Developer Manual/Tools - Revision history

PatrickGeorgi: /* Basic requirements */

2013-06-08T08:24:13Z

‎Basic requirements

Stefanct: /* USB debug devices */

2013-03-17T09:38:55Z

‎USB debug devices

Idwer: /* External EPROM/Flash programmer that can program the flash chip on your motherboard */

2012-08-08T19:49:35Z

‎External EPROM/Flash programmer that can program the flash chip on your motherboard

GNUtoo: /* Chip removal tools */

2012-03-03T18:08:31Z

‎Chip removal tools

Mrtadis at 22:23, 18 May 2011

2011-05-18T22:23:49Z

Jason Wang: /* External EPROM/Flash programmer that can program the flash chip on your motherboard */

2011-04-11T07:30:41Z

‎External EPROM/Flash programmer that can program the flash chip on your motherboard

Jason Wang: /* External EPROM/Flash programmer that can program the flash chip on your motherboard */

2011-04-11T07:30:09Z

‎External EPROM/Flash programmer that can program the flash chip on your motherboard

Quux: /* External EPROM/Flash programmer that can program the flash chip on your motherboard */

2010-12-02T07:15:20Z

‎External EPROM/Flash programmer that can program the flash chip on your motherboard

Quux: /* External EPROM/Flash programmer that can program the flash chip on your motherboard */ RTL8139 32 pin plus ZIF socket adapter

2010-12-02T07:14:54Z

‎External EPROM/Flash programmer that can program the flash chip on your motherboard: RTL8139 32 pin plus ZIF socket adapter

Quux: /* Top Hat Flash */ too bad it is not more common yet

2010-12-02T06:35:38Z

‎Top Hat Flash: too bad it is not more common yet

@@ Line 5: / Line 5: @@
 * A mainboard you want to port coreboot to.
 * Datasheets
-* A Linux/UNIX machine for development purposes
+* A development machine (ideally separate from your target system, though there are some mavericks who use the target for development)
-** The coreboot build environment is not well-supported on Windows. It may be possible to do it under cygwin but nobody has tried.
+** A Linux/UNIX machine is recommended
 It's also handy to have one/some/all of the following:
-−
 === Artecgroup programmable LPC dongle ===

@@ Line 156: / Line 156: @@
 An alternative to a serial console may be a USB debug device. They are not so common, yet. Their advantage is higher speed than a serial console. One might hook an FPGA to it for profiling purposes or some automated checks. Accessing a USB debug device from within BIOS is not different than other USB devices, and is part of the USB standard.
-See also [[EHCI Debug Port]].
+See also [[EHCI Debug Port]] and [[DIY_EHCI_debug_dongle]].
 == Serial console software ==

@@ Line 28: / Line 28: @@
 * use a RTL8139 NIC (PCI network card) with 32 pin socket and the appropriate ZIF socket adapter with flashrom. this is a low cost approach. Check, whether flashrom will recognize your flash part in this scenario.
 * [http://www.dediprog.com/SPI-flash-in-circuit-programming/SF100 Dediprog SF100]:High speed spi programmer, can be used under both windows and linux(with flashrom). See [[Dediprog SF100|SF100 Usage]] for detail description.
 === BIOS Savior ===

@@ Line 75: / Line 75: @@
 Image:Pushpin roms 1.jpg|Push pins with cut off needles, attached to ROM chips with super glue.
 Image:Pushpin roms 2.jpg|More push pins on ROM chips.
 </gallery>

← Older revision		Revision as of 22:23, 18 May 2011
Line 49:		Line 49:

	[[Image:Top_hat_flash.JPG\|thumb\|right\|Top Hat Flash, PCB side to flip over soldered-on PLCC.]]		[[Image:Top_hat_flash.JPG\|thumb\|right\|Top Hat Flash, PCB side to flip over soldered-on PLCC.]]
		+
		+	<br clear="all" />
		+
		+	=== Dual flash ===
		+
		+	[[File:Dual_parallel_flash.jpg\|200px\|thumb\|right\|Dual flash "pie". One for keeping working firmware image. Flash chips are selectable by a tumbler switch]]
		+	You may DIY yours dual flash device. As an example look here:
		+	[[Developer Manual/Tools/Dual Flash]]

	<br clear="all" />		<br clear="all" />

@@ Line 26: / Line 26: @@
 * [http://www.loet.de/flasher_en.html IDE adapter for PLCC32 & DIP32 sockets]: Has Linux 2.4 & 2.6 drivers $/€ ~48 (kit €33) free manual with schematics & component list downloadable (component cost approx. €5)
 * [http://www.conitec.net/english/software.htm GALEP-4]: Has [http://www.conitec.net/hardware/down/galep-linux-alpha1.html beta Linux drivers] ~$300. See [[Galep IV]] for a description on how to get the more modern Windows software working in Linux with '''wine'''.
-* use a RTL8139 with 32 pin socket and the appropriate ZIF socket adapter with flashrom. this is a low cost approach. Check, whether flashrom will recognize your flash part in this scenario.
+* use a RTL8139 NIC (PCI network card) with 32 pin socket and the appropriate ZIF socket adapter with flashrom. this is a low cost approach. Check, whether flashrom will recognize your flash part in this scenario.
 === BIOS Savior ===

← Older revision		Revision as of 06:35, 2 December 2010
Line 41:		Line 41:

	A similar function is achieved by the '''Top Hat Flash''' which comes at no extra cost with many Elitegroup, and some GIGABYTE and Albatron mainboards like ECS KN3 SLI2 Extreme.		A similar function is achieved by the '''Top Hat Flash''' which comes at no extra cost with many Elitegroup, and some GIGABYTE and Albatron mainboards like ECS KN3 SLI2 Extreme.
		+
		+	As you can guess from the photo to the side, it is two plcc sockets soldered together. The upper one carries a spare BIOS chip as a fallback / failsafe secondary bootable BIOS. By means of some 'obscure' cicuitry, the additional, secondary chip is being booted from, if you manually press / stick the TOP HAT FLASH onto your primary BIOS chip on the mainboard. Sadly, this simple technique does not seem to work with other boards right away.

	After bootup, it can manually be lifted off the original BIOS chip, so the original BIOS can be reflashed after a failure. The '''RST#''' pin is wired to '''OE#''' on the spare chip, otherwise it's wired 1:1. Top Hat Flash is equipped with a Winbond W39V040AP FWH. It may rely on particular circuitry on the mainboard to operate.		After bootup, it can manually be lifted off the original BIOS chip, so the original BIOS can be reflashed after a failure. The '''RST#''' pin is wired to '''OE#''' on the spare chip, otherwise it's wired 1:1. Top Hat Flash is equipped with a Winbond W39V040AP FWH. It may rely on particular circuitry on the mainboard to operate.