Commit graph

106 commits

Author SHA1 Message Date
Marek Vasut
b6d5040b0d GCC4.6: Squash warnings in denali_data_eye.c
denali_data_eye.c: In function
'denali_core_search_data_eye':denali_spd_ddr2.c:646: warning: format '%d'
expects type 'int', but argument 2 has type 'long unsigned int'

denali_data_eye.c:320: warning: format '%08lx' expects type 'long unsigned int',
but argument 2 has type 'u32'
denali_data_eye.c:330: warning: format '%08lx' expects type 'long unsigned int',
but argument 2 has type 'u32'
denali_spd_ddr2.c:676: warning: format '%d' expects type 'int', but argument 2
has type 'long unsigned int'
denali_data_eye.c:340: warning: format '%08lx' expects type 'long unsigned int',
but argument 2 has type 'u32'
denali_data_eye.c:350: warning: format '%08lx' expects type 'long unsigned int',
but argument 2 has type 'u32'
denali_data_eye.c:360: warning: format '%08lx' expects type 'long unsigned int',
but argument 2 has type 'u32'

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
2011-10-27 23:54:00 +02:00
Anatolij Gustschin
c4c9fbebae consolidate mdelay by providing a common function for all users
There are several mdelay() definitions in the driver and
board code. Remove them all and provide a common mdelay()
in lib/time.c.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-10-22 01:16:08 +02:00
Mike Frysinger
e2a53458a7 net: drop !NET_MULTI code
This is long over due.  All but two net drivers have been converted, but
those have now been dropped.

The only thing left to do is actually delete all references to NET_MULTI
and code that is compiled when that is not defined.  So here we scrub the
core code.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-10-05 22:22:16 +02:00
Stefan Roese
226502e01b ppc4xx: Flush dcache after DDR2 autocalibration with caches on
Flush the dcache before removing the TLB with caches enabled.
Otherwise this might lead to problems later on, e.g. while booting
Linux (as seen on ICON-440SPe).

Signed-off-by: Stefan Roese <sr@denx.de>
2011-09-19 11:51:21 +02:00
Andreas Bießmann
09c2e90c11 unify version_string
This patch removes the architecture specific implementation of
version_string where possible. Some architectures use a special place
and therefore we provide U_BOOT_VERSION_STRING definition and a common
weak symbol version_string.

Signed-off-by: Andreas Biemann <andreas.devel@googlemail.com>
CC: Mike Frysinger <vapier@gentoo.org>
CC: Peter Pan <pppeterpppan@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-07-28 17:22:53 +02:00
Steven A. Falco
644362c40a PPC405EX CHIP_21 erratum
APM errata CHIP_21 for the 405EX/EXr (from the rev 1.09 document dated
4/27/11) states that rev D processors may wake up with the wrong feature
set.  This patch implements the APM-proposed workaround.

To enable this patch for your board, add the appropriate define for your
CPU to your board header file.  See kilauea.h for more information.  The
following variants are supported:

#define CONFIG_SYS_4xx_CHIP_21_405EX_NO_SECURITY
#define CONFIG_SYS_4xx_CHIP_21_405EX_SECURITY
#define CONFIG_SYS_4xx_CHIP_21_405EXr_NO_SECURITY
#define CONFIG_SYS_4xx_CHIP_21_405EXr_SECURITY

Please note that if you select the wrong define, your board will not
boot, and JTAG will be required to recover.

Tested on custom boards using:

CONFIG_SYS_4xx_CHIP_21_405EX_NO_SECURITY  <sfalco@harris.com>
CONFIG_SYS_4xx_CHIP_21_405EX_SECURITY     <eibach@gdsys.de>

Signed-off-by: Steve Falco <sfalco@harris.com>
Acked-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-05-12 16:10:51 +02:00
Wolfgang Denk
8c4734e9af Revert "PowerPC: Add support for -msingle-pic-base"
This reverts commit 39768f7715.

Reson: it breaks a number of boards with embedded environment as the
code size grows in some places.
2011-04-20 22:11:21 +02:00
Joakim Tjernlund
39768f7715 PowerPC: Add support for -msingle-pic-base
-msingle-pic-base is a new gcc option for ppc and
it reduces the size of my u-boot with 6-8 KB.
While at it, add -fno-jump-tables too to save a
few more bytes.

