Re: [ARMedslack] A quick primer for the PI
-Original Message- From: Davide To: Slackware ARM port Sent: Wed, Sep 25, 2013 3:46 pm Subject: [ARMedslack] A quick primer for the PI I got a friend to lend me a PI for a week ... I had a quick look at the community links for slackware on the PI but none really tell me what i want to know: what does the GPU look for in the SD ? (as fas as I know it's the GPU that loads stuff from SD into memory and then passes control to it) does it look for a second stage boot loader like a uboot image or does it load kernel and initrd ? (bootcode.bin) I'm supposing that the first partition (the dos one) is where this stuff should be put ? The content in there looks about right: root@darkstar:/tmp# fdisk -l slackwarearm-14.0-8GB-20130623.img Disk slackwarearm-14.0-8GB-20130623.img: 2558 MB, 2558967808 bytes 4 heads, 32 sectors/track, 39046 cylinders, total 4997984 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x7091 Device Boot Start End Blocks Id System slackwarearm-14.0-8GB-20130623.img1 32 97663 48816 c W95 FAT32 (LBA) slackwarearm-14.0-8GB-20130623.img2 97664 878847 390592 82 Linux swap slackwarearm-14.0-8GB-20130623.img3 87884815751167 7436160 83 Linux root@darkstar:/tmp# echo $((32 * 512)) 16384 root@darkstar:/tmp# losetup -o 16384 /dev/loop0 slackwarearm-14.0-8GB-20130623.img root@darkstar:/tmp# modprobe vfat root@darkstar:/tmp# mount /dev/loop0 /mnt/floppy/ root@darkstar:/tmp# ls /mnt/floppy/ COPYING.linux* config-raspberrypi-3.2.27* start.elf* LICENCE.broadcom* config.txt* start_cd.elf* System.map-raspberrypi-3.2.27* fixup.dat* zImage-raspberrypi-3.2.27* bootcode.bin* fixup_cd.dat* cmdline.txt*initrd-raspberrypi.img* root@darkstar:/tmp# I plan to play a little with a miniroot so I won't need an 8Gb SD :) ATB David Hi David, The GPU looks for bootcode.bin, which looks for and loads loader.bin. Loader.bin reads in config.txt (to configure the hardware) and loads start.elf (the GPU binary blob). Once it has configured the hardware, it then loads kernel.img, and feeds it the contents of cmdline.txt. So you have to have bootcode.bin, loader.bin, config.txt, start.elf, kernel.img, and cmdline.txt, then if you load a ramdisk image in the cmdline.txt file you need the ramdisk image file. Thanks Dave ___ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack
Re: [ARMedslack] A quick primer for the PI
The pi requires a fat filesystem to boot from. That partition is normally mountesd on /boot and should contain a kernel - default kernel.img, start.elf, bootcode.bin, cmdline.txt and optionally a config.txt which is used to overide defaut settings. --Original Message-- From: stan...@stanleygarvey.com Sender: ARMedslack To: Davide To: Slackware ARM port ReplyTo: stan...@stanleygarvey.com ReplyTo: Slackware ARM port Subject: Re: [ARMedslack] A quick primer for the PI Sent: 25 Sep 2013 16:59 Try the installer image. The gpu boots the system. At work now so can' explain further at he moment. Regards Stanley Sent from my BlackBerry smartphone from Virgin Media -Original Message- From: Davide Sender: "ARMedslack" Date: Wed, 25 Sep 2013 15:46:29 To: Slackware ARM port Reply-To: Davide , Slackware ARM port Subject: [ARMedslack] A quick primer for the PI ___ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack ___ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack Sent from my BlackBerry smartphone from Virgin Media ___ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack
Re: [ARMedslack] A quick primer for the PI
Try the installer image. The gpu boots the system. At work now so can' explain further at he moment. Regards Stanley Sent from my BlackBerry smartphone from Virgin Media -Original Message- From: Davide Sender: "ARMedslack" Date: Wed, 25 Sep 2013 15:46:29 To: Slackware ARM port Reply-To: Davide , Slackware ARM port Subject: [ARMedslack] A quick primer for the PI ___ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack ___ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack
[ARMedslack] A quick primer for the PI
I got a friend to lend me a PI for a week ... I had a quick look at the community links for slackware on the PI but none really tell me what i want to know: what does the GPU look for in the SD ? (as fas as I know it's the GPU that loads stuff from SD into memory and then passes control to it) does it look for a second stage boot loader like a uboot image or does it load kernel and initrd ? (bootcode.bin) I'm supposing that the first partition (the dos one) is where this stuff should be put ? The content in there looks about right: root@darkstar:/tmp# fdisk -l slackwarearm-14.0-8GB-20130623.img Disk slackwarearm-14.0-8GB-20130623.img: 2558 MB, 2558967808 bytes 4 heads, 32 sectors/track, 39046 cylinders, total 4997984 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x7091 Device Boot Start End Blocks Id System slackwarearm-14.0-8GB-20130623.img1 32 97663 48816 c W95 FAT32 (LBA) slackwarearm-14.0-8GB-20130623.img2 97664 878847 390592 82 Linux swap slackwarearm-14.0-8GB-20130623.img3 878848 15751167 7436160 83 Linux root@darkstar:/tmp# echo $((32 * 512)) 16384 root@darkstar:/tmp# losetup -o 16384 /dev/loop0 slackwarearm-14.0-8GB-20130623.img root@darkstar:/tmp# modprobe vfat root@darkstar:/tmp# mount /dev/loop0 /mnt/floppy/ root@darkstar:/tmp# ls /mnt/floppy/ COPYING.linux* config-raspberrypi-3.2.27* start.elf* LICENCE.broadcom* config.txt* start_cd.elf* System.map-raspberrypi-3.2.27* fixup.dat* zImage-raspberrypi-3.2.27* bootcode.bin* fixup_cd.dat* cmdline.txt* initrd-raspberrypi.img* root@darkstar:/tmp# I plan to play a little with a miniroot so I won't need an 8Gb SD :) ATB David___ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack
