Commit Graph

1496 Commits

Author SHA1 Message Date
Warner Losh
86f2e4dc63 Missed one of the special AT91SAM9xxx_BASE defines. This should be
AT91_BASE.
2012-07-10 02:44:15 +00:00
Warner Losh
89e57ebbb5 The system IRQ is always IRQ 1. Make it so. 2012-07-10 02:39:03 +00:00
Warner Losh
9a5f8be0a7 Eliminate the AT91XXXX_BASE for each SoC. AT91_BASE is the right way
to spell this since we only have one AT91_BASE for all Atmel arm9 SoCs.
2012-07-10 02:14:50 +00:00
Warner Losh
378d88b3dc Remove some unused variables/externs that have been copied too many times... 2012-07-10 01:49:50 +00:00
Warner Losh
fcdf8255c5 Not quite ready for this yet, so comment it out. 2012-07-10 01:32:52 +00:00
Warner Losh
0d814a369c There's nothing AT91RM9200 specific about this file at all. 2012-07-10 01:13:00 +00:00
Warner Losh
8304b99a75 Create a generic way to support multiple boards within an
arm platform.  Add all the atmel boards to the ATMEL kernel for
testing purposes.  Until boot loader arg parsing of baord type
is done, this won't actually be able to do the runtime selection.
2012-07-07 05:02:39 +00:00
Marcel Moolenaar
252f780672 Fix LINT.
Obtained from:	Juniper Networks, Inc.
2012-07-05 15:23:45 +00:00
Warner Losh
ba1227af3f Create a pseudo-lint kernel for all at91 SoCs. This kernel will not
currently boot, but will serve as a good linting.  make universe could
now be altered to skip building all the other at91 kernels...
2012-07-01 06:56:41 +00:00
Warner Losh
bb64064e5d Opt-in rather than opt-out of the SoC. We don't really support
running with multiple SoCs compiled in very well anyway, so this just
wastes space.  As more and more SoCs arrive in the tree, it is better
to edit one master file that builds them all than many board files.
2012-07-01 06:34:17 +00:00
Marius Strobl
478f9295ef Exclude at91sam9x25 support, which just wastes space for Ethernut 5. 2012-06-30 14:48:52 +00:00
Warner Losh
c2353ed4c0 Tweak comment. 2012-06-29 06:06:19 +00:00
Warner Losh
5cb96b1dbd Add PIOD, make at91sam9x25 a standard SoC, tweak some comments. 2012-06-29 06:05:44 +00:00
Warner Losh
65b1f169a4 Ooops, replaced the at91sam9g20 interrupt list with the at91sam9x25 ones. 2012-06-29 04:49:50 +00:00
Warner Losh
007c69d506 Initital support for AT91SAM9X25 SoC and the SAM9X25-EK evaluation
board.  Much work remains.
2012-06-29 04:18:52 +00:00
Warner Losh
53edbb2cfe All xscale ports are armeb, so mark it here. This should reduce universe
times a little.
2012-06-29 04:13:31 +00:00
Andrew Turner
74dc547e24 Make the wchar_t type machine dependent.
This is required for ARM EABI. Section 7.1.1 of the Procedure Call for the
ARM Architecture (AAPCS) defines wchar_t as either an unsigned int or an
unsigned short with the former preferred.

Because of this requirement we need to move the definition of __wchar_t to
a machine dependent header. It also cleans up the macros defining the limits
of wchar_t by defining __WCHAR_MIN and __WCHAR_MAX in the same machine
dependent header then using them to define WCHAR_MIN and WCHAR_MAX
respectively.

Discussed with:	bde
2012-06-24 04:15:58 +00:00
Konstantin Belousov
aea810386d Implement mechanism to export some kernel timekeeping data to
usermode, using shared page.  The structures and functions have vdso
prefix, to indicate the intended location of the code in some future.

The versioned per-algorithm data is exported in the format of struct
vdso_timehands, which mostly repeats the content of in-kernel struct
timehands. Usermode reading of the structure can be lockless.
Compatibility export for 32bit processes on 64bit host is also
provided. Kernel also provides usermode with indication about
currently used timecounter, so that libc can fall back to syscall if
configured timecounter is unknown to usermode code.

