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Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. In the case of some code where it is modular, we can extend that to also include files that are building basic support functionality but not related to loading or registering the final module; such files also have no need whatsoever for module.h The advantage in removing such instances is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h might have been the implicit source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each instance for the presence of either and replace/add as needed. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. Build coverage of all the mips defconfigs revealed the module.h header was masking a couple of implicit include instances, so we add the appropriate headers there. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Daney <david.daney@cavium.com> Cc: John Crispin <john@phrozen.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "Steven J. Hill" <steven.hill@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15131/ [james.hogan@imgtec.com: Preserve sort order where it already exists] Signed-off-by: James Hogan <james.hogan@imgtec.com>
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/*
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*
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* BRIEF MODULE DESCRIPTION
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* PROM library initialisation code, supports YAMON and U-Boot.
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*
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* Copyright 2000-2001, 2006, 2008 MontaVista Software Inc.
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* Author: MontaVista Software, Inc. <source@mvista.com>
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*
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* This file was derived from Carsten Langgaard's
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* arch/mips/mips-boards/xx files.
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*
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* Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <asm/bootinfo.h>
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int prom_argc;
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char **prom_argv;
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char **prom_envp;
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void __init prom_init_cmdline(void)
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{
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int i;
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for (i = 1; i < prom_argc; i++) {
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strlcat(arcs_cmdline, prom_argv[i], COMMAND_LINE_SIZE);
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if (i < (prom_argc - 1))
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strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
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}
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}
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char *prom_getenv(char *envname)
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{
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/*
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* Return a pointer to the given environment variable.
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* YAMON uses "name", "value" pairs, while U-Boot uses "name=value".
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*/
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char **env = prom_envp;
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int i = strlen(envname);
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int yamon = (*env && strchr(*env, '=') == NULL);
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while (*env) {
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if (yamon) {
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if (strcmp(envname, *env++) == 0)
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return *env;
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} else if (strncmp(envname, *env, i) == 0 && (*env)[i] == '=')
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return *env + i + 1;
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env++;
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}
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return NULL;
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}
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static inline unsigned char str2hexnum(unsigned char c)
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{
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if (c >= '0' && c <= '9')
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return c - '0';
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if (c >= 'a' && c <= 'f')
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return c - 'a' + 10;
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if (c >= 'A' && c <= 'F')
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return c - 'A' + 10;
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return 0; /* foo */
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}
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static inline void str2eaddr(unsigned char *ea, unsigned char *str)
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{
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int i;
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for (i = 0; i < 6; i++) {
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unsigned char num;
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if ((*str == '.') || (*str == ':'))
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str++;
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num = str2hexnum(*str++) << 4;
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num |= str2hexnum(*str++);
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ea[i] = num;
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}
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}
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int __init prom_get_ethernet_addr(char *ethernet_addr)
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{
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char *ethaddr_str;
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/* Check the environment variables first */
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ethaddr_str = prom_getenv("ethaddr");
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if (!ethaddr_str) {
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/* Check command line */
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ethaddr_str = strstr(arcs_cmdline, "ethaddr=");
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if (!ethaddr_str)
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return -1;
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ethaddr_str += strlen("ethaddr=");
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}
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str2eaddr(ethernet_addr, ethaddr_str);
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return 0;
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}
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void __init prom_free_prom_memory(void)
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{
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}
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