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1c0c13eb AJ |
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> |
f384b3dd | 6 | * Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de> |
1c0c13eb AJ |
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 | ||
cae39d13 | 29 | #include <linux/export.h> |
1c0c13eb AJ |
30 | #include <linux/types.h> |
31 | #include <linux/ssb/ssb.h> | |
b06f3e19 | 32 | #include <linux/ssb/ssb_embedded.h> |
c1d1c5d4 | 33 | #include <linux/bcma/bcma_soc.h> |
25e5fb97 | 34 | #include <asm/bootinfo.h> |
1c0c13eb AJ |
35 | #include <asm/reboot.h> |
36 | #include <asm/time.h> | |
37 | #include <bcm47xx.h> | |
111bd981 | 38 | #include <bcm47xx_nvram.h> |
786c497a | 39 | #include <bcm47xx_board.h> |
1c0c13eb | 40 | |
08ccf572 HM |
41 | union bcm47xx_bus bcm47xx_bus; |
42 | EXPORT_SYMBOL(bcm47xx_bus); | |
43 | ||
44 | enum bcm47xx_bus_type bcm47xx_bus_type; | |
45 | EXPORT_SYMBOL(bcm47xx_bus_type); | |
1c0c13eb AJ |
46 | |
47 | static void bcm47xx_machine_restart(char *command) | |
48 | { | |
49 | printk(KERN_ALERT "Please stand by while rebooting the system...\n"); | |
50 | local_irq_disable(); | |
51 | /* Set the watchdog timer to reset immediately */ | |
08ccf572 | 52 | switch (bcm47xx_bus_type) { |
a656ffcb | 53 | #ifdef CONFIG_BCM47XX_SSB |
08ccf572 HM |
54 | case BCM47XX_BUS_TYPE_SSB: |
55 | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1); | |
56 | break; | |
c1d1c5d4 HM |
57 | #endif |
58 | #ifdef CONFIG_BCM47XX_BCMA | |
59 | case BCM47XX_BUS_TYPE_BCMA: | |
60 | bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1); | |
61 | break; | |
a656ffcb | 62 | #endif |
08ccf572 | 63 | } |
1c0c13eb AJ |
64 | while (1) |
65 | cpu_relax(); | |
66 | } | |
67 | ||
68 | static void bcm47xx_machine_halt(void) | |
69 | { | |
70 | /* Disable interrupts and watchdog and spin forever */ | |
71 | local_irq_disable(); | |
08ccf572 | 72 | switch (bcm47xx_bus_type) { |
a656ffcb | 73 | #ifdef CONFIG_BCM47XX_SSB |
08ccf572 HM |
74 | case BCM47XX_BUS_TYPE_SSB: |
75 | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0); | |
76 | break; | |
c1d1c5d4 HM |
77 | #endif |
78 | #ifdef CONFIG_BCM47XX_BCMA | |
79 | case BCM47XX_BUS_TYPE_BCMA: | |
80 | bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0); | |
81 | break; | |
a656ffcb | 82 | #endif |
08ccf572 | 83 | } |
1c0c13eb AJ |
84 | while (1) |
85 | cpu_relax(); | |
86 | } | |
87 | ||
a656ffcb | 88 | #ifdef CONFIG_BCM47XX_SSB |
f384b3dd | 89 | static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out) |
fe6f3642 HM |
90 | { |
91 | char prefix[10]; | |
92 | ||
93 | if (bus->bustype == SSB_BUSTYPE_PCI) { | |
5fe2e071 | 94 | memset(out, 0, sizeof(struct ssb_sprom)); |
fe6f3642 HM |
95 | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", |
96 | bus->host_pci->bus->number + 1, | |
97 | PCI_SLOT(bus->host_pci->devfn)); | |
b8ebbaff | 98 | bcm47xx_fill_sprom(out, prefix, false); |
fe6f3642 HM |
99 | return 0; |
100 | } else { | |
101 | printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); | |
102 | return -EINVAL; | |
103 | } | |
104 | } | |
105 | ||
1c0c13eb | 106 | static int bcm47xx_get_invariants(struct ssb_bus *bus, |
f384b3dd | 107 | struct ssb_init_invariants *iv) |
1c0c13eb | 108 | { |
2aa088d6 | 109 | char buf[20]; |
25e5fb97 AJ |
110 | |
111 | /* Fill boardinfo structure */ | |
112 | memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); | |
113 | ||
a9bba182 | 114 | bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); |
25e5fb97 | 115 | |
5fe2e071 | 116 | memset(&iv->sprom, 0, sizeof(struct ssb_sprom)); |
b8ebbaff | 117 | bcm47xx_fill_sprom(&iv->sprom, NULL, false); |
121915c4 | 118 | |
111bd981 | 119 | if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) |
2aa088d6 | 120 | iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); |
25e5fb97 | 121 | |
1c0c13eb AJ |
122 | return 0; |
123 | } | |
124 | ||
08ccf572 | 125 | static void __init bcm47xx_register_ssb(void) |
1c0c13eb AJ |
126 | { |
127 | int err; | |
1690a7f9 HM |
128 | char buf[100]; |
129 | struct ssb_mipscore *mcore; | |
1c0c13eb | 130 | |
f384b3dd | 131 | err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb); |
fe6f3642 HM |
132 | if (err) |
133 | printk(KERN_WARNING "bcm47xx: someone else already registered" | |
134 | " a ssb SPROM callback handler (err %d)\n", err); | |
