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It takes about 3 seconds to scrub 8GiB DDR266 RAM.
After ECC scrub XIP cache is disabled for system stability. There is
very little to do in romstage after ECC scrub, especially when RAM
debug messages are turned off. So the delay caused by this is hardly
noticeable.
Cache for complete ROM is re-enabled before ramstage is decompressed,
and it has no unstability issues. So the code required to re-enable
cache for ROM currently already exists in cache-as-ram_ht.inc.
A Kconfig option HW_SCRUBBER enables the scrub to be run on hard
reboots and power-ons.
Change-Id: Icf27acf73240c06b58091f1229efc0f01cca3f85
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/905
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
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Tested on real hardware, mainboard with dual Xeon P4 HT CPUs
requires cache-as-ram init code with AP SIPI protocol.
Also enable 2nd CPU and PATA and clean-up Kconfig and ACPI.
Change-Id: I415482f3af22df79d82492c49aed83549f29aa56
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/886
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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This is an old (pre-2005) entry-level server mainboard. The code
is adapted from mainboard/intel/xe7501devkit.
Featured chips:
- Dual socket604
- E7505 northbridge
- 82801DB southbridge (with EHCI debug port)
- 82870p2 PCI-X bridge
- LPC47M102S-MC super-io
- 512kB FWH flash (flashrom does the job well)
What works:
- Dual-Xeon P4/HT boot with microcode update
- RAM: registered ECC DDR266 in dual-channel
- PCI-X slot interrupts with ACPI and I/O apic
- On-board PCI-X GbE and SCSI
- ACPI power-off and wakeup with PME#
Notes :
- Current ACPI is more or less a mess
- Interrupts do not route correctly with PIRQ
- MP-table is not implemented
- Issues with reboots remain (cold and warm)
- Many superio devices are disabled by default
- Audio codec is not investigated
Change-Id: I02d18c83f485a09ada65dde03bcc86e9163f2011
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/303
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
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