While most registers accesses don't need the use of the MCRX
register (upper 24 bits of address) the MCRX register should
be protected. The reference code could be doing accesses to
registers that initialized the MCRX register. Thus, any access
after that should ensure the MCRX register is initialized
appropriately.
BUG=None
BRANCH=None
TEST=Verified assembly output. Also, built and booted through
depthcharge.
Change-Id: I4d6cfbe6bb1666790c69778b8f2c8baeaf015264
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174643
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/4909
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
After running the MRC blob print out some information
on the training: MRC version, number channels, DDR3
type, and DRAM frequency.
Example output:
MRC v0.90
2 channels of DDR3 @ 1066MHz
Apparently there are two dunit IOSF ports -- 1 for each
channel. However, certain registers really on live in
channel 0. Thus, there was some changes to dunit support
in the iosf area.
BUG=chrome-os-partner:22875
BRANCH=None
TEST=Built and booted bayleybay in different configs.
Change-Id: Ib306432b55f9222b4eb3d14b2467bc0e7617e24f
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/172770
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/4882
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
The dunit on baytrail is the dram unit. Provide a means
to access the configuration registers there using the
proper IOSF mechanisms.
BUG=chrome-os-partner:22875
BRANCH=none
TEST=Built and booted. Able to read dram registers.
Change-Id: I4d5c019720a7883fe93f3e1860bcd57ce2ea6542
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170490
Reviewed-on: http://review.coreboot.org/4853
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The initial Bay Trail code is intended to support
the mobile and desktop version of Bay Trail. This support
can train memory and execute through ramstage. However,
the resource allocation is not curently handled correctly.
The MRC cache parameters are successfully saved and reused
after the initial cold boot.
BUG=chrome-os-partner:22292
BRANCH=None
TEST=Built and booted on a reference board through ramstage.
Change-Id: I238ede326802aad272c6cca39d7ad4f161d813f5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/168387
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4847
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