135 | ||
08ccf572 | 136 | err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, |
1c0c13eb AJ |
137 | bcm47xx_get_invariants); |
138 | if (err) | |
ab75dc02 | 139 | panic("Failed to initialize SSB bus (err %d)", err); |
1c0c13eb | 140 | |
08ccf572 | 141 | mcore = &bcm47xx_bus.ssb.mipscore; |
111bd981 | 142 | if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { |
1690a7f9 HM |
143 | if (strstr(buf, "console=ttyS1")) { |
144 | struct ssb_serial_port port; | |
145 | ||
146 | printk(KERN_DEBUG "Swapping serial ports!\n"); | |
147 | /* swap serial ports */ | |
148 | memcpy(&port, &mcore->serial_ports[0], sizeof(port)); | |
149 | memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], | |
150 | sizeof(port)); | |
151 | memcpy(&mcore->serial_ports[1], &port, sizeof(port)); | |
152 | } | |
153 | } | |
08ccf572 | 154 | } |
a656ffcb | 155 | #endif |
08ccf572 | 156 | |
c1d1c5d4 | 157 | #ifdef CONFIG_BCM47XX_BCMA |
f384b3dd HM |
158 | static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out) |
159 | { | |
160 | char prefix[10]; | |
161 | struct bcma_device *core; | |
162 | ||
163 | switch (bus->hosttype) { | |
164 | case BCMA_HOSTTYPE_PCI: | |
5fe2e071 | 165 | memset(out, 0, sizeof(struct ssb_sprom)); |
f384b3dd HM |
166 | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", |
167 | bus->host_pci->bus->number + 1, | |
168 | PCI_SLOT(bus->host_pci->devfn)); | |
b8ebbaff | 169 | bcm47xx_fill_sprom(out, prefix, false); |
f384b3dd HM |
170 | return 0; |
171 | case BCMA_HOSTTYPE_SOC: | |
5fe2e071 | 172 | memset(out, 0, sizeof(struct ssb_sprom)); |
f384b3dd HM |
173 | core = bcma_find_core(bus, BCMA_CORE_80211); |
174 | if (core) { | |
175 | snprintf(prefix, sizeof(prefix), "sb/%u/", | |
176 | core->core_index); | |
b8ebbaff | 177 | bcm47xx_fill_sprom(out, prefix, true); |
2c376311 | 178 | } else { |
b8ebbaff | 179 | bcm47xx_fill_sprom(out, NULL, false); |
f384b3dd HM |
180 | } |
181 | return 0; | |
182 | default: | |
183 | pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n"); | |
184 | return -EINVAL; | |
185 | } | |
186 | } | |
187 | ||
c1d1c5d4 HM |
188 | static void __init bcm47xx_register_bcma(void) |
189 | { | |
190 | int err; | |
191 | ||
f384b3dd HM |
192 | err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma); |
193 | if (err) | |
194 | pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err); | |
195 | ||
c1d1c5d4 HM |
196 | err = bcma_host_soc_register(&bcm47xx_bus.bcma); |
197 | if (err) | |
ab75dc02 | 198 | panic("Failed to initialize BCMA bus (err %d)", err); |
0a2fcaa7 HM |
199 | |
200 | bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); | |
c1d1c5d4 HM |
201 | } |
202 | #endif | |
203 | ||
08ccf572 HM |
204 | void __init plat_mem_setup(void) |
205 | { | |
206 | struct cpuinfo_mips *c = ¤t_cpu_data; | |
207 | ||
c1d1c5d4 HM |
208 | if (c->cputype == CPU_74K) { |
209 | printk(KERN_INFO "bcm47xx: using bcma bus\n"); | |
210 | #ifdef CONFIG_BCM47XX_BCMA | |
211 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; | |
212 | bcm47xx_register_bcma(); | |
dd573285 | 213 | bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id); |
c1d1c5d4 HM |
214 | #endif |
215 | } else { | |
216 | printk(KERN_INFO "bcm47xx: using ssb bus\n"); | |
a656ffcb | 217 | #ifdef CONFIG_BCM47XX_SSB |
c1d1c5d4 HM |
218 | bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; |
219 | bcm47xx_register_ssb(); | |
dd573285 | 220 | bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id); |
a656ffcb | 221 | #endif |
c1d1c5d4 | 222 | } |
1690a7f9 | 223 | |
1c0c13eb AJ |
224 | _machine_restart = bcm47xx_machine_restart; |
225 | _machine_halt = bcm47xx_machine_halt; | |
226 | pm_power_off = bcm47xx_machine_halt; | |
786c497a | 227 | bcm47xx_board_detect(); |
1c0c13eb | 228 | } |
c1d1c5d4 HM |
229 | |
230 | static int __init bcm47xx_register_bus_complete(void) | |
231 | { | |
232 | switch (bcm47xx_bus_type) { | |
233 | #ifdef CONFIG_BCM47XX_SSB | |
234 | case BCM47XX_BUS_TYPE_SSB: | |
235 | /* Nothing to do */ | |
236 | break; | |
237 | #endif | |
238 | #ifdef CONFIG_BCM47XX_BCMA | |
239 | case BCM47XX_BUS_TYPE_BCMA: | |
240 | bcma_bus_register(&bcm47xx_bus.bcma.bus); | |
241 | break; | |
242 | #endif | |
243 | } | |
244 | return 0; | |
245 | } | |
246 | device_initcall(bcm47xx_register_bus_complete); |