-msingle-pic-base will be in gcc 4.6, however
backported patches are available at
http://bugs.gentoo.org/show_bug.cgi?id=347281

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2011-04-11 21:38:47 +02:00
Joakim Tjernlund
33ee4c9233 PowerPC: Move -fPIC flag to common place
The -fPIC flag belongs with -mrelocatable, move it there.
Also change -fPIC to -fpic as this produces smaller
binaries.
However, currently -mrelocatable promotes -fpic to -fPIC, a
fix for this is in upcoming gcc 4.6 or you can apply this small
patch to gcc:

diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
index 8da8410..e4b8280 100644
--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
@@ -227,7 +227,8 @@ do {									\
     }									\
 									\
   else if (TARGET_RELOCATABLE)						\
-    flag_pic = 2;							\
+    if (!flag_pic)							\
+      flag_pic = 2;							\
 } while (0)

 #ifndef RS6000_BI_ARCH
--

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2011-04-11 21:36:41 +02:00
Po-Yu Chuang
44c6e6591c rename _end to __bss_end__
Currently, _end is used for end of BSS section.  We want _end to mean
end of u-boot image, so we rename _end to __bss_end__ first.

Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>
2011-03-27 19:18:37 +02:00
Stefan Roese
c722c708ef ppc4xx: Fix compilation breakage in miiphy.c
Patch 8ef583a0 [miiphy: convert to linux/mii.h] introduced a small
problem in the ppc4xx miiphy.c version. This patch fixes this problem.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-01-11 09:56:28 +01:00
Mike Frysinger
8ef583a035 miiphy: convert to linux/mii.h
The include/miiphy.h header duplicates a lot of things from linux/mii.h.
So punt all the things that overlap to keep the API simple and to make
merging between U-Boot and Linux simpler.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-09 18:06:50 +01:00
Joakim Tjernlund
337f5f50f5 PowerPC: Add relocation support for -fpic
By rearranging the linker script we get support for
relocation of -fpic for free.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: Scott Wood <scottwood@freescale.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
2010-12-17 20:25:10 +01:00
Ricardo Ribalda Delgado
d20b999115 xilinx-ppc4xx-generic: Use common u-boot.lds
Use common ppc4xx linker script for xilinx ppc440 and ppc405 related boards.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-12-17 09:44:40 +01:00
Stefan Roese
f7b548adb5 ppc4xx: Clarify comment about boot chip-select in start.S
Ths old comment was quite screwed up. Replace it with a new version
that should be a bit more descriptive.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-12-17 09:43:36 +01:00
Mike Frysinger
882b7d726f do_reset: unify duplicate prototypes
The duplication of the do_reset prototype has gotten out of hand,
and they're not all in sync.  Unify them all in command.h.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-11-28 21:47:24 +01:00
Stefan Roese
7920954bd2 ppc4xx: Flush complete dcache in relocate_code()
When the cache is enabled in SDRAM we need to flush not only the global
data area but also the bd_info struct in relocate_code. This patch now
flushed the complete dcache (all dcache lines) via flush_dcache() instead
of adding a flush_dcache_range() call for bd_info since this is faster.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-11-28 11:07:37 +01:00
Thomas Weber
e03dabe86b powerpc: cmd_ecctest: Use return value of cmd_usage
Use the return value of cmd_usage instead of ignoring this
and returning a 1.

Signed-off-by: Thomas Weber <weber@corscience.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2010-11-27 23:35:14 +01:00
Wolfgang Denk
ee8028b7f1 ppc4xx: Cleanup for partial linking and --gc-sections
This commit adapts 4xx boards for partial linking with --gc-sections.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Tirumala Marri <tmarri@apm.com>
Cc: David Updegraff <dave@cray.com>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: Larry Johnson <lrj@acm.org>
Cc: Peter De Schrijver <p2@mind.be>
Cc: Niklaus Giger <niklaus.giger@netstal.com>
Cc: Daniel Poirot <dan.poirot@windriver.com>
Acked-by: Stefan Roese <sr@denx.de>
2010-11-27 23:35:09 +01:00
Wolfgang Denk
fa11dbe56d arch/powerpc/*/config.mk: make CONFIG_SYS_LDSCRIPT settings work
As we try to get rid of board specific config.mk files we must
provide a way for board specific settings of the LDSCRIPT variable
(path to the linker script) where needed.

