forked from Minki/linux
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>
146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*
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* RouterBoard 500 specific prom routines
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*
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* Copyright (C) 2003, Peter Sadik <peter.sadik@idt.com>
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* Copyright (C) 2005-2006, P.Christeas <p_christ@hol.gr>
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* Copyright (C) 2007, Gabor Juhos <juhosg@openwrt.org>
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* Felix Fietkau <nbd@openwrt.org>
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* Florian Fainelli <florian@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/export.h>
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#include <linux/string.h>
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#include <linux/console.h>
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#include <linux/bootmem.h>
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#include <linux/ioport.h>
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#include <linux/blkdev.h>
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#include <asm/bootinfo.h>
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#include <asm/mach-rc32434/ddr.h>
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#include <asm/mach-rc32434/prom.h>
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unsigned int idt_cpu_freq = 132000000;
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EXPORT_SYMBOL(idt_cpu_freq);
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static struct resource ddr_reg[] = {
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{
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.name = "ddr-reg",
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.start = DDR0_PHYS_ADDR,
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.end = DDR0_PHYS_ADDR + sizeof(struct ddr_ram),
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.flags = IORESOURCE_MEM,
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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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/* No prom memory to free */
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}
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static inline int match_tag(char *arg, const char *tag)
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{
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return strncmp(arg, tag, strlen(tag)) == 0;
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}
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static inline unsigned long tag2ul(char *arg, const char *tag)
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{
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char *num;
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num = arg + strlen(tag);
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return simple_strtoul(num, 0, 10);
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}
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void __init prom_setup_cmdline(void)
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{
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static char cmd_line[COMMAND_LINE_SIZE] __initdata;
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char *cp, *board;
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int prom_argc;
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char **prom_argv;
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int i;
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prom_argc = fw_arg0;
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prom_argv = (char **) fw_arg1;
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cp = cmd_line;
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/* Note: it is common that parameters start
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* at argv[1] and not argv[0],
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* however, our elf loader starts at [0] */
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for (i = 0; i < prom_argc; i++) {
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if (match_tag(prom_argv[i], FREQ_TAG)) {
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idt_cpu_freq = tag2ul(prom_argv[i], FREQ_TAG);
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continue;
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}
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#ifdef IGNORE_CMDLINE_MEM
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/* parses out the "mem=xx" arg */
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if (match_tag(prom_argv[i], MEM_TAG))
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continue;
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#endif
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if (i > 0)
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*(cp++) = ' ';
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if (match_tag(prom_argv[i], BOARD_TAG)) {
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board = prom_argv[i] + strlen(BOARD_TAG);
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if (match_tag(board, BOARD_RB532A))
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mips_machtype = MACH_MIKROTIK_RB532A;
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else
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mips_machtype = MACH_MIKROTIK_RB532;
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}
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strcpy(cp, prom_argv[i]);
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cp += strlen(prom_argv[i]);
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}
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*(cp++) = ' ';
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i = strlen(arcs_cmdline);
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if (i > 0) {
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*(cp++) = ' ';
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strcpy(cp, arcs_cmdline);
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cp += strlen(arcs_cmdline);
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}
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cmd_line[COMMAND_LINE_SIZE - 1] = '\0';
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strcpy(arcs_cmdline, cmd_line);
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}
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void __init prom_init(void)
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{
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struct ddr_ram __iomem *ddr;
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phys_addr_t memsize;
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phys_addr_t ddrbase;
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ddr = ioremap_nocache(ddr_reg[0].start,
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ddr_reg[0].end - ddr_reg[0].start);
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if (!ddr) {
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printk(KERN_ERR "Unable to remap DDR register\n");
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return;
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}
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ddrbase = (phys_addr_t)&ddr->ddrbase;
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memsize = (phys_addr_t)&ddr->ddrmask;
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memsize = 0 - memsize;
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prom_setup_cmdline();
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/* give all RAM to boot allocator,
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* except for the first 0x400 and the last 0x200 bytes */
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add_memory_region(ddrbase + 0x400, memsize - 0x600, BOOT_MEM_RAM);
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}
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