From c65d94f7d0e0c511794ea1f42ddf01e66f97e236 Mon Sep 17 00:00:00 2001 From: Zachary T Welch Date: Thu, 3 Dec 2009 17:14:07 -0800 Subject: [PATCH] add flash/nor/core.[ch] The newly moved flash TCL routines access the internals of the module too much. Fix the layering issues by adding new core NOR flash APIs: : - flash_driver_find_by_name() - self-descriptive : - flash_bank_add() - encapsulates adding banks to bank list - flash_bank_list() - encapsulates retreiving bank list This allows the externs in flash/nor/imp.h to be removed, and these mechanisms may now be re-used by other flash module code. --- src/flash/nor/Makefile.am | 1 + src/flash/nor/core.c | 65 +++++++++++++++++++++++++ src/flash/nor/core.h | 31 ++++++++++++ src/flash/nor/imp.h | 15 ++++-- src/flash/nor/tcl.c | 99 ++++++++++++++++----------------------- 5 files changed, 149 insertions(+), 62 deletions(-) create mode 100644 src/flash/nor/core.c create mode 100644 src/flash/nor/core.h diff --git a/src/flash/nor/Makefile.am b/src/flash/nor/Makefile.am index ed9ebb30..499ebfa2 100644 --- a/src/flash/nor/Makefile.am +++ b/src/flash/nor/Makefile.am @@ -2,6 +2,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/src noinst_LTLIBRARIES = libocdflashnor.la libocdflashnor_la_SOURCES = \ + core.c \ tcl.c \ $(NOR_DRIVERS) diff --git a/src/flash/nor/core.c b/src/flash/nor/core.c new file mode 100644 index 00000000..a69c3f49 --- /dev/null +++ b/src/flash/nor/core.c @@ -0,0 +1,65 @@ +/*************************************************************************** + * Copyright (C) 2009 Zachary T Welch * + * * + * This program 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 of the License, or * + * (at your option) any later version. * + * * + * This program 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 this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +#ifdef HAVE_CONFIG_H +#include +#endif +#include +#include + +// in flash.c, to be moved here +extern struct flash_driver *flash_drivers[]; +extern struct flash_bank *flash_banks; + +struct flash_driver *flash_driver_find_by_name(const char *name) +{ + for (unsigned i = 0; flash_drivers[i]; i++) + { + if (strcmp(name, flash_drivers[i]->name) == 0) + return flash_drivers[i]; + } + return NULL; +} + +void flash_bank_add(struct flash_bank *bank) +{ + /* put flash bank in linked list */ + unsigned bank_num = 0; + if (flash_banks) + { + /* find last flash bank */ + struct flash_bank *p = flash_banks; + while (NULL != p->next) + { + bank_num += 1; + p = p->next; + } + p->next = bank; + bank_num += 1; + } + else + flash_banks = bank; + + bank->bank_number = bank_num; +} + +struct flash_bank *flash_bank_list(void) +{ + return flash_banks; +} diff --git a/src/flash/nor/core.h b/src/flash/nor/core.h new file mode 100644 index 00000000..0c6a804f --- /dev/null +++ b/src/flash/nor/core.h @@ -0,0 +1,31 @@ +/*************************************************************************** + * Copyright (C) 2009 Zachary T Welch * + * * + * This program 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 of the License, or * + * (at your option) any later version. * + * * + * This program 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 this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ +#ifndef FLASH_NOR_CORE_H +#define FLASH_NOR_CORE_H + +#include + +/** + * Find a NOR flash driver by its name. + * @param name The name of the requested driver. + * @returns The flash_driver called @c name, or NULL if not found. + */ +struct flash_driver *flash_driver_find_by_name(const char *name); + +#endif // FLASH_NOR_CORE_H diff --git a/src/flash/nor/imp.h b/src/flash/nor/imp.h index 29d7f7eb..23ac476e 100644 --- a/src/flash/nor/imp.h +++ b/src/flash/nor/imp.h @@ -19,9 +19,18 @@ #ifndef FLASH_NOR_IMP_H #define FLASH_NOR_IMP_H -#include +// this