diff options
Diffstat (limited to 'arch/arm/mach-layerscape/include/mach/debug_ll.h')
-rw-r--r-- | arch/arm/mach-layerscape/include/mach/debug_ll.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-layerscape/include/mach/debug_ll.h b/arch/arm/mach-layerscape/include/mach/debug_ll.h new file mode 100644 index 0000000000..2658a4a7c9 --- /dev/null +++ b/arch/arm/mach-layerscape/include/mach/debug_ll.h @@ -0,0 +1,34 @@ +#ifndef __INCLUDE_ARCH_DEBUG_LL_H__ +#define __INCLUDE_ARCH_DEBUG_LL_H__ + +#include <io.h> +#include <soc/fsl/immap_lsch2.h> + +#define __LS_UART_BASE(num) LSCH2_NS16550_COM##num +#define LS_UART_BASE(num) __LS_UART_BASE(num) + +static inline uint8_t debug_ll_read_reg(int reg) +{ + void __iomem *base = IOMEM(LS_UART_BASE(CONFIG_DEBUG_LAYERSCAPE_UART_PORT)); + + return readb(base + reg); +} + +static inline void debug_ll_write_reg(int reg, uint8_t val) +{ + void __iomem *base = IOMEM(LS_UART_BASE(CONFIG_DEBUG_LAYERSCAPE_UART_PORT)); + + writeb(val, base + reg); +} + +#include <debug_ll/ns16550.h> + +static inline void debug_ll_init(void) +{ + uint16_t divisor; + + divisor = debug_ll_ns16550_calc_divisor(300000000); + debug_ll_ns16550_init(divisor); +} + +#endif /* __INCLUDE_ARCH_DEBUG_LL_H__ */ |