Commit Graph

2323 Commits

Author SHA1 Message Date
Ian Lepore
86a5575402 Add basic cpu frequency control and temperature monitoring to imx6_anatop.
The temperature monitor device is enabled to sample the die temperature at
16hz.  The temperature is published via sysctl.  A callout routine at 10hz
monitors the temperature and throttles back the cpu if the temperature
goes over a user-settable throttle point (by default 10C less than the
critical high-point temperature for the chip).  The hardware is supposed
to be able to deliver an interrupt when the temperature exceeds a settable
limit, but the interrupt never arrives so for now a callout does the job.

At attach time we read the maximum cpu frequency the chip is allowed to run
at and the cpu is set to run at that speed.  It's reported at attach time.
A sysctl variable reports the current speed when queried.

New sysctl values:

  dev.imx6_anatop.0.cpu_mhz: 984
  dev.imx6_anatop.0.temperature: 37.9C
  dev.imx6_anatop.0.throttle_temperature: 95.0C

Steven Lawrance did the initial heavy lifting on this, but I changed
enough stuff that I'm the one to blame if anything breaks.

Submitted by:	Steven Lawrance <stl@koffein.net>
2014-02-21 06:00:06 +00:00
Warner Losh
40a4c9d72e Remove bogus blank line. 2014-02-21 05:17:30 +00:00
Ian Lepore
8df34dd25b Add early printf support, wrapped in #if 0 because it's only rarely needed. 2014-02-20 14:29:59 +00:00
Ian Lepore
4af6e44409 Give the fdt helper routines static linkage since no global definition
of them is provided anywhere.  (gcc was nice enough to warn about this,
clang didn't for some reason.)
2014-02-17 20:04:57 +00:00
John Hay
f37fafddd6 Make it possible to use the env kernel config file option for AVILA
and CAMBRIA boards that does not use loader to load the kernel. This
is basically how it was done for i386. This way tunables can also be
set. For example in config file:

env "/conf/AVILA.env"

And in AVILA.env:

vfs.unmapped_buf_allowed=0

MFC after:	2 weeks
2014-02-17 11:05:57 +00:00
Ruslan Bukin
0beadc3c1c - Decrease buffer size.
- Handle eDMA interrupt on running channel only.
2014-02-16 19:21:44 +00:00
Ruslan Bukin
586a16c431 Add driver for Synchronous Audio Interface (SAI).
SAI supports full-duplex serial interfaces with frame
synchronization such as I2S, AC97, TDM, and codec/DSP
interfaces.
2014-02-16 16:49:54 +00:00
Ian Lepore
49624653d5 Oops, remove some dregs of debugging. 2014-02-16 03:30:22 +00:00
Ian Lepore
f3639674b5 Make it possible to access the ocotp registers before the ocotp device
is attached, by establishing a temporary mapping of the registers when
necessary.  This is a temporary measure to keep progress moving; in the
long run we need better control over the order in which devices attach
(better than "the order they appear in the fdt dts source").
2014-02-16 03:09:39 +00:00
Ian Lepore
b6e466340b Sweep up a couple crumbs left over from the imx6->fsl renaming. 2014-02-15 21:59:00 +00:00
Ian Lepore
350badf9db It turns out Freescale cleverly made the ocotp device compatible across
several different families of SoCs, so move it to the freescale directory
and prefix everything with fsl rather than imx6.
2014-02-15 21:21:57 +00:00
Ian Lepore
f1887a86aa Convert the "R1B fix" from a busy-loop in the interrupt handler to a callout. 2014-02-15 17:55:35 +00:00
Ian Lepore
844a97cdc2 Add a driver to provide access to imx6 on-chip one-time-programmble data.
Submitted by:	Steven Lawrance <stl@koffein.net>
2014-02-15 17:19:55 +00:00
Zbigniew Bodek
bccb7a02b5 Handle pmap_enter() on already promoted mappings for ARMv6/v7
Attempt to demote the superpage if trying to pmap_enter() on
one. Panic only when the particular superpage should
no longer exist for that pmap and address.
2014-02-15 13:27:45 +00:00
Zbigniew Bodek
6720dd234f Remove spurious assertion from pmap_extract_locked() on ARM
The condition under assertion is no longer valid since
superpages support is operating on section mappings.
2014-02-15 13:24:58 +00:00
Zbigniew Bodek
6be8284c66 Avoid redundant superpage promotion attempts on ARM
Because pmap_enter_locked() is called from few different functions
some redundancy in superpage promotion attempts can be observed.
Hence, avoid promotion in pmap_enter_object() (if the object can
be mapped by superpage it will be handled by pmap_enter_object()
itself) and also do not waste time in pmap_enter_quick().
From now on the promotion will be performed only in pmap_enter().
2014-02-15 13:22:37 +00:00
Zbigniew Bodek
bdd635e646 Fix superpage promotion on ARM with respect to RO/RW and wired attributes
It was possible to create RW superpage mapping even if
the base pages were RO due to wrong setting of the prot
flag passed to pmap_map_section().
Promotion attempt should be canceled in case of attributes
mismatch between any two base pages. Since we still use
pv_flags to maintain permission to write (PVF_WRITE) and
wired status (PVF_WIRED) for a page, it is also necessary
to take those variables into account.
2014-02-15 13:20:17 +00:00
Zbigniew Bodek
a7bd28f2cb Ensure proper TLB invalidation on superpage promotion and demotion on ARM
Base pages within newly created superpage need to be invalidated so that
new mapping is "visible" immediately after creation.
2014-02-15 13:17:51 +00:00
Zbigniew Bodek
807c947a43 Always clear L1 PTE descriptor when removing superpage on ARM
Invalidate L1 PTE regardles of existance of the corresponding
l2_bucket. This is relevant when superpage is entered via
pmap_enter_object() and will fix crash on entering page
in place of not properly removed superpage.
2014-02-15 13:13:00 +00:00
Christian Brueffer
d01195e3a9 Correct the order of arguments to mtx_init().
PR:		186701
Submitted by:	Takanori Sawada <tak.swd at gmail.com>
MFC after:	2 weeks
2014-02-14 11:18:15 +00:00
Andrew Turner
7cbd3dd68b Allow the kernel to be loaded at any 1MiB address. This requirement is
because we use the 1MiB section maps as they only need a single pagetable.

To allow this we only use pc relative loads to ensure we only load from
physical addresses until we are running from a known virtual address.

As a side effect any data from before or 64MiB after the kernel needs to
be mapped in to be used. This should not be an issue for kernels loaded
with ubldr as it places this data just after the kernel. It will be a
problem when loading directly from anything using the Linux ABI that
places the ATAG data outside this range, for example U-Boot.
2014-02-13 21:30:54 +00:00
Ian Lepore
f688503cc4 Remove a couple obsolete function declarations. 2014-02-13 19:14:23 +00:00
Luiz Otavio O Souza
62564a0858 Make the gpioled(4) work out of the box on BBB.
Add gpioled(4) to BEAGLEBONE kernel and add the description of the four
on-board leds of beaglebone-black to its DTS file.

Approved by:	adrian (mentor, implicit)
2014-02-13 18:51:37 +00:00
Luiz Otavio O Souza
8c705c2c30 Allow the use of the OFW GPIO bus for ti_gpio and bcm2835_gpio. With this
change the gpio children can be described as directly connected to the GPIO
controller without the need of describing the OFW GPIO bus itself on the
DTS file.

With this commit the OFW GPIO bus is fully functional on BBB and RPi.

GPIO controllers which want to use the OFW GPIO bus will need similar
changes.

Approved by:	adrian (mentor, implicit)
2014-02-13 18:42:23 +00:00
Warner Losh
fd420f84dd Honor the disabled status by only grabbing resources and returning
when running under FDT.
2014-02-13 16:50:08 +00:00
Warner Losh
88bc24ff35 Fix board ID too... 2014-02-13 15:47:41 +00:00
Warner Losh
2956b2b069 Fix board name. 2014-02-13 15:46:08 +00:00
Ruslan Bukin
896fc918b1 Add function for configuring PLL4 (Audio) clock frequency output. 2014-02-13 06:38:01 +00:00
Ian Lepore
1d650ff3a8 Add handling of standard "non-removable" property, and also some workaround
code so that if card detect is wired to a gpio pin, for now we just treat
it the same as non-removable (because there isn't a gpio driver yet).
2014-02-13 03:45:33 +00:00
Ian Lepore
1744bacc7b Write translation code for the SDHCI_PRESENT_STATE register. Freescale
moved some bits around in their version of the register, adjust things
so that the sdhci code sees the standard layout.
2014-02-13 02:38:16 +00:00
Ian Lepore
28ea625437 Use the same logic as the x86 platforms to avoid trying perform fault fixup
while in a critical section or while holding a non-sleepable lock.

