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26dd3e4ff9
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>
504 lines
11 KiB
C
504 lines
11 KiB
C
/*
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* BRIEF MODULE DESCRIPTION
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* PROM library initialisation code, assuming a version of
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* pmon is the boot code.
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*
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* Copyright 2000,2001 MontaVista Software Inc.
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* Author: MontaVista Software, Inc.
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* ppopov@mvista.com or 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/export.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/interrupt.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <asm/addrspace.h>
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#include <asm/bootinfo.h>
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#include <asm-generic/sections.h>
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#include <asm/page.h>
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#include <msp_prom.h>
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#include <msp_regs.h>
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/* global PROM environment variables and pointers */
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int prom_argc;
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char **prom_argv, **prom_envp;
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int *prom_vec;
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/* debug flag */
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int init_debug = 1;
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/* memory blocks */
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struct prom_pmemblock mdesc[PROM_MAX_PMEMBLOCKS];
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/* default feature sets */
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static char msp_default_features[] =
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#if defined(CONFIG_PMC_MSP4200_EVAL) \
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|| defined(CONFIG_PMC_MSP4200_GW)
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"ERER";
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#elif defined(CONFIG_PMC_MSP7120_EVAL) \
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|| defined(CONFIG_PMC_MSP7120_GW)
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"EMEMSP";
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#elif defined(CONFIG_PMC_MSP7120_FPGA)
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"EMEM";
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#endif
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/* conversion functions */
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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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return 0; /* foo */
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}
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int str2eaddr(unsigned char *ea, unsigned char *str)
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{
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int index = 0;
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unsigned char num = 0;
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while (*str != '\0') {
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if ((*str == '.') || (*str == ':')) {
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ea[index++] = num;
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num = 0;
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str++;
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} else {
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num = num << 4;
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num |= str2hexnum(*str++);
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}
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}
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if (index == 5) {
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ea[index++] = num;
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return 0;
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} else
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return -1;
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}
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EXPORT_SYMBOL(str2eaddr);
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static inline unsigned long str2hex(unsigned char *str)
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{
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int value = 0;
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while (*str) {
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value = value << 4;
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value |= str2hexnum(*str++);
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}
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return value;
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}
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/* function to query the system information */
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const char *get_system_type(void)
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{
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#if defined(CONFIG_PMC_MSP4200_EVAL)
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return "PMC-Sierra MSP4200 Eval Board";
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#elif defined(CONFIG_PMC_MSP4200_GW)
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return "PMC-Sierra MSP4200 VoIP Gateway";
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#elif defined(CONFIG_PMC_MSP7120_EVAL)
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return "PMC-Sierra MSP7120 Eval Board";
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#elif defined(CONFIG_PMC_MSP7120_GW)
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return "PMC-Sierra MSP7120 Residential Gateway";
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#elif defined(CONFIG_PMC_MSP7120_FPGA)
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return "PMC-Sierra MSP7120 FPGA";
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#else
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#error "What is the type of *your* MSP?"
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#endif
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}
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int get_ethernet_addr(char *ethaddr_name, char *ethernet_addr)
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{
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char *ethaddr_str;
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ethaddr_str = prom_getenv(ethaddr_name);
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if (!ethaddr_str) {
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printk(KERN_WARNING "%s not set in boot prom\n", ethaddr_name);
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return -1;
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}
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if (str2eaddr(ethernet_addr, ethaddr_str) == -1) {
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printk(KERN_WARNING "%s badly formatted-<%s>\n",
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ethaddr_name, ethaddr_str);
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return -1;
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}
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if (init_debug > 1) {
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int i;
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printk(KERN_DEBUG "get_ethernet_addr: for %s ", ethaddr_name);
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for (i = 0; i < 5; i++)
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printk(KERN_DEBUG "%02x:",
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(unsigned char)*(ethernet_addr+i));
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printk(KERN_DEBUG "%02x\n", *(ethernet_addr+i));
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}
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return 0;
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}
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EXPORT_SYMBOL(get_ethernet_addr);
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static char *get_features(void)
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{
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char *feature = prom_getenv(FEATURES);
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if (feature == NULL) {
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/* default features based on MACHINE_TYPE */
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feature = msp_default_features;
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}
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return feature;
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}
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static char test_feature(char c)
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{
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char *feature = get_features();
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while (*feature) {
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if (*feature++ == c)
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return *feature;
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feature++;
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}
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return FEATURE_NOEXIST;
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}
