移植MT7620A+MT7610E驱动到Openwrt trunk(Linux Kernel 3.14.18)(续：MT7620A)
浏览数：638 /
时间：2015年06月20日
按照上一篇的内容修改文件重新编译后不会报错，但是烧到flash里后运行的时候有问题，如下：
[ 16.840000] mt7620: module license ‘unspecified‘ taints kernel. [ 16.840000] Disabling lock debugging due to kernel taint [ 16.870000] mt7620: Unknown symbol ra_mtd_write_nm (err 0) [ 16.880000] mt7620: Unknown symbol ra_mtd_read_nm (err 0) [ 16.880000] mt7620: Unknown symbol procRegDir (err 0) [ 17.290000] mt7610: Unknown symbol ra_mtd_write_nm (err 0) [ 17.290000] mt7610: Unknown symbol ra_mtd_read_nm (err 0) [ 17.290000] mt7610: Unknown symbol procRegDir (err 0) [ 17.290000] mt7620: Unknown symbol ra_mtd_write_nm (err 0) [ 17.290000] mt7620: Unknown symbol ra_mtd_read_nm (err 0) [ 17.290000] mt7620: Unknown symbol procRegDir (err 0) [ 17.290000] ip_tables: (C) 2000-2006 Netfilter Core Team [ 17.290000] mt7610: Unknown symbol ra_mtd_write_nm (err 0) [ 17.620000] mt7610: Unknown symbol ra_mtd_read_nm (err 0) [ 17.620000] mt7610: Unknown symbol procRegDir (err 0) [ 17.670000] mt7620: Unknown symbol ra_mtd_write_nm (err 0) [ 17.690000] mt7620: Unknown symbol ra_mtd_read_nm (err 0) [ 17.690000] mt7620: Unknown symbol procRegDir (err 0) [ 17.700000] nf_conntrack version 0.5.0 (1979 buckets, 7916 max) [ 17.740000] xt_time: kernel timezone is -0000 [ 17.780000] mt7610: Unknown symbol ra_mtd_write_nm (err 0) [ 17.800000] mt7610: Unknown symbol ra_mtd_read_nm (err 0) [ 17.800000] mt7610: Unknown symbol procRegDir (err 0) [ 17.860000] mt7620: Unknown symbol ra_mtd_write_nm (err 0) [ 17.880000] mt7620: Unknown symbol ra_mtd_read_nm (err 0) [ 17.880000] mt7620: Unknown symbol procRegDir (err 0) [ 17.900000] PPP generic driver version 2.4.2 [ 17.900000] NET: Registered protocol family 24 [ 17.940000] mt7610: Unknown symbol ra_mtd_write_nm (err 0) [ 17.960000] mt7610: Unknown symbol ra_mtd_read_nm (err 0) [ 17.960000] mt7610: Unknown symbol procRegDir (err 0) [ 18.020000] mt7620: Unknown symbol ra_mtd_write_nm (err 0) [ 18.020000] mt7620: Unknown symbol ra_mtd_read_nm (err 0) [ 18.040000] mt7620: Unknown symbol procRegDir (err 0) [ 18.080000] mt7610: Unknown symbol ra_mtd_write_nm (err 0) [ 18.090000] mt7610: Unknown symbol ra_mtd_read_nm (err 0) [ 18.100000] mt7610: Unknown symbol procRegDir (err 0) [ 18.160000] mt7620: Unknown symbol ra_mtd_write_nm (err 0) [ 18.160000] mt7620: Unknown symbol ra_mtd_read_nm (err 0) [ 18.180000] mt7620: Unknown symbol procRegDir (err 0) [ 28.440000] device eth0.1 entered promiscuous mode
解决方法：
移植7620
1. 添加os/linux/rt_flash.c 内容为：
#include <linux/module.h> #include <linux/types.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/version.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/sched.h> #include <linux/backing-dev.h> #include <linux/compat.h> #include <linux/mount.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/mtd/concat.h> #include <linux/mtd/partitions.h> struct proc_dir_entry *procRegDir; /* * Flash API: ra_mtd_read, ra_mtd_write * Arguments: * - num: specific the mtd number * - to/from: the offset to read from or written to * - len: length * - buf: data to be read/written * Returns: * - return -errno if failed * - return the number of bytes read/written if successed */ int ra_mtd_write_nm(char *name, loff_t to, size_t len, const u_char *buf) { int ret = -1; size_t rdlen, wrlen; struct mtd_info *mtd; struct erase_info ei; u_char *bak = NULL; mtd = get_mtd_device_nm(name); if (IS_ERR(mtd)) { ret = (int)mtd; goto out; } if (len > mtd->erasesize) { put_mtd_device(mtd); ret = -E2BIG; goto out; } bak = kzalloc(mtd->erasesize, GFP_KERNEL); if (bak == NULL) { put_mtd_device(mtd); ret = -ENOMEM; goto out; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) ret = mtd_read(mtd, 0, mtd->erasesize, &rdlen, bak); #else ret = mtd->read(mtd, 0, mtd->erasesize, &rdlen, bak); #endif if (ret) { goto free_out; } if (rdlen != mtd->erasesize) printk("warning: ra_mtd_write_nm: rdlen is not equal to erasesize\n"); memcpy(bak + to, buf, len); ei.mtd = mtd; ei.callback = NULL; ei.addr = 0; ei.len = mtd->erasesize; ei.priv = 0; #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) ret = mtd_erase(mtd, &ei); #else ret = mtd->erase(mtd, &ei); #endif if (ret != 0) goto free_out; #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) ret = mtd_write(mtd, 0, mtd->erasesize, &wrlen, bak); #else ret = mtd->write(mtd, 0, mtd->erasesize, &wrlen, bak); #endif udelay(10); /* add delay after write */ free_out: if (mtd) put_mtd_device(mtd); if (bak) kfree(bak); out: return ret; } int ra_mtd_read_nm(char *name, loff_t from, size_t len, u_char *buf) { int ret; size_t rdlen = 0; struct mtd_info *mtd; mtd = get_mtd_device_nm(name); if (IS_ERR(mtd)) return (int)mtd; #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) ret = mtd_read(mtd, from, len, &rdlen, buf); #else ret = mtd->read(mtd, from, len, &rdlen, buf); #endif if (rdlen != len) printk("warning: ra_mtd_read_nm: rdlen is not equal to len\n"); put_mtd_device(mtd); return ret; } EXPORT_SYMBOL(ra_mtd_write_nm); EXPORT_SYMBOL(ra_mtd_read_nm); EXPORT_SYMBOL(procRegDir); MODULE_AUTHOR("Steven Liu <[email protected]>"); MODULE_DESCRIPTION("Ralink APSoC Flash Map"); MODULE_LICENSE("GPL");
2. 修改os/linux/rt_proc.c
将
struct proc_dir_entry *procRegDir
改为：
struct proc_dir_entry *procRegDir2860v2
并将该文件中所有调用procRegDir 的地方改为： procRegDir2860v2
3. 在Makefile中添加
rt2860v2_ap-objs += ../rt2860v2/os/linux/rt_flash.o
4. 修改 include/chip/rt2880.h
将：
#include <asm/rt2880/rt_mmap.h>
改为：
#include "rt_mmap.h" //fix
5. 修改 include/iface/rtmp_rbs.h
将：
#define RTMP_MAC_IRQ_NUM 4
改为
#define RTMP_MAC_IRQ_NUM 6
6. 修改 include/video.h
添加
VOID VideoTurbineDynamicTune(IN PRTMP_ADAPTER pAd);
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