arch/mips/bcm47xx/setup.c - kernel/lockdown - Git at Google

 /*
  *  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) 2010-2012 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 "bcm47xx_private.h"

 #include <linux/export.h>
 #include <linux/types.h>
 #include <linux/ethtool.h>
 #include <linux/phy.h>
 #include <linux/phy_fixed.h>
 #include <linux/ssb/ssb.h>
 #include <linux/ssb/ssb_embedded.h>
 #include <linux/bcma/bcma_soc.h>
 #include <asm/bootinfo.h>
 #include <asm/idle.h>
 #include <asm/prom.h>
 #include <asm/reboot.h>
 #include <asm/time.h>
 #include <bcm47xx.h>
 #include <bcm47xx_nvram.h>
 #include <bcm47xx_board.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_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
 {
 	char prefix[10];

 	if (bus->bustype == SSB_BUSTYPE_PCI) {
 		memset(out, 0, sizeof(struct ssb_sprom));
 		snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 			 bus->host_pci->bus->number + 1,
 			 PCI_SLOT(bus->host_pci->devfn));
 		bcm47xx_fill_sprom(out, prefix, false);
 		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));

 	bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);

 	memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
 	bcm47xx_fill_sprom(&iv->sprom, NULL, false);

 	if (bcm47xx_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_ssb);
 	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 (bcm47xx_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 int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
 {
 	char prefix[10];
 	struct bcma_device *core;

 	switch (bus->hosttype) {
 	case BCMA_HOSTTYPE_PCI:
 		memset(out, 0, sizeof(struct ssb_sprom));
 		snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 			 bus->host_pci->bus->number + 1,
 			 PCI_SLOT(bus->host_pci->devfn));
 		bcm47xx_fill_sprom(out, prefix, false);
 		return 0;
 	case BCMA_HOSTTYPE_SOC:
 		memset(out, 0, sizeof(struct ssb_sprom));
 		core = bcma_find_core(bus, BCMA_CORE_80211);
 		if (core) {
 			snprintf(prefix, sizeof(prefix), "sb/%u/",
 				 core->core_index);
 			bcm47xx_fill_sprom(out, prefix, true);
 		} else {
 			bcm47xx_fill_sprom(out, NULL, false);
 		}
 		return 0;
 	default:
 		pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
 		return -EINVAL;
 	}
 }

 static void __init bcm47xx_register_bcma(void)
 {
 	int err;

 	err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
 	if (err)
 		pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);

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

 	bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
 }
 #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();
 		bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
 #endif
 	} else {
 		printk(KERN_INFO "bcm47xx: using ssb bus\n");
 #ifdef CONFIG_BCM47XX_SSB
 		bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
 		bcm47xx_register_ssb();
 		bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id);
 #endif
 	}

 	_machine_restart = bcm47xx_machine_restart;
 	_machine_halt = bcm47xx_machine_halt;
 	pm_power_off = bcm47xx_machine_halt;
 	bcm47xx_board_detect();
 	mips_set_machine_name(bcm47xx_board_get_name());
 }

 static int __init bcm47xx_cpu_fixes(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:
 		/* The BCM4706 has a problem with the CPU wait instruction.
 		 * When r4k_wait or r4k_wait_irqoff is used will just hang and
 		 * not return from a msleep(). Removing the cpu_wait
 		 * functionality is a workaround for this problem. The BCM4716
 		 * does not have this problem.
 		 */
 		if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
 			cpu_wait = NULL;
 		break;
 #endif
 	}
 	return 0;
 }
 arch_initcall(bcm47xx_cpu_fixes);

 static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = {
 	.link	= 1,
 	.speed	= SPEED_100,
 	.duplex	= DUPLEX_FULL,
 };

 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
 	}
 	bcm47xx_buttons_register();
 	bcm47xx_leds_register();

 	fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
 	return 0;
 }
 device_initcall(bcm47xx_register_bus_complete);
	/*
	* 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) 2010-2012 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 "bcm47xx_private.h"

	#include <linux/export.h>
	#include <linux/types.h>
	#include <linux/ethtool.h>
	#include <linux/phy.h>
	#include <linux/phy_fixed.h>
	#include <linux/ssb/ssb.h>
	#include <linux/ssb/ssb_embedded.h>
	#include <linux/bcma/bcma_soc.h>
	#include <asm/bootinfo.h>
	#include <asm/idle.h>
	#include <asm/prom.h>
	#include <asm/reboot.h>
	#include <asm/time.h>
	#include <bcm47xx.h>
	#include <bcm47xx_nvram.h>
	#include <bcm47xx_board.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_ssb(struct ssb_bus bus, struct ssb_sprom out)
	{
	char prefix[10];

	if (bus->bustype == SSB_BUSTYPE_PCI) {
	memset(out, 0, sizeof(struct ssb_sprom));
	snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
	bus->host_pci->bus->number + 1,
	PCI_SLOT(bus->host_pci->devfn));
	bcm47xx_fill_sprom(out, prefix, false);
	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));

	bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);

	memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
	bcm47xx_fill_sprom(&iv->sprom, NULL, false);

	if (bcm47xx_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_ssb);
	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 (bcm47xx_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 int bcm47xx_get_sprom_bcma(struct bcma_bus bus, struct ssb_sprom out)
	{
	char prefix[10];
	struct bcma_device *core;

	switch (bus->hosttype) {
	case BCMA_HOSTTYPE_PCI:
	memset(out, 0, sizeof(struct ssb_sprom));
	snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
	bus->host_pci->bus->number + 1,
	PCI_SLOT(bus->host_pci->devfn));
	bcm47xx_fill_sprom(out, prefix, false);
	return 0;
	case BCMA_HOSTTYPE_SOC:
	memset(out, 0, sizeof(struct ssb_sprom));
	core = bcma_find_core(bus, BCMA_CORE_80211);
	if (core) {
	snprintf(prefix, sizeof(prefix), "sb/%u/",
	core->core_index);
	bcm47xx_fill_sprom(out, prefix, true);
	} else {
	bcm47xx_fill_sprom(out, NULL, false);
	}
	return 0;
	default:
	pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
	return -EINVAL;
	}
	}

	static void __init bcm47xx_register_bcma(void)
	{
	int err;

	err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
	if (err)
	pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);

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

	bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
	}
	#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();
	bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
	#endif
	} else {
	printk(KERN_INFO "bcm47xx: using ssb bus\n");
	#ifdef CONFIG_BCM47XX_SSB
	bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
	bcm47xx_register_ssb();
	bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id);
	#endif
	}

	_machine_restart = bcm47xx_machine_restart;
	_machine_halt = bcm47xx_machine_halt;
	pm_power_off = bcm47xx_machine_halt;
	bcm47xx_board_detect();
	mips_set_machine_name(bcm47xx_board_get_name());
	}

	static int __init bcm47xx_cpu_fixes(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:
	/* The BCM4706 has a problem with the CPU wait instruction.
	* When r4k_wait or r4k_wait_irqoff is used will just hang and
	* not return from a msleep(). Removing the cpu_wait
	* functionality is a workaround for this problem. The BCM4716
	* does not have this problem.
	*/
	if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
	cpu_wait = NULL;
	break;
	#endif
	}
	return 0;
	}
	arch_initcall(bcm47xx_cpu_fixes);

	static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = {
	.link = 1,
	.speed = SPEED_100,
	.duplex = DUPLEX_FULL,
	};

	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
	}
	bcm47xx_buttons_register();
	bcm47xx_leds_register();

	fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
	return 0;
	}
	device_initcall(bcm47xx_register_bus_complete);