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linux/arch/mips/bcm47xx/setup.c
Hauke Mehrtens 41790fd51f MIPS: BCM47xx: Extend the filling of SPROM from NVRAM 
Some members of the struct ssb_sprom where not filled with data available
in the NVRAM. Some attribute names in the NVRAM changed from SPROM version
3 to version 4. This patch was done by analyzing the the pci sprom parser
in the ssb code and some open source parts of the braodcom wireless driver
used on embedded devices.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2365/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-05-19 09:55:47 +01:00

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/*
* Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2006 Michael Buesch <mb@bu3sch.de>
* Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
* Copyright (C) 2010-2011 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/types.h>
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_embedded.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <bcm47xx.h>
#include <asm/mach-bcm47xx/nvram.h>
struct ssb_bus ssb_bcm47xx;
EXPORT_SYMBOL(ssb_bcm47xx);
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 */
ssb_watchdog_timer_set(&ssb_bcm47xx, 1);
while (1)
cpu_relax();
}
static void bcm47xx_machine_halt(void)
{
/* Disable interrupts and watchdog and spin forever */
local_irq_disable();
ssb_watchdog_timer_set(&ssb_bcm47xx, 0);
while (1)
cpu_relax();
}
#define READ_FROM_NVRAM(_outvar, name, buf) \
if (nvram_getprefix(prefix, name, buf, sizeof(buf)) >= 0)\
sprom->_outvar = simple_strtoul(buf, NULL, 0);
#define READ_FROM_NVRAM2(_outvar, name1, name2, buf) \
if (nvram_getprefix(prefix, name1, buf, sizeof(buf)) >= 0 || \
nvram_getprefix(prefix, name2, buf, sizeof(buf)) >= 0)\
sprom->_outvar = simple_strtoul(buf, NULL, 0);
static inline int nvram_getprefix(const char *prefix, char *name,
char *buf, int len)
{
if (prefix) {
char key[100];
snprintf(key, sizeof(key), "%s%s", prefix, name);
return nvram_getenv(key, buf, len);
}
return nvram_getenv(name, buf, len);
}
static u32 nvram_getu32(const char *name, char *buf, int len)
{
int rv;
char key[100];
u16 var0, var1;
snprintf(key, sizeof(key), "%s0", name);
rv = nvram_getenv(key, buf, len);
/* return 0 here so this looks like unset */
if (rv < 0)
return 0;
var0 = simple_strtoul(buf, NULL, 0);
snprintf(key, sizeof(key), "%s1", name);
rv = nvram_getenv(key, buf, len);
if (rv < 0)
return 0;
var1 = simple_strtoul(buf, NULL, 0);
return var1 << 16 | var0;
}
static void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix)
{
char buf[100];
u32 boardflags;
memset(sprom, 0, sizeof(struct ssb_sprom));
sprom->revision = 1; /* Fallback: Old hardware does not define this. */
READ_FROM_NVRAM(revision, "sromrev", buf);
