Commit graph

206 commits

Author SHA1 Message Date
Masahiro Yamada
dd84058d24 kconfig: add board Kconfig and defconfig files
This commit adds:
 - arch/${ARCH}/Kconfig
    provide a menu to select target boards
 - board/${VENDOR}/${BOARD}/Kconfig or board/${BOARD}/Kconfig
    set CONFIG macros to the appropriate values for each board
 - configs/${TARGET_BOARD}_defconfig
    default setting of each board

(This commit was automatically generated by a conversion script
based on boards.cfg)

In Linux Kernel, defconfig files are located under
arch/${ARCH}/configs/ directory.
It works in Linux Kernel since ARCH is always given from the
command line for cross compile.

But in U-Boot, ARCH is not given from the command line.
Which means we cannot know ARCH until the board configuration is done.
That is why all the "*_defconfig" files should be gathered into a
single directory ./configs/.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:01 -04:00
Masahiro Yamada
afc3929fac sh: unify sh2/sh3/sh4 linker scripts
The linker scripts of sh2/sh3/sh4 are almost the same.
The difference among them is essentially only one line.

They can be consolidated into a single file, arch/sh/cpu/u-boot.lds
by re-writing the diffrent line as follows:

	KEEP(*/start.o	(.text))

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-07-24 12:02:23 +09:00
Masahiro Yamada
8e2615752e bd_info: remove bi_barudrate member from struct bd_info
gd->bd->bi_baudrate is a copy of gd->baudrate.

Since baudrate is a common feature for all architectures,
keep gd->baudrate only.

It is true that bi_baudrate was passed to the kernel in that structure
but it was a long time ago.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Acked-by: Michal Simek <monstr@monstr.eu> (For microblaze)
2014-05-12 15:19:45 -04:00
Masahiro Yamada
994b56616b sh: delete an unused source file
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Acked-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-04-30 07:18:21 +09:00
Baruch Siach
19bb5e4ba0 sh: fix PFC registers definition for SH772{2, 3, 4}
Add missing port X data register, and fix the offset of ports Y and Z.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-03-14 14:49:54 +09:00
Masahiro Yamada
cd2e46cb38 kbuild: add CONFIG_ prefix to USE_PRIVATE_LIBGCC
Before this commit, USE_PRIVATE_LIBGCC was defined in
arch-specific config.mk and referenced in
arch/$(ARCH)/lib/Makefile.

We are not happy about parsing config.mk again and again.
We have to keep the same behavior with a different way.

By adding "CONFIG_" prefix, this macro appears
in include/autoconf.mk, include/spl-autoconf.mk.
(And treating USE_PRIVATE_LIBGCC as CONFIG macro
is reasonable enough.)

Tegra SoC family defined USE_PRIVATE_LIBGCC as "yes"
in arch/arm/cpu/arm720t/tegra*/config.mk,
whereas did not define it in arch/arm/cpu/armv7/tegra*/config.mk.

It means Tegra enables PRIVATE_LIBGCC only for SPL.
We can describe the same behavior by adding

  #ifdef CONFIG_SPL_BUILD
  # define CONFIG_USE_PRIVATE_LIBGCC
  #endif

to include/configs/tegra-common.h.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Warren <twarren@nvidia.com>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
2014-03-07 10:59:06 -05:00
Masahiro Yamada
9b6e2c363f kbuild: fix CROSS_COMPILE settings in config.mk
The syntax
  CROSS_COMIPLE ?= <cross_compiler_prefix>
does not work because config.mk is parsed after
exporting CROSS_COMPILE.

