Commit graph

114 commits

Author SHA1 Message Date
Egli, Samuel
820969f370 siemens:cosmetic, dxr2: rename dxr2 to draco
The actual board name is draco and dxr2 is the target name.
In the future we'll have different targets based on draco board.
All changes are purely non-functional and basically rename dxr2
to draco.

One style fix in board.c that existed already before.

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Reviewed-by: Roger Meier <r.meier@siemens.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2014-05-13 19:43:00 -04:00
Egli, Samuel
111c8e4093 siemens: add led cmd for flexible LED control
* remove setting LED in user button function.
   We want to decouple reading user button and setting LED. This
   two things need to be done independently.

 * led cmd can be used to control LEDs that are defined in board file
   having a led cmd, one can easily set LEDs in u-boot shell. For
   example bootcmd can be extended to disable status LED before
   loading kernel.

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2014-05-13 19:43:00 -04:00
Egli, Samuel
823b2c4ce4 siemens: update DDR3 parameters for dxr2
* add parameters for factory and print them at start up to
   facilitate control of right DDR3 settings in EEPROM.

 * cosmetic changes in a couple of printfs

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2014-05-13 19:42:59 -04:00
Egli, Samuel
9fc2ed40cd siemens: cosmetic: remove unused and rename defines
For dxr2 board DXR2_IOCTRL_VAL is set by data in EEPROM. In pxm2
board it does not make sense to have dxr2 as prefix. Replace it with
more meaningful DDR prefix.

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Pascal Bach <pascal.bach@siemens.com>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2014-05-13 19:42:59 -04:00
Yegor Yefremov
4b97bcbe20 am33xx: add SSC enable macro
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
2014-05-13 19:42:59 -04:00
Stefan Roese
ec716e33d6 arm: am335x: DXR2: Move unconditional LAN9303 reset into command
The switch HW reset results in a disconnection of the switch port daisy-
chain for a few seconds. This is not desired in the normal field use
case. So lets remove this switch reset from the normal bootup sequence
and move it into a board specific command. This way it can be executed
in the development environment when really needed.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Lukas Stockmann <lukas.stockmann@siemens.com>
Cc: Tom Rini <trini@ti.com>
2014-03-12 16:22:12 -04:00
Stefan Roese
cc07294bc7 arm: am335x: DXR2: Reset SMSC LAN9303 switch via GPIO upon bootup
Since the switch may be re-configured for VLAN usage in Linux (or any
other OS), lets reset the switch to its default register values upon
power-up. Otherwise network might not be available in U-Boot.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Roger Meier <r.meier@siemens.com>
Cc: Lukas Stockmann <lukas.stockmann@siemens.com>
Cc: Tom Rini <trini@ti.com>
2014-03-04 09:42:07 -05:00
Mugunthan V N
9c653aad16 drivers: net: cpsw: add support to have phy address from cpsw platform data
Some platforms like AM437x have different EVMs with different phy addresses,
so this patch adds support for passing phy address via cpsw plaform data.
Also renamed phy_id to phy_addr so better understanding of the code.

Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
[trini: Update BuR am335x_igep0033 pcm051_rev3 pcm051_rev1 cm_t335
pengwyn boards]
Signed-off-by: Tom Rini <trini@ti.com>
2014-03-04 09:41:53 -05:00
Lokesh Vutla
965de8b91b ARM: AM33xx+: Update ioregs to pass different values
Currently same value is programmed for all ioregs. This is not
the case for all SoC's like AM4372. So adding a structure for ioregs
and updating in all board files. And also return from config_cmd_ctrl()
and config_ddr_data() functions if data is not passed.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
[trini: Fixup dxr2, cm_t335, adapt pcm051 rev3]
Signed-off-by: Tom Rini <trini@ti.com>
2013-12-18 21:14:18 -05:00
Tom Rini
12115c6ad3 am33xx: Enable D-CACHE on !CONFIG_SYS_DCACHE_OFF
Test on Beaglebone white over cpsw, usb ether and SD card (read and
write), performance increased, crc32 of data matches.

Signed-off-by: Tom Rini <trini@ti.com>
2013-12-12 14:54:12 -05:00
Albert ARIBAUD
f15ea6e1d6 Merge branch 'u-boot/master' into 'u-boot-arm/master'
Conflicts:
	arch/arm/cpu/armv7/rmobile/Makefile
	doc/README.scrapyard

Needed manual fix:
	arch/arm/cpu/armv7/omap-common/Makefile
	board/compulab/cm_t335/u-boot.lds
2013-12-10 22:23:59 +01:00
Heiko Schocher
b89ac72a24 arm, at91: add siemens corvus board
enable support for the siemens AT91SAM9G20 based board corvus.

Signed-off-by: Boris Schmidt <boris.schmidt@siemens.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-12-09 13:21:49 +01:00
Heiko Schocher
0f8bc283a3 arm, at91: add Siemens board taurus and axm
enable support for the siemens AT91SAM9G20 based boards taurus
and axm.

Signed-off-by: Roger Meier <r.meier@siemens.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-12-09 13:21:49 +01:00
Tom Rini
39245c8699 am33xx: Stop modifying certain EMIF4D registers
Based on the definitive guide to EMIF configuration[1] certain registers
that we have been modifying (and are documented registers) should be
left in their reset values rather than modified.  This has been tested
on AM335x GP EVM and Beaglebone White.

[1]: http://processors.wiki.ti.com/index.php/AM335x_EMIF_Configuration_tips
Cc: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Tom Rini <trini@ti.com>
Tested-by: Matt Porter <matt.porter@linaro.org>
2013-12-04 08:11:45 -05:00
Masahiro Yamada
e5c5301f14 Makefile: make directories by Makefile.build
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-11-17 14:11:31 -05:00
Heiko Schocher
6789e84eca i2c, omap24xx: convert driver to new mutlibus/mutliadapter framework
- add omap24xx driver to new multibus/multiadpater support
- adapted all config files, which uses this driver

Tested on the am335x based siemens boards rut, dxr2 and pxm2
posted here:
http://patchwork.ozlabs.org/patch/263211/

Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Tom Rini <trini@ti.com>
Cc: Lars Poeschel <poeschel@lemonage.de>
Cc: Steve Sakoman <sakoman@gmail.com>
Cc: Thomas Weber <weber@corscience.de>
Cc: Tom Rix <Tom.Rix@windriver.com>
Cc: Grazvydas Ignotas <notasas@gmail.com>
Cc: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Cc: Luca Ceresoli <luca.ceresoli@comelit.it>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Ilya Yanok <yanok@emcraft.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Nishanth Menon <nm@ti.com>
Cc: Pali Rohár <pali.rohar@gmail.com>
Cc: Peter Barada <peter.barada@logicpd.com>
Cc: Nagendra T S  <nagendra@mistralsolutions.com>
Cc: Michael Jones <michael.jones@matrix-vision.de>
Cc: Raphael Assenat <raph@8d.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Stefano Babic <sbabic@denx.de>
2013-11-13 06:18:17 +01:00
Samuel Egli
56eb3da43f arm, am335x: update for the siemens boards
- dxr2: define unused pins as input
- do not enable RTC32K OSC on dxr2 board
- update default environment
  - add splashpos=m,m to default environment, so splash screen is always
    centered.
  - adapt environment for bootcount feature
  - add altbootcmd to default environment
- rut: SPL add early reset pulse for eth-phy, maXTouch and display
- rut: display timing aenderungen
- siemens boards: adapt for background color = white
- add boutcount feature for the siemens boards
  store the bootcount in the environment, as we have no softreset
  save registers on this hardware. Use therefore the CONFIG_BOOTCOUNT_ENV
  bootcount driver.
- change spi mode from 3 to 0 for the lcd init
- add gpio pin for lcd reset with state 0 and add mdelay
- siemens boards: use own USB id's
- add dfu serial and device number for siemens boards
  Add for the siemens boards the possibility to define in dfu mode,
  the iSerialNumber and the bcdDevice fields in the USB Device
  descriptor.
- fix upgrade mechanism based on bootcount
  Correct location of saveenv and remove not active variable.

