mirror of https://gitee.com/openkylin/linux.git
242 lines
6.8 KiB
C
242 lines
6.8 KiB
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) 2010-2012 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 <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_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);
|
|
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);
|
|
|
|
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_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 (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);
|
|
return 0;
|
|
case BCMA_HOSTTYPE_SOC:
|
|
memset(out, 0, sizeof(struct ssb_sprom));
|
|
bcm47xx_fill_sprom_ethernet(out, NULL);
|
|
core = bcma_find_core(bus, BCMA_CORE_80211);
|
|
if (core) {
|
|
snprintf(prefix, sizeof(prefix), "sb/%u/",
|
|
core->core_index);
|
|
bcm47xx_fill_sprom(out, prefix);
|
|
}
|
|
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 = ¤t_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);
|