Like Linux Kernel's arch/$(ARCH)/Makefile,
we must write as follows:

  ifeq ($(CROSS_COMPILE),)
  CROSS_COMPILE := <cross_compiler_prefix>
  endif

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-03-04 12:15:30 -05:00
Masahiro Yamada
08f11151c2 sh: merge compiler flag -ffixed-r13
-ffixed-r13 is defined commonly for sh2, sh3, sh4.
Move it to arch/sh/config.mk

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2014-03-04 09:27:40 -05:00
Masahiro Yamada
aceba5a5cf sh: Do not define -ffreestanding twice
-ffreestanding is defined at the top Makefile for all architectures.
Do not define it twice for SH2A.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2014-03-04 09:27:40 -05:00
Nobuhiro Iwamatsu
5fe3aefd3d sh: sh2: Remove CONFIG_SH2A definition from asm/processor.h
SH2 and SH2A use a common header. Both checks are not necessary.
This removes CONFIG_SH2A definition from asm/processor.h.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-01-09 13:22:22 +09:00
Nobuhiro Iwamatsu
6b87abe3ac sh: sh4: Remove CONFIG_SH4A definition from source code
SH4 and SH4A are compatible. But some instructions are different from these.
In Linux kernel, It is treated as a separate CPU, but for now, I think that
there is no need to divide especially in the U-Boot.

This removes CONFIG_SH4A definition from source code, SH4A is treated as SH4.
And this fix white space.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-01-09 12:47:15 +09:00
Nobuhiro Iwamatsu
8f0960e837 sh: sh2: Change CONFIG_SYS_HZ to CONFIG_SH_CMT_CLK_FREQ
CONFIG_SYS_HZ of SH2 is not used as frequency of base timer. This is the
correct clock of CMT.
This changes from CONFIG_SYS_HZ to CONFIG_SH_CMT_CLK_FREQ, in order to use
CONFIG_SYS_HZ as clock of CMT.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2014-01-08 14:59:53 +09:00
Nobuhiro Iwamatsu
b1165adfd5 sh: sh4: Add CONFIG_SH4 definition to config.mk of SH4
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-01-08 14:47:40 +09:00
Nobuhiro Iwamatsu
22e7d66181 sh: sh3: Add CONFIG_SH3 definition to config.mk of SH3
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-01-08 14:47:36 +09:00
Nobuhiro Iwamatsu
14eeb926bb sh: sh2: Add CONFIG_SH2 definition to config.mk of SH2
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-01-08 14:13:55 +09:00
Yoshihiro Shimoda
320cf35080 sh: add support for sh7753evb board
The SH7753 EVB board has SH7753, 512MB DDR3-SDRAM, SPI ROM,
Gigabit Ethernet, and eMMC.

This patch support the following functions:
 - 512MB DDR3-SDRAM, SCIF4, SPI ROM, Gigabit Ethernet, eMMC

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2013-12-18 16:49:08 +09:00
Rob Herring
1b5cf9549f sh: convert to common timer code
Convert sh to use the commmon timer code. Remove reset_timer and
set_timer as they are unused on sh.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-11-04 11:08:10 -05:00
Masahiro Yamada
02b3bf390e sh: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2013-10-31 13:26:45 -04:00
Masahiro Yamada
61698478a3 sh: Do not include start.o in lib$(CPU).o
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2013-10-31 13:26:45 -04:00
Nobuhiro Iwamatsu
a633a18f90 sh: cache: Change cache API to defines as U-Boot
A chache API of SH is developped by reference in linux kernel.
And API was the same as the linux kernel.
This patch change cache API to defines as U-Boot.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2013-10-17 09:34:39 +09:00
Nobuhiro Iwamatsu
b8f1608645 sh: timer: Remove static global variable
"static u16 bit" is not necessary to use this as static global variable.
This patch fixes this.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2013-10-17 09:34:39 +09:00
Nobuhiro Iwamatsu
861bd4bcf7 sh: timer: Mask bit of timer prescaler
timer_init function sets timer prescaler bit.
The previous code so did not mask this bit, this function was to overwrite
the bit. This will fix this problem.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2013-10-17 09:34:38 +09:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Dirk Eibach
b8eee4354f Build arch/$ARCH/lib/bootm.o depending on CONFIG_CMD_BOOTM
MAKEALL is fine for ppc4xx and mpc85xx.
Run checks were done on our controlcenterd hardware.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-07-16 17:44:30 -05:00
Andreas Bießmann
2cb0e55a3c avr32/m68k/microblaze/nds32/nios2/openrisc/sh/sparc: fix do_bootm_linux
Commit 35fc84fa1f broke bootm on avr32. It
requires to call do_bootm_linux() with flag set to BOOTM_STATE_OS_PREP before
calling it again with flag set to BOOTM_STATE_OS_GO.
Fix this by allowing flag set to BOOTM_STATE_OS_PREP, this however will
require a complete refactoring later on.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
[trini: Apply to m68k, microblaze, nds32, nios2, openrisc, sh and sparc]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-02 09:17:17 -04:00
Andreas Bießmann
d2eae43ba8 lib: consolidate hang()
Delete all occurrences of hang() and provide a generic function.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
[trini: Modify check around puts() in hang.c slightly]
Signed-off-by: Tom Rini <trini@ti.com>
2013-05-01 16:41:08 -04:00
Tom Rini
0ce033d258 Merge branch 'master' of git://git.denx.de/u-boot-arm
Albert's rework of the linker scripts conflicted with Simon's making
everyone use __bss_end.  We also had a minor conflict over
README.scrapyard being added to in mainline and enhanced in
u-boot-arm/master with proper formatting.