We now implement the following hierarchy:

- Highest priority has a "#define CONFIG_SYS_LDCONFIG" in the board
  config file.
- If CONFIG_SYS_LDCONFIG is not set, and the system is booting from
  NAND (CONFIG_NAND_SPL is set), then a board specific linker
  script board/$(BOARDDIR)/u-boot-nand.lds gets used.
- If we are not booting from NAND, we test if a processor specific
  linker script arch/powerpc/cpu/$(CPU)/u-boot.lds exists; if so we
  use that.
- As default, arch/powerpc/config.mk gets used.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: Kumar Gala <kumar.gala@freescale.com>
Cc: Andy Fleming <afleming@gmail.com>
Acked-by: Stefan Roese <sr@denx.de>
2010-11-26 22:08:19 +01:00
Wolfgang Denk
a7186b8073 cpu/ppc4xx/Makefile: build only needed object files
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
2010-11-26 22:08:19 +01:00
Sebastien Carlier
6d8962e814 Switch from archive libraries to partial linking
Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils.  As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".

This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.

The name of each former library archive is preserved except for
extensions which change from ".a" to ".o".  This commit updates
references accordingly where needed, in particular in some linker
scripts.

This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols.  Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.

Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-17 21:02:18 +01:00
Joakim Tjernlund
34bbf61860 PowerPC: Don't destroy fixup table while doing fixups
The fixup procedure just stored a constant value in the
fixup table rather than just adjusting the table.
Although that doesn't seem to do any harm, it prevents
relocation more that once.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2010-11-14 23:25:33 +01:00
Wolfgang Denk
25ddd1fb0a Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value
CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough.  This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool.  In the result, all definitions of this value can be
deleted from the board config files.  We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-26 21:05:30 +02:00
Wolfgang Denk
553f09823c Rename CONFIG_SYS_INIT_RAM_END into CONFIG_SYS_INIT_RAM_SIZE
CONFIG_SYS_INIT_RAM_END was a misnomer as it suggests this might be
some end address; to make the meaning more clear we rename it into
CONFIG_SYS_INIT_RAM_SIZE

No other code changes are performed in this patch, only minor editing
of white space (due to the changed length) and the comments was done,
where noticed.

Note that the code for the PATI and cmi_mpc5xx board configurations
looks seriously broken.  Last known maintainers on Cc:

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Denis Peter <d.peter@mpl.ch>
Cc: Martin Winistoerfer <martinwinistoerfer@gmx.ch>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-26 21:03:25 +02:00
Stefan Roese
f472069fb7 ppc4xx: Change tsr/tcr macros to upper case
Remove uneccessary functions to access the TCR/TSR registers as well.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-10-20 10:07:55 +02:00
Joakim Tjernlund
d1e0b10acc powerpc: do not fixup NULL ptrs
The fixup routine must not fixup NULL pointers.
Problem can be seen by
 char *testfun(void) __attribute__((weak));
 char *(*myfun)(void) = testfun;

Then add
  printf("myfun:%p, &myfun:%p\n", myfun, &myfun);
before relocation and after relocation.
myfun should be NULL in both cases but it is not.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2010-10-18 22:39:37 +02:00
Peter Tyser
52ebd9c1e5 powerpc: Remove warm reset entry point
No boards utilize the warm reset entry point, so remove it.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-10-12 23:01:32 +02:00
Tirumala Marri
1b8fec1393 APM821xx: Add CPU support
APM821XX is a new line of SoCs which are derivatives of
PPC44X family of processors. This patch adds support of CPU, cache,
tlb, 32k ocm, bootstraps, PLB and AHB bus.

Signed-off-by: Tirumala R Marri <tmarri@apm.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-10-04 11:15:02 +02:00
Wolfgang Denk
2e6e1772c0 Merge branch 'next' of /home/wd/git/u-boot/next
Conflicts:
	include/ppc4xx.h

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-09-28 23:30:47 +02:00
Victor Gallardo
ad876fff34 ppc4xx: Disable trace broadcast for 44x non debug mode
By default the trace broadcast is enabled on 44x systems.

To reduce power consumption when instruction tracing is
not needed, disable trace broadcast.

Check External Debug Mode (EDM) bit to detect if it should be
disabled or not.

Resetting system via a debugger will set the DBCR0[EDM] bit.
Resetting via u-boot or OS will not.

Signed-off-by: Victor Gallardo <vgallardo@apm.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:06 +02:00
Stefan Roese
e02d449644 ppc4xx: Cleanup of PVR detection code in cpu.c
This patch cleans the PVR detection code in check_cpu() up a bit.
Basically the strings are better seperated, resulting in an easier
to understand and maintain code version.