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unsigned long get_deviceid(void)
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{
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char *deviceid = prom_getenv(DEVICEID);
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if (deviceid == NULL)
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return *DEV_ID_REG;
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else
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return str2hex(deviceid);
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}
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char identify_pci(void)
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{
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return test_feature(PCI_KEY);
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}
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EXPORT_SYMBOL(identify_pci);
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char identify_pcimux(void)
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{
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return test_feature(PCIMUX_KEY);
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}
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char identify_sec(void)
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{
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return test_feature(SEC_KEY);
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}
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EXPORT_SYMBOL(identify_sec);
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char identify_spad(void)
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{
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return test_feature(SPAD_KEY);
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}
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EXPORT_SYMBOL(identify_spad);
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char identify_tdm(void)
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{
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return test_feature(TDM_KEY);
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}
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EXPORT_SYMBOL(identify_tdm);
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char identify_zsp(void)
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{
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return test_feature(ZSP_KEY);
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}
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EXPORT_SYMBOL(identify_zsp);
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static char identify_enetfeature(char key, unsigned long interface_num)
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{
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char *feature = get_features();
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while (*feature) {
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if (*feature++ == key && interface_num-- == 0)
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return *feature;
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feature++;
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}
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return FEATURE_NOEXIST;
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}
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char identify_enet(unsigned long interface_num)
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{
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return identify_enetfeature(ENET_KEY, interface_num);
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}
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EXPORT_SYMBOL(identify_enet);
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char identify_enetTxD(unsigned long interface_num)
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{
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return identify_enetfeature(ENETTXD_KEY, interface_num);
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}
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EXPORT_SYMBOL(identify_enetTxD);
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unsigned long identify_family(void)
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{
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unsigned long deviceid;
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deviceid = get_deviceid();
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return deviceid & CPU_DEVID_FAMILY;
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}
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EXPORT_SYMBOL(identify_family);
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unsigned long identify_revision(void)
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{
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unsigned long deviceid;
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deviceid = get_deviceid();
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return deviceid & CPU_DEVID_REVISION;
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}
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EXPORT_SYMBOL(identify_revision);
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/* PROM environment functions */
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char *prom_getenv(char *env_name)
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{
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/*
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* Return a pointer to the given environment variable. prom_envp
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* points to a null terminated array of pointers to variables.
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* Environment variables are stored in the form of "memsize=64"
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*/
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char **var = prom_envp;
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int i = strlen(env_name);
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while (*var) {
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if (strncmp(env_name, *var, i) == 0) {
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return *var + strlen(env_name) + 1;
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}
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var++;
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}
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return NULL;
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}
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/* PROM commandline functions */
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void __init prom_init_cmdline(void)
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{
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char *cp;
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int actr;
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actr = 1; /* Always ignore argv[0] */
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cp = &(arcs_cmdline[0]);
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while (actr < prom_argc) {
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strcpy(cp, prom_argv[actr]);
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cp += strlen(prom_argv[actr]);
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*cp++ = ' ';
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actr++;
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}
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if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
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--cp;
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*cp = '\0';
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}
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/* memory allocation functions */
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static int __init prom_memtype_classify(unsigned int type)
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{
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switch (type) {
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case yamon_free:
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return BOOT_MEM_RAM;
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case yamon_prom:
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return BOOT_MEM_ROM_DATA;
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default:
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return BOOT_MEM_RESERVED;
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}
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}
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void __init prom_meminit(void)
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{
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struct prom_pmemblock *p;
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p = prom_getmdesc();
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while (p->size) {
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long type;
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unsigned long base, size;
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type = prom_memtype_classify(p->type);
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base = p->base;
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size = p->size;
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add_memory_region(base, size, type);
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p++;
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}
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}
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void __init prom_free_prom_memory(void)
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{
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int argc;
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char **argv;
