aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mips/bcm47xx
diff options
context:
space:
mode:
authorAurelien Jarno <aurelien@aurel32.net>2007-09-25 09:40:12 -0400
committerRalf Baechle <ralf@linux-mips.org>2007-10-11 18:46:02 -0400
commit1c0c13eb935c95fd2ca0b0aca6dd4860487fb242 (patch)
treea274a6e2e56f519900fb35c544ddf279f38ca8d6 /arch/mips/bcm47xx
parentea202c632a52c4a83f1bd82d8d06bc8e04f2689a (diff)
[MIPS] Add support for BCM47XX CPUs.
Note that the BCM4710 does not support the wait instruction, this is not a mistake in the code. It originally comes from the OpenWrt patches. Cc: Michael Buesch <mb@bu3sch.de> Cc: Felix Fietkau <nbd@openwrt.org> Cc: Florian Schirmer <jolt@tuxbox.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/bcm47xx')
-rw-r--r--arch/mips/bcm47xx/Makefile6
-rw-r--r--arch/mips/bcm47xx/irq.c55
-rw-r--r--arch/mips/bcm47xx/prom.c49
-rw-r--r--arch/mips/bcm47xx/serial.c52
-rw-r--r--arch/mips/bcm47xx/setup.c79
-rw-r--r--arch/mips/bcm47xx/time.c56
6 files changed, 297 insertions, 0 deletions
diff --git a/arch/mips/bcm47xx/Makefile b/arch/mips/bcm47xx/Makefile
new file mode 100644
index 000000000000..dc035f90d363
--- /dev/null
+++ b/arch/mips/bcm47xx/Makefile
@@ -0,0 +1,6 @@
1#
2# Makefile for the BCM47XX specific kernel interface routines
3# under Linux.
4#
5
6obj-y := irq.o prom.o serial.o setup.o time.o
diff --git a/arch/mips/bcm47xx/irq.c b/arch/mips/bcm47xx/irq.c
new file mode 100644
index 000000000000..325757acd020
--- /dev/null
+++ b/arch/mips/bcm47xx/irq.c
@@ -0,0 +1,55 @@
1/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
10 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
12 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
13 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
14 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
15 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
16 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
17 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
18 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25#include <linux/types.h>
26#include <linux/interrupt.h>
27#include <linux/irq.h>
28#include <asm/irq_cpu.h>
29
30void plat_irq_dispatch(void)
31{
32 u32 cause;
33
34 cause = read_c0_cause() & read_c0_status() & CAUSEF_IP;
35
36 clear_c0_status(cause);
37
38 if (cause & CAUSEF_IP7)
39 do_IRQ(7);
40 if (cause & CAUSEF_IP2)
41 do_IRQ(2);
42 if (cause & CAUSEF_IP3)
43 do_IRQ(3);
44 if (cause & CAUSEF_IP4)
45 do_IRQ(4);
46 if (cause & CAUSEF_IP5)
47 do_IRQ(5);
48 if (cause & CAUSEF_IP6)
49 do_IRQ(6);
50}
51
52void __init arch_init_irq(void)
53{
54 mips_cpu_irq_init();
55}
diff --git a/arch/mips/bcm47xx/prom.c b/arch/mips/bcm47xx/prom.c
new file mode 100644
index 000000000000..41ac9dd88bde
--- /dev/null
+++ b/arch/mips/bcm47xx/prom.c
@@ -0,0 +1,49 @@
1/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
10 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
12 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
13 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
14 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
15 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
16 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
17 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
18 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25#include <linux/init.h>
26#include <asm/bootinfo.h>
27
28const char *get_system_type(void)
29{
30 return "Broadcom BCM47XX";
31}
32
33void __init prom_init(void)
34{
35 unsigned long mem;
36
37 /* Figure out memory size by finding aliases */
38 for (mem = (1 << 20); mem < (128 << 20); mem += (1 << 20)) {
39 if (*(unsigned long *)((unsigned long)(prom_init) + mem) ==
40 *(unsigned long *)(prom_init))
41 break;
42 }
43
44 add_memory_region(0, mem, BOOT_MEM_RAM);
45}
46
47void __init prom_free_prom_memory(void)
48{
49}
diff --git a/arch/mips/bcm47xx/serial.c b/arch/mips/bcm47xx/serial.c
new file mode 100644
index 000000000000..59c11afdb2ab
--- /dev/null
+++ b/arch/mips/bcm47xx/serial.c
@@ -0,0 +1,52 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net>
7 */
8
9#include <linux/module.h>
10#include <linux/init.h>
11#include <linux/serial.h>
12#include <linux/serial_8250.h>
13#include <linux/ssb/ssb.h>
14#include <bcm47xx.h>
15
16static struct plat_serial8250_port uart8250_data[5];
