108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
/*
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* Copyright (c) 2011 Aeroflex Gaisler
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*
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* BSD license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef _INCLUDE_LEON3_h
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#define _INCLUDE_LEON3_h
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#ifndef __ASSEMBLER__
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#define ASI_LEON3_CACHEMISS 1
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#define ASI_LEON3_SYSCTRL 0x02
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#define ASI_LEON3_DFLUSH 0x11
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#define ASI_LEON3_SYSCTRL_ICFG 0x08
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#define ASI_LEON3_SYSCTRL_DCFG 0x0c
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#define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1<<27)
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#define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1<<((c>>20)&0xf))
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extern __inline__ unsigned long sparc_leon23_get_psr (void)
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{
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unsigned int retval;
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__asm__ __volatile__ ("rd %%psr, %0\n\t":"=r" (retval):);
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return (retval);
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}
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extern __inline__ unsigned long sparc_leon23_get_psr_version (void)
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{
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unsigned int psr = sparc_leon23_get_psr ();
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return (psr >> 24) & 0xf;
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}
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#define LEON_ISLEON2 (sparc_leon23_get_psr_version() == 2 || sparc_leon23_get_psr_version() == 0)
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#define LEON_ISLEON3 (sparc_leon23_get_psr_version() == 3)
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extern __inline__ unsigned long sparc_leon3_get_dcachecfg (void)
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{
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unsigned int retval;
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__asm__
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__volatile__ ("lda [%1] %2, %0\n\t":"=r" (retval):"r"
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(ASI_LEON3_SYSCTRL_DCFG), "i" (ASI_LEON3_SYSCTRL));
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return (retval);
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}
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extern __inline__ void sparc_leon3_enable_snooping (void)
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{
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/*enable snooping */
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__asm__ volatile ("lda [%%g0] 2, %%l1\n\t"
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"set 0x800000, %%l2\n\t"
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"or %%l2, %%l1, %%l2\n\t"
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"sta %%l2, [%%g0] 2\n\t":::"l1", "l2");
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};
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extern __inline__ void sparc_leon3_disable_cache (void)
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{
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/*asi 2 */
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__asm__ volatile ("lda [%%g0] 2, %%l1\n\t"
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"set 0x00000f, %%l2\n\t"
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"andn %%l2, %%l1, %%l2\n\t"
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"sta %%l2, [%%g0] 2\n\t":::"l1", "l2");
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};
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extern __inline__ void sparc_leon3_dcache_flush (void)
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{
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__asm__ __volatile__ (" flush "); //iflush
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__asm__
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__volatile__ ("sta %%g0, [%%g0] %0\n\t"::"i"
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(ASI_LEON3_DFLUSH):"memory");
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* !ASM */
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#endif /* !_INCLUDE_LEON3_h */
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/* end of include file */
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