diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.37/014-MIPS-BCM47xx-Setup-and-register-serial-early.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.37/014-MIPS-BCM47xx-Setup-and-register-serial-early.patch | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.37/014-MIPS-BCM47xx-Setup-and-register-serial-early.patch b/target/linux/brcm47xx/patches-2.6.37/014-MIPS-BCM47xx-Setup-and-register-serial-early.patch new file mode 100644 index 0000000000..0d241e656b --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.37/014-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; |