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char **envp;
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char *ptr;
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int len = 0;
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int i;
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unsigned long addr;
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/*
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* preserve environment variables and command line from pmon/bbload
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* first preserve the command line
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*/
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for (argc = 0; argc < prom_argc; argc++) {
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len += sizeof(char *); /* length of pointer */
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len += strlen(prom_argv[argc]) + 1; /* length of string */
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}
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len += sizeof(char *); /* plus length of null pointer */
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argv = kmalloc(len, GFP_KERNEL);
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ptr = (char *) &argv[prom_argc + 1]; /* strings follow array */
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for (argc = 0; argc < prom_argc; argc++) {
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argv[argc] = ptr;
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strcpy(ptr, prom_argv[argc]);
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ptr += strlen(prom_argv[argc]) + 1;
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}
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argv[prom_argc] = NULL; /* end array with null pointer */
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prom_argv = argv;
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/* next preserve the environment variables */
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len = 0;
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i = 0;
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for (envp = prom_envp; *envp != NULL; envp++) {
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i++; /* count number of environment variables */
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len += sizeof(char *); /* length of pointer */
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len += strlen(*envp) + 1; /* length of string */
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}
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len += sizeof(char *); /* plus length of null pointer */
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envp = kmalloc(len, GFP_KERNEL);
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ptr = (char *) &envp[i+1];
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for (argc = 0; argc < i; argc++) {
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envp[argc] = ptr;
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strcpy(ptr, prom_envp[argc]);
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ptr += strlen(prom_envp[argc]) + 1;
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}
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envp[i] = NULL; /* end array with null pointer */
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prom_envp = envp;
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for (i = 0; i < boot_mem_map.nr_map; i++) {
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if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
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continue;
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addr = boot_mem_map.map[i].addr;
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free_init_pages("prom memory",
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addr, addr + boot_mem_map.map[i].size);
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}
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}
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struct prom_pmemblock *__init prom_getmdesc(void)
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{
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static char memsz_env[] __initdata = "memsize";
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static char heaptop_env[] __initdata = "heaptop";
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char *str;
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unsigned int memsize;
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unsigned int heaptop;
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int i;
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str = prom_getenv(memsz_env);
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if (!str) {
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ppfinit("memsize not set in boot prom, "
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"set to default (32Mb)\n");
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memsize = 0x02000000;
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} else {
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memsize = simple_strtol(str, NULL, 0);
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if (memsize == 0) {
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/* if memsize is a bad size, use reasonable default */
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memsize = 0x02000000;
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}
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/* convert to physical address (removing caching bits, etc) */
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memsize = CPHYSADDR(memsize);
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}
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str = prom_getenv(heaptop_env);
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if (!str) {
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heaptop = CPHYSADDR((u32)&_text);
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ppfinit("heaptop not set in boot prom, "
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"set to default 0x%08x\n", heaptop);
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} else {
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heaptop = simple_strtol(str, NULL, 16);
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if (heaptop == 0) {
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/* heaptop conversion bad, might have 0xValue */
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heaptop = simple_strtol(str, NULL, 0);
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if (heaptop == 0) {
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/* heaptop still bad, use reasonable default */
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heaptop = CPHYSADDR((u32)&_text);
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}
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}
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/* convert to physical address (removing caching bits, etc) */
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heaptop = CPHYSADDR((u32)heaptop);
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}
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/* the base region */
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i = 0;
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mdesc[i].type = BOOT_MEM_RESERVED;
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mdesc[i].base = 0x00000000;
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mdesc[i].size = PAGE_ALIGN(0x300 + 0x80);
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/* jtag interrupt vector + sizeof vector */
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/* PMON data */
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if (heaptop > mdesc[i].base + mdesc[i].size) {
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i++; /* 1 */
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mdesc[i].type = BOOT_MEM_ROM_DATA;
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mdesc[i].base = mdesc[i-1].base + mdesc[i-1].size;
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mdesc[i].size = heaptop - mdesc[i].base;
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}
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/* end of PMON data to start of kernel -- probably zero .. */
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if (heaptop != CPHYSADDR((u32)_text)) {
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i++; /* 2 */
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mdesc[i].type = BOOT_MEM_RAM;
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mdesc[i].base = heaptop;
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mdesc[i].size = CPHYSADDR((u32)_text) - mdesc[i].base;
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}
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/* kernel proper */
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i++; /* 3 */
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mdesc[i].type = BOOT_MEM_RESERVED;
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mdesc[i].base = CPHYSADDR((u32)_text);
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mdesc[i].size = CPHYSADDR(PAGE_ALIGN((u32)_end)) - mdesc[i].base;
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/* Remainder of RAM -- under memsize */
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i++; /* 5 */
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mdesc[i].type = yamon_free;
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mdesc[i].base = mdesc[i-1].base + mdesc[i-1].size;
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mdesc[i].size = memsize - mdesc[i].base;
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return &mdesc[0];
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}
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