libpayload: usbmsc: Set correct allocation length for REQUEST SENSE

So I was debugging this faulty USB SD card reader that would just fail
it's REQUEST SENSE response for some reason (sending the CSW immediately
without the data), cursing those damn device vendors for building
non-compliant crap like I always do... when I noticed that we do not
actually set the Allocation Length field in our REQUEST SENSE command
block at all! We set a length in the CBW, but the SCSI command still has
its own length field and the SCSI spec specifically says that the device
has to return the exact amount of bytes listed there (even if it's 0). I
don't know what's more suprising: that we had such a blatant bug in this
stack for so long, or that this card reader is really the first device
to actually be spec compliant in that regard.

This patch fixes the bug and changes the command block structures to be
a little easier to read (why that field was called 'lun' before is
beyond me... LUN is a transport level thing and should never appear in
the command block at all, for any command). It also fixes a memcpy() in
wrap_cbw() to avoid a read buffer overflow that might expose stack frame
data to the device.

BRANCH=rambi?,nyan
BUG=chrome-os-partner:28437
TEST=The card reader works now (for it's first LUN at least).

Original-Change-Id: I86fdcae2ea4d2e2939e3676d31d8b6a4e797873b
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/198100
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 88943d9715994a14c50e74170f2453cceca0983b)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I3097c223248c07c866a33d4ab8f3db1a7082a815
Reviewed-on: http://review.coreboot.org/7903
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
libpayload: usbmsc: Implement limited LUN support

I always thought the support for multiple logical SCSI units in the USB
mass storage class was a dead feature. Turns out that it's actually used
by SD card readers that provide multiple slots (e.g. one regular sized
and one micro-SD). Implementing perfect support for that would require a
major redesign of the whole MSC stack, since the one device -> one disk
assumption is deeply embedded in our data structures.

Instead, this patch implements a poor man's LUN support that will just
cycle through all available LUNs (in multiple calls to usb_msc_poll())
until it finds a connected device. This should be reasonable enough to
allow these card readers to be usable while only requiring superficial
changes.

Also removes the unused 'protocol' attribute of usb_msc_inst_t.

BRANCH=rambi?,nyan
BUG=chrome-os-partner:28437
TEST=Alternatively plug an SD or micro-SD card (or both) into my card
reader, confirm that one of them is correctly detected at all times.

Original-Change-Id: I3df4ca88afe2dcf7928b823aa2a73c2b0f599cf2
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/198101
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 960534a20e4334772c29355bb0d310b3f41b31ee)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I39909fc96e32c9a5d76651d91c2b5c16c89ace9e
Reviewed-on: http://review.coreboot.org/7904
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
libpayload: arm: Add EABI compatible utility functions.

Some EABI conformant toolchains like GCC need additional functions like raise.
To prevent payloads adding arch-specific implementations everywhere, we should
provide the default version in libpayload.

BUG=none
TEST=emerge-nyan libpayload # pass
BRANCH=none

Original-Change-Id: Id1e3c29590aa5881aefd944a7551949ce9a47b8f
Original-Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/199686
(cherry picked from commit 395810c4b744dbb720050f79a2c1a30e81464554)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I2e1d8c8cb519f8e788c22d081132d23b49b8f822
Reviewed-on: http://review.coreboot.org/7906
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
libpayload: video: Make cursor fixup independent of visibility

The video console runs a video_console_fixup_cursor() function after
every printed character to make sure the cursor is still in the output
window and avoid overflows. For some crazy reason, this function does
not run when cursor_enabled is false... however, that variable is only
about cursor *visibility*, and it's imperative that we still do proper
bounds checking for our output even if the cursor itself doesn't get
displayed (otherwise we can end up overwriting malloc cookies that cause
a panic on the next free() and other fun things like that).

In fact, there seems to be no reason at all to even keep track of the
cursor visibility state in the generic video console framework (the
specific backends already do it, too), so let's remove that code
entirely. Also set the default cursor visibilty in the corebootfb
backend to 0 since that's consistent with what the other backends do.

BUG=None
TEST=Turn on video console on Big, generate enough output to make it
scroll, make sure it does not crash.

Original-Change-Id: I1201a5bccb4711b6ecfc4cf47a8ace16331501b4
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/196323
Original-Reviewed-by: Gabe Black <gabeblack@chromium.org>
Original-Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
(cherry picked from commit 1f880bca06ed0a3f2c75abab399d32a2e51ed10e)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I6c67a9efb00d96fcd67f7bc1ab55a23e78fc479e
Reviewed-on: http://review.coreboot.org/7908
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
libpayload: Clean up USB build warnings

There were a few build warnings in the USB driver to clean
up before -Werror may be enabled.

Change-Id: I220cfcf0ee926912a184a91d3ced3ba61259130e
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/7921
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
libpayload: Remove PC Keyboard from ARM build

The keyboard.c uses IO cycles to access the legacy PC keyboard device.
ARM can't do IO cycles, so remove the option for ARM configs.

Change-Id: Ifc6c2368563f27867f4babad5afdde0e78f4cf78
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/7922
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
libpayload: video: Check for 'console' pointer before dereferencing it

Seems that the 'if (cursor_enabled)' check in
video_console_fixup_cursor() that was removed in chromium.org 1f880bca0 really
meant to check for 'if (console)'. Looks like the whole video console
driver is built extra robust to not fail no matter how screwed up the
console is, so let's add this missing check here as well. Also fixed up
a few other missing 'if (!console)' checks while I'm at it.

However, what payloads should really be doing is check the return value
of video_(console_)init() and not call the other video functions if that
failed. This also adapts video_console_init() to correctly pass through
the return value for that purpose (something that seems to have been
overlooked in the dd9e4e58 refactoring).

BUG=chrome-os-partner:28494
TEST=None. I don't know what Dave did to trigger this in the first
place, but it's pretty straight-forward.

Original-Change-Id: I1b9f09d49dc70dacf20621b19e081c754d4814f7
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/200688
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit 3f01d1dc0974774f0b3ba5fc4e069978f266f2fc)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I98c1d8360539b457e6df07cbcf799acaf6c4631b
Reviewed-on: http://review.coreboot.org/7910
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)
libpaylod: fix lpgcc logic statement

The -z "${V}" sure must have meant to be -n "${V}", but come to think
of it, this check is not necessary, as the following check will
succeed if and only if V is set to 1.

BUG=none
TEST=verified that adding V=1 to the environment causes the lpgcc
     debug statements to show up in the output.

Original-Change-Id: I1eb43ef49aeb4f16aef4fbee3a1037e853f9b40f
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/200501
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: Marc Jones <marc.jones@se-eng.com>
(cherry picked from commit 7d69a292b1dc90e68e539e329f019098f8af5007)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I63785fd9fc88b95d50ecced1f4f74a76ca68089c
Reviewed-on: http://review.coreboot.org/7912
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
cbmem: use a single id to name mapping table

CBMEM IDs are converted to symbolic names by both target and host
code. Keep the conversion table in one place to avoid getting out of
sync.

BUG=none
TEST=manual
  . the new firmware still displays proper CBMEM table entry descriptions:

    coreboot table: 276 bytes.
    CBMEM ROOT  0. 5ffff000 00001000
    COREBOOT    1. 5fffd000 00002000

  . running make in util/cbmem still succeeds

Original-Change-Id: I0bd9d288f9e6432b531cea2ae011a6935a228c7a
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/199791
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 5217446a536bb1ba874e162c6e2e16643caa592a)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I0d839316e9697bd3afa0b60490a840d39902dfb3
Reviewed-on: http://review.coreboot.org/7938
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>