[deliverable/linux.git] / arch / mips / bcm47xx / setup.c

/*
 *  Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
 *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
 *  Copyright (C) 2006 Michael Buesch <m@bues.ch>
 *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
 *  Copyright (C) 2010-2011 Hauke Mehrtens <hauke@hauke-m.de>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/export.h>
#include <linux/types.h>
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_embedded.h>
#include <linux/bcma/bcma_soc.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <bcm47xx.h>
#include <asm/mach-bcm47xx/nvram.h>

union bcm47xx_bus bcm47xx_bus;
EXPORT_SYMBOL(bcm47xx_bus);

enum bcm47xx_bus_type bcm47xx_bus_type;
EXPORT_SYMBOL(bcm47xx_bus_type);

static void bcm47xx_machine_restart(char *command)
{
	printk(KERN_ALERT "Please stand by while rebooting the system...\n");
	local_irq_disable();
	/* Set the watchdog timer to reset immediately */
	switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
	case BCM47XX_BUS_TYPE_SSB:
		ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
		break;
#endif
#ifdef CONFIG_BCM47XX_BCMA
	case BCM47XX_BUS_TYPE_BCMA:
		bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
		break;
#endif
	}
	while (1)
		cpu_relax();
}

static void bcm47xx_machine_halt(void)
{
	/* Disable interrupts and watchdog and spin forever */
	local_irq_disable();
	switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
	case BCM47XX_BUS_TYPE_SSB:
		ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
		break;
#endif
#ifdef CONFIG_BCM47XX_BCMA
	case BCM47XX_BUS_TYPE_BCMA:
		bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
		break;
#endif
	}
	while (1)
		cpu_relax();
}

#ifdef CONFIG_BCM47XX_SSB
static int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
{
	char prefix[10];

	if (bus->bustype == SSB_BUSTYPE_PCI) {
		snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
			 bus->host_pci->bus->number + 1,
			 PCI_SLOT(bus->host_pci->devfn));
		bcm47xx_fill_sprom(out, prefix);
		return 0;
	} else {
		printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
		return -EINVAL;
	}
}

static int bcm47xx_get_invariants(struct ssb_bus *bus,
				   struct ssb_init_invariants *iv)
{
	char buf[20];

	/* Fill boardinfo structure */
	memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));

	if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
		iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
	else
		iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
	if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
		iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
	if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
		iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);

	bcm47xx_fill_sprom(&iv->sprom, NULL);

	if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
		iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);

	return 0;
}

static void __init bcm47xx_register_ssb(void)
{
	int err;
	char buf[100];
	struct ssb_mipscore *mcore;

	err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
	if (err)
		printk(KERN_WARNING "bcm47xx: someone else already registered"
			" a ssb SPROM callback handler (err %d)\n", err);

	err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
				      bcm47xx_get_invariants);
	if (err)
		panic("Failed to initialize SSB bus (err %d)", err);

	mcore = &bcm47xx_bus.ssb.mipscore;
	if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
		if (strstr(buf, "console=ttyS1")) {
			struct ssb_serial_port port;

			printk(KERN_DEBUG "Swapping serial ports!\n");
			/* swap serial ports */
			memcpy(&port, &mcore->serial_ports[0], sizeof(port));
			memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
			       sizeof(port));
			memcpy(&mcore->serial_ports[1], &port, sizeof(port));
		}
	}
}
#endif

#ifdef CONFIG_BCM47XX_BCMA
static void __init bcm47xx_register_bcma(void)
{
	int err;

	err = bcma_host_soc_register(&bcm47xx_bus.bcma);
	if (err)
		panic("Failed to initialize BCMA bus (err %d)", err);
}
#endif

void __init plat_mem_setup(void)
{
	struct cpuinfo_mips *c = &current_cpu_data;

	if (c->cputype == CPU_74K) {
		printk(KERN_INFO "bcm47xx: using bcma bus\n");
#ifdef CONFIG_BCM47XX_BCMA
		bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
		bcm47xx_register_bcma();
#endif
	} else {
		printk(KERN_INFO "bcm47xx: using ssb bus\n");
#ifdef CONFIG_BCM47XX_SSB
		bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
		bcm47xx_register_ssb();
#endif
	}