The #ifdef's couldn't be removed easily because of two reasons:

- Some SoC revisions have the same PVR, so need a way to differentiate
  between those two SoC's.
- In some case statements registers only available in this SoC variant
  are referenced.

Instead I moved the CONFIG_440 #ifdef a bit, so that 405 platforms don't
add this 440 detection code and vice versa. Resulting in this U-Boot
image size change:

405EX (Kilauea):     408 bytes less
440EPx (Sequoia):    604 bytes less
460EX (Canyonlands): 564 bytes less

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2010-09-23 09:02:06 +02:00
Stefan Roese
550650ddd0 ppc4xx: Use common NS16550 driver for PPC4xx UART
This patch removes the PPC4xx UART driver. Instead the common NS16550
driver is used, since all PPC4xx SoC's use this peripheral device.

The file 4xx_uart.c now only implements the UART clock calculation
function which also sets the SoC internal UART divisors.

All PPC4xx board config headers are changed to use this common NS16550
driver now.

Tested on these boards:
acadia, canyonlands, katmai, kilauea, sequoia, zeus

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:05 +02:00
Stefan Roese
afabb498b7 ppc4xx: Big header cleanup part 2, mostly PPC405 related
This cleanup is done by creating header files for all SoC versions and
moving the SoC specific defines into these special headers. This way the
common header ppc405.h and ppc440.h can be cleaned up finally.

As a part from this cleanup, the GPIO definitions for PPC405EP are
corrected. The high and low parts of the registers (for example
CONFIG_SYS_GPIO0_OSRL vs. CONFIG_SYS_GPIO0_OSRH) have been defined in
the wrong order. This patch now fixes this issue by switching these
xxxH and xxxL values. This brings the GPIO 405EP port in sync with all
other PPC4xx ports.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:05 +02:00
Stefan Roese
5e7abce991 ppc4xx: Big header cleanup, mostly PPC440 related
This patch starts a bit PPC4xx header cleanup. First patch mostly
touches PPC440 files. A later patch will touch the PPC405 files as well.

This cleanup is done by creating header files for all SoC versions and
moving the SoC specific defines into these special headers. This way the
common header ppc405.h and ppc440.h can be cleaned up finally.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:05 +02:00
Stefan Roese
0988776288 ppc4xx: Move gpio.h to ppc4xx-gpio.h since its ppc4xx specific
Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:05 +02:00
Stefan Roese
b36df56115 ppc4xx: Move ppc4xx headers to powerpc include directory
This patch moves some ppc4xx related headers from the common include
directory (include/) to the powerpc specific one
(arch/powerpc/include/asm/). This way to common include directory is not
so cluttered with files.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-23 09:02:05 +02:00
Stefan Roese
8a805df136 ppc4xx/fdt/flash: Change fdt_fixup_nor_flash_node() to not rely on cs size
This patch changes the behaviour of the fdt_fixup_nor_flash_node()
function. Now it doesn't patch the size of the "reg" property with the
chip-select size, but with the size returned from the new function
flash_get_bank_size(). This function will return per weak default the
flash size of the bank (bank = chip-select numer) detected by the flash
driver. If this does not fit your needs, this function may be overridden
by a board specific one.

For this the parameters needed to be changed. So I intentionally squashed
the PPC4xx stuff using this routine into this patch. Otherwise it would
not be git-bisectable anymore.

The board specific function for the AMCC/APM Ebony eval board is now
included in this patch version.

Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Detlev Zundel <dzu@denx.de>
Cc: Gerald Van Baren <vanbaren@cideas.com>
Cc: Wolfgang Denk <wd@denx.de>
2010-09-23 08:49:49 +02:00
Michael Zaidman
800eb09641 POST cleanup.
- Revives POST for blackfin arch;
- Removes redundant code:
     arch/blackfin/lib/post.c
     arch/powerpc/cpu/ppc4xx/commproc.c
     arch/powerpc/cpu/mpc512x/common.c
- fixes up the post_word_{load|store} usage.

