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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [sh/] [cq7750/] [v2_0/] [src/] [hal_diag.c] - Rev 578
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//============================================================================= // // hal_diag.c // // HAL diagnostic output code // //============================================================================= //####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, jskov // Contributors: nickg, jskov // Date: 1999-03-23 // Purpose: HAL diagnostic output // Description: Implementations of HAL diagnostic output support. // //####DESCRIPTIONEND#### // //============================================================================= #include <pkgconf/hal.h> #include <cyg/hal/hal_diag.h> // our header. #include <cyg/infra/cyg_type.h> // base types, externC #include <cyg/hal/hal_io.h> // IO macros #include <cyg/hal/hal_if.h> // calling interface API #include <cyg/hal/hal_intr.h> // Interrupt macros #include <cyg/hal/sh4_scif.h> // driver API #include <cyg/hal/hal_misc.h> // Helper functions #define SCI_BASE ((cyg_uint8*)0xffe80000) //----------------------------------------------------------------------------- void cyg_hal_plf_comms_init(void) { static int initialized = 0; if (initialized) return; initialized = 1; cyg_hal_plf_scif_init(0, 0, CYGNUM_HAL_INTERRUPT_SCIF_RXI, SCI_BASE); } //============================================================================= // Led control //============================================================================= #define LED 0xb4000000 void hal_diag_led_on( void ) { HAL_WRITE_UINT8(LED, 0x18); } void hal_diag_led_off( void ) { HAL_WRITE_UINT8(LED, 0); } //============================================================================= // Compatibility with older stubs //============================================================================= #ifndef CYGSEM_HAL_VIRTUAL_VECTOR_DIAG #define CYGPRI_HAL_SH_SH4_SCIF_PRIVATE #include <cyg/hal/sh4_scif.h> // driver API static channel_data_t channel = { (cyg_uint8*)SCI_BASE, 0, 0}; #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS) #include <cyg/hal/hal_stub.h> // hal_output_gdb_string #endif #if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs) #define CYG_HAL_DIAG_GDB #elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS) #define CYG_HAL_DIAG_GDB #endif //----------------------------------------------------------------------------- void hal_diag_init(void) { cyg_hal_plf_scif_init_channel(&channel); } void hal_diag_write_char_serial( char c ) { cyg_hal_plf_scif_putc(&channel, c); } void hal_diag_read_char(char *c) { *c = (char) cyg_hal_plf_scif_getc(&channel); } // Packet function void hal_diag_write_char(char c) { #ifdef CYG_HAL_DIAG_GDB static char line[100]; static int pos = 0; // No need to send CRs if( c == '\r' ) return; line[pos++] = c; if( c == '\n' || pos == sizeof(line) ) { CYG_INTERRUPT_STATE old; // Disable interrupts. This prevents GDB trying to interrupt us // while we are in the middle of sending a packet. The serial // receive interrupt will be seen when we re-enable interrupts // later. #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old); #else HAL_DISABLE_INTERRUPTS(old); #endif while(1) { char c1; static char hex[] = "0123456789ABCDEF"; cyg_uint8 csum = 0; int i; cyg_hal_plf_scif_putc(&channel, '$'); cyg_hal_plf_scif_putc(&channel, 'O'); csum += 'O'; for( i = 0; i < pos; i++ ) { char ch = line[i]; char h = hex[(ch>>4)&0xF]; char l = hex[ch&0xF]; cyg_hal_plf_scif_putc(&channel, h); cyg_hal_plf_scif_putc(&channel, l); csum += h; csum += l; } cyg_hal_plf_scif_putc(&channel, '#'); cyg_hal_plf_scif_putc(&channel, hex[(csum>>4)&0xF]); cyg_hal_plf_scif_putc(&channel, hex[csum&0xF]); // Wait for the ACK character '+' from GDB here and handle // receiving a ^C instead. c1 = (char) cyg_hal_plf_scif_getc(&channel); if( c1 == '+' ) break; // a good acknowledge // Check for user break. if( cyg_hal_is_break( &c1, 1 ) ) cyg_hal_user_break( NULL ); // otherwise, loop round again } pos = 0; // And re-enable interrupts #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old); #else HAL_RESTORE_INTERRUPTS(old); #endif } #else // CYG_HAL_DIAG_GDB cyg_hal_plf_scif_putc(&channel, c); #endif } #endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG //----------------------------------------------------------------------------- // End of hal_diag.c
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