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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [mips/] [jmr3904/] [v2_0/] [src/] [plf_misc.c] - Rev 307
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//========================================================================== // // plf_misc.c // // HAL platform miscellaneous functions // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): nickg // Contributors: nickg, jlarmour // Date: 1999-01-21 // Purpose: HAL miscellaneous functions // Description: This file contains miscellaneous functions provided by the // HAL. // //####DESCRIPTIONEND#### // //========================================================================*/ #include <pkgconf/hal.h> #include <cyg/infra/cyg_type.h> // Base types #include <cyg/infra/cyg_trac.h> // tracing macros #include <cyg/infra/cyg_ass.h> // assertion macros #include <cyg/hal/hal_arch.h> // architectural definitions #include <cyg/hal/hal_intr.h> // Interrupt handling #include <cyg/hal/hal_cache.h> // Cache handling /*------------------------------------------------------------------------*/ extern void patch_dbg_syscalls(void * vector); /*------------------------------------------------------------------------*/ void hal_platform_init(void) { HAL_ICACHE_INVALIDATE_ALL(); HAL_ICACHE_ENABLE(); HAL_DCACHE_INVALIDATE_ALL(); HAL_DCACHE_ENABLE(); #if !defined(CYGHWR_HAL_MIPS_TX39_JMR3904_ENABLE_TOE) HAL_TX39_DEBUG_TOE_DISABLE(); #else HAL_TX39_DEBUG_TOE_ENABLE(); #endif #if defined(CYGFUN_HAL_COMMON_KERNEL_SUPPORT) && \ defined(CYGSEM_HAL_USE_ROM_MONITOR_CygMon) { patch_dbg_syscalls( (void *)(&hal_vsr_table[0]) ); } #endif } /*------------------------------------------------------------------------*/ /* Functions to support the detection and execution of a user provoked */ /* program break. These are usually called from interrupt routines. */ cyg_bool cyg_hal_is_break(char *buf, int size) { while( size ) if( buf[--size] == 0x03 ) return true; return false; } void cyg_hal_user_break( CYG_ADDRWORD *regs ) { #if defined(CYGSEM_HAL_USE_ROM_MONITOR_CygMon) // The following code should be at the very start of this function so // that it can access the RA register before it is saved and reused. register CYG_WORD32 ra; asm volatile ( "move %0,$31;" : "=r" (ra) ); { typedef void install_bpt_fn(void *epc); CYG_WORD32 pc; HAL_SavedRegisters *sreg = (HAL_SavedRegisters *)regs; install_bpt_fn *ibp = (install_bpt_fn *)hal_vsr_table[35]; if( regs == NULL ) pc = ra; else pc = sreg->pc; if( ibp != NULL ) ibp((void *)pc); } #elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS) { extern void breakpoint(void); breakpoint(); } #else HAL_BREAKPOINT(breakinst); #endif } /*------------------------------------------------------------------------*/ /* Control C ISR support */ #if defined(CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT) #define DIAG_BASE 0xfffff300 #define DIAG_SLCR (DIAG_BASE+0x00) #define DIAG_SLSR (DIAG_BASE+0x04) #define DIAG_SLDICR (DIAG_BASE+0x08) #define DIAG_SLDISR (DIAG_BASE+0x0C) #define DIAG_SFCR (DIAG_BASE+0x10) #define DIAG_SBRG (DIAG_BASE+0x14) #define DIAG_TFIFO (DIAG_BASE+0x20) #define DIAG_RFIFO (DIAG_BASE+0x30) #define BRG_T0 0x0000 #define BRG_T2 0x0100 #define BRG_T4 0x0200 #define BRG_T5 0x0300 struct Hal_SavedRegisters *hal_saved_interrupt_state; void hal_ctrlc_isr_init(void) { CYG_WORD16 dicr; HAL_READ_UINT16( DIAG_SLDICR , dicr ); dicr = 0x0001; HAL_WRITE_UINT16( DIAG_SLDICR , dicr ); HAL_INTERRUPT_SET_LEVEL( CYGHWR_HAL_GDB_PORT_VECTOR, 1 ); HAL_INTERRUPT_UNMASK( CYGHWR_HAL_GDB_PORT_VECTOR ); } cyg_uint32 hal_ctrlc_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data) { char c; CYG_WORD16 disr; HAL_INTERRUPT_ACKNOWLEDGE( CYGHWR_HAL_GDB_PORT_VECTOR ); HAL_READ_UINT16( DIAG_SLDISR , disr ); if( disr & 0x0001 ) { disr = disr & ~0x0001; HAL_READ_UINT8( DIAG_RFIFO, c ); HAL_WRITE_UINT16( DIAG_SLDISR , disr ); if( cyg_hal_is_break( &c , 1 ) ) cyg_hal_user_break( (CYG_ADDRWORD *)hal_saved_interrupt_state ); } return 2; } #endif /*------------------------------------------------------------------------*/ /* End of plf_misc.c */
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