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

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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
1 changed files with 16 additions and 0 deletions
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16
arch/mips/bcm47xx/setup.c
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@ -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;