[OpenWrt-Devel] 答复: [PATCH] [ar71xx] stops qihoo 360 c301 booting into backup firmware

[郭传鈜]

Sorry,I haven't read the whole patch.What you've done is not erasing the
partition.
this patch is great,I think.


2014-09-20 5:00 GMT+08:00 swigger <swigger at gmail.com>:

> Where? I don't think it's whitespace broken.
> Spaces are spaces and tabs are tabs.
>
> -----邮件原件-----
> 发件人: Weijie Gao [mailto:hackpascal at gmail.com]
> 发送时间: 2014年9月20日 1:11
> 收件人: swigger; openwrt-devel at lists.openwrt.org
> 主题: Re: [OpenWrt-Devel] [PATCH] [ar71xx] stops qihoo 360 c301 booting into
> backup firmware
>
> Hi,
>
> It's great. I hope this can be applied.
>
> However, your patch seems to be whitespace broken. Please fix it and
> resend.
>
> Weijie Gao
>
> On 2014/9/20 0:50, swigger wrote:
> > Openwrt recently adds Qihoo [NYSE:QIHU] C301 router support.
> > However, this router has a backup firmware in the second flash and the
> > current trunk can only boot 3 times before u-boot boots into that
> > backup firmware. This is a stratgy for unbricking.
> >
> > This patch makes u-boot happy.
> >
> > Signed-off-by: Xungneg li <swigger at gmail.com>
> >
> > ===============================================================
> > diff --git
> > a/target/linux/ar71xx/files/arch/mips/ath79/mach-qihoo-c301.c
> > b/target/linux/ar71xx/files/arch/mips/ath79/mach-qihoo-c301.c
> > index 08a602f..774356f 100644
> > --- a/target/linux/ar71xx/files/arch/mips/ath79/mach-qihoo-c301.c
> > +++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-qihoo-c301.c
> > @@ -14,6 +14,8 @@
> >  #include <linux/gpio.h>
> >  #include <linux/platform_device.h>
> >  #include <linux/ath9k_platform.h>
> > +#include <linux/crc32.h>
> > +#include <linux/mtd/mtd.h>
> >
> >  #include <asm/mach-ath79/ar71xx_regs.h>
> >
> > @@ -79,6 +81,7 @@ static struct gpio_keys_button
> > qihoo_c301_gpio_keys[] __initdata = {
> >       },
> >  };
> >
> > +static int qihoo_c301_board = 0;
> >  struct flash_platform_data flash __initdata = {NULL, NULL, 0};
> >
> >  static void qihoo_c301_get_mac(const char *name, char *mac) @@ -98,6
> > +101,7 @@ static void __init qihoo_c301_setup(void)
> >       u8 tmpmac[ETH_ALEN];
> >
> >       ath79_register_m25p80_multi(&flash);
> > +     qihoo_c301_board = 1;
> >
> >       ath79_gpio_function_enable(AR934X_GPIO_FUNC_JTAG_DISABLE);
> >
> > @@ -164,3 +168,86 @@ static void __init qihoo_c301_setup(void)
> >
> >  MIPS_MACHINE(ATH79_MACH_QIHOO_C301, "QIHOO-C301", "Qihoo 360 C301",
> >            qihoo_c301_setup);
> > +
> > +
> > +//the following code stops qihoo's uboot booting into the backup system.
> > +static void erase_callback(struct erase_info *erase) {
> > +     char * buf = (char*) erase->priv;
> > +     int ret;
> > +     size_t nb=0;
> > +
> > +     if (erase->state == MTD_ERASE_DONE)
> > +     {
> > +             ret = mtd_write(erase->mtd, 0, 0x10000, &nb, buf);
> > +     }
> > +     kfree(erase);
> > +     kfree(buf);
> > +}
> > +
> > +static int qihoo_reset_trynum(void)
> > +{
> > +     size_t nb = 0;
> > +     char *buf=0, *p;
> > +     const char * match = "image1trynum=";
> > +     size_t matchlen = strlen(match);
> > +     struct erase_info *erase;
> > +     struct mtd_info * mtd;
> > +     unsigned int newcrc;
> > +     int ret;
> > +
> > +     if (! qihoo_c301_board)
> > +             return 0;
> > +
> > +     mtd = get_mtd_device_nm("action_image_config");
> > +     if (IS_ERR(mtd))
> > +     {
> > +             return PTR_ERR(mtd);
> > +     }
> > +     if (mtd->size!=0x10000)
> > +     {
> > +             return -1;
> > +     }
> > +     buf = kzalloc(0x10000+4, GFP_KERNEL);
> > +     ret = mtd_read(mtd, 0, 0x10000, &nb, buf);
> > +     if (nb != 0x10000)
> > +     {
> > +             kfree(buf);
> > +             return -1;
> > +     }
> > +     for (p=buf+4; *p; p+=strlen(p)+1)
> > +     {
> > +             if (strncmp(p, match, matchlen)==0)
> > +             {
> > +                     p += matchlen;
> > +                     while (*p)
> > +                             *p++ = '0';
> > +                     break;
> > +             }
> > +     }
> > +
> > +     newcrc = crc32(~0, buf+4, 0xfffc)^0xffffffff;
> > +     memcpy(buf, &newcrc, 4);
> > +
> > +     erase = kzalloc(sizeof(struct erase_info), GFP_KERNEL);
> > +     if (!erase)
> > +     {
> > +             kfree(buf);
> > +             return -1;
> > +     }
> > +     erase->mtd      = mtd;
> > +     erase->callback = erase_callback;
> > +     erase->addr     = 0;
> > +     erase->len      = 0x10000;
> > +     erase->priv     = (u_long) buf;
> > +     ret = mtd_erase(mtd, erase);
> > +
> > +     if (ret) {
> > +             kfree(buf);
> > +             kfree(erase);
> > +             return ret;
> > +     }
> > +
> > +     return 0;
> > +}
> > +late_initcall(qihoo_reset_trynum);
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