SATA disk on cntroller in AHCI mode not found: `disk/ahci.c:225: couldn't start CR`

[Paul Menzel]

Dear GRUB developers,


as reported to the coreboot mailing list already [1][2], using GRUB
(4778) as a payload [3] on the AMD SB800 based ASRock E350M1 [4], the
SATA disk attached to the SATA controller is not found when the
controller is in AHCI mode. Using IDE mode works.

        grub> set
        ?=0
        boot_once=true
        color_highlight=black/white
        color_normal=white/black
        debug=ahci,ata
        default=1>Debian GNU/Linux, with Linux 3.2.0-4-686-pae
        feature_200_final=y
        feature_all_video_module=y
        feature_chainloader_bpb=y
        feature_default_font_path=y
        feature_menuentry_id=y
        feature_menuentry_options=y
        feature_ntldr=y
        feature_platform_search_hint=y
        grub_cpu=i386
        grub_platform=coreboot
        lang=
        locale_dir=
        menu_color_highlight=white/blue
        menu_color_normal=cyan/blue
        menuentry_id_option=--id
        pager=
        prefix=(memdisk)/boot/grub
        prev_saved_entry=
        root=mduuid/fb7f3dc5d183cab6121231201a2207b9
        saved_entry=
        secondary_locale_dir=
        grub> insmod ahci
        disk/ahci.c:291: Requesting AHCI ownership
        disk/ahci.c:294: Waiting for BIOS to give up ownership
        disk/ahci.c:305: AHCI ownership obtained
        disk/ahci.c:311: AHCI is in compat mode. Switching
        disk/ahci.c:357: 6 AHCI ports
        disk/ahci.c:367: status 0:123
        disk/ahci.c:184: found device ahci0 (port 0)
        disk/ahci.c:225: couldn't start CR

Increasing to timeout unfortunately does not help [2].

        === modified file 'grub-core/disk/ahci.c'
        --- grub-core/disk/ahci.c       2013-03-25 09:32:56 +0000
        +++ grub-core/disk/ahci.c       2013-03-31 21:32:18 +0000
        @@ -193,7 +193,7 @@
               }
         
           dev->hba->ports[dev->port].command &= ~GRUB_AHCI_HBA_PORT_CMD_ST;
        -  endtime = grub_get_time_ms () + 1000;
        +  endtime = grub_get_time_ms () + 10000;
           while ((dev->hba->ports[dev->port].command & 
GRUB_AHCI_HBA_PORT_CMD_CR))
             if (grub_get_time_ms () > endtime)
               {

SeaBIOS [5] has no problem initializing the controller and strangely it
seems to work on Intel based hardware too.

I’ll gladly test patches and provide more information.


Thanks,

Paul


[1] http://www.coreboot.org/pipermail/coreboot/2013-March/075583.html
[2] http://www.coreboot.org/pipermail/coreboot/2013-April/075592.html
[3] http://www.coreboot.org/GRUB2
[4] http://www.coreboot.org/ASRock_E350M1

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