diff options
Diffstat (limited to 'arch/arm/mach-imx/include/mach/debug_ll.h')
| -rw-r--r-- | arch/arm/mach-imx/include/mach/debug_ll.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/debug_ll.h b/arch/arm/mach-imx/include/mach/debug_ll.h new file mode 100644 index 0000000000..cb6dd039bc --- /dev/null +++ b/arch/arm/mach-imx/include/mach/debug_ll.h @@ -0,0 +1,46 @@ +#ifndef __MACH_DEBUG_LL_H__ +#define __MACH_DEBUG_LL_H__ + +#include <io.h> +#include <config.h> +#include <mach/imx1-regs.h> +#include <mach/imx21-regs.h> +#include <mach/imx25-regs.h> +#include <mach/imx27-regs.h> +#include <mach/imx31-regs.h> +#include <mach/imx35-regs.h> +#include <mach/imx51-regs.h> +#include <mach/imx53-regs.h> +#include <mach/imx6-regs.h> + +/* #define IMX_DEBUG_LL_UART_BASE MXxy_UARTx_BASE_ADDR */ + +#ifndef IMX_DEBUG_LL_UART_BASE +#warning define IMX_DEBUG_LL_UART_BASE properly for debug_ll +#define IMX_DEBUG_LL_UART_BASE 0 +#endif + +#define URTX0 0x40 /* Transmitter Register */ + +#define UCR1 0x80 /* Control Register 1 */ +#define UCR1_UARTEN (1 << 0) /* UART enabled */ + +#define USR2 0x98 /* Status Register 2 */ +#define USR2_TXDC (1 << 3) /* Transmitter complete */ + +static inline void PUTC_LL(int c) +{ + void __iomem *base = (void *)IMX_DEBUG_LL_UART_BASE; + + if (!base) + return; + + if (!(readl(base + UCR1) & UCR1_UARTEN)) + return; + + while (!(readl(base + USR2) & USR2_TXDC)); + + writel(c, base + URTX0); +} + +#endif /* __MACH_DEBUG_LL_H__ */ |