is an internal header +#include "core.h" -extern struct flash_driver *flash_drivers[]; -extern struct flash_bank *flash_banks; +/** + * Adds a new NOR bank to the global list of banks. + * @params bank The bank that should be added. + */ +void flash_bank_add(struct flash_bank *bank); + +/** + * @return The first bank in the global list. + */ +struct flash_bank *flash_bank_list(void); #endif // FLASH_NOR_IMP_H diff --git a/src/flash/nor/tcl.c b/src/flash/nor/tcl.c index 8c13241d..b00516d9 100644 --- a/src/flash/nor/tcl.c +++ b/src/flash/nor/tcl.c @@ -44,84 +44,65 @@ COMMAND_HANDLER(handle_flash_bank_command) } const char *driver_name = CMD_ARGV[0]; - for (unsigned i = 0; flash_drivers[i]; i++) + struct flash_driver *driver = flash_driver_find_by_name(driver_name); + if (NULL == driver) { - if (strcmp(driver_name, flash_drivers[i]->name) != 0) - continue; - - /* register flash specific commands */ - if (NULL != flash_drivers[i]->commands) - { - int retval = register_commands(CMD_CTX, NULL, - flash_drivers[i]->commands); - if (ERROR_OK != retval) - { - LOG_ERROR("couldn't register '%s' commands", - driver_name); - return ERROR_FAIL; - } - } + /* no matching flash driver found */ + LOG_ERROR("flash driver '%s' not found", driver_name); + return ERROR_FAIL; + } - struct flash_bank *p, *c; - c = malloc(sizeof(struct flash_bank)); - c->name = strdup(bank_name); - c->target = target; - c->driver = flash_drivers[i]; - c->driver_priv = NULL; - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], c->base); - COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], c->size); - COMMAND_PARSE_NUMBER(int, CMD_ARGV[3], c->chip_width); - COMMAND_PARSE_NUMBER(int, CMD_ARGV[4], c->bus_width); - c->num_sectors = 0; - c->sectors = NULL; - c->next = NULL; - - int retval; - retval = CALL_COMMAND_HANDLER(flash_drivers[i]->flash_bank_command, c); + /* register flash specific commands */ + if (NULL != driver->commands) + { + int retval = register_commands(CMD_CTX, NULL, + driver->commands); if (ERROR_OK != retval) { - LOG_ERROR("'%s' driver rejected flash bank at 0x%8.8" PRIx32, - driver_name, c->base); - free(c); - return retval; - } - - /* put flash bank in linked list */ - if (flash_banks) - { - int bank_num = 0; - /* find last flash bank */ - for (p = flash_banks; p && p->next; p = p->next) bank_num++; - if (p) - p->next = c; - c->bank_number = bank_num + 1; - } - else - { - flash_banks = c; - c->bank_number = 0; + LOG_ERROR("couldn't register '%s' commands", + driver_name); + return ERROR_FAIL; } + } - return ERROR_OK; + struct flash_bank *c = malloc(sizeof(*c)); + c->name = strdup(bank_name); + c->target = target; + c->driver = driver; + c->driver_priv = NULL; + COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], c->base); + COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], c->size); + COMMAND_PARSE_NUMBER(int, CMD_ARGV[3], c->chip_width); + COMMAND_PARSE_NUMBER(int, CMD_ARGV[4], c->bus_width); + c->num_sectors = 0; + c->sectors = NULL; + c->next = NULL; + + int retval; + retval = CALL_COMMAND_HANDLER(driver->flash_bank_command, c); + if (ERROR_OK != retval) + { + LOG_ERROR("'%s' driver rejected flash bank at 0x%8.8" PRIx32, + driver_name, c->base); + free(c); + return retval; } - /* no matching flash driver found */ - LOG_ERROR("flash driver '%s' not found", driver_name); - return ERROR_FAIL; + return ERROR_OK; + } static int jim_flash_banks(Jim_Interp *interp, int argc, Jim_Obj *const *argv) { - struct flash_bank *p; - if (argc != 1) { Jim_WrongNumArgs(interp, 1, argv, "no arguments to flash_banks command"); return JIM_ERR; } Jim_Obj *list = Jim_NewListObj(interp, NULL, 0); - for (p = flash_banks; p; p = p->next) + + for (struct flash_bank *p = flash_bank_list(); p; p = p->next) { Jim_Obj *elem = Jim_NewListObj(interp, NULL, 0); -- 2.39.5