mtd: dc21285: use raw spinlock functions for nw_gpio_lock
[linux/fpc-iii.git] / arch / mips / bcm47xx / setup.c
blob82ff9fd2ab6ef6c68d4caed686300299fc9bd59e
1 /*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
3 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2006 Michael Buesch <m@bues.ch>
5 * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
6 * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
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.
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.
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.
29 #include "bcm47xx_private.h"
31 #include <linux/export.h>
32 #include <linux/types.h>
33 #include <linux/ethtool.h>
34 #include <linux/phy.h>
35 #include <linux/phy_fixed.h>
36 #include <linux/ssb/ssb.h>
37 #include <linux/ssb/ssb_embedded.h>
38 #include <linux/bcma/bcma_soc.h>
39 #include <asm/bootinfo.h>
40 #include <asm/idle.h>
41 #include <asm/prom.h>
42 #include <asm/reboot.h>
43 #include <asm/time.h>
44 #include <bcm47xx.h>
45 #include <bcm47xx_board.h>
47 union bcm47xx_bus bcm47xx_bus;
48 EXPORT_SYMBOL(bcm47xx_bus);
50 enum bcm47xx_bus_type bcm47xx_bus_type;
51 EXPORT_SYMBOL(bcm47xx_bus_type);
53 static void bcm47xx_machine_restart(char *command)
55 pr_alert("Please stand by while rebooting the system...\n");
56 local_irq_disable();
57 /* Set the watchdog timer to reset immediately */
58 switch (bcm47xx_bus_type) {
59 #ifdef CONFIG_BCM47XX_SSB
60 case BCM47XX_BUS_TYPE_SSB:
61 if (bcm47xx_bus.ssb.chip_id == 0x4785)
62 write_c0_diag4(1 << 22);
63 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
64 if (bcm47xx_bus.ssb.chip_id == 0x4785) {
65 __asm__ __volatile__(
66 ".set\tmips3\n\t"
67 "sync\n\t"
68 "wait\n\t"
69 ".set\tmips0");
71 break;
72 #endif
73 #ifdef CONFIG_BCM47XX_BCMA
74 case BCM47XX_BUS_TYPE_BCMA:
75 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
76 break;
77 #endif
79 while (1)
80 cpu_relax();
83 static void bcm47xx_machine_halt(void)
85 /* Disable interrupts and watchdog and spin forever */
86 local_irq_disable();
87 switch (bcm47xx_bus_type) {
88 #ifdef CONFIG_BCM47XX_SSB
89 case BCM47XX_BUS_TYPE_SSB:
90 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
91 break;
92 #endif
93 #ifdef CONFIG_BCM47XX_BCMA
94 case BCM47XX_BUS_TYPE_BCMA:
95 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
96 break;
97 #endif
99 while (1)
100 cpu_relax();
103 #ifdef CONFIG_BCM47XX_SSB
104 static int bcm47xx_get_invariants(struct ssb_bus *bus,
105 struct ssb_init_invariants *iv)
107 char buf[20];
109 /* Fill boardinfo structure */
110 memset(&iv->boardinfo, 0 , sizeof(struct ssb_boardinfo));
112 bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);
114 memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
115 bcm47xx_fill_sprom(&iv->sprom, NULL, false);
117 if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
118 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
120 return 0;
123 static void __init bcm47xx_register_ssb(void)
125 int err;
126 char buf[100];
127 struct ssb_mipscore *mcore;
129 err = ssb_bus_ssbbus_register(&bcm47xx_bus.ssb, SSB_ENUM_BASE,
130 bcm47xx_get_invariants);
131 if (err)
132 panic("Failed to initialize SSB bus (err %d)", err);
134 mcore = &bcm47xx_bus.ssb.mipscore;
135 if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
136 if (strstr(buf, "console=ttyS1")) {
137 struct ssb_serial_port port;
139 pr_debug("Swapping serial ports!\n");
140 /* swap serial ports */
141 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
142 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
143 sizeof(port));
144 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
148 #endif
150 #ifdef CONFIG_BCM47XX_BCMA
151 static void __init bcm47xx_register_bcma(void)
153 int err;
155 err = bcma_host_soc_register(&bcm47xx_bus.bcma);
156 if (err)
157 panic("Failed to register BCMA bus (err %d)", err);
159 #endif
162 * Memory setup is done in the early part of MIPS's arch_mem_init. It's supposed
163 * to detect memory and record it with add_memory_region.
