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>
42 #include <asm/reboot.h>
45 #include <bcm47xx_nvram.h>
46 #include <bcm47xx_board.h>
48 union bcm47xx_bus bcm47xx_bus;
49 EXPORT_SYMBOL(bcm47xx_bus);
51 enum bcm47xx_bus_type bcm47xx_bus_type;
52 EXPORT_SYMBOL(bcm47xx_bus_type);
54 static void bcm47xx_machine_restart(char *command)
56 printk(KERN_ALERT "Please stand by while rebooting the system...\n");
58 /* Set the watchdog timer to reset immediately */
59 switch (bcm47xx_bus_type) {
60 #ifdef CONFIG_BCM47XX_SSB
61 case BCM47XX_BUS_TYPE_SSB:
62 if (bcm47xx_bus.ssb.chip_id == 0x4785)
63 write_c0_diag4(1 << 22);
64 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
65 if (bcm47xx_bus.ssb.chip_id == 0x4785) {
74 #ifdef CONFIG_BCM47XX_BCMA
75 case BCM47XX_BUS_TYPE_BCMA:
76 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
84 static void bcm47xx_machine_halt(void)
86 /* Disable interrupts and watchdog and spin forever */
88 switch (bcm47xx_bus_type) {
89 #ifdef CONFIG_BCM47XX_SSB
90 case BCM47XX_BUS_TYPE_SSB:
91 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
94 #ifdef CONFIG_BCM47XX_BCMA
95 case BCM47XX_BUS_TYPE_BCMA:
96 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
104 #ifdef CONFIG_BCM47XX_SSB
105 static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
109 if (bus->bustype == SSB_BUSTYPE_PCI) {
110 memset(out, 0, sizeof(struct ssb_sprom));
111 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
112 bus->host_pci->bus->number + 1,
113 PCI_SLOT(bus->host_pci->devfn));
114 bcm47xx_fill_sprom(out, prefix, false);
117 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
122 static int bcm47xx_get_invariants(struct ssb_bus *bus,
123 struct ssb_init_invariants *iv)
127 /* Fill boardinfo structure */
128 memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
130 bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);
132 memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
133 bcm47xx_fill_sprom(&iv->sprom, NULL, false);
135 if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
136 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
141 static void __init bcm47xx_register_ssb(void)
145 struct ssb_mipscore *mcore;
147 err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
149 printk(KERN_WARNING "bcm47xx: someone else already registered"
150 " a ssb SPROM callback handler (err %d)\n", err);
152 err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
153 bcm47xx_get_invariants);
155 panic("Failed to initialize SSB bus (err %d)", err);
157 mcore = &bcm47xx_bus.ssb.mipscore;
158 if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
159 if (strstr(buf, "console=ttyS1")) {
160 struct ssb_serial_port port;
162 printk(KERN_DEBUG "Swapping serial ports!\n");
163 /* swap serial ports */
164 memcpy(&port, &mcore->serial_ports[0], sizeof(port));
165 memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
167 memcpy(&mcore->serial_ports[1], &port, sizeof(port));
173 #ifdef CONFIG_BCM47XX_BCMA
174 static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
177 struct bcma_device *core;
179 switch (bus->hosttype) {
180 case BCMA_HOSTTYPE_PCI:
181 memset(out, 0, sizeof(struct ssb_sprom));
182 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
183 bus->host_pci->bus->number + 1,
184 PCI_SLOT(bus->host_pci->devfn));
185 bcm47xx_fill_sprom(out, prefix, false);
187 case BCMA_HOSTTYPE_SOC:
188 memset(out, 0, sizeof(struct ssb_sprom));
189 core = bcma_find_core(bus, BCMA_CORE_80211);
191 snprintf(prefix, sizeof(prefix), "sb/%u/",
193 bcm47xx_fill_sprom(out, prefix, true);
195 bcm47xx_fill_sprom(out, NULL, false);
199 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
204 static void __init bcm47xx_register_bcma(void)
208 err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
210 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
212 err = bcma_host_soc_register(&bcm47xx_bus.bcma);
214 panic("Failed to initialize BCMA bus (err %d)", err);
216 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
220 void __init plat_mem_setup(void)
222 struct cpuinfo_mips *c = ¤t_cpu_data;
224 if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K)) {
225 printk(KERN_INFO "bcm47xx: using bcma bus\n");
226 #ifdef CONFIG_BCM47XX_BCMA
227 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
228 bcm47xx_register_bcma();
229 bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
230 #ifdef CONFIG_HIGHMEM
231 bcm47xx_prom_highmem_init();
235 printk(KERN_INFO "bcm47xx: using ssb bus\n");
236 #ifdef CONFIG_BCM47XX_SSB
237 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
238 bcm47xx_register_ssb();
239 bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id);
243 _machine_restart = bcm47xx_machine_restart;
244 _machine_halt = bcm47xx_machine_halt;
245 pm_power_off = bcm47xx_machine_halt;
246 bcm47xx_board_detect();
247 mips_set_machine_name(bcm47xx_board_get_name());
250 static int __init bcm47xx_cpu_fixes(void)
252 switch (bcm47xx_bus_type) {
253 #ifdef CONFIG_BCM47XX_SSB
254 case BCM47XX_BUS_TYPE_SSB:
258 #ifdef CONFIG_BCM47XX_BCMA
259 case BCM47XX_BUS_TYPE_BCMA:
260 /* The BCM4706 has a problem with the CPU wait instruction.
261 * When r4k_wait or r4k_wait_irqoff is used will just hang and
262 * not return from a msleep(). Removing the cpu_wait
263 * functionality is a workaround for this problem. The BCM4716
264 * does not have this problem.
266 if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
273 arch_initcall(bcm47xx_cpu_fixes);
275 static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = {
278 .duplex = DUPLEX_FULL,
281 static int __init bcm47xx_register_bus_complete(void)
283 switch (bcm47xx_bus_type) {
284 #ifdef CONFIG_BCM47XX_SSB
285 case BCM47XX_BUS_TYPE_SSB:
289 #ifdef CONFIG_BCM47XX_BCMA
290 case BCM47XX_BUS_TYPE_BCMA:
291 bcma_bus_register(&bcm47xx_bus.bcma.bus);
295 bcm47xx_buttons_register();
296 bcm47xx_leds_register();
297 bcm47xx_workarounds();
299 fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
302 device_initcall(bcm47xx_register_bus_complete);