	_machine_restart = bcm47xx_machine_restart;
	_machine_halt = bcm47xx_machine_halt;
	pm_power_off = bcm47xx_machine_halt;
}

static int __init bcm47xx_register_bus_complete(void)
{
	switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
	case BCM47XX_BUS_TYPE_SSB:
		/* Nothing to do */
		break;
#endif
#ifdef CONFIG_BCM47XX_BCMA
	case BCM47XX_BUS_TYPE_BCMA:
		bcma_bus_register(&bcm47xx_bus.bcma.bus);
		break;
#endif
	}
	return 0;
}
device_initcall(bcm47xx_register_bus_complete);
Commit	Line	Data
1c0c13eb AJ	1	/*
1c0c13eb AJ	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>
fe6f3642	6	* Copyright (C) 2010-2011 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>
1c0c13eb AJ	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>
121915c4	38	#include <asm/mach-bcm47xx/nvram.h>
1c0c13eb	39
08ccf572 HM	40	union bcm47xx_bus bcm47xx_bus;
	41	EXPORT_SYMBOL(bcm47xx_bus);
	42
	43	enum bcm47xx_bus_type bcm47xx_bus_type;
	44	EXPORT_SYMBOL(bcm47xx_bus_type);
1c0c13eb AJ	45
	46	static void bcm47xx_machine_restart(char *command)
	47	{
	48	printk(KERN_ALERT "Please stand by while rebooting the system...\n");
	49	local_irq_disable();
	50	/* Set the watchdog timer to reset immediately */
08ccf572	51	switch (bcm47xx_bus_type) {
a656ffcb	52	#ifdef CONFIG_BCM47XX_SSB
08ccf572 HM	53	case BCM47XX_BUS_TYPE_SSB:
	54	ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
	55	break;
c1d1c5d4 HM	56	#endif
	57	#ifdef CONFIG_BCM47XX_BCMA
	58	case BCM47XX_BUS_TYPE_BCMA:
	59	bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
	60	break;
a656ffcb	61	#endif
08ccf572	62	}
1c0c13eb AJ	63	while (1)
	64	cpu_relax();
	65	}
	66
	67	static void bcm47xx_machine_halt(void)
	68	{
	69	/* Disable interrupts and watchdog and spin forever */
	70	local_irq_disable();
08ccf572	71	switch (bcm47xx_bus_type) {
a656ffcb	72	#ifdef CONFIG_BCM47XX_SSB
08ccf572 HM	73	case BCM47XX_BUS_TYPE_SSB:
	74	ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
	75	break;
c1d1c5d4 HM	76	#endif
	77	#ifdef CONFIG_BCM47XX_BCMA
	78	case BCM47XX_BUS_TYPE_BCMA:
	79	bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
	80	break;
a656ffcb	81	#endif
08ccf572	82	}
1c0c13eb AJ	83	while (1)
	84	cpu_relax();
	85	}
	86
a656ffcb	87	#ifdef CONFIG_BCM47XX_SSB
019eee2e	88	static int bcm47xx_get_sprom(struct ssb_bus bus, struct ssb_sprom out)
fe6f3642 HM	89	{
	90	char prefix[10];
	91
	92	if (bus->bustype == SSB_BUSTYPE_PCI) {
	93	snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
	94	bus->host_pci->bus->number + 1,
	95	PCI_SLOT(bus->host_pci->devfn));
	96	bcm47xx_fill_sprom(out, prefix);
	97	return 0;
	98	} else {
	99	printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
	100	return -EINVAL;
	101	}
	102	}
	103
1c0c13eb AJ	104	static int bcm47xx_get_invariants(struct ssb_bus *bus,
	105	struct ssb_init_invariants *iv)
	106	{
2aa088d6	107	char buf[20];
25e5fb97 AJ	108
	109	/* Fill boardinfo structure */
	110	memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
	111
82571084	112	if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
2aa088d6 HM	113	iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
	114	else
	115	iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
