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 <mach/common.h> 20 21 struct 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) \ 38 static inline int is_davinci_ ##type(void) \ 39 { \ 40 return (davinci_soc_info.cpu_id == (id)); \ 41 } 42 43 IS_DAVINCI_CPU(dm644x, DAVINCI_CPU_ID_DM6446) 44 IS_DAVINCI_CPU(dm646x, DAVINCI_CPU_ID_DM6467) 45 IS_DAVINCI_CPU(dm355, DAVINCI_CPU_ID_DM355) 46 IS_DAVINCI_CPU(dm365, DAVINCI_CPU_ID_DM365) 47 IS_DAVINCI_CPU(da830, DAVINCI_CPU_ID_DA830) 48 IS_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 87