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Diffstat (limited to 'cfe/cfe/main/cfe_boot.c')
| -rw-r--r-- | cfe/cfe/main/cfe_boot.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/cfe/cfe/main/cfe_boot.c b/cfe/cfe/main/cfe_boot.c new file mode 100644 index 0000000..12fecaa --- /dev/null +++ b/cfe/cfe/main/cfe_boot.c @@ -0,0 +1,248 @@ +/* ********************************************************************* + * Broadcom Common Firmware Environment (CFE) + * + * OS bootstrap File: cfe_boot.c + * + * This module handles OS bootstrap stuff + * + * Author: Mitch Lichtenberg (mpl@broadcom.com) + * + ********************************************************************* + * + * Copyright 2000,2001,2002,2003 + * Broadcom Corporation. All rights reserved. + * + * This software is furnished under license and may be used and + * copied only in accordance with the following terms and + * conditions. Subject to these conditions, you may download, + * copy, install, use, modify and distribute modified or unmodified + * copies of this software in source and/or binary form. No title + * or ownership is transferred hereby. + * + * 1) Any source code used, modified or distributed must reproduce + * and retain this copyright notice and list of conditions + * as they appear in the source file. + * + * 2) No right is granted to use any trade name, trademark, or + * logo of Broadcom Corporation. The "Broadcom Corporation" + * name may not be used to endorse or promote products derived + * from this software without the prior written permission of + * Broadcom Corporation. + * + * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED + * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR + * PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT + * SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN + * PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + ********************************************************************* */ + + +#include "lib_types.h" +#include "lib_string.h" +#include "lib_queue.h" +#include "lib_malloc.h" +#include "lib_printf.h" + +#include "cfe_iocb.h" +#include "cfe_device.h" +#include "cfe_console.h" +#include "cfe_devfuncs.h" +#include "cfe_timer.h" + +#include "cfe_error.h" + +#include "env_subr.h" +#include "cfe.h" + +#include "net_ebuf.h" +#include "net_ether.h" + +#include "net_api.h" +#include "cfe_fileops.h" +#include "cfe_bootblock.h" +#include "bsp_config.h" +#include "cfe_boot.h" + +#include "cfe_loader.h" + +#if CFG_UI +extern int ui_docommands(char *buf); +#endif + +/* ********************************************************************* + * data + ********************************************************************* */ + +const char *bootvar_device = "BOOT_DEVICE"; +const char *bootvar_file = "BOOT_FILE"; +const char *bootvar_flags = "BOOT_FLAGS"; + +cfe_loadargs_t cfe_loadargs; + +/* ********************************************************************* + * splitpath(path,devname,filename) + * + * Split a path name (a boot path, in the form device:filename) + * into its parts + * + * Input parameters: + * path - pointer to path string + * devname - receives pointer to device name + * filename - receives pointer to file name + * + * Return value: + * nothing + ********************************************************************* */ + +void splitpath(char *path,char **devname,char **filename) +{ + char *x; + + *devname = NULL; + *filename = NULL; + + x = strchr(path,':'); + + if (!x) { + *devname = NULL; /* path consists of device name */ + *filename = path; + } + else { + *x++ = '\0'; /* have both device and file name */ + *filename = x; + *devname = path; + } +} + + +/* ********************************************************************* + * cfe_go(la) + * + * Starts a previously loaded program. cfe_loadargs.la_entrypt + * must be set to the entry point of the program to be started + * + * Input parameters: + * la - loader args + * + * Return value: + * does not return + ********************************************************************* */ + +void cfe_go(cfe_loadargs_t *la) +{ + if (la->la_entrypt == 0) { + xprintf("No program has been loaded.\n"); + return; + } + +#if CFG_NETWORK + if (!(la->la_flags & LOADFLG_NOCLOSE)) { + if (net_getparam(NET_DEVNAME)) { + xprintf("Closing network.\n"); + net_uninit(); + } + } +#endif + + xprintf("Starting program at 0x%p\n",la->la_entrypt); + + cfe_start(la->la_entrypt); +} + + +/* ********************************************************************* + * cfe_boot(la) + * + * Bootstrap the system. + * + * Input parameters: + * la - loader arguments + * + * Return value: + * error, or does not return + ********************************************************************* */ +int cfe_boot(char *ldrname,cfe_loadargs_t *la) +{ + int res; + + la->la_entrypt = 0; + + if (la->la_flags & LOADFLG_NOISY) { + xprintf("Loading: "); + } + + res = cfe_load_program(ldrname,la); + + if (res < 0) { + if (la->la_flags & LOADFLG_NOISY) { + xprintf("Failed.\n"); + } + return res; + } + + /* + * Special case: If loading a batch file, just do the commands here + * and return. For batch files we don't want to set up the + * environment variables. + */ + + if (la->la_flags & LOADFLG_BATCH) { +#if CFG_UI + ui_docommands((char *) la->la_entrypt); +#endif + return 0; + } + + /* + * Otherwise set up for running a real program. + */ + + if (la->la_flags & LOADFLG_NOISY) { + xprintf("Entry at 0x%p\n",la->la_entrypt); + } + + /* + * Set up the environment variables for the bootstrap + */ + + if (la->la_device) { + env_setenv(bootvar_device,la->la_device,ENV_FLG_BUILTIN); + } + else { + env_delenv(bootvar_device); + } + + if (la->la_filename) { + env_setenv(bootvar_file,la->la_filename,ENV_FLG_BUILTIN); + } + else { + env_delenv(bootvar_file); + } + + if (la->la_options) { + env_setenv(bootvar_flags,la->la_options,ENV_FLG_BUILTIN); + } + else { + env_delenv(bootvar_flags); + } + + /* + * Banzai! Run the program. + */ + + if ((la->la_flags & LOADFLG_EXECUTE) && + (la->la_entrypt != 0)) { + cfe_go(la); + } + + return 0; +} + |