X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=sboot%2Fmagpie_1_1%2Fsboot%2Fathos%2Fsrc%2Fxtos%2Fshared-reset-vector.S;fp=sboot%2Fmagpie_1_1%2Fsboot%2Fathos%2Fsrc%2Fxtos%2Fshared-reset-vector.S;h=4b156c285cce07844f0bd04555fb7afc6794cded;hb=ff66305a044be28464fa0969ea2d605bb268d478;hp=0000000000000000000000000000000000000000;hpb=60b496560eec004ded92ae4dad43b3d102c6658d;p=open-ath9k-htc-firmware.git 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 index 0000000..4b156c2 --- /dev/null +++ b/sboot/magpie_1_1/sboot/athos/src/xtos/shared-reset-vector.S @@ -0,0 +1,64 @@ +// 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 + + // 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 +