Initial import

1 files changed, 272 insertions, 0 deletions

diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
new file mode 100644
index 000000000..82ff9fd2a
--- /dev/null
+++ b/arch/mips/bcm47xx/setup.c
@@ -0,0 +1,272 @@
+/*
+ *  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_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)
+{
+	pr_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:
+		if (bcm47xx_bus.ssb.chip_id == 0x4785)
+			write_c0_diag4(1 << 22);
+		ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
+		if (bcm47xx_bus.ssb.chip_id == 0x4785) {
+			__asm__ __volatile__(
+				".set\tmips3\n\t"
+				"sync\n\t"
+				"wait\n\t"
+				".set\tmips0");
+		}
+		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_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_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;
+
+			pr_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 register BCMA bus (err %d)", err);
+}
+#endif
+
+/*
+ * Memory setup is done in the early part of MIPS's arch_mem_init. It's supposed
+ * to detect memory and record it with add_memory_region.
+ * Any extra initializaion performed here must not use kmalloc or bootmem.
+ */
+void __init plat_mem_setup(void)
+{
+	struct cpuinfo_mips *c = &current_cpu_data;
+
+	if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K)) {
+		pr_info("Using bcma bus\n");
+#ifdef CONFIG_BCM47XX_BCMA
+		bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
+		bcm47xx_sprom_register_fallbacks();
+		bcm47xx_register_bcma();
+		bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id);
+#ifdef CONFIG_HIGHMEM
+		bcm47xx_prom_highmem_init();
+#endif
+#endif
+	} else {
+		pr_info("Using ssb bus\n");
+#ifdef CONFIG_BCM47XX_SSB
+		bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
+		bcm47xx_sprom_register_fallbacks();
+		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;
+}
+
+/*
+ * This finishes bus initialization doing things that were not possible without
+ * kmalloc. Make sure to call it late enough (after mm_init).
+ */
+void __init bcm47xx_bus_setup(void)
+{
+#ifdef CONFIG_BCM47XX_BCMA
+	if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
+		int err;
+
+		err = bcma_host_soc_init(&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
+
+	/* With bus initialized we can access NVRAM and detect the board */
+	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();
+	bcm47xx_workarounds();
+
+	fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
+	return 0;
+}
+device_initcall(bcm47xx_register_bus_complete);