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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-08-15 20:18:41 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-08-15 20:18:41 +0000 |
commit | 30abd24b7e7bc1f66b22527792931cf4468b06b8 (patch) | |
tree | fba359b7e4b04fdd1f008f54fcca7b69d810bab6 /c/src/lib/libcpu/bfin/mmu/mmu.h | |
parent | 2008-08-15 Joel Sherrill <joel.sherrill@OARcorp.com> (diff) | |
download | rtems-30abd24b7e7bc1f66b22527792931cf4468b06b8.tar.bz2 |
2008-08-15 Allan Hessenflow <allanh@kallisti.com>
* ChangeLog, Makefile.am, README, configure.ac, preinstall.am,
cache/cache.c, cache/cache_.h, clock/clock.c, clock/rtc.c,
clock/tod.h, include/bf533.h, include/bf537.h, include/cecRegs.h,
include/coreTimerRegs.h, include/dmaRegs.h, include/ebiuRegs.h,
include/ethernetRegs.h, include/gpioRegs.h, include/memoryRegs.h,
include/mmuRegs.h, include/ppiRegs.h, include/rtcRegs.h,
include/sicRegs.h, include/spiRegs.h, include/sportRegs.h,
include/timerRegs.h, include/twiRegs.h, include/uartRegs.h,
include/wdogRegs.h, interrupt/interrupt.c, interrupt/interrupt.h,
mmu/mmu.c, mmu/mmu.h, network/ethernet.c, network/ethernet.h,
serial/spi.c, serial/spi.h, serial/sport.c, serial/sport.h,
serial/twi.c, serial/twi.h, serial/uart.c, serial/uart.h,
timer/timer.c: New files.
Diffstat (limited to 'c/src/lib/libcpu/bfin/mmu/mmu.h')
-rw-r--r-- | c/src/lib/libcpu/bfin/mmu/mmu.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/bfin/mmu/mmu.h b/c/src/lib/libcpu/bfin/mmu/mmu.h new file mode 100644 index 0000000000..8a57750ba5 --- /dev/null +++ b/c/src/lib/libcpu/bfin/mmu/mmu.h @@ -0,0 +1,65 @@ +/* Blackfin MMU Support + * + * Copyright (c) 2008 Kallisti Labs, Los Gatos, CA, USA + * written by Allan Hessenflow <allanh@kallisti.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + + +/* NOTE: this currently only implements a static table. It should be made + to handle more regions than fit in the CPLBs, with an exception handler + to do replacements as needed. This would of course require great care + to insure any storage required by the exception handler, including any + stack space, the exception handler itself, and the region descriptors + it needs to update the CPLBs, are in regions that will never be + replaced. */ + +#ifndef _mmu_h_ +#define _mmu_h_ + +#include <libcpu/mmuRegs.h> + + +#define INSTR_CACHEABLE (ICPLB_DATA_CPLB_L1_CHBL | \ + ICPLB_DATA_CPLB_USER_RD | \ + ICPLB_DATA_CPLB_VALID) + +#define DATA_WRITEBACK (DCPLB_DATA_CPLB_L1_AOW | \ + DCPLB_DATA_CPLB_L1_CHBL | \ + DCPLB_DATA_CPLB_SUPV_WR | \ + DCPLB_DATA_CPLB_USER_WR | \ + DCPLB_DATA_CPLB_USER_RD | \ + DCPLB_DATA_CPLB_VALID) + + +#ifdef __cplusplus +extern "C" { +#endif + + +typedef struct { + struct { + void *address; + uint32_t flags; + } instruction[ICPLB_COUNT]; + struct { + void *address; + uint32_t flags; + } data[DCPLB_COUNT]; +} bfin_mmu_config_t; + + +void bfin_mmu_init(bfin_mmu_config_t *config); + + +#ifdef __cplusplus +} +#endif + +#endif /* _mmu_h_ */ + |