MIPS: BCM47xx: Swap serial console if ttyS1 was specified.

Some devices like the Netgear WGT634U are using ttyS1 for default console
output. We should switch to that console if it was given in the kernel_args
parameters.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
To: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/1848/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Hauke Mehrtens 2010-11-27 17:46:01 +01:00 committed by Ralf Baechle
parent 59833fcf48
commit 1690a7f9ab

View File

@ -169,12 +169,28 @@ static int bcm47xx_get_invariants(struct ssb_bus *bus,
void __init plat_mem_setup(void)
{
int err;
char buf[100];
struct ssb_mipscore *mcore;
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;