move sboot to the root directory

[open-ath9k-htc-firmware.git] / sboot / magpie_1_1 / sboot / athos / src / xtos / shared-reset-vector.S

diff --git a/sboot/magpie_1_1/sboot/athos/src/xtos/shared-reset-vector.S b/sboot/magpie_1_1/sboot/athos/src/xtos/shared-reset-vector.S
new file mode 100644 (file)
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--- /dev/null
+++ b/sboot/magpie_1_1/sboot/athos/src/xtos/shared-reset-vector.S
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+// shared-reset-vector.S  --  Sharable Reset Vector (requires PRID option)
+
+// Copyright (c) 1999-2010 Tensilica Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#include <xtensa/coreasm.h>
+
+       //  Populate this processor's entry in the reset table.
+       //  The core instance specific LSP should put this section
+       //  in the correct location within the table.
+       //
+       .section .ResetTable.rodata, "a"
+       .word   _ResetHandler
+
+       //  This sharable reset code assumes RC-2009.0 or later hardware,
+       //  to guarantee that no processor state initialization is required
+       //  prior to doing loads etc.
+       //  Total size is 28 bytes (or 27 with density option).
+       //  By necessity, none of these bytes vary by core instance;
+       //  the appropriate reset table entry is selected using PRID.
+       //
+#if XCHAL_HAVE_PRID
+       .section .SharedResetVector.text, "ax"
+       .begin  no-absolute-literals
+
+       .align  4
+       .global _SharedResetVector
+_SharedResetVector:
+       j       .LSharedResetHandler
+
+       .align  4
+       .literal_position
+
+       .align  4
+.LSharedResetHandler:
+       rsr.prid   a0           // get processor ID (16 bits)
+       movi    a1, _ResetTable_base
+       extui   a0, a0, 0, 4    // ID of core within the multiprocessor (FIXME: need proper constant...)
+       addx4   a1, a0, a1
+       l32i    a1, a1, 0
+       jx      a1              // jump to core-specific initialization
+
+       .size   _SharedResetVector, . - _SharedResetVector
+       .end    no-absolute-literals
+#endif
+