C3000 Device Specifics - Revision history

Phil284: revert to remove spam

Phil284 — Fri, 24 Nov 2006 19:02:51 GMT

revert to remove spam

←Older revision		Revision as of 19:02, 24 November 2006
Line 1:		Line 1:
-

	== Device Description ==		== Device Description ==
Line 227:		Line 226:

	[[endecsh.c]]		[[endecsh.c]]
-
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Nichole at 15:51, 21 November 2006

Nichole — Tue, 21 Nov 2006 15:51:12 GMT

←Older revision		Revision as of 15:51, 21 November 2006
Line 227:		Line 227:

	[[endecsh.c]]		[[endecsh.c]]
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		+
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Iamasmith: /* Creation of a new initrd for the SL-C3000 */

Iamasmith — Tue, 05 Apr 2005 17:00:47 GMT

Creation of a new initrd for the SL-C3000

←Older revision		Revision as of 17:00, 5 April 2005
Line 200:		Line 200:
	A WORD OF WARNING when repacking the home structure into a new .home_default.tar... the version of tar built into the Sharp ROM is roughly equivalent to version 1.12 of GNU tar, particularly with respect to the format of device files stored in the tar. Since the /dev directory is stored within the initrd it is absolutely CRITICAL that you repack the .home_default.tar in the right format. If you type 'tar â€“version' this will get you the version number back. If its a later version of tar than 1.12 you need the following format for the tar command...		A WORD OF WARNING when repacking the home structure into a new .home_default.tar... the version of tar built into the Sharp ROM is roughly equivalent to version 1.12 of GNU tar, particularly with respect to the format of device files stored in the tar. Since the /dev directory is stored within the initrd it is absolutely CRITICAL that you repack the .home_default.tar in the right format. If you type 'tar â€“version' this will get you the version number back. If its a later version of tar than 1.12 you need the following format for the tar command...

-	tar -c ~~â€“format~~=oldgnu -f .home_default.tar home/	+	tar -c â€“-format=oldgnu -f .home_default.tar home/

	Be sure to run the command from a directory containing nothing else but the home directory structure as this will all get expanded to the Z following a 'device zero' condition.		Be sure to run the command from a directory containing nothing else but the home directory structure as this will all get expanded to the Z following a 'device zero' condition.

Iamasmith: /* Creation of a new initrd for the SL-C3000 */

Iamasmith — Tue, 05 Apr 2005 15:24:54 GMT

Creation of a new initrd for the SL-C3000

←Older revision		Revision as of 15:24, 5 April 2005
Line 200:		Line 200:
	A WORD OF WARNING when repacking the home structure into a new .home_default.tar... the version of tar built into the Sharp ROM is roughly equivalent to version 1.12 of GNU tar, particularly with respect to the format of device files stored in the tar. Since the /dev directory is stored within the initrd it is absolutely CRITICAL that you repack the .home_default.tar in the right format. If you type 'tar â€“version' this will get you the version number back. If its a later version of tar than 1.12 you need the following format for the tar command...		A WORD OF WARNING when repacking the home structure into a new .home_default.tar... the version of tar built into the Sharp ROM is roughly equivalent to version 1.12 of GNU tar, particularly with respect to the format of device files stored in the tar. Since the /dev directory is stored within the initrd it is absolutely CRITICAL that you repack the .home_default.tar in the right format. If you type 'tar â€“version' this will get you the version number back. If its a later version of tar than 1.12 you need the following format for the tar command...

-	~~<code>~~tar -c â€“format=oldgnu -f .home_default.tar home/~~</code>~~	+	tar -c â€“format=oldgnu -f .home_default.tar home/

	Be sure to run the command from a directory containing nothing else but the home directory structure as this will all get expanded to the Z following a 'device zero' condition.		Be sure to run the command from a directory containing nothing else but the home directory structure as this will all get expanded to the Z following a 'device zero' condition.
Line 206:		Line 206:
	Now, assuming that you have finished working with the initrd in a structure in a directory called initrd you need to get hold of mkfs.jffs2 (get this from the SL-C860 root image if you like off the Sharp developer site... Sharp didn't yet post the SL-C3000 image which is why we had to extract it.) and use the following command to build the jffs2 image.		Now, assuming that you have finished working with the initrd in a structure in a directory called initrd you need to get hold of mkfs.jffs2 (get this from the SL-C860 root image if you like off the Sharp developer site... Sharp didn't yet post the SL-C3000 image which is why we had to extract it.) and use the following command to build the jffs2 image.

