forked from Minki/linux
0a2fcaa70c
This struct contains information about the board, the chip is running on. The struct is filled for PCIe devices and SoCs. This information is used by b43 and will be used by brcmsmac soon. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Tested-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
238 lines
6.6 KiB
C
238 lines
6.6 KiB
C
/*
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* Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
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* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2006 Michael Buesch <m@bues.ch>
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* Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
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* Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/export.h>
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#include <linux/types.h>
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#include <linux/ssb/ssb.h>
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#include <linux/ssb/ssb_embedded.h>
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#include <linux/bcma/bcma_soc.h>
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#include <asm/bootinfo.h>
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#include <asm/reboot.h>
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#include <asm/time.h>
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#include <bcm47xx.h>
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#include <asm/mach-bcm47xx/nvram.h>
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union bcm47xx_bus bcm47xx_bus;
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EXPORT_SYMBOL(bcm47xx_bus);
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enum bcm47xx_bus_type bcm47xx_bus_type;
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EXPORT_SYMBOL(bcm47xx_bus_type);
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static void bcm47xx_machine_restart(char *command)
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{
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printk(KERN_ALERT "Please stand by while rebooting the system...\n");
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local_irq_disable();
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/* Set the watchdog timer to reset immediately */
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switch (bcm47xx_bus_type) {
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#ifdef CONFIG_BCM47XX_SSB
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case BCM47XX_BUS_TYPE_SSB:
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ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
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break;
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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
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break;
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#endif
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}
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while (1)
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cpu_relax();
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}
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static void bcm47xx_machine_halt(void)
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{
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/* Disable interrupts and watchdog and spin forever */
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local_irq_disable();
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switch (bcm47xx_bus_type) {
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#ifdef CONFIG_BCM47XX_SSB
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case BCM47XX_BUS_TYPE_SSB:
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ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
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break;
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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
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break;
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#endif
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}
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while (1)
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cpu_relax();
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}
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#ifdef CONFIG_BCM47XX_SSB
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static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
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{
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char prefix[10];
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if (bus->bustype == SSB_BUSTYPE_PCI) {
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snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
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bus->host_pci->bus->number + 1,
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PCI_SLOT(bus->host_pci->devfn));
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bcm47xx_fill_sprom(out, prefix);
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return 0;
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} else {
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printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
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return -EINVAL;
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}
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}
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static int bcm47xx_get_invariants(struct ssb_bus *bus,
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struct ssb_init_invariants *iv)
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{
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char buf[20];
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/* Fill boardinfo structure */
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memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
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bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);
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bcm47xx_fill_sprom(&iv->sprom, NULL);
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if (nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
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iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
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return 0;
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}
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static void __init bcm47xx_register_ssb(void)
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{
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int err;
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char buf[100];
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struct ssb_mipscore *mcore;
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err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
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if (err)
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printk(KERN_WARNING "bcm47xx: someone else already registered"
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" a ssb SPROM callback handler (err %d)\n", err);
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err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
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bcm47xx_get_invariants);
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if (err)
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panic("Failed to initialize SSB bus (err %d)", err);
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mcore = &bcm47xx_bus.ssb.mipscore;
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if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
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if (strstr(buf, "console=ttyS1")) {
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struct ssb_serial_port port;
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printk(KERN_DEBUG "Swapping serial ports!\n");
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/* swap serial ports */
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memcpy(&port, &mcore->serial_ports[0], sizeof(port));
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memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
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sizeof(port));
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memcpy(&mcore->serial_ports[1], &port, sizeof(port));
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}
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}
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}
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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
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{
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char prefix[10];
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struct bcma_device *core;
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switch (bus->hosttype) {
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case BCMA_HOSTTYPE_PCI:
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snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
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bus->host_pci->bus->number + 1,
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PCI_SLOT(bus->host_pci->devfn));
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bcm47xx_fill_sprom(out, prefix);
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return 0;
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case BCMA_HOSTTYPE_SOC:
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bcm47xx_fill_sprom_ethernet(out, NULL);
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core = bcma_find_core(bus, BCMA_CORE_80211);
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if (core) {
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snprintf(prefix, sizeof(prefix), "sb/%u/",
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core->core_index);
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bcm47xx_fill_sprom(out, prefix);
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}
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return 0;
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default:
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pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
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return -EINVAL;
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}
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}
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static void __init bcm47xx_register_bcma(void)
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{
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int err;
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err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
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if (err)
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pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
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err = bcma_host_soc_register(&bcm47xx_bus.bcma);
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if (err)
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panic("Failed to initialize BCMA bus (err %d)", err);
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bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
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}
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#endif
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void __init plat_mem_setup(void)
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{
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struct cpuinfo_mips *c = ¤t_cpu_data;
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if (c->cputype == CPU_74K) {
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printk(KERN_INFO "bcm47xx: using bcma bus\n");
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#ifdef CONFIG_BCM47XX_BCMA
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bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
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bcm47xx_register_bcma();
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#endif
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} else {
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printk(KERN_INFO "bcm47xx: using ssb bus\n");
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#ifdef CONFIG_BCM47XX_SSB
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bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
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bcm47xx_register_ssb();
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#endif
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}
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_machine_restart = bcm47xx_machine_restart;
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_machine_halt = bcm47xx_machine_halt;
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pm_power_off = bcm47xx_machine_halt;
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}
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static int __init bcm47xx_register_bus_complete(void)
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{
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switch (bcm47xx_bus_type) {
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#ifdef CONFIG_BCM47XX_SSB
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case BCM47XX_BUS_TYPE_SSB:
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/* Nothing to do */
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break;
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#endif
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#ifdef CONFIG_BCM47XX_BCMA
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case BCM47XX_BUS_TYPE_BCMA:
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bcma_bus_register(&bcm47xx_bus.bcma.bus);
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break;
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#endif
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}
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return 0;
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}
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device_initcall(bcm47xx_register_bus_complete);
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