  Add CONFIG_BOOT_RETRY_TIME and CONFIG_RESET_TO_RETRY to
  reboot board in case of empty kernel partition. Without
  these defines an empty kernel partition leads to an
  abort of boot process and one remains in u-boot prompt.

- general cleanup of dxr2, pxm2 and rut boards
  all:
   * Remove net boot from bootcmd
     Ping can cause a crash on boards without ethernet phy.
     net_nfs command is used only for development

   * Add reset at the end of bootcmd
     In order to have an immediate reset of the boot when bootcmd
     fails, add reset at the end of bootcmd.

  rut:
   * add nand_img_size

  dxr2:
   * update nand_img_size

   * ddr3 timings updated with iocontrol property that can be
     modified via eeprom. New default parameters from software
     leveling with draco ES2.

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
Signed-off-by: Roger Meier <r.meier@siemens.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Matthias Michel <matthias.michel@siemens.com>
Cc: Tom Rini <trini@ti.com>
2013-11-12 09:53:59 -05:00
Masahiro Yamada
a79854a90f board: arm: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Vipin Kumar <vipin.kumar@st.com>
Cc: Tom Warren <twarren@nvidia.com>
Cc: Tom Rini <trini@ti.com>
2013-11-01 11:42:12 -04:00
Lukasz Majewski
d6eae7b0b1 usb:g_dnl: Add name parameter to g_dnl_bind_fixup function
New parameter, namely *name has been added to g_dnl_bind_fixup().
It is necessary (for compatibility reasons) to assign new USB idProduct
and idVendor for different usb functions.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Marek Vasut <marex@denx.de>
2013-10-20 23:42:41 +02:00
Wolfgang Denk
16641d52fc Coding Style cleanup: drop some excessive empty lines
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-10-14 16:06:54 -04:00
Heiko Schocher
c0dcece7d9 arm, am335x: add support for 3 siemens boards
add support for the am335x based boards from siemens:

dxr2:
  - DDR3 128MiB
  - NAND 256MiB
  - Ethernet with external Switch SMSC LAN9303
  - no PMIC
  - internal Watchdog
  - DFU support

pxm2:
  - DDR2 512 MiB
  - NAND 1024 MiB
  - PMIC
  - PHY atheros ar803x
  - USB Host
  - internal Watchdog
  - DFU support

rut:
  - DDR3 256 MiB
  - NAND 256 MiB
  - PMIC
  - PHY natsemi dp83630
  - external Watchdog
  - DFU support

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Roger Meier <r.meier@siemens.com>
Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Pascal Bach <pascal.bach@siemens.com>
Cc: Tom Rini <trini@ti.com>
2013-08-28 11:44:59 -04:00
Wolfgang Denk
1b0757eced PPC: remove dead boards (AMX860, c2mon, ETX094, IAD210, LANTEC, SCM)
These boards have long reached EOL, and there has been no indication
of any active users of such hardware for years.  Get rid of the dead
weight.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Wolfgang Grandegger <wg@denx.de>
2012-10-28 20:17:25 +01:00
Marek Vasut
8b493a5236 common: Discard the __u_boot_cmd section
The command declaration now uses the new LG-array method to generate
list of commands. Thus the __u_boot_cmd section is now superseded and
redundant and therefore can be removed. Also, remove externed symbols
associated with this section from include/command.h .

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
2012-10-22 08:29:42 -07:00
Marek Vasut
556751427b common: Add .u_boot_list into all linker files
Add section for the linker-generated lists into all possible linker
files, so that everyone can easily use these lists. This is mostly
a mechanical adjustment.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
2012-10-22 08:29:42 -07:00
Wolfgang Denk
7346e385bc board/siemens/SCM/scm.c: Fix GCC 4.6 build warning
Fix:
scm.c: In function 'config_scoh_cs':
scm.c:400:16: warning: variable 'tmp' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-11-07 22:49:51 +01:00
Wolfgang Denk
cca4e4aec1 Reduce build times
U-Boot Makefiles contain a number of tests for compiler features etc.
which so far are executed again and again.  On some architectures
(especially ARM) this results in a large number of calls to gcc.

This patch makes sure to run such tests only once, thus largely
reducing the number of "execve" system calls.

Example: number of "execve" system calls for building the "P2020DS"
(Power Architecture) and "qong" (ARM) boards, measured as:
	-> strace -f -e trace=execve -o /tmp/foo ./MAKEALL <board>
	-> grep execve /tmp/foo | wc -l

	Before: After:	Reduction:
==================================
P2020DS 20555	15205	-26%
qong	31692	14490	-54%

As a result, built times are significantly reduced, typically by
30...50%.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andy Fleming <afleming@gmail.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Albert Aribaud <albert.aribaud@free.fr>
cc: Graeme Russ <graeme.russ@gmail.com>
cc: Mike Frysinger <vapier@gentoo.org>
Tested-by: Graeme Russ <graeme.russ@gmail.com>
Tested-by: Matthias Weisser <weisserm@arcor.de>
Tested-by: Sanjeev Premi <premi@ti.com>
Tested-by: Simon Glass <sjg@chromium.org>
Tested-by: Macpaul Lin <macpaul@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-11-03 20:44:58 +01:00
Mike Frysinger
464c79207c punt unused clean/distclean targets
The top level Makefile does not do any recursion into subdirs when
cleaning, so these clean/distclean targets in random arch/board dirs
never get used.  Punt them all.

MAKEALL didn't report any errors related to this that I could see.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-10-15 22:20:36 +02:00
Wolfgang Denk
6aac646f58 ARM: remove broken "SMN42" board.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
2011-09-07 21:45:34 +02:00
Joakim Tjernlund
cd8c87756a Fix a few gcc warnings.
Noticed while building all of mpc8xx. Also
constify usage string in timer.c
Warnings fixed are:
timer.c: In function 'timer':
timer.c:189: warning: format not a string literal and no format arguments
timer.c:258: warning: format not a string literal and no format arguments
atm.c: In function 'atmUnload':
atm.c:99: warning: array subscript is above array bounds
atm.c: In function 'atmLoad':
atm.c:65: warning: array subscript is above array bounds
codec.c: In function 'codsp_write_pop_int':
codec.c:678: warning: array subscript is above array bounds
codec.c: In function 'codsp_write_cop_short':
codec.c:585: warning: array subscript is above array bounds
codec.c: In function 'codsp_write_sop_int':
codec.c:512: warning: array subscript is above array bounds

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2011-05-12 23:17:52 +02:00
Joakim Tjernlund
9d8fbd1b20 powerpc, 8xx: Fixup all 8xx u-boot.lds scripts
8xx was left behind when fixing up powerpc linking
scripts to support -fpic.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2011-04-20 22:03:13 +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
Wolfgang Denk
263d5c2f84 Remove redundant config.mk files
Recent cleanup actions resulted in a number of config.mk files that
contained only redundant entries like

	PLATFORM_CPPFLAGS += -I$(TOPDIR)

or settings of variables that were not used anywhere in the code, like

	TEXT_END  = 0xfe080000

Remove these unnecessary files.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Scott McNutt <smcnutt@psyent.com>
Cc: Wolfgang Wegner <w.wegner@astro-kom.de>
Cc: Josef Wagner <Wagner@Microsys.de>
Cc: Tolunay Orkun <torkun@nextio.com>
Cc: Frank Panno <fpanno@delphintech.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Brad Kemp <Brad.Kemp@seranoa.com>
Acked-by: Heiko Schocher<hs@denx.de>
2010-12-09 10:25:56 +01:00
Wolfgang Denk
cd0402a730 8xx: Cleanup for partial linking and --gc-sections
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
2010-11-27 23:35:10 +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
Wolfgang Denk
2ae1824196 Makefile: move all Power Architecture boards into boards.cfg
Clean up Makefile, and drop a lot of the config.mk files on the way.

