cputype.h (2317B)
1/* 2 * DaVinci CPU type detection 3 * 4 * Author: Kevin Hilman, Deep Root Systems, LLC 5 * 6 * Defines the cpu_is_*() macros for runtime detection of DaVinci 7 * device type. In addition, if support for a given device is not 8 * compiled in to the kernel, the macros return 0 so that 9 * resulting code can be optimized out. 10 * 11 * 2009 (c) Deep Root Systems, LLC. This file is licensed under 12 * the terms of the GNU General Public License version 2. This program 13 * is licensed "as is" without any warranty of any kind, whether express 14 * or implied. 15 */ 16#ifndef _ASM_ARCH_CPU_H 17#define _ASM_ARCH_CPU_H 18 19#include "common.h" 20 21struct davinci_id { 22 u8 variant; /* JTAG ID bits 31:28 */ 23 u16 part_no; /* JTAG ID bits 27:12 */ 24 u16 manufacturer; /* JTAG ID bits 11:1 */ 25 u32 cpu_id; 26 char *name; 27}; 28 29/* Can use lower 16 bits of cpu id for a variant when required */ 30#define DAVINCI_CPU_ID_DM6446 0x64460000 31#define DAVINCI_CPU_ID_DM6467 0x64670000 32#define DAVINCI_CPU_ID_DM355 0x03550000 33#define DAVINCI_CPU_ID_DM365 0x03650000 34#define DAVINCI_CPU_ID_DA830 0x08300000 35#define DAVINCI_CPU_ID_DA850 0x08500000 36 37#define IS_DAVINCI_CPU(type, id) \ 38static inline int is_davinci_ ##type(void) \ 39{ \ 40 return (davinci_soc_info.cpu_id == (id)); \ 41} 42 43IS_DAVINCI_CPU(dm644x, DAVINCI_CPU_ID_DM6446) 44IS_DAVINCI_CPU(dm646x, DAVINCI_CPU_ID_DM6467) 45IS_DAVINCI_CPU(dm355, DAVINCI_CPU_ID_DM355) 46IS_DAVINCI_CPU(dm365, DAVINCI_CPU_ID_DM365) 47IS_DAVINCI_CPU(da830, DAVINCI_CPU_ID_DA830) 48IS_DAVINCI_CPU(da850, DAVINCI_CPU_ID_DA850) 49 50#ifdef CONFIG_ARCH_DAVINCI_DM644x 51#define cpu_is_davinci_dm644x() is_davinci_dm644x() 52#else 53#define cpu_is_davinci_dm644x() 0 54#endif 55 56#ifdef CONFIG_ARCH_DAVINCI_DM646x 57#define cpu_is_davinci_dm646x() is_davinci_dm646x() 58#else 59#define cpu_is_davinci_dm646x() 0 60#endif 61 62#ifdef CONFIG_ARCH_DAVINCI_DM355 63#define cpu_is_davinci_dm355() is_davinci_dm355() 64#else 65#define cpu_is_davinci_dm355() 0 66#endif 67 68#ifdef CONFIG_ARCH_DAVINCI_DM365 69#define cpu_is_davinci_dm365() is_davinci_dm365() 70#else 71#define cpu_is_davinci_dm365() 0 72#endif 73 74#ifdef CONFIG_ARCH_DAVINCI_DA830 75#define cpu_is_davinci_da830() is_davinci_da830() 76#else 77#define cpu_is_davinci_da830() 0 78#endif 79 80#ifdef CONFIG_ARCH_DAVINCI_DA850 81#define cpu_is_davinci_da850() is_davinci_da850() 82#else 83#define cpu_is_davinci_da850() 0 84#endif 85 86#endif