brcm47xx: backport patch from kernel 2.6.37

[openwrt/svn-archive/archive.git] / target / linux / brcm47xx / patches-2.6.36 / 013-MIPS-BCM47xx-Swap-serial-console-if-ttyS1-was-specif.patch

diff --git a/target/linux/brcm47xx/patches-2.6.36/013-MIPS-BCM47xx-Swap-serial-console-if-ttyS1-was-specif.patch b/target/linux/brcm47xx/patches-2.6.36/013-MIPS-BCM47xx-Swap-serial-console-if-ttyS1-was-specif.patch
new file mode 100644 (file)
index 0000000..e6a0d52
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.36/013-MIPS-BCM47xx-Swap-serial-console-if-ttyS1-was-specif.patch
@@ -0,0 +1,45 @@
+From 25abc0cde3f4865910b380d68ffda0916b5870e7 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 27 Nov 2010 12:25:21 +0100
+Subject: [PATCH 4/6] 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>
+---
+ arch/mips/bcm47xx/setup.c |   16 ++++++++++++++++
+ 1 files changed, 16 insertions(+), 0 deletions(-)
+
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -169,12 +169,28 @@ static int bcm47xx_get_invariants(struct
+ 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;