Conflicts:
	arch/arm/cpu/ixp/u-boot.lds
	arch/arm/cpu/u-boot.lds
	arch/arm/lib/Makefile
	board/actux1/u-boot.lds
	board/actux2/u-boot.lds
	board/actux3/u-boot.lds
	board/dvlhost/u-boot.lds
	board/freescale/mx31ads/u-boot.lds
	doc/README.scrapyard
	include/configs/tegra-common.h

Build tested for all of ARM and run-time tested on am335x_evm.

Signed-off-by: Tom Rini <trini@ti.com>
2013-03-18 14:37:18 -04:00
Simon Glass
a6741bce50 Declare watchdog functions in watchdog.h
These functions are only available for powerpc and are not declared in a
header file. We want to use the rest function in two places (board_f and
board_r), so declare the functions in watchdog.h.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-15 16:13:59 -04:00
Simon Glass
1865286466 Introduce generic link section.h symbol files
We create a separate header file for link symbols defined by the link
scripts. It is helpful to have these all in one place and try to
make them common across architectures. Since Linux already has a similar
file, we bring this in even though many of the symbols there are not
relevant to us.

Each architecture has its own asm/sections.h where symbols specifc to
that architecture can be added. For now everything except AVR32 just
includes the generic header.

One change is needed in arch/avr32/lib/board.c to make this conversion
work.

Reviewed-by: Tom Rini <trini@ti.com> (version 5)
Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-15 16:13:58 -04:00
Simon Glass
3929fb0a14 Replace __bss_end__ with __bss_end
Note this is a tree-wide change affecting multiple architectures.

At present we use __bss_start, but mostly __bss_end__. This seems
inconsistent and in a number of places __bss_end is used instead.

Change to use __bss_end for the BSS end symbol throughout U-Boot. This
makes it possible to use the asm-generic/sections.h file on all
archs.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-15 16:13:54 -04:00
Albert ARIBAUD
ef123c5253 Refactor linker-generated arrays
Refactor linker-generated array code so that symbols
which were previously linker-generated are now compiler-
generated. This causes relocation records of type
R_ARM_ABS32 to become R_ARM_RELATIVE, which makes
code which uses LGA able to run before relocation as
well as after.

Note: this affects more than ARM targets, as linker-
lists span possibly all target architectures, notably
PowerPC.

