[coreboot] Problems with VIA EPIA-ME6000 Vol2

[Klaus Stammermann]

Hi

My original email was not added to mailing list. Therefore I sent it
again. I hope it is not just a delay so it would be a double posting.

Here my original email:

------------------------ Ursprüngliche Nachricht -------------------------
Betreff: Re: [coreboot] Problems with VIA EPIA-ME6000
Von:     "Klaus Stammermann" <klaus123 at ibnoetzold.de>
Datum:   Mo, 10.03.2008, 16:00
An:      coreboot at coreboot.org
--------------------------------------------------------------------------

Hi there

I made some changes on config and now I got vga output. Now I use filo 0.5
as payload and I removed "normal" boot option (just fallback). As vga bios
I got optionroms extend by some 0 to 64K.

Here svn diff on whole coreboot sandbox:

Index: src/mainboard/via/epia-m/Options.lb
=================================================================== ---
src/mainboard/via/epia-m/Options.lb	(Revision 3086)
+++ src/mainboard/via/epia-m/Options.lb	(Arbeitskopie)
@@ -52,7 +52,7 @@
 ### Build options
 ###
 default CONFIG_PCI_ROM_RUN=0
-default CONFIG_CONSOLE_VGA=0
+default CONFIG_CONSOLE_VGA=1

 ##
 ## Build code for the fallback boot
Index: src/mainboard/via/epia-m/Config.lb
=================================================================== ---
src/mainboard/via/epia-m/Config.lb	(Revision 3086)
+++ src/mainboard/via/epia-m/Config.lb	(Arbeitskopie)
@@ -181,10 +181,18 @@
 			device pci 12.0 on end  # Ethernet
 		end
 #		This is on the EPIA MII, not the M.
-		chip southbridge/ricoh/rl5c476
-			register "enable_cf" = "1"
-			device pci 0a.0 on end
-			device pci 0a.1 on end
-		end
+#		chip southbridge/ricoh/rl5c476
+#			register "enable_cf" = "1"
+#			device pci 0a.0 on end
+#			device pci 0a.1 on end
+#		end
 	end
+	device pci_domain 1 on
+		device pci 0.0 on  # PCI
+			chip drivers/pci/onboard
+				device pci 0.0 on end
+				register "rom_address" = "0xfffc0000" #256k image
+			end
+        	end
+	end
 end
Index: targets/via/epia-m/Config.lb
=================================================================== ---
targets/via/epia-m/Config.lb	(Revision 3086)
+++ targets/via/epia-m/Config.lb	(Arbeitskopie)
@@ -7,21 +7,21 @@
 option  DEFAULT_CONSOLE_LOGLEVEL=8
 option  CONFIG_CONSOLE_SERIAL8250=1

-option ROM_SIZE=256*1024
+option ROM_SIZE=(256*1024)-(64*1024)


 option HAVE_OPTION_TABLE=1
 option CONFIG_ROM_PAYLOAD=1
 option HAVE_FALLBACK_BOOT=1
 #option CONFIG_COMPRESSED_PAYLOAD_NRV2B=1
-option CONFIG_COMPRESSED_PAYLOAD_NRV2B=0
+#option CONFIG_COMPRESSED_PAYLOAD_NRV2B=0


 ###
 ### Compute the location and size of where this firmware image
 ### (coreboot plus bootloader) will live in the boot rom chip.
 ###
-option FALLBACK_SIZE=131072
+option FALLBACK_SIZE=(192*1024)

 ## Coreboot C code runs at this location in RAM
 option _RAMBASE=0x00004000
@@ -29,20 +29,24 @@
 #
 # Via EPIA M
 #
-romimage "normal"
-	option USE_FALLBACK_IMAGE=0
-#option ROM_IMAGE_SIZE=128*1024
-	option ROM_IMAGE_SIZE=64*1024
-	option COREBOOT_EXTRA_VERSION=".0-Normal"
-	payload $(HOME)/svn/payload.elf
-end
+#romimage "normal"
+#	option USE_FALLBACK_IMAGE=0
+#	option ROM_IMAGE_SIZE=(128*1024)-27312
+#	option ROM_IMAGE_SIZE=(96*1024)-27312
+#	option ROM_IMAGE_SIZE=0xc000
+#	option ROM_SECTION_OFFSET=0x10000
+#	option ROM_SECTION_SIZE=0x18000
+#	option COREBOOT_EXTRA_VERSION=".0-Normal"
+#	payload $(HOME)/Entwicklung/LinuxBIOS/VIA-BIOS/filo.small.elf
+#end

 romimage "fallback"
 	option USE_FALLBACK_IMAGE=1
-	#option ROM_IMAGE_SIZE=128*1024
-	option ROM_IMAGE_SIZE=60*1024
+	option ROM_IMAGE_SIZE=(192*1024)-33104
+#	option ROM_IMAGE_SIZE=(96*1024)-27312
+#	option ROM_IMAGE_SIZE=0xc000
 	option COREBOOT_EXTRA_VERSION=".0-Fallback"
-	payload $(HOME)/svn/payload.elf
+	payload $(HOME)/Entwicklung/LinuxBIOS/VIA-BIOS/filo.small.05.elf
 end

-buildrom ./coreboot.rom ROM_SIZE "normal" "fallback"
+buildrom ./coreboot.rom ROM_SIZE "fallback"

But system does not booting at all. I think device mapping works not
correct. On booting system is checking sda. Some errors like:
exception Emask ... 0x2 frozen
soft resetting port...
configured for UDMA...
(... are inserted by me because I got this output only on display)

At end kernel panic is shown:
0800 2000880 sda driver: sd
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(0,0)

But installed system starts with original bios. As device I use a CF-disk
on an CF-IDE adapter.

Does anyone get an idea how to solve this problem?

Klaus



Dipl.-Ing.(FH)  Klaus Stammermann
Softwareentwickler

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