HD-LANV1 デュアルブート

HD-LANV1 は 15MB の /dev/fl1 のうち、7MB ほどしか使ってないので、 ramdisk.image のシュリンクも必要なく、 15MB の最後の 1MB を第二カーネル置き場とする

misc-simple.c の修正

[yasunari@SECO common]$ diff -c misc-simple.c{.orig,}
*** misc-simple.c.orig  2004-05-24 17:35:29.000000000 +0900
--- misc-simple.c       2004-08-13 01:21:40.000000000 +0900
***************
*** 193,198 ****
--- 193,199 ----
         * were relocated to.
         */
  #ifdef FLASH_BOOT_IMAGE
+ second_kernel:
        {
        int              i = 0;
        info = image_addr;
***************
*** 362,367 ****
--- 363,377 ----
  #ifdef FLASH_BOOT_IMAGE
        i=0;while(i<5 && cmd_line[i] == "debug"[i]) ++i;
        if(i>4) {dbg_mode();}
+
+       /* 012345678901234 */
+       /* root=/dev/hda1  */
+       if ( cmd_line[14] == '2' ) {
+               puts("second kernel\n");
+               image_addr = (struct firminfo*)(KERNEL_IMAGE_ADDRESS + 14 * 1024 * 1024 );
+               goto second_kernel;
+       }
+
  #endif

        /* mappings on early boot can only handle 16M */

make zImage

fl2 への書き込み

１つ目のカーネルの起動

******* Product Information *******
----------------------------------
Product Name: HD-LAN
          VER: 1.23
         Date: 2004/5/10 11:24:1
----------------------------------
Firmware check:done.

>>root=/dev/hda1
Now Loading...done.
Now Booting
Memory BAT mapping: BAT2=64Mb, BAT3=0Mb, residual: 0Mb
HWTYPE:None PLD Model
Linux version 2.4.17_mvl21-sandpoint (root@toda_dev.melcoinc.co.jp) (gcc version
 2.95.3 20010315 (release/MontaVista)) #857 2004年 5月 10日 月曜日 11:22:13 JST
MELCO Network Attached Storage Series
2002 MELCO INC.
（略）
MELCO INC. Link Station series HD-LAN

SECO login: 

２つ目のカーネルの起動

******* Product Information *******
----------------------------------
Product Name: HD-LAN
          VER: 1.23
         Date: 2004/5/10 11:24:1
----------------------------------
Firmware check:done.

>>root=/dev/hda12
second kernel

******* Product Information *******
----------------------------------
Product Name: 
          VER: 65535.65535
         Date: 1899/-1/-1 -1:-1:-1
----------------------------------
Firmware check:Fail!:invalid Firmware size