Signed-off-by: Michael Zaidman <michael.zaidman@gmail.com>
Acked-by: Detlev Zundel <dzu@denx.de>
Tested-by: Anatolij Gustschin <agust@denx.de>

List of the maintainers of the affected by patch boards:
Cc: Stephan Linz <linz@li-pro.net>
Cc: Denis Peter <d.peter@mpl.ch>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Niklaus Giger <niklaus.giger@netstal.com>
Cc: Larry Johnson <lrj@acm.org>
Cc: Feng Kan <fkan@amcc.com>
2010-09-21 21:39:31 +02:00
Stefan Roese
f3cac53840 ppc4xx: Invalidate d-cache when used as init-ram
We need to invalidate the data cache after it has been used as init-ram.

This problem was detected on the lwmon5 update.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-03 11:14:26 +02:00
Stefan Roese
c1ab75c7d4 ppc4xx: Fix 440EPx bug in reconfigure_pll()
This patch fixes a bug in reconfigure_pll(), where the detection of
the current bootstrap option is wrong. The ICS bits where incorrectly
shifted. This bug was found on the lwmon5 board, which uses bootstrap
option H (I2C bootstrap EEPROM).

Additionally a bit of code was moved into the if statement, since its
only used after later on. No need to run this code all the time.

Also, a few empty lines are added to make the code better readable.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Rupjyoti Sarmah <rsarmah@amcc.com>
Cc: Victor Gallardo <vgallardo@appliedmicro.com>
2010-09-03 11:14:21 +02:00
Mike Frysinger
5700bb6352 miiphy: constify device name
The driver name does not need to be writable, so constify it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
2010-08-09 11:52:29 -07:00
Wolfgang Denk
cdb749778a Rename getenv_r() into getenv_f()
While running from flash, i. e. before relocation, we have only a
limited C runtime environment without writable data segment. In this
phase, some configurations (for example with environment in EEPROM)
must not use the normal getenv(), but a special function.  This
function had been called getenv_r(), with the idea that the "_r"
suffix would mean the same as in the _r_eentrant versions of some of
the C library functions (for example getdate vs. getdate_r, getgrent
vs. getgrent_r, etc.).

Unfortunately this was a misleading name, as in U-Boot the "_r"
generally means "running from RAM", i. e. _after_ relocation.

To avoid confusion, rename into getenv_f() [as "running from flash"]

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
2010-08-04 00:45:36 +02:00
Stefan Roese
be24ef6e8e ppc4xx: Add ECC status info to machine-check exception for IBM DDR2 core
Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23 09:55:03 +02:00
Stefan Roese
58eb869ffc ppc4xx: Add "ecctest" command to test/simulate ECC errors
This patch adds the "ecctest" command to test and simulate ECC errors
(single bit and/or double bit) while running from SDRAM. Currently only
the IBM DDR2 controller is supported (405EX, 440SP(e), 460EX/GT).

This is done by copying and calling functions, modifying the SDRAM
controller operation mode, in internal SRAM/OCM.

For correctable ECC errors (single bit) only the status will be printed
since the DDR2 controller doesn't provide the faulting address:

=> ecctest 1000000 1
Using address 01000000 for 1 bit ECC error injection
ECC: Correctable error

Uncorrectable ECC errors (double bit) will also display the faulting
address:

=> ecctest 1000000 2
Using address 01000000 for 2 bit ECC error injection
ECC: Uncorrectable error at 0x0001000000

To enable this "ecctest" function you need to define CONFIG_CMD_ECCTEST
in the board config header.

Tested on katmai and t3corp.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23 09:54:54 +02:00
Stefan Roese
b995d7cb2c ppc4xx: DDR/ECC: Use correct macros to clear error status
Use the correct macro instead of the hardcoded 0x4c to clear the ECC
status in the 440/460 DDR(2) error status register after ECC
initialization.

Also the non-440 parts (405EX(r) right now) and the IBM DDR PPC variants
(440GX) use a different registers to clear this error status. Use the
correct ones.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23 09:54:28 +02:00
Stefan Roese
eab9800182 ppc4xx: Add CONFIG_DDR_RFDC_FIXED to allow board specific RFDC values
Using this define, a board can define an opimized RFDC value and use
the auto calibration code to "tune" the remaining DDR2 controller
calibration register.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-23 09:54:09 +02:00
Wolfgang Denk
54841ab50c Make sure that argv[] argument pointers are not modified.
The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands.  Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".

