345 lines
9.8 KiB
ArmAsm
345 lines
9.8 KiB
ArmAsm
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/* MANAGED-BY-SYSTEM-BUILDER */
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/* VisualDSP++ 5.0 Update 6 */
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/* CRT Printer version: 5.6.0.4 */
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/* crtgen.exe version: 5.6.0.4 */
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/* VDSG version: 5.6.0.4 */
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/*
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** bf533_basiccrt.s generated on May 08, 2012 at 10:55:43.
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**
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** Copyright (C) 2000-2008 Analog Devices Inc., All Rights Reserved.
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** This contains Analog Devices Background IP and Development IP as
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** defined in the ADI/Intel Collaboration Agreement.
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**
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** This file is generated automatically based upon the options selected
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** in the Startup Code Wizard. Changes to the startup configuration
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** should be made by changing the appropriate options rather than
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** editing this file. Additional user code to be executed before calling
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** main can be inserted between the labels .start_of_user_code1 and
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** .end_of_user_code1 or .start_of_user_code2 and .end_of_user_code2.
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** This code is preserved if the CRT is re-generated.
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**
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** Configuration:-
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** product_name: VisualDSP++ 5.0 Update 6
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** processor: ADSP-BF533
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** si_revision: automatic
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** cplb_init: true
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** cplb_ctrl: (
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** CPLB_ENABLE_ICACHE
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** CPLB_ENABLE_ICPLBS
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** )
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** mem_init: false
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** device_init: true
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** init_regs: false
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** zero_return_regs: false
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** use_profiling: false
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** use_vdk: false
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** set_clock_and_power: false
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**
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*/
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/////////////////////////////////////////////////////////////////
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// blackfin-edinburgh-core
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#include <sys/platform.h>
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#include <sys/anomaly_macros_rtl.h>
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/////////////////////////////////////////////////////////////////
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// standard
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#define IVBh (EVT0 >> 16)
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#define IVBl (EVT0 & 0xFFFF)
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#define UNASSIGNED_VAL 0x8181
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#define INTERRUPT_BITS 0x400 // just IVG15
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#define SYSCFG_VALUE 0x30
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.section/DOUBLEANY program;
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.file_attr requiredForROMBoot;
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.align 2;
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start:
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/*$VDSG<insert-code-very-beginning> */
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.start_of_user_code_very_beginning:
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// Insert additional code to be executed before any other Startup Code here.
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// This code is preserved if the CRT is re-generated.
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.end_of_user_code_very_beginning:
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/*$VDSG<insert-code-very-beginning> */
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/////////////////////////////////////////////////////////////////
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// blackfin-edinburgh-core
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#if WA_05000109
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// Avoid Anomaly 05-00-0109
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R1 = SYSCFG_VALUE;
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SYSCFG = R1;
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#endif
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/////////////////////////////////////////////////////////////////
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// standard
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#if WA_05000229
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// Avoid Anomaly 05-00-0229: DMA5_CONFIG and SPI_CTL not cleared on reset.
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R1 = 0x400;
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#if defined(__ADSPBF538__) || defined(__ADSPBF539__)
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P0.L = SPI0_CTL & 0xFFFF;
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P0.H = SPI0_CTL >> 16;
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W[P0] = R1.L;
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#else
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P0.L = SPI_CTL & 0xFFFF;
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P0.H = SPI_CTL >> 16;
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W[P0] = R1.L;
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#endif
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P0.L = DMA5_CONFIG & 0xFFFF;
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P0.H = DMA5_CONFIG >> 16;
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R1 = 0;
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W[P0] = R1.L;
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#endif
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// Clear loop counters to disable hardware loops
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R7 = 0;
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LC0 = R7;
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LC1 = R7;
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// Clear the DAG Length regs, to force linear addressing
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L0 = R7;
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L1 = R7;
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L2 = R7;
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L3 = R7;
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// Clear ITEST_COMMAND and DTEST_COMMAND registers
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I0.L = (ITEST_COMMAND & 0xFFFF);
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I0.H = (ITEST_COMMAND >> 16);
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I1.L = (DTEST_COMMAND & 0xFFFF);
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I1.H = (DTEST_COMMAND >> 16);
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[I0] = R7;
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[I1] = R7;
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CSYNC;
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// Initialise the Event Vector table.