if (nvram_getprefix(prefix, "il0macaddr", buf, sizeof(buf)) >= 0 ||
nvram_getprefix(prefix, "macaddr", buf, sizeof(buf)) >= 0)
nvram_parse_macaddr(buf, sprom->il0mac);
if (nvram_getprefix(prefix, "et0macaddr", buf, sizeof(buf)) >= 0)
nvram_parse_macaddr(buf, sprom->et0mac);
if (nvram_getprefix(prefix, "et1macaddr", buf, sizeof(buf)) >= 0)
nvram_parse_macaddr(buf, sprom->et1mac);
READ_FROM_NVRAM(et0phyaddr, "et0phyaddr", buf);
READ_FROM_NVRAM(et1phyaddr, "et1phyaddr", buf);
READ_FROM_NVRAM(et0mdcport, "et0mdcport", buf);
READ_FROM_NVRAM(et1mdcport, "et1mdcport", buf);
READ_FROM_NVRAM(board_rev, "boardrev", buf);
READ_FROM_NVRAM(country_code, "ccode", buf);
READ_FROM_NVRAM(ant_available_a, "aa5g", buf);
READ_FROM_NVRAM(ant_available_bg, "aa2g", buf);
READ_FROM_NVRAM(pa0b0, "pa0b0", buf);
READ_FROM_NVRAM(pa0b1, "pa0b1", buf);
READ_FROM_NVRAM(pa0b2, "pa0b2", buf);
READ_FROM_NVRAM(pa1b0, "pa1b0", buf);
READ_FROM_NVRAM(pa1b1, "pa1b1", buf);
READ_FROM_NVRAM(pa1b2, "pa1b2", buf);
READ_FROM_NVRAM(pa1lob0, "pa1lob0", buf);
READ_FROM_NVRAM(pa1lob2, "pa1lob1", buf);
READ_FROM_NVRAM(pa1lob1, "pa1lob2", buf);
READ_FROM_NVRAM(pa1hib0, "pa1hib0", buf);
READ_FROM_NVRAM(pa1hib2, "pa1hib1", buf);
READ_FROM_NVRAM(pa1hib1, "pa1hib2", buf);
READ_FROM_NVRAM2(gpio0, "ledbh0", "wl0gpio0", buf);
READ_FROM_NVRAM2(gpio1, "ledbh1", "wl0gpio1", buf);
READ_FROM_NVRAM2(gpio2, "ledbh2", "wl0gpio2", buf);
READ_FROM_NVRAM2(gpio3, "ledbh3", "wl0gpio3", buf);
READ_FROM_NVRAM2(maxpwr_bg, "maxp2ga0", "pa0maxpwr", buf);
READ_FROM_NVRAM2(maxpwr_al, "maxp5gla0", "pa1lomaxpwr", buf);
READ_FROM_NVRAM2(maxpwr_a, "maxp5ga0", "pa1maxpwr", buf);
READ_FROM_NVRAM2(maxpwr_ah, "maxp5gha0", "pa1himaxpwr", buf);
READ_FROM_NVRAM2(itssi_bg, "itt5ga0", "pa0itssit", buf);
READ_FROM_NVRAM2(itssi_a, "itt2ga0", "pa1itssit", buf);
READ_FROM_NVRAM(tri2g, "tri2g", buf);
READ_FROM_NVRAM(tri5gl, "tri5gl", buf);
READ_FROM_NVRAM(tri5g, "tri5g", buf);
READ_FROM_NVRAM(tri5gh, "tri5gh", buf);
READ_FROM_NVRAM(txpid2g[0], "txpid2ga0", buf);
READ_FROM_NVRAM(txpid2g[1], "txpid2ga1", buf);
READ_FROM_NVRAM(txpid2g[2], "txpid2ga2", buf);
READ_FROM_NVRAM(txpid2g[3], "txpid2ga3", buf);
READ_FROM_NVRAM(txpid5g[0], "txpid5ga0", buf);
READ_FROM_NVRAM(txpid5g[1], "txpid5ga1", buf);
READ_FROM_NVRAM(txpid5g[2], "txpid5ga2", buf);
READ_FROM_NVRAM(txpid5g[3], "txpid5ga3", buf);
READ_FROM_NVRAM(txpid5gl[0], "txpid5gla0", buf);
READ_FROM_NVRAM(txpid5gl[1], "txpid5gla1", buf);
READ_FROM_NVRAM(txpid5gl[2], "txpid5gla2", buf);
READ_FROM_NVRAM(txpid5gl[3], "txpid5gla3", buf);
READ_FROM_NVRAM(txpid5gh[0], "txpid5gha0", buf);
READ_FROM_NVRAM(txpid5gh[1], "txpid5gha1", buf);
READ_FROM_NVRAM(txpid5gh[2], "txpid5gha2", buf);
READ_FROM_NVRAM(txpid5gh[3], "txpid5gha3", buf);
READ_FROM_NVRAM(rxpo2g, "rxpo2g", buf);
