[444] | 1 | /* |
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| 2 | * Copyright (c) 2011 Aeroflex Gaisler |
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| 3 | * |
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| 4 | * BSD license: |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 7 | * of this software and associated documentation files (the "Software"), to deal |
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| 8 | * in the Software without restriction, including without limitation the rights |
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| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 10 | * copies of the Software, and to permit persons to whom the Software is |
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| 11 | * furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included in |
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| 14 | * all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 22 | * THE SOFTWARE. |
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| 23 | */ |
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| 24 | |
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| 25 | |
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| 26 | #ifndef _INCLUDE_LEON3_h |
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| 27 | #define _INCLUDE_LEON3_h |
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| 28 | |
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| 29 | #ifndef __ASSEMBLER__ |
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| 30 | |
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| 31 | #ifdef __cplusplus |
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| 32 | extern "C" |
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| 33 | { |
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| 34 | #endif |
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| 35 | |
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| 36 | #define ASI_LEON3_CACHEMISS 1 |
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| 37 | #define ASI_LEON3_SYSCTRL 0x02 |
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| 38 | #define ASI_LEON3_DFLUSH 0x11 |
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| 39 | |
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| 40 | #define ASI_LEON3_SYSCTRL_ICFG 0x08 |
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| 41 | #define ASI_LEON3_SYSCTRL_DCFG 0x0c |
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| 42 | #define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1<<27) |
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| 43 | #define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1<<((c>>20)&0xf)) |
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| 44 | |
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| 45 | |
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| 46 | extern __inline__ unsigned long sparc_leon23_get_psr (void) |
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| 47 | { |
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| 48 | unsigned int retval; |
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| 49 | __asm__ __volatile__ ("rd %%psr, %0\n\t":"=r" (retval):); |
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| 50 | return (retval); |
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| 51 | } |
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| 52 | |
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| 53 | extern __inline__ unsigned long sparc_leon23_get_psr_version (void) |
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| 54 | { |
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| 55 | unsigned int psr = sparc_leon23_get_psr (); |
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| 56 | return (psr >> 24) & 0xf; |
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| 57 | } |
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| 58 | #define LEON_ISLEON2 (sparc_leon23_get_psr_version() == 2 || sparc_leon23_get_psr_version() == 0) |
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| 59 | #define LEON_ISLEON3 (sparc_leon23_get_psr_version() == 3) |
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| 60 | |
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| 61 | extern __inline__ unsigned long sparc_leon3_get_dcachecfg (void) |
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| 62 | { |
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| 63 | unsigned int retval; |
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| 64 | __asm__ |
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| 65 | __volatile__ ("lda [%1] %2, %0\n\t":"=r" (retval):"r" |
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| 66 | (ASI_LEON3_SYSCTRL_DCFG), "i" (ASI_LEON3_SYSCTRL)); |
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| 67 | return (retval); |
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| 68 | } |
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| 69 | |
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| 70 | extern __inline__ void sparc_leon3_enable_snooping (void) |
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| 71 | { |
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| 72 | /*enable snooping */ |
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| 73 | __asm__ volatile ("lda [%%g0] 2, %%l1\n\t" |
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| 74 | "set 0x800000, %%l2\n\t" |
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| 75 | "or %%l2, %%l1, %%l2\n\t" |
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| 76 | "sta %%l2, [%%g0] 2\n\t":::"l1", "l2"); |
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| 77 | }; |
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| 78 | |
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| 79 | extern __inline__ void sparc_leon3_disable_cache (void) |
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| 80 | { |
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| 81 | /*asi 2 */ |
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| 82 | __asm__ volatile ("lda [%%g0] 2, %%l1\n\t" |
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| 83 | "set 0x00000f, %%l2\n\t" |
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| 84 | "andn %%l2, %%l1, %%l2\n\t" |
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| 85 | "sta %%l2, [%%g0] 2\n\t":::"l1", "l2"); |
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| 86 | }; |
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| 87 | |
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| 88 | |
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| 89 | |
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| 90 | extern __inline__ void sparc_leon3_dcache_flush (void) |
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| 91 | { |
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| 92 | __asm__ __volatile__ (" flush "); //iflush |
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| 93 | __asm__ |
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| 94 | __volatile__ ("sta %%g0, [%%g0] %0\n\t"::"i" |
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| 95 | (ASI_LEON3_DFLUSH):"memory"); |
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| 96 | }; |
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| 97 | |
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| 98 | |
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| 99 | #ifdef __cplusplus |
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| 100 | } |
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| 101 | #endif |
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| 102 | |
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| 103 | #endif /* !ASM */ |
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| 104 | |
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| 105 | |
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| 106 | #endif /* !_INCLUDE_LEON3_h */ |
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| 107 | /* end of include file */ |
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