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-rw-r--r--target/linux/ramips/patches-3.18/0015-MIPS-ralink-cleanup-early_printk.patch79
1 files changed, 79 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.18/0015-MIPS-ralink-cleanup-early_printk.patch b/target/linux/ramips/patches-3.18/0015-MIPS-ralink-cleanup-early_printk.patch
new file mode 100644
index 0000000000..d139139322
--- /dev/null
+++ b/target/linux/ramips/patches-3.18/0015-MIPS-ralink-cleanup-early_printk.patch
@@ -0,0 +1,79 @@
+From e410b0069ee7c318a5b556f39b8b16814330a208 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Fri, 24 Jan 2014 17:01:17 +0100
+Subject: [PATCH 15/57] MIPS: ralink: cleanup early_printk
+
+Add support for the new MT7621/8 SoC and kill ifdefs.
+Cleanup some whitespace error while we are at it.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/ralink/early_printk.c | 45 ++++++++++++++++++++++++++-------------
+ 1 file changed, 30 insertions(+), 15 deletions(-)
+
+--- a/arch/mips/ralink/early_printk.c
++++ b/arch/mips/ralink/early_printk.c
+@@ -12,21 +12,24 @@
+ #include <asm/addrspace.h>
+
+ #ifdef CONFIG_SOC_RT288X
+-#define EARLY_UART_BASE 0x300c00
++#define EARLY_UART_BASE 0x300c00
++#define CHIPID_BASE 0x300004
++#elif defined(CONFIG_SOC_MT7621)
++#define EARLY_UART_BASE 0x1E000c00
++#define CHIPID_BASE 0x1E000004
+ #else
+-#define EARLY_UART_BASE 0x10000c00
++#define EARLY_UART_BASE 0x10000c00
++#define CHIPID_BASE 0x10000004
+ #endif
+
+-#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
++#define MT7628_CHIP_NAME1 0x20203832
++
++#define UART_REG_TX 0x04
++#define UART_REG_LSR 0x14
++#define UART_REG_LSR_RT2880 0x1c
+
+ static __iomem void *uart_membase = (__iomem void *) KSEG1ADDR(EARLY_UART_BASE);
++static __iomem void *chipid_membase = (__iomem void *) KSEG1ADDR(CHIPID_BASE);
+
+ static inline void uart_w32(u32 val, unsigned reg)
+ {
+@@ -38,11 +41,23 @@ static inline u32 uart_r32(unsigned reg)
+ return __raw_readl(uart_membase + reg);
+ }
+
++static inline int soc_is_mt7628(void)
++{
++ return IS_ENABLED(CONFIG_SOC_MT7620) &&
++ (__raw_readl(chipid_membase) == MT7628_CHIP_NAME1);
++}
++
+ 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)
+- ;
++ if (IS_ENABLED(CONFIG_SOC_MT7621) || soc_is_mt7628()) {
++ uart_w32(ch, UART_TX);
++ while ((uart_r32(UART_REG_LSR) & UART_LSR_THRE) == 0)
++ ;
++ } else {
++ while ((uart_r32(UART_REG_LSR_RT2880) & UART_LSR_THRE) == 0)
++ ;
++ uart_w32(ch, UART_REG_TX);
++ while ((uart_r32(UART_REG_LSR_RT2880) & UART_LSR_THRE) == 0)
++ ;
++ }
+ }