diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 4c0ee58..67a1009 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -61,6 +61,7 @@ config ARCH_OMAP bool "TI OMAP" + select HAS_DEBUG_LL config ARCH_PXA bool "Intel/Marvell PXA based" diff --git a/arch/arm/mach-omap/include/mach/debug_ll.h b/arch/arm/mach-omap/include/mach/debug_ll.h new file mode 100644 index 0000000..be388d1 --- /dev/null +++ b/arch/arm/mach-omap/include/mach/debug_ll.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2011 + * Author: Jan Weitzel + * based on arch/arm/mach-versatile/include/mach/debug_ll.h + * + * barebox is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * barebox is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with barebox. If not, see . + */ + +#ifndef __MACH_DEBUG_LL_H__ +#define __MACH_DEBUG_LL_H__ + +#include + +#ifdef CONFIG_ARCH_OMAP3 +#include + +#ifdef CONFIG_OMAP3EVM_UART1 +#define UART_BASE OMAP_UART1_BASE +#else +#define UART_BASE OMAP_UART3_BASE +#endif + +#endif + +#ifdef CONFIG_ARCH_OMAP4 +#include +#define UART_BASE OMAP44XX_UART3_BASE +#endif + +#define LSR_THRE 0x20 /* Xmit holding register empty */ +#define LSR (5 << 2) +#define THR (0 << 2) + +static inline void putc(char c) +{ + /* Wait until there is space in the FIFO */ + while ((readb(UART_BASE + LSR) & LSR_THRE) == 0); + /* Send the character */ + writeb(c, UART_BASE + THR); + /* Wait to make sure it hits the line, in case we die too soon. */ + while ((readb(UART_BASE + LSR) & LSR_THRE) == 0); +} +#endif