82571084	116	if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
25e5fb97	117	iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
82571084	118	if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
25e5fb97 AJ	119	iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
25e5fb97 AJ	120
a7c62f85	121	bcm47xx_fill_sprom(&iv->sprom, NULL);
121915c4	122
2aa088d6 HM	123	if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
2aa088d6 HM	124	iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
25e5fb97	125
1c0c13eb AJ	126	return 0;
	127	}
	128
08ccf572	129	static void __init bcm47xx_register_ssb(void)
1c0c13eb AJ	130	{
1c0c13eb AJ	131	int err;
1690a7f9 HM	132	char buf[100];
1690a7f9 HM	133	struct ssb_mipscore *mcore;
1c0c13eb	134
fe6f3642 HM	135	err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
	136	if (err)
	137	printk(KERN_WARNING "bcm47xx: someone else already registered"
	138	" a ssb SPROM callback handler (err %d)\n", err);
	139
08ccf572	140	err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
1c0c13eb AJ	141	bcm47xx_get_invariants);
1c0c13eb AJ	142	if (err)
ab75dc02	143	panic("Failed to initialize SSB bus (err %d)", err);
1c0c13eb	144
08ccf572	145	mcore = &bcm47xx_bus.ssb.mipscore;
1690a7f9 HM	146	if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
	147	if (strstr(buf, "console=ttyS1")) {
	148	struct ssb_serial_port port;
	149
	150	printk(KERN_DEBUG "Swapping serial ports!\n");
	151	/* swap serial ports */
	152	memcpy(&port, &mcore->serial_ports[0], sizeof(port));
	153	memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
	154	sizeof(port));
	155	memcpy(&mcore->serial_ports[1], &port, sizeof(port));
	156	}
	157	}
08ccf572	158	}
a656ffcb	159	#endif
08ccf572	160
c1d1c5d4 HM	161	#ifdef CONFIG_BCM47XX_BCMA
	162	static void __init bcm47xx_register_bcma(void)
	163	{
	164	int err;
	165
	166	err = bcma_host_soc_register(&bcm47xx_bus.bcma);
	167	if (err)
ab75dc02	168	panic("Failed to initialize BCMA bus (err %d)", err);
c1d1c5d4 HM	169	}
	170	#endif
	171
08ccf572 HM	172	void __init plat_mem_setup(void)
	173	{
	174	struct cpuinfo_mips *c = &current_cpu_data;
	175
c1d1c5d4 HM	176	if (c->cputype == CPU_74K) {
	177	printk(KERN_INFO "bcm47xx: using bcma bus\n");
	178	#ifdef CONFIG_BCM47XX_BCMA
	179	bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
	180	bcm47xx_register_bcma();
	181	#endif
	182	} else {
	183	printk(KERN_INFO "bcm47xx: using ssb bus\n");
a656ffcb	184	#ifdef CONFIG_BCM47XX_SSB
c1d1c5d4 HM	185	bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
c1d1c5d4 HM	186	bcm47xx_register_ssb();
a656ffcb	187	#endif
c1d1c5d4	188	}
1690a7f9	189
1c0c13eb AJ	190	_machine_restart = bcm47xx_machine_restart;
	191	_machine_halt = bcm47xx_machine_halt;
	192	pm_power_off = bcm47xx_machine_halt;
1c0c13eb	193	}
c1d1c5d4 HM	194
	195	static int __init bcm47xx_register_bus_complete(void)
	196	{
	197	switch (bcm47xx_bus_type) {
	198	#ifdef CONFIG_BCM47XX_SSB
	199	case BCM47XX_BUS_TYPE_SSB:
	200	/* Nothing to do */
	201	break;
	202	#endif
	203	#ifdef CONFIG_BCM47XX_BCMA
	204	case BCM47XX_BUS_TYPE_BCMA:
	205	bcma_bus_register(&bcm47xx_bus.bcma.bus);
	206	break;
	207	#endif
	208	}
	209	return 0;
	210	}
	211	device_initcall(bcm47xx_register_bus_complete);