brcm47xx: update early printk patches

Early printk was disabled because it caused hangs on some devices, the 
old patches were using the CFE console now we use the normal serial 
console, it is at a constant address.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38309 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 53 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch b/target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch
new file mode 100644
index 0000000000..744e35985e
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.10/082-MIPS-BCM47XX-add-EARLY_PRINTK_8250-support.patch
@@ -0,0 +1,53 @@
+commit 22250a38f970c173acb1b3fb30e6dce1430f697b
+Author: Hauke Mehrtens <hauke@hauke-m.de>
+Date:   Thu Sep 19 22:48:35 2013 +0200
+
+    MIPS: BCM47XX: add EARLY_PRINTK_8250 support
+    
+    The BCM47xx SoCs have a 8250 serial compatible console at address
+    0x18000300 and an other at 0x18000400. On most devices 0x18000300 is
+    wired to some pins on the board, we should use that.
+    This is the smae for the AI (bcma) and the SB (ssb) bus, this is some
+    offset on the chip common core.
+    
+    Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -117,6 +117,8 @@ config BCM47XX
+ 	select NO_EXCEPT_FILL
+ 	select SYS_SUPPORTS_32BIT_KERNEL
+ 	select SYS_SUPPORTS_LITTLE_ENDIAN
++	select SYS_HAS_EARLY_PRINTK
++	select EARLY_PRINTK_8250 if EARLY_PRINTK
+ 	help
+ 	 Support for BCM47XX based boards
+ 
+--- a/arch/mips/bcm47xx/prom.c
++++ b/arch/mips/bcm47xx/prom.c
+@@ -28,6 +28,8 @@
+ #include <linux/types.h>
+ #include <linux/kernel.h>
+ #include <linux/spinlock.h>
++#include <linux/ssb/ssb_driver_chipcommon.h>
++#include <linux/ssb/ssb_regs.h>
+ #include <linux/smp.h>
+ #include <asm/bootinfo.h>
+ #include <bcm47xx.h>
+@@ -94,9 +96,16 @@ static __init void prom_init_mem(void)
+ 	add_memory_region(0, mem, BOOT_MEM_RAM);
+ }
+ 
++/*
++ * This is the first serial on the chip common core, it is at this position
++ * for sb (ssb) and ai (bcma) bus.
++ */
++#define BCM47XX_SERIAL_ADDR (SSB_ENUM_BASE + SSB_CHIPCO_UART0_DATA)
++
+ void __init prom_init(void)
+ {
+ 	prom_init_mem();
++	setup_8250_early_printk_port(CKSEG1ADDR(BCM47XX_SERIAL_ADDR), 0, 0);
+ }
+ 
+ void __init prom_free_prom_memory(void)