diff options
Diffstat (limited to 'arch/arm/mach-vexpress/include/mach/debug_ll.h')
| -rw-r--r-- | arch/arm/mach-vexpress/include/mach/debug_ll.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/mach-vexpress/include/mach/debug_ll.h b/arch/arm/mach-vexpress/include/mach/debug_ll.h new file mode 100644 index 0000000000..15d6e85239 --- /dev/null +++ b/arch/arm/mach-vexpress/include/mach/debug_ll.h @@ -0,0 +1,33 @@ +/* + * Copyright 2013 Jean-Christophe PLAGNIOL-VILLARD <plagniol@jcrosoft.com> + * + * GPLv2 only + */ + +#ifndef __MACH_DEBUG_LL_H__ +#define __MACH_DEBUG_LL_H__ + +#include <linux/amba/serial.h> +#include <io.h> + +#define DEBUG_LL_PHYS_BASE 0x10000000 +#define DEBUG_LL_PHYS_BASE_RS1 0x1c000000 + +#ifdef MP +#define UART_BASE DEBUG_LL_PHYS_BASE +#else +#define UART_BASE DEBUG_LL_PHYS_BASE_RS1 +#endif + +static inline void PUTC_LL(char c) +{ + /* Wait until there is space in the FIFO */ + while (readl(UART_BASE + UART01x_FR) & UART01x_FR_TXFF); + + /* Send the character */ + writel(c, UART_BASE + UART01x_DR); + + /* Wait to make sure it hits the line, in case we die too soon. */ + while (readl(UART_BASE + UART01x_FR) & UART01x_FR_TXFF); +} +#endif |