17
18static struct platform_device uart8250_device = {
19 .name = "serial8250",
20 .id = PLAT8250_DEV_PLATFORM,
21 .dev = {
22 .platform_data = uart8250_data,
23 },
24};
25
26static int __init uart8250_init(void)
27{
28 int i;
29 struct ssb_mipscore *mcore = &(ssb_bcm47xx.mipscore);
30
31 memset(&uart8250_data, 0, sizeof(uart8250_data));
32
33 for (i = 0; i < mcore->nr_serial_ports; i++) {
34 struct plat_serial8250_port *p = &(uart8250_data[i]);
35 struct ssb_serial_port *ssb_port = &(mcore->serial_ports[i]);
36
37 p->mapbase = (unsigned int) ssb_port->regs;
38 p->membase = (void *) ssb_port->regs;
39 p->irq = ssb_port->irq + 2;
40 p->uartclk = ssb_port->baud_base;
41 p->regshift = ssb_port->reg_shift;
42 p->iotype = UPIO_MEM;
43 p->flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
44 }
45 return platform_device_register(&uart8250_device);
46}
47
48module_init(uart8250_init);
49
50MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>");
51MODULE_LICENSE("GPL");
52MODULE_DESCRIPTION("8250 UART probe driver for the BCM47XX platforms");
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
new file mode 100644
index 000000000000..dfc580aae958
--- /dev/null
+++ b/arch/mips/bcm47xx/setup.c
@@ -0,0 +1,79 @@
1/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
3 * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org>
4 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
5 * Copyright (C) 2006 Michael Buesch <mb@bu3sch.de>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28#include <linux/types.h>
29#include <linux/ssb/ssb.h>
30#include <asm/reboot.h>
31#include <asm/time.h>
32#include <bcm47xx.h>
33
34struct ssb_bus ssb_bcm47xx;
35EXPORT_SYMBOL(ssb_bcm47xx);
36
37static void bcm47xx_machine_restart(char *command)
38{
39 printk(KERN_ALERT "Please stand by while rebooting the system...\n");
40 local_irq_disable();
41 /* Set the watchdog timer to reset immediately */
42 ssb_chipco_watchdog_timer_set(&ssb_bcm47xx.chipco, 1);
43 while (1)
44 cpu_relax();
45}
46
47static void bcm47xx_machine_halt(void)
48{
49 /* Disable interrupts and watchdog and spin forever */
50 local_irq_disable();
51 ssb_chipco_watchdog_timer_set(&ssb_bcm47xx.chipco, 0);
52 while (1)
53 cpu_relax();
54}
55
56static int bcm47xx_get_invariants(struct ssb_bus *bus,
57 struct ssb_init_invariants *iv)
58{
59 /* TODO: fill ssb_init_invariants using boardtype/boardrev
60 * CFE environment variables.
61 */
62 return 0;
63}
64
65void __init plat_mem_setup(void)
66{
67 int err;
68
69 err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
70 bcm47xx_get_invariants);
71 if (err)
72 panic("Failed to initialize SSB bus (err %d)\n", err);
73
74 _machine_restart = bcm47xx_machine_restart;
75 _machine_halt = bcm47xx_machine_halt;
76 pm_power_off = bcm47xx_machine_halt;
77 board_time_init = bcm47xx_time_init;
78}
79
diff --git a/arch/mips/bcm47xx/time.c b/arch/mips/bcm47xx/time.c
new file mode 100644
index 000000000000..b27d07f29059
--- /dev/null
+++ b/arch/mips/bcm47xx/time.c
@@ -0,0 +1,56 @@
1/*
2 * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
10 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
12 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
13 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
14 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
15 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
16 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
17 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
18 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25
26#include <linux/init.h>
27#include <linux/ssb/ssb.h>
28#include <asm/time.h>
29#include <bcm47xx.h>
30
31void __init
32bcm47xx_time_init(void)
33{
34 unsigned long hz;
35
36 /*
37 * Use deterministic values for initial counter interrupt
38 * so that calibrate delay avoids encountering a counter wrap.
39 */
40 write_c0_count(0);
41 write_c0_compare(0xffff);
42
43 hz = ssb_cpu_clock(&ssb_bcm47xx.mipscore) / 2;
44 if (!hz)
45 hz = 100000000;
46
47 /* Set MIPS counter frequency for fixed_rate_gettimeoffset() */
48 mips_hpt_frequency = hz;
49}
50
51void __init
52plat_timer_setup(struct irqaction *irq)
53{
54 /* Enable the timer interrupt */
55 setup_irq(7, irq);
56}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-10 10:57:38 -0500