READ_FROM_NVRAM(rxpo5g, "rxpo5g", buf);
READ_FROM_NVRAM(rssisav2g, "rssisav2g", buf);
READ_FROM_NVRAM(rssismc2g, "rssismc2g", buf);
READ_FROM_NVRAM(rssismf2g, "rssismf2g", buf);
READ_FROM_NVRAM(bxa2g, "bxa2g", buf);
READ_FROM_NVRAM(rssisav5g, "rssisav5g", buf);
READ_FROM_NVRAM(rssismc5g, "rssismc5g", buf);
READ_FROM_NVRAM(rssismf5g, "rssismf5g", buf);
READ_FROM_NVRAM(bxa5g, "bxa5g", buf);
READ_FROM_NVRAM(cck2gpo, "cck2gpo", buf);
sprom->ofdm2gpo = nvram_getu32("ofdm2gpo", buf, sizeof(buf));
sprom->ofdm5glpo = nvram_getu32("ofdm5glpo", buf, sizeof(buf));
sprom->ofdm5gpo = nvram_getu32("ofdm5gpo", buf, sizeof(buf));
sprom->ofdm5ghpo = nvram_getu32("ofdm5ghpo", buf, sizeof(buf));
READ_FROM_NVRAM(antenna_gain.ghz24.a0, "ag0", buf);
READ_FROM_NVRAM(antenna_gain.ghz24.a1, "ag1", buf);
READ_FROM_NVRAM(antenna_gain.ghz24.a2, "ag2", buf);
READ_FROM_NVRAM(antenna_gain.ghz24.a3, "ag3", buf);
memcpy(&sprom->antenna_gain.ghz5, &sprom->antenna_gain.ghz24,
sizeof(sprom->antenna_gain.ghz5));
if (nvram_getprefix(prefix, "boardflags", buf, sizeof(buf)) >= 0) {
boardflags = simple_strtoul(buf, NULL, 0);
if (boardflags) {
sprom->boardflags_lo = (boardflags & 0x0000FFFFU);
sprom->boardflags_hi = (boardflags & 0xFFFF0000U) >> 16;
}
}
if (nvram_getprefix(prefix, "boardflags2", buf, sizeof(buf)) >= 0) {
boardflags = simple_strtoul(buf, NULL, 0);
if (boardflags) {
sprom->boardflags2_lo = (boardflags & 0x0000FFFFU);
sprom->boardflags2_hi = (boardflags & 0xFFFF0000U) >> 16;
}
}
}
int bcm47xx_get_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
{
char prefix[10];
if (bus->bustype == SSB_BUSTYPE_PCI) {
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));
if (nvram_getenv("boardvendor", buf, sizeof(buf)) >= 0)
iv->boardinfo.vendor = (u16)simple_strtoul(buf, NULL, 0);
else
iv->boardinfo.vendor = SSB_BOARDVENDOR_BCM;
if (nvram_getenv("boardtype", buf, sizeof(buf)) >= 0)
iv->boardinfo.type = (u16)simple_strtoul(buf, NULL, 0);
if (nvram_getenv("boardrev", buf, sizeof(buf)) >= 0)
iv->boardinfo.rev = (u16)simple_strtoul(buf, NULL, 0);
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;
}
void __init plat_mem_setup(void)
{
int err;
char buf[100];
struct ssb_mipscore *mcore;
err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom);
if (err)
printk(KERN_WARNING "bcm47xx: someone else already registered"
" a ssb SPROM callback handler (err %d)\n", err);
err = ssb_bus_ssbbus_register(&ssb_bcm47xx, SSB_ENUM_BASE,
bcm47xx_get_invariants);
if (err)
panic("Failed to initialize SSB bus (err %d)\n", err);
mcore = &ssb_bcm47xx.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));
}
}
_machine_restart = bcm47xx_machine_restart;
_machine_halt = bcm47xx_machine_halt;
pm_power_off = bcm47xx_machine_halt;
}
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