The shared data updates are initiated both from the tc_windup(), where
a fast task is queued to do the update, and from sysctl handlers which
change timecounter. A manual override switch
kern.timecounter.fast_gettime allows to turn off the mechanism.

Only x86 architectures export the real algorithm data, and there, only
for tsc timecounter. HPET counters page could be exported as well, but
I prefer to not further glue the kernel and libc ABI there until
proper vdso-based solution is developed.

Minimal stubs neccessary for non-x86 architectures to still compile
are provided.

Discussed with:	bde
Reviewed by:	jhb
Tested by:	flo
MFC after:	1 month
2012-06-22 07:06:40 +00:00
Warner Losh
5af29dd303 Fix a stray debug that I committed accidentally years ago... 2012-06-22 06:44:22 +00:00
Konstantin Belousov
232aa31fb9 Reserve AT_TIMEKEEP auxv entry for providing usermode the pointer to
timekeeping information.

MFC after:  1 week
2012-06-22 06:38:31 +00:00
Warner Losh
2403db9a0f Move these #defines to at91reg.h (where I should have put them in the
first place).
2012-06-22 05:54:34 +00:00
Marius Strobl
e1020aef06 Revert the part of r236495 that introduced checking of SPI_SR_TXEMPTY
for TX transfer completion as for reasons unknown this occasionally
causes SPI_SR_RXBUFF and SPI_SR_ENDRX to not rise.
In any case, once the RX part of the transfer is done it's obvious
that the preceding TX part had finished and checking of SPI_SR_TXEMPTY
was introduced to rule out a possible cause for the data corruption
mentioned in r236495 but which didn't turn out to be the problem
anyway.

MFC after:	3 days
2012-06-18 20:14:42 +00:00
Marius Strobl
da20f734c0 Try to bring this file closer to style(9). 2012-06-18 19:47:25 +00:00
Marius Strobl
352a43b07f Unbreak after r236658 by comparing the right things. 2012-06-18 19:22:10 +00:00
Alan Cox
6031c68de4 The page flag PGA_WRITEABLE is set and cleared exclusively by the pmap
layer, but it is read directly by the MI VM layer.  This change introduces
pmap_page_is_write_mapped() in order to completely encapsulate all direct
access to PGA_WRITEABLE in the pmap layer.

Aesthetics aside, I am making this change because amd64 will likely begin
using an alternative method to track write mappings, and having
pmap_page_is_write_mapped() in place allows me to make such a change
without further modification to the MI VM layer.

As an added bonus, tidy up some nearby comments concerning page flags.

Reviewed by:	kib
MFC after:	6 weeks
2012-06-16 18:56:19 +00:00
Warner Losh
6212b9963b Throw this debug behind bootverbose. The information isn't all that
exciting once the initial board bring up is over.
2012-06-16 04:34:46 +00:00
Warner Losh
d94f5b01c2 Remove stray line from merge. 2012-06-15 16:50:32 +00:00
Warner Losh
b44f8e5e1e Make it possible to link together a sam and an rm kernel. The results
aren't very pretty yet, but this takes DELAY and cpu_reset and makes
them pointers.

# I worry that these are set too late in the boot, especially cpu_reset.
2012-06-15 08:37:50 +00:00
Warner Losh
d56a9edddb These options are unused, and can safely be retired. 2012-06-15 08:01:16 +00:00
Warner Losh
dc5f8dab53 This hints file doesn't actually do anything, and besides it is commented
out here.  Remove it.
2012-06-15 07:56:53 +00:00
Warner Losh
e6e7584dcd Collapse the files.at91 and files.at91sam9 back into files.at91.
Create a new option for at91rm9200 support.  Set this option in
std.at91.  Create a new option for the at91sam9 standard devices.  Set
this option in std.at91sam9.  Retire files.at91sam9.  Add options for
at91sam9x25 SoC and SAM9X25EK board, but don't connect it just yet as
the supporting files aren't quite ready.