We now also automatically pick all boards that are listed in
boards.cfg (and with all configurations), so we can drop the redundant
entries from MAKEALL to avoid building these twice.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-18 22:12:04 +02:00
Wolfgang Denk
14d0a02a16 Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE
The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-18 22:07:10 +02:00
Wolfgang Denk
dff07e18e5 CCM: remove code for yet another corpse
The CCM board has long reached EOL, and support for it is no longer
relevant in current versions of U-Boot.  Remove it.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-06 22:22:26 +02:00
Wolfgang Denk
544d97e9aa PCU_E: remove code for yet another corpse
The PCU_E board has long reached EOL, and support for it is no longer
relevant in current versions of U-Boot.  Remove it.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-06 22:22:24 +02:00
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
Wolfgang Denk
47e26b1bf9 cmd_usage(): simplify return code handling
Lots of code use this construct:

	cmd_usage(cmdtp);
	return 1;

Change cmd_usage() let it return 1 - then we can replace all these
ocurrances by

	return cmd_usage(cmdtp);

This fixes a few places with incorrect return code handling, too.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-07-24 20:43:57 +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
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
Peter Tyser
84ad688473 arm: Move cpu/$CPU to arch/arm/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:24 +02:00
Peter Tyser
8d1f268204 ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:16 +02:00
Peter Tyser
78acc472d9 Rename lib_generic/ to lib/
Now that the other architecture-specific lib directories have been
moved out of the top-level directory there's not much reason to have the
'_generic' suffix on the common lib directory.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:04 +02:00
Peter Tyser
ea0364f1bb Move lib_$ARCH directories to arch/$ARCH/lib
Also move lib_$ARCH/config.mk to arch/$ARCH/config.mk

This change is intended to clean up the top-level directory structure
and more closely mimic Linux's directory organization.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:03 +02:00
Peter Tyser
858290178f ppc: Enable full relocation to RAM
The following changes allow U-Boot to fully relocate from flash to
RAM:
 - Remove linker scripts' .fixup sections from the .text section
 - Add -mrelocatable to PLATFORM_RELFLAGS for all boards
 - Define CONFIG_RELOC_FIXUP_WORKS for all boards

Previously, U-Boot would partially relocate, but statically initialized
pointers needed to be manually relocated.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2009-10-03 10:15:45 +02:00
Wolfgang Denk
a89c33db96 General help message cleanup
Many of the help messages were not really helpful; for example, many
commands that take no arguments would not print a correct synopsis
line, but "No additional help available." which is not exactly wrong,
but not helpful either.

Commit ``Make "usage" messages more helpful.'' changed this
partially. But it also became clear that lots of "Usage" and "Help"
messages (fields "usage" and "help" in struct cmd_tbl_s respective)
were actually redundant.

This patch cleans this up - for example:

Before:
	=> help dtt
	dtt - Digital Thermometer and Thermostat

	Usage:
	dtt         - Read temperature from digital thermometer and thermostat.

After:
	=> help dtt
	dtt - Read temperature from Digital Thermometer and Thermostat

	Usage:
	dtt

Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-06-12 20:47:16 +02:00
Jean-Christophe PLAGNIOL-VILLARD
10a451cd57 arm: unify linker script
all arm boards except a few use the same cpu linker script
so move it to cpu/$(CPU)

that could be overwrite in following order
SOC
BOARD
via the corresponding config.mk

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-06-12 20:39:52 +02:00
Heiko Schocher
76756e41cd ppc: cleanup compiler errors/warnings
Current u-boot top of tree builds with warnings/errors for
the following boards:

ads5121 cpci5200 mecp5200 v38b IAD210 MBX MBX860T NX823
RPXClassic debris PN62

following patch solves this.

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2009-03-27 20:23:32 +01:00