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P0.H = IVBh;
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P0.L = IVBl;
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// Install __unknown_exception_occurred in EVT so that
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// there is defined behaviour.
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P0 += 2*4; // Skip Emulation and Reset
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P1 = 13;
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R1.L = __unknown_exception_occurred;
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R1.H = __unknown_exception_occurred;
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LSETUP (.ivt,.ivt) LC0 = P1;
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.ivt: [P0++] = R1;
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// Set IVG15's handler to be the start of the mode-change
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// code. Then, before we return from the Reset back to user
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// mode, we'll raise IVG15. This will mean we stay in supervisor
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// mode, and continue from the mode-change point, but at a
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// much lower priority.
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P1.H = supervisor_mode;
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P1.L = supervisor_mode;
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[P0] = P1;
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/////////////////////////////////////////////////////////////////
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// cplb-handler
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#include "cplb.h"
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P1.H = _cplb_hdr;
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P1.L = _cplb_hdr;
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[P0-48] = P1; // write exception handler
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.extern _cplb_hdr;
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/////////////////////////////////////////////////////////////////
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// standard
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// Initialise the stack.
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// Note: this points just past the end of the section.
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// First write should be with [--SP].
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SP.L=ldf_stack_end;
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SP.H=ldf_stack_end;
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usp = sp;
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// We're still in supervisor mode at the moment, so the FP
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// needs to point to the supervisor stack.
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FP = SP;
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// Make space for incoming "parameters" for functions
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// we call from here:
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SP += -12;
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R0 = INTERRUPT_BITS;
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R0 <<= 5; // Bits 0-4 not settable.
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CALL.X __install_default_handlers;
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R1 = SYSCFG;
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R4 = R0; // Save modified list
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BITSET(R1,1);
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SYSCFG = R1; // Enable the cycle counter
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/////////////////////////////////////////////////////////////////
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// blackfin-edinburgh-core
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#if WA_05000137
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// Avoid Anomaly 02-00-0137
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// Set the port preferences of DAG0 and DAG1 to be
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// different; this gives better performance when
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// performing daul-dag operations on SDRAM.
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P0.L = DMEM_CONTROL & 0xFFFF;
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P0.H = DMEM_CONTROL >> 16;
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R0 = [P0];
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BITSET(R0, 12);
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BITCLR(R0, 13);
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[P0] = R0;
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CSYNC;
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#endif
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/*$VDSG<insert-code-early-startup> */
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.start_of_user_code1:
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// Insert additional code to be executed before main here.
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// This code is preserved if the CRT is re-generated.
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.end_of_user_code1:
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/*$VDSG<insert-code-early-startup> */
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/////////////////////////////////////////////////////////////////
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// cplb-init
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// initialise the CPLBs if they're needed. This was not possible
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// before we set up the stacks.
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R0 = 81; // cplb_ctrl = 81
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CALL.X _cplb_init;
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.extern _cplb_init;
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.type _cplb_init,STT_FUNC;
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.section/DOUBLEANY data1;
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___cplb_ctrl:
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.align 4;
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.byte4=81;
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.global ___cplb_ctrl;
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.type ___cplb_ctrl,STT_OBJECT;
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.section/DOUBLEANY program;
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.align 2;
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/////////////////////////////////////////////////////////////////
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// standard
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// Enable interrupts
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STI R4; // Using the mask from default handlers
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RAISE 15;
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// Move the processor into user mode.
