linux/atheros: add 3.10 kernel support

[openwrt/svn-archive/archive.git] / target / linux / atheros / patches-3.10 / 101-early-printk-support.patch

diff --git a/target/linux/atheros/patches-3.10/101-early-printk-support.patch b/target/linux/atheros/patches-3.10/101-early-printk-support.patch
new file mode 100644 (file)
index 0000000..7b0b2ec
--- /dev/null
+++ b/target/linux/atheros/patches-3.10/101-early-printk-support.patch
@@ -0,0 +1,68 @@
+--- /dev/null
++++ b/arch/mips/ar231x/early_printk.c
+@@ -0,0 +1,44 @@
++/*
++ * This file is subject to the terms and conditions of the GNU General Public
++ * License.  See the file "COPYING" in the main directory of this archive
++ * for more details.
++ *
++ * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
++ */
++
++#include <linux/mm.h>
++#include <linux/io.h>
++#include <linux/serial_reg.h>
++#include <asm/addrspace.h>
++
++#include <asm/mach-ar231x/ar2315_regs.h>
++#include <asm/mach-ar231x/ar5312_regs.h>
++#include "devices.h"
++
++static inline void prom_uart_wr(void __iomem *base, unsigned reg,
++                              unsigned char ch)
++{
++      __raw_writeb(ch, base + 4 * reg);
++}
++
++static inline unsigned char prom_uart_rr(void __iomem *base, unsigned reg)
++{
++      return __raw_readb(base + 4 * reg);
++}
++
++void prom_putchar(unsigned char ch)
++{
++      static void __iomem *base;
++
++      if (unlikely(base == NULL)) {
++              if (is_2315())
++                      base = (void __iomem *)(KSEG1ADDR(AR2315_UART0));
++              else
++                      base = (void __iomem *)(KSEG1ADDR(AR531X_UART0));
++      }
++
++      while ((prom_uart_rr(base, UART_LSR) & UART_LSR_THRE) == 0);
++      prom_uart_wr(base, UART_TX, ch);
++      while ((prom_uart_rr(base, UART_LSR) & UART_LSR_THRE) == 0);
++}
++
+--- a/arch/mips/ar231x/Makefile
++++ b/arch/mips/ar231x/Makefile
+@@ -9,5 +9,8 @@
+ #
+ 
+ obj-y += board.o prom.o devices.o
++
++obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
++
+ obj-$(CONFIG_ATHEROS_AR5312) += ar5312.o
+ obj-$(CONFIG_ATHEROS_AR2315) += ar2315.o
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -145,6 +145,7 @@ config ATHEROS_AR231X
+       select SYS_SUPPORTS_BIG_ENDIAN
+       select SYS_SUPPORTS_32BIT_KERNEL
+       select ARCH_REQUIRE_GPIOLIB
++      select SYS_HAS_EARLY_PRINTK
+       help
+         Support for AR231x and AR531x based boards
+