1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * arch/arm/include/asm/vfp.h 4 * 5 * VFP register definitions. 6 * First, the standard VFP set. 7 */ 8 9 #ifndef __ASM_VFP_H 10 #define __ASM_VFP_H 11 12 #ifndef CONFIG_AS_VFP_VMRS_FPINST 13 #define FPSID cr0 14 #define FPSCR cr1 15 #define MVFR1 cr6 16 #define MVFR0 cr7 17 #define FPEXC cr8 18 #define FPINST cr9 19 #define FPINST2 cr10 20 #endif 21 22 /* FPSID bits */ 23 #define FPSID_IMPLEMENTER_BIT (24) 24 #define FPSID_IMPLEMENTER_MASK (0xff << FPSID_IMPLEMENTER_BIT) 25 #define FPSID_SOFTWARE (1<<23) 26 #define FPSID_FORMAT_BIT (21) 27 #define FPSID_FORMAT_MASK (0x3 << FPSID_FORMAT_BIT) 28 #define FPSID_NODOUBLE (1<<20) 29 #define FPSID_ARCH_BIT (16) 30 #define FPSID_ARCH_MASK (0xF << FPSID_ARCH_BIT) 31 #define FPSID_CPUID_ARCH_MASK (0x7F << FPSID_ARCH_BIT) 32 #define FPSID_PART_BIT (8) 33 #define FPSID_PART_MASK (0xFF << FPSID_PART_BIT) 34 #define FPSID_VARIANT_BIT (4) 35 #define FPSID_VARIANT_MASK (0xF << FPSID_VARIANT_BIT) 36 #define FPSID_REV_BIT (0) 37 #define FPSID_REV_MASK (0xF << FPSID_REV_BIT) 38 39 /* FPEXC bits */ 40 #define FPEXC_EX (1 << 31) 41 #define FPEXC_EN (1 << 30) 42 #define FPEXC_DEX (1 << 29) 43 #define FPEXC_FP2V (1 << 28) 44 #define FPEXC_VV (1 << 27) 45 #define FPEXC_TFV (1 << 26) 46 #define FPEXC_LENGTH_BIT (8) 47 #define FPEXC_LENGTH_MASK (7 << FPEXC_LENGTH_BIT) 48 #define FPEXC_IDF (1 << 7) 49 #define FPEXC_IXF (1 << 4) 50 #define FPEXC_UFF (1 << 3) 51 #define FPEXC_OFF (1 << 2) 52 #define FPEXC_DZF (1 << 1) 53 #define FPEXC_IOF (1 << 0) 54 #define FPEXC_TRAP_MASK (FPEXC_IDF|FPEXC_IXF|FPEXC_UFF|FPEXC_OFF|FPEXC_DZF|FPEXC_IOF) 55 56 /* FPSCR bits */ 57 #define FPSCR_DEFAULT_NAN (1<<25) 58 #define FPSCR_FLUSHTOZERO (1<<24) 59 #define FPSCR_ROUND_NEAREST (0<<22) 60 #define FPSCR_ROUND_PLUSINF (1<<22) 61 #define FPSCR_ROUND_MINUSINF (2<<22) 62 #define FPSCR_ROUND_TOZERO (3<<22) 63 #define FPSCR_RMODE_BIT (22) 64 #define FPSCR_RMODE_MASK (3 << FPSCR_RMODE_BIT) 65 #define FPSCR_STRIDE_BIT (20) 66 #define FPSCR_STRIDE_MASK (3 << FPSCR_STRIDE_BIT) 67 #define FPSCR_LENGTH_BIT (16) 68 #define FPSCR_LENGTH_MASK (7 << FPSCR_LENGTH_BIT) 69 #define FPSCR_IOE (1<<8) 70 #define FPSCR_DZE (1<<9) 71 #define FPSCR_OFE (1<<10) 72 #define FPSCR_UFE (1<<11) 73 #define FPSCR_IXE (1<<12) 74 #define FPSCR_IDE (1<<15) 75 #define FPSCR_IOC (1<<0) 76 #define FPSCR_DZC (1<<1) 77 #define FPSCR_OFC (1<<2) 78 #define FPSCR_UFC (1<<3) 79 #define FPSCR_IXC (1<<4) 80 #define FPSCR_IDC (1<<7) 81 82 /* MVFR0 bits */ 83 #define MVFR0_A_SIMD_BIT (0) 84 #define MVFR0_A_SIMD_MASK (0xf << MVFR0_A_SIMD_BIT) 85 #define MVFR0_SP_BIT (4) 86 #define MVFR0_SP_MASK (0xf << MVFR0_SP_BIT) 87 #define MVFR0_DP_BIT (8) 88 #define MVFR0_DP_MASK (0xf << MVFR0_DP_BIT) 89 90 /* MVFR1 bits */ 91 #define MVFR1_ASIMDHP_BIT (20) 92 #define MVFR1_ASIMDHP_MASK (0xf << MVFR1_ASIMDHP_BIT) 93 #define MVFR1_FPHP_BIT (24) 94 #define MVFR1_FPHP_MASK (0xf << MVFR1_FPHP_BIT) 95 96 /* Bit patterns for decoding the packaged operation descriptors */ 97 #define VFPOPDESC_LENGTH_BIT (9) 98 #define VFPOPDESC_LENGTH_MASK (0x07 << VFPOPDESC_LENGTH_BIT) 99 #define VFPOPDESC_UNUSED_BIT (24) 100 #define VFPOPDESC_UNUSED_MASK (0xFF << VFPOPDESC_UNUSED_BIT) 101 #define VFPOPDESC_OPDESC_MASK (~(VFPOPDESC_LENGTH_MASK | VFPOPDESC_UNUSED_MASK)) 102 103 #ifndef __ASSEMBLY__ 104 void vfp_disable(void); 105 #endif 106 107 #endif /* __ASM_VFP_H */ 108
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