brcm47xx: add patches for kernel 2.6.36

[openwrt/svn-archive/archive.git] / target / linux / brcm47xx / patches-2.6.36 / 014-MIPS-BCM47xx-Setup-and-register-serial-early.patch

diff --git a/target/linux/brcm47xx/patches-2.6.36/014-MIPS-BCM47xx-Setup-and-register-serial-early.patch b/target/linux/brcm47xx/patches-2.6.36/014-MIPS-BCM47xx-Setup-and-register-serial-early.patch
new file mode 100644 (file)
index 0000000..0d241e6
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.36/014-MIPS-BCM47xx-Setup-and-register-serial-early.patch
@@ -0,0 +1,75 @@
+From 9be402f069cc259ad5795b77567d66c4e7f6bef6 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sun, 18 Jul 2010 14:59:24 +0200
+Subject: [PATCH 4/6] MIPS: BCM47xx: Setup and register serial early
+
+Swap the first and second serial if console=ttyS1 was set.
+Set it up and register it for early serial support.
+
+This patch has been in OpenWRT for a long time.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ arch/mips/bcm47xx/setup.c |   39 ++++++++++++++++++++++++++++++++++++++-
+ 1 files changed, 38 insertions(+), 1 deletions(-)
+
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -28,6 +28,8 @@
+ #include <linux/types.h>
+ #include <linux/ssb/ssb.h>
+ #include <linux/ssb/ssb_embedded.h>
++#include <linux/serial.h>
++#include <linux/serial_8250.h>
+ #include <asm/bootinfo.h>
+ #include <asm/reboot.h>
+ #include <asm/time.h>
+@@ -190,12 +192,47 @@ static int bcm47xx_get_invariants(struct
+ 
+ void __init plat_mem_setup(void)
+ {
+-      int err;
++      int i, 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 ||
++          cfe_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));
++              }
++      }
++
++      for (i = 0; i < mcore->nr_serial_ports; i++) {
++              struct ssb_serial_port *port = &(mcore->serial_ports[i]);
++              struct uart_port s;
++
++              memset(&s, 0, sizeof(s));
++              s.line = i;
++              s.mapbase = (unsigned int) port->regs;
++              s.membase = port->regs;
++              s.irq = port->irq + 2;
++              s.uartclk = port->baud_base;
++              s.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
++              s.iotype = SERIAL_IO_MEM;
++              s.regshift = port->reg_shift;
++
++              early_serial_setup(&s);
++      }
++      printk(KERN_DEBUG "Serial init done.\n");
+ 
+       _machine_restart = bcm47xx_machine_restart;
+       _machine_halt = bcm47xx_machine_halt;