diff options
| -rw-r--r-- | arch/arm/include/asm/debug_ll_pl011.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/include/asm/debug_ll_pl011.h b/arch/arm/include/asm/debug_ll_pl011.h new file mode 100644 index 0000000000..db015a373b --- /dev/null +++ b/arch/arm/include/asm/debug_ll_pl011.h @@ -0,0 +1,25 @@ +#ifndef __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__ +#define __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__ + +#ifndef DEBUG_LL_UART_ADDR +#error DEBUG_LL_UART_ADDR is undefined! +#endif + +#include <io.h> +#include <linux/amba/serial.h> + +static inline void PUTC_LL(char c) +{ + /* Wait until there is space in the FIFO */ + while (readl(DEBUG_LL_UART_ADDR + UART01x_FR) & UART01x_FR_TXFF) + ; + + /* Send the character */ + writel(c, DEBUG_LL_UART_ADDR + UART01x_DR); + + /* Wait to make sure it hits the line, in case we die too soon. */ + while (readl(DEBUG_LL_UART_ADDR + UART01x_FR) & UART01x_FR_TXFF) + ; +} + +#endif /* __INCLUDE_ARM_ASM_DEBUG_LL_PL011_H__ */ |