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_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");
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) {
73 #ifdef CONFIG_BCM47XX_BCMA
74 case BCM47XX_BUS_TYPE_BCMA
:
75 bcma_chipco_watchdog_timer_set(&bcm47xx_bus
.bcma
.bus
.drv_cc
, 1);
83 static void bcm47xx_machine_halt(void)
85 /* Disable interrupts and watchdog and spin forever */
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);
93 #ifdef CONFIG_BCM47XX_BCMA
94 case BCM47XX_BUS_TYPE_BCMA
:
95 bcma_chipco_watchdog_timer_set(&bcm47xx_bus
.bcma
.bus
.drv_cc
, 0);
103 #ifdef CONFIG_BCM47XX_SSB
104 static int bcm47xx_get_invariants(struct ssb_bus
*bus
,
105 struct ssb_init_invariants
*iv
)
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);
123 static void __init
bcm47xx_register_ssb(void)
127 struct ssb_mipscore
*mcore
;
129 err
= ssb_bus_ssbbus_register(&bcm47xx_bus
.ssb
, SSB_ENUM_BASE
,
130 bcm47xx_get_invariants
);
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],
144 memcpy(&mcore
->serial_ports
[1], &port
, sizeof(port
));
150 #ifdef CONFIG_BCM47XX_BCMA
151 static void __init
bcm47xx_register_bcma(void)
155 err
= bcma_host_soc_register(&bcm47xx_bus
.bcma
);
157 panic("Failed to register BCMA bus (err %d)", err
);
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
= ¤t_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();
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
);
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
) {
206 err
= bcma_host_soc_init(&bcm47xx_bus
.bcma
);
208 panic("Failed to initialize BCMA bus (err %d)", err
);
210 bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus
.bcma
.bus
.boardinfo
,
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
:
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
)
243 arch_initcall(bcm47xx_cpu_fixes
);
245 static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata
= {
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
:
259 #ifdef CONFIG_BCM47XX_BCMA
260 case BCM47XX_BUS_TYPE_BCMA
:
261 bcma_bus_register(&bcm47xx_bus
.bcma
.bus
);
265 bcm47xx_buttons_register();
266 bcm47xx_leds_register();
267 bcm47xx_workarounds();
269 fixed_phy_add(PHY_POLL
, 0, &bcm47xx_fixed_phy_status
);
272 device_initcall(bcm47xx_register_bus_complete
);