-	mkfs.jffs2 -o initrd.jffs2 -e16k -r initrd	+	mkfs.jffs2 -o initrd.jffs2 -e16k -r initrd

	You then need to exract the version information from the Sharp initrd.bin....		You then need to exract the version information from the Sharp initrd.bin....

-	head -c 16 sharp-initrd.bin > initrdheader	+	head -c 16 sharp-initrd.bin > initrdheader

	...and finally concatenate as follows...		...and finally concatenate as follows...

-	~~<code>~~cat initrdheader initrd.jffs2 > initrd.bin~~</code>~~	+	cat initrdheader initrd.jffs2 > initrd.bin

	This will produce an initrd.bin that is compatible with the installer shown in this paper.		This will produce an initrd.bin that is compatible with the installer shown in this paper.

Iamasmith: /* Creation of a new initrd for the SL-C3000 */

Iamasmith — Tue, 05 Apr 2005 15:23:35 GMT

Creation of a new initrd for the SL-C3000

←Older revision		Revision as of 15:23, 5 April 2005
Line 170:		Line 170:
	The initrd on the SL-C3000 is simply a jffs2 image. It is, however, shipped with a 16 byte version header so here's how to successfully extract an image to work from....		The initrd on the SL-C3000 is simply a jffs2 image. It is, however, shipped with a 16 byte version header so here's how to successfully extract an image to work from....

-	~~<code>~~	+	modprobe mtdcore
-	modprobe mtdcore	+	modprobe jffs2
-	modprobe jffs2	+	modprobe mtdram total_size=5120 erase_size=16
-	modprobe mtdram total_size=5120 erase_size=16	+	modprobe mtdchar
-	modprobe mtdchar	+	mknod /dev/mtdblock0 b 31 0
-	mknod /dev/mtdblock0 b 31 0	+	modprobe mtdblock
-	modprobe mtdblock	+	losetup -o 16 /dev/loop0 ./initrd.bin
-	losetup -o 16 /dev/loop0 ./initrd.bin	+	dd if=/dev/loop0 of=/dev/mtdblock0
-	dd if=/dev/loop0 of=/dev/mtdblock0	+	losetup -d /dev/loop0
-	losetup -d /dev/loop0	+	mount -t jffs2 /dev/mtdblock0 /mymountpoint
-	mount -t jffs2 /dev/mtdblock0 /mymountpoint	+	cd /mymountpoint
-	cd /mymountpoint	+	tar -cf ~/myinitrd.tar *
-	tar -cf ~/myinitrd.tar *	+	cd
-	cd	+	rmmod mtdblock
-	rmmod mtdblock	+	rmmod mtdram
-	rmmod mtdram	+	rmmod jffs2
-	rmmod jffs2	+	rmmod mtdchar
-	rmmod mtdchar	+	rmmod mtdpart
-	rmmod mtdpart	+	rmmod mtd_blkdevs
-	rmmod mtd_blkdevs	+	rmmod mtdcore
-	rmmod mtdcore	+
-	~~</code>~~	+

	This will create you a nice initrd tar file that you can extract and work with.		This will create you a nice initrd tar file that you can extract and work with.
Line 218:		Line 217:

	This will produce an initrd.bin that is compatible with the installer shown in this paper.		This will produce an initrd.bin that is compatible with the installer shown in this paper.
-

	== Prior to flashing ==		== Prior to flashing ==

Iamasmith: /* Preparing a Kernel for use with the Sharp Installer */

Iamasmith — Tue, 05 Apr 2005 15:23:00 GMT

Preparing a Kernel for use with the Sharp Installer

←Older revision		Revision as of 15:23, 5 April 2005
Line 161:		Line 161:
	Basically the approach that I have taken is simply to strip the last 16 bytes off the end of the Sharp Kernel image from the Sharp 1.11JP ROM as follows..		Basically the approach that I have taken is simply to strip the last 16 bytes off the end of the Sharp Kernel image from the Sharp 1.11JP ROM as follows..

-	tail -c 16 zImage.bin-sharprom > kerneltail	+	tail -c 16 zImage.bin-sharprom > kerneltail
-	cat zImage.bin-mykernel kerneltail > zImage-prepped	+	cat zImage.bin-mykernel kerneltail > zImage-prepped

	This is really enough to get the ball rolling.		This is really enough to get the ball rolling.
-

	== Creation of a new initrd for the SL-C3000 ==		== Creation of a new initrd for the SL-C3000 ==

Iamasmith: /* Doing a better job for /home ? is it possible. */

Iamasmith — Tue, 05 Apr 2005 15:18:44 GMT

Doing a better job for /home ? is it possible.

