From 1690a7f9ab83f5c823f3044275a4a771a059d5bb Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 27 Nov 2010 17:46:01 +0100 Subject: [PATCH] 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 To: linux-mips@linux-mips.org Cc: Hauke Mehrtens Patchwork: https://patchwork.linux-mips.org/patch/1848/ Signed-off-by: Ralf Baechle --- arch/mips/bcm47xx/setup.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c index 87a305536604..c95f90bf734c 100644 --- a/arch/mips/bcm47xx/setup.c +++ b/arch/mips/bcm47xx/setup.c @@ -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; -- 2.34.1