diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-ep93xx/Kconfig | 14 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/uncompress.h | 21 |
2 files changed, 29 insertions, 6 deletions
diff --git a/arch/arm/mach-ep93xx/Kconfig b/arch/arm/mach-ep93xx/Kconfig index ea8549bfbef..5a1b8c05c95 100644 --- a/arch/arm/mach-ep93xx/Kconfig +++ b/arch/arm/mach-ep93xx/Kconfig @@ -88,6 +88,20 @@ config MACH_TS72XX Say 'Y' here if you want your kernel to support the Technologic Systems TS-72xx board. +choice + prompt "Select a UART for early kernel messages" + +config EP93XX_EARLY_UART1 + bool "UART1" + +config EP93XX_EARLY_UART2 + bool "UART2" + +config EP93XX_EARLY_UART3 + bool "UART3" + +endchoice + endmenu endif diff --git a/arch/arm/mach-ep93xx/include/mach/uncompress.h b/arch/arm/mach-ep93xx/include/mach/uncompress.h index 1fd2f17de32..16026c2b1c8 100644 --- a/arch/arm/mach-ep93xx/include/mach/uncompress.h +++ b/arch/arm/mach-ep93xx/include/mach/uncompress.h @@ -31,10 +31,19 @@ static void __raw_writel(unsigned int value, unsigned int ptr) *((volatile unsigned int *)ptr) = value; } - -#define PHYS_UART1_DATA 0x808c0000 -#define PHYS_UART1_FLAG 0x808c0018 -#define UART1_FLAG_TXFF 0x20 +#if defined(CONFIG_EP93XX_EARLY_UART1) +#define UART_BASE EP93XX_UART1_PHYS_BASE +#elif defined(CONFIG_EP93XX_EARLY_UART2) +#define UART_BASE EP93XX_UART2_PHYS_BASE +#elif defined(CONFIG_EP93XX_EARLY_UART3) +#define UART_BASE EP93XX_UART3_PHYS_BASE +#else +#define UART_BASE EP93XX_UART1_PHYS_BASE +#endif + +#define PHYS_UART_DATA (UART_BASE + 0x00) +#define PHYS_UART_FLAG (UART_BASE + 0x18) +#define UART_FLAG_TXFF 0x20 static inline void putc(int c) { @@ -42,11 +51,11 @@ static inline void putc(int c) for (i = 0; i < 1000; i++) { /* Transmit fifo not full? */ - if (!(__raw_readb(PHYS_UART1_FLAG) & UART1_FLAG_TXFF)) + if (!(__raw_readb(PHYS_UART_FLAG) & UART_FLAG_TXFF)) break; } - __raw_writeb(c, PHYS_UART1_DATA); + __raw_writeb(c, PHYS_UART_DATA); } static inline void flush(void) |