←Older revision		Revision as of 15:18, 5 April 2005
Line 103:		Line 103:
	This idea, unfortunately, could lead to stability issues so was abandoned.		This idea, unfortunately, could lead to stability issues so was abandoned.

-	The main area of concern for moving /home is the availability of the subordinate locations whilst the hdd is in suspend mode because a critically low condition has special handling code that the kernel executes to immediately ~~place~~ the device back into suspension (without even displaying anything on the screen)... if you want to see this in action run your Z until flat, try to power it on a few times when it's showing completely flat, charge it then go into terminal and look at the kernel ring buffer using dmesg. You will see the emergency suspend stuff logged in there.	+	The main area of concern for moving /home is the availability of the subordinate locations whilst the hdd is in suspend mode because a critically low battery condition has special handling code that the kernel executes - this immediately places the device back into suspension (without even displaying anything on the screen)... if you want to see this in action run your Z until flat, try to power it on a few times when it's showing completely flat, charge it then go into terminal and look at the kernel ring buffer using dmesg. You will see the emergency suspend stuff logged in there.

	Even with mount bind placing the critical regions in flash we have to realise that they are still subordinate to /home and that inode traversal from /home to those subordinate locations (finding the bind point) will potentially trigger a required read of /home which will in turn attempt to use the hdd â€“ not as efficient as maintaining the /home in flash.		Even with mount bind placing the critical regions in flash we have to realise that they are still subordinate to /home and that inode traversal from /home to those subordinate locations (finding the bind point) will potentially trigger a required read of /home which will in turn attempt to use the hdd â€“ not as efficient as maintaining the /home in flash.

	We will have to be more inventive to find a better solution for /home in the future.		We will have to be more inventive to find a better solution for /home in the future.
-

	== Zeroing an SL-C3000 ==		== Zeroing an SL-C3000 ==

Iamasmith: /* Device Description */

Iamasmith — Tue, 05 Apr 2005 15:10:07 GMT

Device Description

←Older revision		Revision as of 15:10, 5 April 2005
Line 8:		Line 8:

	I'll mention one more thing here because I may not mention it later. If you shutdown -h the SL-C3000 it does NOT power down (or look like it) like the previous models did. The screen will stay on and the device will freeze. To completely drop the device following shutdown you should open the battery compartment and push the recessed reset switch that sits on the side of the battery compartment nearest the centre of the unit â€“ you don't need to remove the battery to do this.		I'll mention one more thing here because I may not mention it later. If you shutdown -h the SL-C3000 it does NOT power down (or look like it) like the previous models did. The screen will stay on and the device will freeze. To completely drop the device following shutdown you should open the battery compartment and push the recessed reset switch that sits on the side of the battery compartment nearest the centre of the unit â€“ you don't need to remove the battery to do this.
		+
		+	Oh and finally do NOT use the version of fdisk that comes with the Z to repartition the HDD, it suffers from a bug with structure alignment that's actually present in the version of GCC for ARM architectures.
		+
		+	Do a search and find reference to spurious 4th partition entry appearing with 0 bytes length.. this is the error. There are various good versions knocking around including the one I built for the 1.22 Cacko ROM. (search for new versions of fdisk and e2fsprogs on the oesf Sharp forum).

	== The traditional Zaurus layout ==		== The traditional Zaurus layout ==

Iamasmith: /* Device Description */

Iamasmith — Tue, 05 Apr 2005 14:37:10 GMT

Device Description

←Older revision		Revision as of 14:37, 5 April 2005
Line 8:		Line 8:

	I'll mention one more thing here because I may not mention it later. If you shutdown -h the SL-C3000 it does NOT power down (or look like it) like the previous models did. The screen will stay on and the device will freeze. To completely drop the device following shutdown you should open the battery compartment and push the recessed reset switch that sits on the side of the battery compartment nearest the centre of the unit â€“ you don't need to remove the battery to do this.		I'll mention one more thing here because I may not mention it later. If you shutdown -h the SL-C3000 it does NOT power down (or look like it) like the previous models did. The screen will stay on and the device will freeze. To completely drop the device following shutdown you should open the battery compartment and push the recessed reset switch that sits on the side of the battery compartment nearest the centre of the unit â€“ you don't need to remove the battery to do this.
-

