diff options
Diffstat (limited to 'target/linux/ramips/patches-3.8/0007-MIPS-ralink-adds-early_printk-support.patch')
| -rw-r--r-- | target/linux/ramips/patches-3.8/0007-MIPS-ralink-adds-early_printk-support.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.8/0007-MIPS-ralink-adds-early_printk-support.patch b/target/linux/ramips/patches-3.8/0007-MIPS-ralink-adds-early_printk-support.patch new file mode 100644 index 0000000000..dc36ed184f --- /dev/null +++ b/target/linux/ramips/patches-3.8/0007-MIPS-ralink-adds-early_printk-support.patch @@ -0,0 +1,68 @@ +From 5fff610b7c60195de98e68bec00c357f393ce634 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Sun, 20 Jan 2013 22:02:55 +0100 +Subject: [PATCH 07/14] MIPS: ralink: adds early_printk support + +Add the code needed to make early printk work. + +Signed-off-by: John Crispin <blogic@openwrt.org> +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +Patchwork: http://patchwork.linux-mips.org/patch/4897/ +--- + arch/mips/ralink/early_printk.c | 44 +++++++++++++++++++++++++++++++++++++++ + 1 file changed, 44 insertions(+) + create mode 100644 arch/mips/ralink/early_printk.c + +diff --git a/arch/mips/ralink/early_printk.c b/arch/mips/ralink/early_printk.c +new file mode 100644 +index 0000000..c4ae47e +--- /dev/null ++++ b/arch/mips/ralink/early_printk.c +@@ -0,0 +1,44 @@ ++/* ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License version 2 as published ++ * by the Free Software Foundation. ++ * ++ * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> ++ */ ++ ++#include <linux/io.h> ++#include <linux/serial_reg.h> ++ ++#include <asm/addrspace.h> ++ ++#define EARLY_UART_BASE 0x10000c00 ++ ++#define UART_REG_RX 0x00 ++#define UART_REG_TX 0x04 ++#define UART_REG_IER 0x08 ++#define UART_REG_IIR 0x0c ++#define UART_REG_FCR 0x10 ++#define UART_REG_LCR 0x14 ++#define UART_REG_MCR 0x18 ++#define UART_REG_LSR 0x1c ++ ++static __iomem void *uart_membase = (__iomem void *) KSEG1ADDR(EARLY_UART_BASE); ++ ++static inline void uart_w32(u32 val, unsigned reg) ++{ ++ __raw_writel(val, uart_membase + reg); ++} ++ ++static inline u32 uart_r32(unsigned reg) ++{ ++ return __raw_readl(uart_membase + reg); ++} ++ ++void prom_putchar(unsigned char ch) ++{ ++ while ((uart_r32(UART_REG_LSR) & UART_LSR_THRE) == 0) ++ ; ++ uart_w32(ch, UART_REG_TX); ++ while ((uart_r32(UART_REG_LSR) & UART_LSR_THRE) == 0) ++ ; ++} +-- +1.7.10.4 + |