59833fcf 129 nvram_parse_macaddr(buf, sprom->et1mac);
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130 READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
131 READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
132 READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
133 READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
134 READ_FROM_NVRAM(board_rev, "boardrev", buf);
135 READ_FROM_NVRAM(country_code, "ccode", buf);
136 READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
137 READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
138 READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
139 READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
140 READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
141 READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
142 READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
143 READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
144 READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
145 READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
146 READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
147 READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
148 READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
149 READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
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150 READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf);
151 READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf);
152 READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf);
153 READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf);
154 READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf);
155 READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf);
156 READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf);
157 READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf);
158 READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf);
159 READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf);
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160 READ_FROM_NVRAM(tri2g, "tri2g", buf);
161 READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
162 READ_FROM_NVRAM(tri5g, "tri5g", buf);
163 READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
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164 READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf);
165 READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf);
166 READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf);
167 READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf);
168 READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf);
169 READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf);
170 READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf);
171 READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf);
172 READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf);
173 READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf);
174 READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf);
175 READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf);
176 READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf);
177 READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf);
178 READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf);
179 READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf);
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180 READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
181 READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
182 READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
183 READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
184 READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
185 READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
186 READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
187 READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
188 READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
189 READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
190 READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
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191
192 sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf));
193 sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf));
194 sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf));
195 sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf));
196
197 READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf);
198 READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf);
199 READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf);
200 READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf);
201 memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24,
202 sizeof(sprom->antenna_gain.ghz5));
2aa088d6 203
a7c62f85 204 if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) {
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205 boardflags = simple_strtoul(buf, NULL, 0);
206 if (boardflags) {
207 sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
208 sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
209 }
210 }
a7c62f85 211 if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) {
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212 boardflags = simple_strtoul(buf, NULL, 0);
213 if (boardflags) {
214 sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
215 sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
216 }
217 }
218}
219
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220int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
221{
222 char prefix[10];
223
224 if (bus->bustype == SSB_BUSTYPE_PCI) {
225 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
226 bus->host_pci->bus->number + 1,
227 PCI_SLOT(bus->host_pci->devfn));
228 bcm47xx_fill_sprom(out, prefix);
229 return 0;
230 } else {
231 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
232 return -EINVAL;
233 }
234}
235
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236static int bcm47xx_get_invariants(struct ssb_bus *bus,
237 struct ssb_init_invariants *iv)
238{
2aa088d6 239 char buf[20];
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240
241 /* Fill boardinfo structure */
242 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
243
82571084 244 if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
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245 iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
246 else
247 iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
82571084 248 if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
25e5fb97 249 iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
82571084 250 if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
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251 iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
252
a7c62f85 253 bcm47xx_fill_sprom(&iv->sprom, NULL);
121915c4 254
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255 if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
256 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
25e5fb97 257
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258 return 0;
259}
260
08ccf572 261static void __init bcm47xx_register_ssb(void)
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262{
263 int err;
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264 char buf[100];
265 struct ssb_mipscore *mcore;
1c0c13eb 266
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267 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
268 if (err)
269 printk(KERN_WARNING "bcm47xx: someone else already registered"
270 " a ssb SPROM callback handler (err %d)\n", err);
271
08ccf572 272 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
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273 bcm47xx_get_invariants);
274 if (err)
275 panic("Failed to initialize SSB bus (err %d)\n", err);
276
08ccf572 277 mcore = &bcm47xx_bus.ssb.mipscore;
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278 if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
279 if (strstr(buf, "console=ttyS1")) {
280 struct ssb_serial_port port;
281
282 printk(KERN_DEBUG "Swapping serial ports!\n");
283 /* swap serial ports */
284 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
285 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
286 sizeof(port));
287 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
288 }
289 }
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290}
291
292void __init plat_mem_setup(void)
293{
294 struct cpuinfo_mips *c = &current_cpu_data;
295
296 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
297 bcm47xx_register_ssb();
1690a7f9 298
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299 _machine_restart = bcm47xx_machine_restart;
300 _machine_halt = bcm47xx_machine_halt;
301 pm_power_off = bcm47xx_machine_halt;
1c0c13eb 302}
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