	== The traditional Zaurus layout ==		== The traditional Zaurus layout ==

Iamasmith: /* Prior to flashing */

Iamasmith — Tue, 05 Apr 2005 14:34:47 GMT

Prior to flashing

←Older revision		Revision as of 14:34, 5 April 2005
Line 228:		Line 228:

	[[endecsh.c]]		[[endecsh.c]]
-	/*
-	* Encode Decode shell script Ver 0.1
-	*----------------------------------------------------------------------------
-	* Copyright 2003 T.Yamashita
-	*
-	* This program is a no guarantee.
-	* This program is free software; you can redistribute it and/or modify
-	* it under the terms of version 2 of the GNU General Public License as
-	* published by the Free Software Foundation.
-	*
-	* This program is distributed in the hope that it will be useful,
-	* but WITHOUT ANY WARRANTY; without even the implied warranty of
-	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-	* GNU General Public License for more details.
-	*
-	*/
-
-	#include <stdio.h>
-	#include <string.h>
-
-	unsigned char enctable[256]={
-	0x84,0x26,0xa7,0x29,0x10,0xba,0x1d,0xa4,0x15,0x0a,0x2f,0x74,0x0d,0x0e,0xdc,0xd2,
-	0x14,0x40,0xbc,0xb1,0x45,0x16,0x17,0x54,0xd9,0x0c,0x96,0xb2,0x8b,0xb4,0xc3,0x1b,
-	0x41,0x22,0x13,0x24,0xa1,0x38,0x27,0x44,0x19,0x34,0x81,0x36,0xed,0x2e,0x0b,0xc7,
-	0xac,0xc9,0x23,0x2a,0x35,0x2c,0xb6,0x6c,0x79,0xee,0x71,0x6d,0xd1,0x48,0x3b,0xe2,
-	0x5f,0x42,0x37,0xcd,0xd0,0x90,0xa5,0x88,0x85,0x7c,0x00,0xcb,0x4d,0x4e,0x82,0xfb,
-	0x80,0x51,0x97,0xb9,0xdd,0x56,0x93,0x7a,0x61,0x5a,0x5b,0x5c,0xf8,0x5e,0xf9,0x28,
-	0xf0,0xe9,0x03,0xb0,0x60,0xec,0x39,0xca,0x73,0xa8,0x6b,0x12,0x31,0xe4,0x30,0x25,
-	0xe7,0xc0,0x9d,0x6e,0x3e,0x50,0x77,0x02,0xbd,0x58,0x7f,0xd8,0x0f,0x9c,0x92,0x4b,
-	0x49,0xf1,0x57,0x1a,0xaf,0xeb,0x87,0x3c,0x70,0xf2,0xf7,0x8c,0x8d,0x8e,0xb7,0xbe,
-	0x91,0x1c,0x8f,0x94,0x89,0x7e,0x7d,0x98,0x09,0x9a,0x6f,0xc8,0x9f,0x9e,0xc4,0xfc,
-	0x8a,0xa2,0xa3,0x68,0xc5,0xa6,0x53,0xd7,0xe1,0xaa,0xd4,0x64,0x2d,0x69,0x66,0xb5,
-	0x04,0xfd,0xb3,0x43,0x3d,0x9b,0x2b,0xb8,0x5d,0x18,0xad,0xbb,0x99,0x20,0xbf,0xc1,
-	0x65,0x46,0xf3,0xce,0x33,0x63,0x21,0x76,0x52,0x3a,0x4f,0xcc,0xe5,0x47,0xcf,0x4c,
-	0xda,0x08,0xd3,0xab,0xd5,0x4a,0xae,0x86,0x06,0xfa,0xdb,0x83,0x59,0x7b,0xdf,0xe0,
-	0x11,0x72,0xe3,0x05,0xc2,0xc6,0xa9,0xe8,0x1f,0xea,0x6a,0x67,0x75,0xd6,0xef,0x95,
-	0x55,0xde,0x3f,0xf4,0xf5,0xf6,0x07,0x01,0xe6,0x78,0x1e,0xa0,0x32,0xfe,0xff,0x62
-	};
-
-	unsigned char dectable[256]={
-	0x4a,0xf7,0x77,0x62,0xb0,0xe3,0xd8,0xf6,0xd1,0x98,0x09,0x2e,0x19,0x0c,0x0d,0x7c,