Note: device at91rm9200 and device at91sam9 are presently mutually
exclusive.
2012-06-15 07:50:26 +00:00
Warner Losh
aa0c93a5ca Fix a global shadowing problem when LINUX_BOOT_ABI was defined. 2012-06-15 07:26:39 +00:00
Warner Losh
1591de53b1 Take half a step closer towards having a unified atmel kernel by
rearranging where we initialize the time counter and putting the
common stubs into a central place.
2012-06-15 06:38:55 +00:00
Warner Losh
56c9c68603 Fix missing straggler for the move to parse_boot_param() 2012-06-14 18:37:00 +00:00
Warner Losh
a6c5f82686 Defines for parsing linux ATAGs lists. 2012-06-14 14:38:55 +00:00
Warner Losh
3590dad094 More Linux boot support. Create arm_dump_avail_init() to initialize
this array either from Linux boot data, when enabled, or in the
typical way that most ports do it.  arm_pyhs_avail_init is coming
soon since it must be a separate function.
2012-06-14 04:18:56 +00:00
Warner Losh
38ac33aa84 Add support for parsing Linux ATAGs such as you'd see from uboot or
redboot.  Support is very preiminary and likely needs some work. Also,
do some minor code shuffling of the FreeBSD /boot/loader metadata
parsing code.  This code is preliminary and should be used with
caution.
2012-06-14 04:16:16 +00:00
Warner Losh
0bb13a26f0 Create default_parse_boot_param which, if FreeBSD /boot/loader support
is enabled, sets values based on the metadata passed in.  Otherwise
fake_preload_metadata is called.  Change the default parse_boot_param
to default_parse_boot_param.  Enable this functionality only on the mv
platform, which is where most of the code is from.

Reviewed by:	cognet, Ian Lapore
2012-06-14 04:09:20 +00:00
Warner Losh
d39655d7a4 Modify all the arm platform files to call parse_boot_param passing in
the boot parameters from initarm first thing.  parse_boot_param parses
the boot arguments and converts them to the /boot/loader metadata the
rest of the kernel uses.  parse_boot_param is a weak alias to
fake_preload_metadata, which all the platforms use now, but may become
more extensive in the future.

Since it is a weak symbol, specific boards may define their own
parse_boot_param to interface to custom boot loaders.

Reviewed by:	cognet@, Ian Lapore
2012-06-14 04:00:30 +00:00
Warner Losh
8cfede30f9 Remove leakage of other patches into last commit. 2012-06-13 16:12:30 +00:00
Fabien Thomas
790fb4edf2 Add ARM callchain support for hwpmc.
Sponsored by: NETASQ
MFC after:	3 days
2012-06-13 06:38:25 +00:00
Warner Losh
ee5cac8ab0 trim trailing whitespace 2012-06-13 05:02:51 +00:00
Warner Losh
5e92d389b2 Final whitespace trim. 2012-06-13 04:59:55 +00:00
Warner Losh
c358d6a2b0 Trim trailing whitespace... 2012-06-13 04:59:00 +00:00
Warner Losh
6a7be52dbe Strip trailing whitespace before other changes. 2012-06-13 04:52:19 +00:00
Warner Losh
c6e675f9e5 Strip trailing whitespace. 2012-06-13 04:40:29 +00:00
Warner Losh
a698b62cf5 trim trailing spaces that have accumulated over the years (these files
served as the basis for too many other platforms).
2012-06-13 04:38:09 +00:00
Andrew Turner
16072bc718 Remove an unneeded increment from initarm. The variable is uninitialised,
is not used in this part of the function and correctly initialised later
when it is used.
2012-06-10 10:40:22 +00:00
Andrew Turner
81bb9913d2 The GUMSTIX-QEMU config file is almost identical to the GUMSTIX config,
include the latter file from the former rather than duplicating it.
2012-06-10 10:37:21 +00:00
Andrew Turner
4ea15b8776 Pull out the common code to initialise proc0 & thread0 from initarm to a
common function.

Reviewed by:	imp
2012-06-10 01:13:04 +00:00