164 * Any extra initializaion performed here must not use kmalloc or bootmem.
166 void __init plat_mem_setup(void)
168 struct cpuinfo_mips *c = &current_cpu_data;
170 if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K)) {
171 pr_info("Using bcma bus\n");
172 #ifdef CONFIG_BCM47XX_BCMA
173 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
174 bcm47xx_sprom_register_fallbacks();
175 bcm47xx_register_bcma();
176 bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
177 #ifdef CONFIG_HIGHMEM
178 bcm47xx_prom_highmem_init();
179 #endif
180 #endif
181 } else {
182 pr_info("Using ssb bus\n");
183 #ifdef CONFIG_BCM47XX_SSB
184 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
185 bcm47xx_sprom_register_fallbacks();
186 bcm47xx_register_ssb();
187 bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id);
188 #endif
191 _machine_restart = bcm47xx_machine_restart;
192 _machine_halt = bcm47xx_machine_halt;
193 pm_power_off = bcm47xx_machine_halt;
197 * This finishes bus initialization doing things that were not possible without
198 * kmalloc. Make sure to call it late enough (after mm_init).
200 void __init bcm47xx_bus_setup(void)
202 #ifdef CONFIG_BCM47XX_BCMA
203 if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
204 int err;
206 err = bcma_host_soc_init(&bcm47xx_bus.bcma);
207 if (err)
208 panic("Failed to initialize BCMA bus (err %d)", err);
210 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo,
211 NULL);
213 #endif
215 /* With bus initialized we can access NVRAM and detect the board */
216 bcm47xx_board_detect();
217 mips_set_machine_name(bcm47xx_board_get_name());
220 static int __init bcm47xx_cpu_fixes(void)
222 switch (bcm47xx_bus_type) {
223 #ifdef CONFIG_BCM47XX_SSB
224 case BCM47XX_BUS_TYPE_SSB:
225 /* Nothing to do */
226 break;
227 #endif
228 #ifdef CONFIG_BCM47XX_BCMA
229 case BCM47XX_BUS_TYPE_BCMA:
230 /* The BCM4706 has a problem with the CPU wait instruction.
231 * When r4k_wait or r4k_wait_irqoff is used will just hang and
232 * not return from a msleep(). Removing the cpu_wait
233 * functionality is a workaround for this problem. The BCM4716
234 * does not have this problem.
236 if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
237 cpu_wait = NULL;
238 break;
239 #endif
241 return 0;
243 arch_initcall(bcm47xx_cpu_fixes);
245 static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = {
246 .link = 1,
247 .speed = SPEED_100,
248 .duplex = DUPLEX_FULL,
251 static int __init bcm47xx_register_bus_complete(void)
253 switch (bcm47xx_bus_type) {
254 #ifdef CONFIG_BCM47XX_SSB
255 case BCM47XX_BUS_TYPE_SSB:
256 /* Nothing to do */
257 break;
258 #endif
259 #ifdef CONFIG_BCM47XX_BCMA
260 case BCM47XX_BUS_TYPE_BCMA:
261 bcma_bus_register(&bcm47xx_bus.bcma.bus);
262 break;
263 #endif
265 bcm47xx_buttons_register();
266 bcm47xx_leds_register();
267 bcm47xx_workarounds();
269 fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
270 return 0;
272 device_initcall(bcm47xx_register_bus_complete);