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authorJoel Sherrill <joel.sherrill@OARcorp.com>2008-08-15 20:18:41 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2008-08-15 20:18:41 +0000
commit30abd24b7e7bc1f66b22527792931cf4468b06b8 (patch)
treefba359b7e4b04fdd1f008f54fcca7b69d810bab6 /c/src/lib/libcpu/bfin/mmu/mmu.h
parent2008-08-15 Joel Sherrill <joel.sherrill@OARcorp.com> (diff)
downloadrtems-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.h65
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_ */
+