Reviewed by:	cognet
2014-02-12 20:09:27 +00:00
Ian Lepore
255a0cc653 Use the right symbols for determining arm architecture. Include the
necessary header file which has the new FAULT_WNR symbol defined in it.
2014-02-12 19:59:30 +00:00
Ian Lepore
bcaa399985 On armv6 and later, use the WriteNotRead bit of the fault status register
to decide what protections are required by the faulting access.  The old
code disassembled the faulting instruction, and there are a lot of new
instructions that aren't handled.  The old code is still used for armv4/5
which doesn't have the WNR bit)
2014-02-12 18:55:26 +00:00
Warner Losh
ff9a07fa97 Convert two while(1); statements into proper panics. Soon, kernels
with early printf support will print this info... For kernels without,
the observed behavior will be the same as it is now...
2014-02-12 03:19:35 +00:00
Ian Lepore
42c8459bed Rework the EARLY_PRINTF mechanism. Instead of defining a special eprintf()
routine, now a platform can provide a pointer to an early_putc() routine
which is used instead of cn_putc().  Control can be handed off from early
printf support to standard console support by NULLing out the pointer
during standard console init.

This leverages all the existing error reporting that uses printf calls,
such as panic() which can now be usefully employed even in early
platform init code (useful at least to those who maintain that code and
build kernels with EARLY_PRINTF defined).

Reviewed by:	imp, eadler
2014-02-12 00:53:38 +00:00
Warner Losh
360bd8ad2b Swap PA and VA so they are in the right registers... 2014-02-11 22:09:03 +00:00
Ian Lepore
7233ddb0cb Check in the "real" board_tsc4370 file in place of the stubbed out one.
Real means the one TSC / Symmetricom / Microsemi actually uses on their 4370
and other rm9200 boards.  This code demonstrates a variety of useful things
board init code can do, including adjusting the master clock frequency.
2014-02-11 21:13:37 +00:00
Ruslan Bukin
ebc7703641 Disable debugging by default. 2014-02-11 20:14:54 +00:00
Ian Lepore
65f04a3da5 Update legacy platforms to use new arm_physmem helper routines. 2014-02-09 22:10:14 +00:00
Ian Lepore
46aa33b2ac If someone tries to boot a generic ATMEL kernel that has no board_init()
routine compiled in, print a friendly error message about it rather than
mysteriously hanging while trying to init 4GB of nonexistant ram.
2014-02-09 21:21:10 +00:00
Warner Losh
1ef5f6a006 Add FDT attachment. 2014-02-09 21:02:46 +00:00
Warner Losh
c6053263cc FDT attachment... 2014-02-09 21:01:53 +00:00
Warner Losh
3526a97bba Add TWI attachment for FDT. We're only matching the SAMG20 device for
now, others to follow.
2014-02-09 21:01:10 +00:00
Warner Losh
bf5c70c929 Add FDT attachment. 2014-02-09 21:00:22 +00:00
Warner Losh
22a484c9d5 Add FDT attachment. Flag lost functionality with FDT_HACKS so we can
find it later.
2014-02-09 20:59:46 +00:00
Warner Losh
bc259c9157 Add FDT attachment. 2014-02-09 20:58:03 +00:00
Warner Losh
4da9131d2a Add FDT attachment, plus minor code shuffle. 2014-02-09 20:57:26 +00:00
Warner Losh
210c0e4c87 Add FDT attachment. 2014-02-09 20:56:39 +00:00
Warner Losh
bad391b21c Add FDT matching code. 2014-02-09 20:55:49 +00:00
Ian Lepore
342322bb36 Add some extra debugging output when DEBUG is defined. 2014-02-09 20:20:49 +00:00