forked from Minki/linux
c1d1c5d421
This patch add support for the bcma bus. Broadcom uses only Mips 74K CPUs on the new SoC and on the old ons using ssb bus there are no Mips 74K CPUs. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
360 lines
12 KiB
C
360 lines
12 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) 2010-2011 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/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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#define READ_FROM_NVRAM(_outvar, name, buf) \
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if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
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sprom->_outvar = simple_strtoul(buf, NULL, 0);
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#define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \
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if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \
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nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\
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sprom->_outvar = simple_strtoul(buf, NULL, 0);
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static inline int nvram_getprefix(const char *prefix, char *name,
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char *buf, int len)
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{
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if (prefix) {
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char key[100];
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snprintf(key, sizeof(key), "%s%s", prefix, name);
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return nvram_getenv(key, buf, len);
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}
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return nvram_getenv(name, buf, len);
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}
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static u32 nvram_getu32(const char *name, char *buf, int len)
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{
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int rv;
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char key[100];
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u16 var0, var1;
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snprintf(key, sizeof(key), "%s0", name);
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rv = nvram_getenv(key, buf, len);
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/* return 0 here so this looks like unset */
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if (rv < 0)
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return 0;
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var0 = simple_strtoul(buf, NULL, 0);
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snprintf(key, sizeof(key), "%s1", name);
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rv = nvram_getenv(key, buf, len);
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if (rv < 0)
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return 0;
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var1 = simple_strtoul(buf, NULL, 0);
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return var1 << 16 | var0;
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}
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static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
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{
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char buf[100];
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u32 boardflags;
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memset(sprom, 0, sizeof(struct ssb_sprom));
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sprom->revision = 1; /* Fallback: Old hardware does not define this. */
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READ_FROM_NVRAM(revision, "sromrev", buf);
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if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 ||
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nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0)
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nvram_parse_macaddr(buf, sprom->il0mac);
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if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0)
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nvram_parse_macaddr(buf, sprom->et0mac);
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if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0)
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nvram_parse_macaddr(buf, sprom->et1mac);
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READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
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READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
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READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
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READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
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READ_FROM_NVRAM(board_rev, "boardrev", buf);
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READ_FROM_NVRAM(country_code, "ccode", buf);
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READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
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READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
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READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
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READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
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READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
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READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
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READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
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READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
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READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
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READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
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READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
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READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
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READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
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READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
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READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf);
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READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf);
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READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf);
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READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf);
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READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf);
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READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf);
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READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf);
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READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf);
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READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf);
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READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf);
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READ_FROM_NVRAM(tri2g, "tri2g", buf);
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READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
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READ_FROM_NVRAM(tri5g, "tri5g", buf);
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READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
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READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf);
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READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf);
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READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf);
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READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf);
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READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf);
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READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf);
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READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf);
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READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf);
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READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf);
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READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf);
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READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf);
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READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf);
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READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf);
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READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf);
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READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf);
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READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf);
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READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
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READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
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READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
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READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
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READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
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READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
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READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
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READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
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READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
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READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
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READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
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sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf));
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sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf));
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sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf));
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sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf));
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READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf);
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READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf);
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READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf);
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READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf);
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memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24,
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sizeof(sprom->antenna_gain.ghz5));
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if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) {
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boardflags = simple_strtoul(buf, NULL, 0);
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if (boardflags) {
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sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
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sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
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}
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}
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if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) {
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boardflags = simple_strtoul(buf, NULL, 0);
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if (boardflags) {
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sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
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sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
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}
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}
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}
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int bcm47xx_get_sprom(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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if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
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iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
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else
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iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
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if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
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iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
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if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
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iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
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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);
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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)\n", 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 void __init bcm47xx_register_bcma(void)
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{
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int 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)\n", err);
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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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