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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [powerpc/] [mbx/] [v2_0/] [src/] [hal_diag.c] - Rev 307
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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): hmt // Contributors:hmt, jskov // Date: 1999-06-08 // Purpose: HAL diagnostic output // Description: Implementations of HAL diagnostic output support. // //####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_io.h> // IO macros #include <cyg/hal/hal_diag.h> #include <cyg/hal/hal_intr.h> // Interrupt macros #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS) #include <cyg/hal/hal_stub.h> // hal_output_gdb_string #endif #include <cyg/hal/ppc_regs.h> #include <cyg/hal/quicc/quicc_smc1.h> void cyg_hal_plf_comms_init(void) { static int initialized = 0; if (initialized) return; initialized = 1; cyg_hal_plf_serial_init(); } #if !defined(CYGSEM_HAL_VIRTUAL_VECTOR_DIAG) //----------------------------------------------------------------------------- // Select default diag channel to use //#define CYG_KERNEL_DIAG_ROMART //#define CYG_KERNEL_DIAG_SERIAL #if !defined(CYG_KERNEL_DIAG_SERIAL) #define CYG_KERNEL_DIAG_SERIAL #endif #ifdef CYGDBG_DIAG_BUF // Keep diag messages in a buffer for later [re]display int enable_diag_uart = 1; int enable_diag_buf = 1; static char diag_buf[40960*4]; static int diag_buf_ptr = 0; static void diag_putc(char c) { if (enable_diag_buf) { diag_buf[diag_buf_ptr++] = c; if (diag_buf_ptr == sizeof(diag_buf)) diag_buf_ptr--; } } void dump_diag_buf(int start, int len) { int i; enable_diag_uart = 1; enable_diag_buf = 0; if (len == 0) len = diag_buf_ptr; diag_printf("\nDiag buf\n"); for (i = start; i < len; i++) { hal_diag_write_char(diag_buf[i]); } } #endif // CYGDBG_DIAG_BUF //----------------------------------------------------------------------------- // MBX board specific serial output; using GDB protocol by default: #if defined(CYG_KERNEL_DIAG_SERIAL) EPPC *eppc; void hal_diag_init(void) { static int init = 0; if (init) return; init++; // hardwired base eppc = eppc_base(); // init the actual serial port cyg_hal_plf_serial_init_channel(); #ifdef CYGSEM_HAL_DIAG_MANGLER_GDB #ifndef CYG_HAL_STARTUP_ROM // We are talking to GDB; ack the "go" packet! cyg_hal_plf_serial_putc(eppc, '+'); #endif #endif } void hal_diag_write_char_serial( char c ) { unsigned long __state; HAL_DISABLE_INTERRUPTS(__state); cyg_hal_plf_serial_putc(eppc, c); HAL_RESTORE_INTERRUPTS(__state); } #if defined(CYG_HAL_STARTUP_ROM) || !defined(CYGDBG_HAL_DIAG_TO_DEBUG_CHAN) void hal_diag_write_char(char c) { #ifdef CYGDBG_DIAG_BUF diag_putc(c); if (!enable_diag_uart) return; #endif // CYGDBG_DIAG_BUF hal_diag_write_char_serial(c); } #else // RAM start so encode for GDB void hal_diag_write_char(char c) { static char line[100]; static int pos = 0; #ifdef CYGDBG_DIAG_BUF diag_putc(c); if (!enable_diag_uart) return; #endif // CYGDBG_DIAG_BUF // 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) { static char hex[] = "0123456789ABCDEF"; cyg_uint8 csum = 0; int i; hal_diag_write_char_serial('$'); hal_diag_write_char_serial('O'); csum += 'O'; for( i = 0; i < pos; i++ ) { char ch = line[i]; char h = hex[(ch>>4)&0xF]; char l = hex[ch&0xF]; hal_diag_write_char_serial(h); hal_diag_write_char_serial(l); csum += h; csum += l; } hal_diag_write_char_serial('#'); hal_diag_write_char_serial(hex[(csum>>4)&0xF]); hal_diag_write_char_serial(hex[csum&0xF]); #ifndef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT // only gobble characters if no interrupt handler to grab ^Cs // is installed (which is exclusive with device driver use) // Wait for the ACK character '+' from GDB here and handle // receiving a ^C instead. This is the reason for this clause // being a loop. c = cyg_hal_plf_serial_getc(eppc); if( c == '+' ) break; // a good acknowledge #if 0 if( c1 == 3 ) { // Ctrl-C: breakpoint. breakpoint(); break; } #endif // otherwise, loop round again #else break; #endif } 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 } } #endif // NOT def CYG_HAL_STARTUP_ROM void hal_diag_read_char(char *c) { *c = cyg_hal_plf_serial_getc(eppc); } #endif // CYG_KERNEL_DIAG_SERIAL #endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG // EOF hal_diag.c
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