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P0.L=still_interrupt_in_ipend;
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P0.H=still_interrupt_in_ipend;
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RETI=P0;
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NOP; // Purely to prevent a stall warning
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still_interrupt_in_ipend:
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// execute RTI until we've `finished` servicing all
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// interrupts of priority higher than IVG15. Normally one
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// would expect to only have the reset interrupt in IPEND
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// being serviced, but occasionally when debugging this may
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// not be the case - if restart is hit when servicing an
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// interrupt.
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//
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// When we clear all bits from IPEND, we'll enter user mode,
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// then we'll automatically jump to supervisor_mode to start
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// servicing IVG15 (which we will 'service' for the whole
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// program, so that the program is in supervisor mode.
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// Need to do this to 'finish' servicing the reset interupt.
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RTI;
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supervisor_mode:
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[--SP] = RETI; // re-enables the interrupt system
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R0.L = UNASSIGNED_VAL;
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R0.H = UNASSIGNED_VAL;
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// Push a RETS and Old FP onto the stack, for sanity.
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[--SP]=R0;
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[--SP]=R0;
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// Make sure the FP is sensible.
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FP = SP;
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// Leave space for incoming "parameters"
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SP += -12;
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/*$VDSG<insert-code-before-device-initialization> */
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.start_of_user_code2:
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// Insert additional code to be executed before device initialization here.
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// This code is preserved if the CRT is re-generated.
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.end_of_user_code2:
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/*$VDSG<insert-code-before-device-initialization> */
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/////////////////////////////////////////////////////////////////
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// device-initialization
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// initialise the devices known about for stdio.
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CALL.X _init_devtab;
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.extern _init_devtab;
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.type _init_devtab,STT_FUNC;
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/////////////////////////////////////////////////////////////////
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// cplusplus
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CALL.X ___ctorloop; // run global scope C++ constructors
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.extern ___ctorloop;
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.type ___ctorloop,STT_FUNC;
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/*$VDSG<insert-code-before-main-entry> */
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.start_of_user_code3:
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// Insert additional code to be executed before main here.
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// This code is preserved if the CRT is re-generated.
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.end_of_user_code3:
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/*$VDSG<insert-code-before-main-entry> */
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/////////////////////////////////////////////////////////////////
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// get-args
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// Read command-line arguments.
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CALL.X __getargv;
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r1.l=__Argv;
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r1.h=__Argv;
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.extern __getargv;
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.type __getargv,STT_FUNC;
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.extern __Argv;
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.type __Argv,STT_OBJECT;
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/////////////////////////////////////////////////////////////////
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// standard
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// Call the application program.
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CALL.X _main;
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/////////////////////////////////////////////////////////////////
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// call-exit
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CALL.X _exit; // passing in main's return value
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.extern _exit;
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.type _exit,STT_FUNC;
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/////////////////////////////////////////////////////////////////
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// standard
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.start.end: // Required by the linker to know the size of the routine
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// that is needed for absolute placement.
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.global start;
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.type start,STT_FUNC;
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.global .start.end;
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.type .start.end,STT_FUNC;
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.extern _main;
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.type _main,STT_FUNC;
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.extern ldf_stack_end;
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.extern __unknown_exception_occurred;
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.type __unknown_exception_occurred,STT_FUNC;
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.extern __install_default_handlers;
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.type __install_default_handlers,STT_FUNC;
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/////////////////////////////////////////////////////////////////
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// cplusplus
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.section/DOUBLEANY ctor;
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.align 4;
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___ctor_table:
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.byte4=0;
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.global ___ctor_table;
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.type ___ctor_table,STT_OBJECT;
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.section/DOUBLEANY .gdt;
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.align 4;
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___eh_gdt:
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.global ___eh_gdt;
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.byte4=0;
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.type ___eh_gdt,STT_OBJECT;
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.section/DOUBLEANY .frt;
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.align 4;
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___eh_frt:
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.global ___eh_frt;
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.byte4=0;
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.type ___eh_frt,STT_OBJECT;
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