diff options
| author | Cyril Chemparathy <cyril@ti.com> | 2010-05-18 12:51:17 -0400 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2010-06-21 12:48:30 -0700 |
| commit | dc2eb76c40590a3c080294d1fbd000c8f70d88a9 (patch) | |
| tree | 8c7bccdd0eb4dfba763cd19216d8c0a13dfb5d51 /arch/arm/mach-davinci/include/mach/serial.h | |
| parent | 7e27d6e778cd87b6f2415515d7127eba53fe5d02 (diff) | |
| download | kernel_samsung_smdk4412-dc2eb76c40590a3c080294d1fbd000c8f70d88a9.zip kernel_samsung_smdk4412-dc2eb76c40590a3c080294d1fbd000c8f70d88a9.tar.gz kernel_samsung_smdk4412-dc2eb76c40590a3c080294d1fbd000c8f70d88a9.tar.bz2 | |
Davinci: generalized debug macros
This patch adopts a debug uart selection similar to the OMAP model. During
the boot process, the uncompress code determines the physical and virtual base
addresses of the board-specific debug uart. These addresses are then passed
on to the in-kernel debug macros through a small chunk of memory placed just
below the page tables (@0x80003ff8).
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/serial.h')
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/serial.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/include/mach/serial.h b/arch/arm/mach-davinci/include/mach/serial.h index f6c4f34..b21ec22 100644 --- a/arch/arm/mach-davinci/include/mach/serial.h +++ b/arch/arm/mach-davinci/include/mach/serial.h @@ -11,8 +11,19 @@ #ifndef __ASM_ARCH_SERIAL_H #define __ASM_ARCH_SERIAL_H +#include <asm/memory.h> + #include <mach/hardware.h> +/* + * Stolen area that contains debug uart physical and virtual addresses. These + * addresses are filled in by the uncompress.h code, and are used by the debug + * macros in debug-macro.S. + * + * This area sits just below the page tables (see arch/arm/kernel/head.S). + */ +#define DAVINCI_UART_INFO (PHYS_OFFSET + 0x3ff8) + #define DAVINCI_UART0_BASE (IO_PHYS + 0x20000) #define DAVINCI_UART1_BASE (IO_PHYS + 0x20400) #define DAVINCI_UART2_BASE (IO_PHYS + 0x20800) @@ -26,11 +37,13 @@ #define UART_DM646X_SCR 0x10 #define UART_DM646X_SCR_TX_WATERMARK 0x08 +#ifndef __ASSEMBLY__ struct davinci_uart_config { /* Bit field of UARTs present; bit 0 --> UART1 */ unsigned int enabled_uarts; }; extern int davinci_serial_init(struct davinci_uart_config *); +#endif #endif /* __ASM_ARCH_SERIAL_H */ |