This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:

int main (int argc, char **argv)
{
	while (--argc > 0 && **++argv == '-') {
/* ====> */	while (*++*argv) {
			switch (**argv) {
			case 'd':
				debug++;
				break;
			...
			default:
				usage ();
			}
		}
	}
	...
}

The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell.  With the modification, the compiler will prevent this with
an
	error: increment of read-only location '*argv'

N.B.: The code above can be trivially rewritten like this:

	while (--argc > 0 && **++argv == '-') {
		char *arg = *argv;
		while (*++arg) {
			switch (*arg) {
			...

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2010-07-04 23:55:42 +02:00
Stefan Roese
4978e60584 ppc4xx: Cleanup Boot/FLASH TLB reassignment for PPC440/460
Background Info:
Some PPC440/460 boards have caches enabled in the Boot/FLASH TLB (via
init.S) to speed up the boot process. In relocate_code (start.S) the
cache inhibit attribute for this TLB is set to disable cache. This is
needed for the CFI FLASH driver.

This patch now cleans this code up:
- CONFIG_SYS_TLB_FOR_BOOT_FLASH is defined to 0 (default TLB) if not
  defined in the top of this file. This way, we can remove an ugly
  #ifdef in this code.
- Replace complex "#if defined(CONFIG_440EP) || defined(CONFIG_GR)..."
  statement with "#if defined(CONFIG_440)".
- Remove unnecessary cache invalidate calls resulting in faster bootup.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-01 10:26:25 +02:00
Stefan Roese
e9c020df96 ppc4xx: DDR2: Complete RDSS configuration on non-SPD based boards
As described in item #10 of the SDRAM initialization (chapter 22.2.9
of the PPC460EX/EXr/GT users manual), RDSS may need to be adjusted. The
code for this is now factored out and executed for non-SPD based boards
as well.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-01 10:26:15 +02:00
Stefan Roese
066003b2c5 ppc4xx: Enable overwriting of default scan window for IBM DDR2 controller
This patch makes it possible to overwrite the default auto-calibration
scan window (SDRAM_WRDTR.[WDTR], SDRAM_CLKTR.[CKTR] values) with
board specific values. The parameters of the weak default function are
corrected as well. This way we don't need the casts any more.

This feature will be used by an upcoming PPC460GT board port.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-01 10:26:10 +02:00
Stefan Roese
db643773fc ppc4xx: Enable PCIe support without PCI support on PPC440/460
By not defining CONFIG_SYS_PCI_MASTER_INIT and CONFIG_SYS_PCI_TARGET_INIT,
PCI support (host and adapter) will not be enabled. But it's still
possible to use the U-Boot PCI infrastructure for the PCIe ports.

This configuration option is needed for a new 460GT board, which uses
PCIe but has PCI disabled.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-01 10:26:01 +02:00
Stefan Roese
fe7cca715c ppc4xx: Enable booting with Option E on 460EX/EXr/GT
This patch enables booting with option E on the PPC460EX/EXr/GT.
When booting with Option E, the PLL is in bypass, CPR0_PLLC[ENG]=0.
The Software Boot Configuration Procedure is needed to engage the
PLL and perform a chip reset.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-07-01 10:25:56 +02:00
Stefan Roese
e4a95d112e powerpc: Consolidate bootcount_{store|load} for PowerPC
This patch consolidates bootcount_{store|load} for PowerPC by
implementing a common version in arch/powerpc/lib/bootcount.c. This
code is now used by all PowerPC variants that currently have these
functions implemented.

The functions now use the proper IO-accessor functions to read/write the
values.

This code also supports two different bootcount versions:

a) Use 2 separate words (2 * 32bit) to store the bootcounter
b) Use only 1 word (2 * 16bit) to store the bootcounter

Version b) was already used by MPC5xxx.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
          for 83xx parts
Cc: Michael Zaidman <michael.zaidman@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: Anatolij Gustschin <agust@denx.de>
2010-05-06 23:28:48 +02:00
Anatolij Gustschin
fbb0030e38 serial: struct serial_device: add uninit() entry for drivers
Subsequent patch extends mpc512x serial driver to support
multiple PSC ports. The driver will provide an uninit()
function to stop the serial controller and to disable the
controller's clock. Adding uninit() entry to struct serial_device
allows disabling the serial controller after usage of
a stdio serial device.

This patch adds uninit() entry to the struct serial_device
and fixes initialization of this structure in the code
accordingly.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2010-04-24 21:34:07 +02:00
Stefan Roese
a47a12becf Move arch/ppc to arch/powerpc
As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>
2010-04-21 23:42:38 +02:00