-	0x04,0xe0,0x6b,0x22,0x10,0x08,0x15,0x16,0xb9,0x28,0x83,0x1f,0x91,0x06,0xfa,0xe8,
-	0xbd,0xc6,0x21,0x32,0x23,0x6f,0x01,0x26,0x5f,0x03,0x33,0xb6,0x35,0xac,0x2d,0x0a,
-	0x6e,0x6c,0xfc,0xc4,0x29,0x34,0x2b,0x42,0x25,0x66,0xc9,0x3e,0x87,0xb4,0x74,0xf2,
-	0x11,0x20,0x41,0xb3,0x27,0x14,0xc1,0xcd,0x3d,0x80,0xd5,0x7f,0xcf,0x4c,0x4d,0xca,
-	0x75,0x51,0xc8,0xa6,0x17,0xf0,0x55,0x82,0x79,0xdc,0x59,0x5a,0x5b,0xb8,0x5d,0x40,
-	0x64,0x58,0xff,0xc5,0xab,0xc0,0xae,0xeb,0xa3,0xad,0xea,0x6a,0x37,0x3b,0x73,0x9a,
-	0x88,0x3a,0xe1,0x68,0x0b,0xec,0xc7,0x76,0xf9,0x38,0x57,0xdd,0x49,0x96,0x95,0x7a,
-	0x50,0x2a,0x4e,0xdb,0x00,0x48,0xd7,0x86,0x47,0x94,0xa0,0x1c,0x8b,0x8c,0x8d,0x92,
-	0x45,0x90,0x7e,0x56,0x93,0xef,0x1a,0x52,0x97,0xbc,0x99,0xb5,0x7d,0x72,0x9d,0x9c,
-	0xfb,0x24,0xa1,0xa2,0x07,0x46,0xa5,0x02,0x69,0xe6,0xa9,0xd3,0x30,0xba,0xd6,0x84,
-	0x63,0x13,0x1b,0xb2,0x1d,0xaf,0x36,0x8e,0xb7,0x53,0x05,0xbb,0x12,0x78,0x8f,0xbe,
-	0x71,0xbf,0xe4,0x1e,0x9e,0xa4,0xe5,0x2f,0x9b,0x31,0x67,0x4b,0xcb,0x43,0xc3,0xce,
-	0x44,0x3c,0x0f,0xd2,0xaa,0xd4,0xed,0xa7,0x7b,0x18,0xd0,0xda,0x0e,0x54,0xf1,0xde,
-	0xdf,0xa8,0x3f,0xe2,0x6d,0xcc,0xf8,0x70,0xe7,0x61,0xe9,0x85,0x65,0x2c,0x39,0xee,
-	0x60,0x81,0x89,0xc2,0xf3,0xf4,0xf5,0x8a,0x5c,0x5e,0xd9,0x4f,0x9f,0xb1,0xfd,0xfe
-	};
-
-	void convert(unsigned char table,FILE ifp,FILE *ofp)
-	{
-	unsigned char rb[16],wb[16];
-	unsigned int read_cnt;
-	int i;
-
-	do {
-	read_cnt = fread(rb,1,16,ifp);
-	if (read_cnt == 0) break;
-	for (i = 0;i < read_cnt;i++) {
-	wb[i] = table[rb[i]];
-	}
-	fwrite(wb,1,read_cnt,ofp);
-	} while (1);
-	}
-	int main(int argc, char* argv[])
-	{
-	FILE ifp,ofp;
-
-	if (argc != 4) {
-	printf("Encode\nendecsh -e source-file dest-file\nDecode\nendecsh -d source-file dest-file\n");
-	return 0;
-	}
-
-	ifp = fopen(argv[2],"rb");
-	if (ifp == NULL) {
-	printf("%s file not found.\n",argv[2]);
-	return 0;
-	}
-
-	ofp = fopen(argv[3],"wb");
-	if (ofp == NULL) {
-	fclose(ifp);
-	printf("Can't open %s file.\n",argv[3]);
-	return 0;
-	}
-
-	if (strcmp(argv[1],"-e") == 0 \|\| strcmp(argv[1],"-E") == 0) {
-	printf("Encode...");
-	convert(enctable,ifp,ofp);
-	printf("OK.\n");
-	} else if (strcmp(argv[1],"-d") == 0 \|\| strcmp(argv[1],"-D") == 0) {
-	printf("Decode...");
-	convert(dectable,ifp,ofp);
-	printf("OK.\n");
-	} else {
-	printf("unknown option '%s'\n",argv[1]);
-	}
-
-	fclose(ifp);
-	fclose(ofp);
-
-	return 0;
-	}