Datasheets describe the used command as 'I2C Read' but adding the
word 'eeprom' in between should avoid further confusion with other
block commands.
Followups will add a symmetrical pair of commands i2c_block_read()
and i2c_block_write() that operate via I2C_EN bit and have a 32
byte size restriction on block transfers. For some hardware revision
these block commands are available, while 'I2C Read' was not.
Change-Id: I4494ab2985afc7f737ddacc8d706a5d5395e35cf
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31151
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
With the only valid GTT setting being 1M, TSEG_BASE can only be
aligned to TSEG_SIZE if it is also 1M. This alignment requirement
comes from the desire to use SMRR to protect the SMM RAM.
Tested on Foxconn D41S.
Change-Id: Ibd879529923a1676f2e78500797a52d8a37b8eef
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/30869
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
8M was set in the assumption that at least 4M was needed for IED
(Intel Enhanced Debug) , but this is not true.
The SMRR MTRR's need to have TSEG aligned to its size which is easier when TSEG
is only 2M. Also at most 6M of RAM more becomes available for use.
Change-Id: I4b114c8dc13699b3c034f0a7060181d9d590737b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27873
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
When doing the receive enable training, the final mapping of the ranks is
already done, so we can be sure that that address 0x00000000 there will always
be a rank.
Change-Id: I7ac017a8816fc9a47cef0695826a1c32f699f6f8
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/28230
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
With this the time spend during the raminit decreases from ~480ms to ~126ms.
Change-Id: Ic23f39f1017010c89795e626f6a6f918f8bda17a
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/28229
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
TSEG can be used as a stage cache and SMM can be relocated here.
Change-Id: Ifa3acce57f0c13eee326b7c203a43453c74c3161
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/25593
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Without this remapping code enabled, the system fails to boot properly
if the amount of ram inserted is larger than 4G minus the mmio
space (hardcoded to 1G here).
Change-Id: I02e7ceed0cd9db7eb7182481b6989f80cef31ee5
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/21228
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This does not use loops to compute timings but uses DIV_ROUND_UP.
Another thing affected by this patch are minimum timings. Presumably
those only need to be guarded against on DDR3. With this change
timings are set up like vendor (with tWTR below previous minimum)
TESTED on Intel D510MO
Change-Id: Ia374f26e5bbb8b90d90c24ae6c20412ba53bd7b6
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19495
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Some of these can be changed from #if to if(), but that will happen
in a follow-on commmit.
Change-Id: Id5bc8b75b1fa372f31982b8636f1efa4975b61a5
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20346
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
These delays, adding up to 600 ms, don’t seem to be needed, so remove
them.
TESTED on d510mo, boots fine without.
Change-Id: If089d6677fe95b086eeb00540acfbb66fa2e1c47
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19505
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Damien Zammit <damien@zamaudio.com>
Also changes the arguments of some functions to const.
This reduces romstage size by a whopping 1009 bytes.
Change-Id: I054504412524b7be19d98081097843b61bc0c459
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/20147
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ryan Salsamendi <rsalsamendi@hotmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
This is not needed.
Change-Id: Id19a00c1546b7a71d90aa8c7e43e6efde1e9fbbc
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19425
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
For raminit to succeed on a hot reset the following things are
prevented from running:
* Clearing self refresh
* Setting memory frequency
* programming sdram dll timings
* programming rcomp
TESTED on Intel d510mo.
Change-Id: I8f7e5c2958df29a96cdf856ade2f4f33707ad362
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19337
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
The function decode_spd uses undeclared variables and an incorrectly
initialized array.
Change-Id: Ib45a8b2946c04c270e29524675b1f09d491d282b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19336
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Mask out the bit that doesn't fit in 32bits, so gcc 6.1 is happy
Change-Id: I13e2b41742206b8d86b90314b80cc324c00ae637
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/14639
Reviewed-by: Damien Zammit <damien@zamaudio.com>
Tested-by: build bot (Jenkins)
VGA grub console works but display wobbles left/right
drm/i915 driver reports one error:
- [drm:i915_irq_handler] *ERROR* pipe A underrun
- Monitor does not display 1920x1080 after modeset
- Other resolutions look out of sync
Cause: suspect single bug in raminit (chipset init)
Change-Id: I2dcf59f8f30efe98f17a937bf98f5ab7221fc3ac
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/12921
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Does native ram init for Intel Atom D5xx 8086:a000 northbridge
Tested on Intel D510MO mainboard, board boots linux kernel
- Works fully with both dimms populated (2x2GB), memtest passes 100%
- Almost boots with only one dimm in one of the slots
(suspect bad memory map with one dimm?)
- Reads garbage with only one dimm in other slot
Change-Id: Ibd22be2a959045e0a83aae2a3a0e877013f80711
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: https://review.coreboot.org/12501
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
