Rename 'atheros' target to 'ath25'

[openwrt.git] / target / linux / ath25 / patches-3.18 / 020-early-printk-support.patch

diff --git a/target/linux/ath25/patches-3.18/020-early-printk-support.patch b/target/linux/ath25/patches-3.18/020-early-printk-support.patch
new file mode 100644 (file)
index 0000000..bd937d3
--- /dev/null
+++ b/target/linux/ath25/patches-3.18/020-early-printk-support.patch
@@ -0,0 +1,68 @@
+--- /dev/null
++++ b/arch/mips/ath25/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 "devices.h"
++#include "ar2315_regs.h"
++#include "ar5312_regs.h"
++
++static inline void prom_uart_wr(void __iomem *base, unsigned reg,
++                              unsigned char ch)
++{
++      __raw_writel(ch, base + 4 * reg);
++}
++
++static inline unsigned char prom_uart_rr(void __iomem *base, unsigned reg)
++{
++      return __raw_readl(base + 4 * reg);
++}
++
++void prom_putchar(unsigned char ch)
++{
++      static void __iomem *base;
++
++      if (unlikely(base == NULL)) {
++              if (is_ar2315())
++                      base = (void __iomem *)(KSEG1ADDR(AR2315_UART0_BASE));
++              else
++                      base = (void __iomem *)(KSEG1ADDR(AR5312_UART0_BASE));
++      }
++
++      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/ath25/Makefile
++++ b/arch/mips/ath25/Makefile
+@@ -9,5 +9,8 @@
+ #
+ 
+ obj-y += board.o prom.o devices.o
++
++obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
++
+ obj-$(CONFIG_SOC_AR5312) += ar5312.o
+ obj-$(CONFIG_SOC_AR2315) += ar2315.o
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -106,6 +106,7 @@ config ATH25
+       select SYS_HAS_CPU_MIPS32_R1
+       select SYS_SUPPORTS_BIG_ENDIAN
+       select SYS_SUPPORTS_32BIT_KERNEL
++      select SYS_HAS_EARLY_PRINTK
+       help
+         Support for Atheros AR231x and Atheros AR531x based boards
+