Release 4.11 drivers/mtd/maps/uclinux.c
/****************************************************************************/
/*
* uclinux.c -- generic memory mapped MTD driver for uclinux
*
* (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
*
* License: GPL
*/
/****************************************************************************/
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/major.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>
#include <asm/sections.h>
/****************************************************************************/
#ifdef CONFIG_MTD_ROM
#define MAP_NAME "rom"
#else
#define MAP_NAME "ram"
#endif
/*
* Blackfin uses uclinux_ram_map during startup, so it must not be static.
* Provide a dummy declaration to make sparse happy.
*/
extern struct map_info uclinux_ram_map;
struct map_info uclinux_ram_map = {
.name = MAP_NAME,
.size = 0,
};
static unsigned long physaddr = -1;
module_param(physaddr, ulong, S_IRUGO);
static struct mtd_info *uclinux_ram_mtdinfo;
/****************************************************************************/
static struct mtd_partition uclinux_romfs[] = {
{ .name = "ROMfs" }
};
#define NUM_PARTITIONS ARRAY_SIZE(uclinux_romfs)
/****************************************************************************/
static int uclinux_point(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys)
{
struct map_info *map = mtd->priv;
*virt = map->virt + from;
if (phys)
*phys = map->phys + from;
*retlen = len;
return(0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alan Cox | 49 | 69.01% | 1 | 25.00% |
| Jared Hulbert | 20 | 28.17% | 1 | 25.00% |
| Mike Frysinger | 1 | 1.41% | 1 | 25.00% |
| David Woodhouse | 1 | 1.41% | 1 | 25.00% |
| Total | 71 | 100.00% | 4 | 100.00% |
/****************************************************************************/
static int __init uclinux_mtd_init(void)
{
struct mtd_info *mtd;
struct map_info *mapp;
mapp = &uclinux_ram_map;
if (physaddr == -1)
mapp->phys = (resource_size_t)__bss_stop;
else
mapp->phys = physaddr;
if (!mapp->size)
mapp->size = PAGE_ALIGN(ntohl(*((unsigned long *)(mapp->phys + 8))));
mapp->bankwidth = 4;
printk("uclinux[mtd]: probe address=0x%x size=0x%x\n",
(int) mapp->phys, (int) mapp->size);
/*
* The filesystem is guaranteed to be in direct mapped memory. It is
* directly following the kernels own bss region. Following the same
* mechanism used by architectures setting up traditional initrds we
* use phys_to_virt to get the virtual address of its start.
*/
mapp->virt = phys_to_virt(mapp->phys);
if (mapp->virt == 0) {
printk("uclinux[mtd]: no virtual mapping?\n");
return(-EIO);
}
simple_map_init(mapp);
mtd = do_map_probe("map_" MAP_NAME, mapp);
if (!mtd) {
printk("uclinux[mtd]: failed to find a mapping?\n");
return(-ENXIO);
}
mtd->owner = THIS_MODULE;
mtd->_point = uclinux_point;
mtd->priv = mapp;
uclinux_ram_mtdinfo = mtd;
mtd_device_register(mtd, uclinux_romfs, NUM_PARTITIONS);
return(0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alan Cox | 151 | 72.95% | 1 | 9.09% |
| Uwe Kleine-König | 26 | 12.56% | 1 | 9.09% |
| David Woodhouse | 10 | 4.83% | 2 | 18.18% |
| Mike Frysinger | 8 | 3.86% | 1 | 9.09% |
| Greg Ungerer | 7 | 3.38% | 2 | 18.18% |
| Thomas Gleixner | 2 | 0.97% | 1 | 9.09% |
| Jamie Iles | 1 | 0.48% | 1 | 9.09% |
| Artem B. Bityutskiy | 1 | 0.48% | 1 | 9.09% |
| Dmitri Vorobiev | 1 | 0.48% | 1 | 9.09% |
| Total | 207 | 100.00% | 11 | 100.00% |
device_initcall(uclinux_mtd_init);
/****************************************************************************/
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alan Cox | 268 | 66.01% | 1 | 5.26% |
| Uwe Kleine-König | 65 | 16.01% | 2 | 10.53% |
| Jared Hulbert | 20 | 4.93% | 1 | 5.26% |
| Mike Frysinger | 16 | 3.94% | 2 | 10.53% |
| David Woodhouse | 11 | 2.71% | 2 | 10.53% |
| Greg Ungerer | 7 | 1.72% | 2 | 10.53% |
| Art Haas | 4 | 0.99% | 1 | 5.26% |
| Andrea Righi | 3 | 0.74% | 1 | 5.26% |
| Geert Uytterhoeven | 3 | 0.74% | 1 | 5.26% |
| Paul Gortmaker | 3 | 0.74% | 1 | 5.26% |
| Thomas Gleixner | 2 | 0.49% | 1 | 5.26% |
| Tobias Klauser | 1 | 0.25% | 1 | 5.26% |
| Jamie Iles | 1 | 0.25% | 1 | 5.26% |
| Artem B. Bityutskiy | 1 | 0.25% | 1 | 5.26% |
| Dmitri Vorobiev | 1 | 0.25% | 1 | 5.26% |
| Total | 406 | 100.00% | 19 | 100.00% |
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