Conflicts:
	arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
	arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
	arch/arm/cpu/armv7/omap-common/u-boot-spl.lds
	board/ait/cam_enc_4xx/u-boot-spl.lds
	board/davinci/da8xxevm/u-boot-spl-da850evm.lds
	board/davinci/da8xxevm/u-boot-spl-hawk.lds
	board/vpac270/u-boot-spl.lds

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2013-03-12 23:28:40 +01:00
Simon Glass
a987902753 sh: Use generic global_data
Move sh over to use generic global_data.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-02-04 09:05:46 -05:00
Simon Glass
5cb48582ac Add architecture-specific global data
We plan to move architecture-specific data into a separate structure so
that we can make the rest of it common.

As a first step, create struct arch_global_data to hold these fields.
Initially it is empty.

This patch applies to all archs at once. I can split it if this is really
a pain.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-02-01 15:07:49 -05:00
Yoshihiro Shimoda
1a2621bab8 sh: add support for sh7752evb board
The R0P7752C00000RZ board has SH7752, 512MB DDR3-SDRAM, SPI ROM,
Gigabit Ethernet, and eMMC.

This patch supports the following functions:
 - 512MB DDR3-SDRAM, SCIF4, SPI ROM, Gigabit Ethernet, eMMC

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-12-20 13:20:17 +09:00
Yoshihiro Shimoda
867da0d4fe sh: fix trigger_address_error()
The function should set BL bit, but it should not clear other flags.
So, the patch uses set_bl_bit() instead of a local asm code.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-11-30 15:06:04 +09:00
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
Simon Glass
ecd4551f14 sh: Change bi_baudrate and global data baudrate to int
These don't need to be longs, so change them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>
2012-10-19 15:25:44 -07:00
Nobuhiro Iwamatsu
31d4fe8d40 sh: tmu: Removed arch/sh/include/asm/clk.h
asm/clk.h was included get_peripheral_clk_rate function. But this
is not used from anywhere.
This removed asm/clk.h, and deleted include line from arch/sh/lib/time.c

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-08-21 15:00:34 +09:00
Nobuhiro Iwamatsu
d4430426b6 sh: tmu: Changed switch statement to shift operation
Calculation of the bit position using switch statement can substitute
shift operation using ffs.
And removed unsed macro and variable.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-08-21 15:00:34 +09:00
Nobuhiro Iwamatsu
73f35e0b15 sh: tmu: Changed TMU driver using array of structures
This changed into access using array of structure from access to the register
using the definition of the register by macro.
And removed white space.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-08-21 15:00:33 +09:00
Mike Frysinger
47fde91f0c global_data: unify global flag defines
All the global flag defines are the same across all arches.  So unify them
in one place, and add a simple way for arches to extend for their needs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2012-08-09 21:46:32 +02:00
Yoshihiro Shimoda
d185857267 sh: modify checkcpu() for SH-4A
Even if using CPU is SH-4A, the previous code always put "SH4".
This patch fixes it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-08-08 09:50:41 +09:00
Phil Edworthy
99744b7e34 sh: Add SH7269 device and RSK2+SH7269 board
This is an sh2a device (max 266MHz) with FPU, video display
controller (VDC), 8 serial ports, 4 I2C channels, 3 CAN ports,
SD and on-chip USB.

The RSK2+SH7269 board uses the SH7269 processor. It is often
referred to as just rsk7269.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-05-28 09:12:54 +09:00
Nobuhiro Iwamatsu
4eb0b78e76 sh: Add register definition of PFC for SH7734
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-05-28 09:12:53 +09:00
Nobuhiro Iwamatsu
1379c51ea5 sh: Add bit control functions
This provide bit control functions as clrbits_*, setbits_* and
clrsetbits_*.

V2: Fix comment style and error of whitespace.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-05-28 09:12:53 +09:00
Nobuhiro Iwamatsu
2a57e7ec96 sh: Add support Renesas SH7734
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-05-28 09:12:53 +09:00
Mike Frysinger
de30122bb5 net: move bootfile init into eth_initialize
All arches init this the same way, so move the logic into the core
net code to avoid duplicating it everywhere else.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2012-05-15 17:32:33 -05:00
Mike Frysinger
50a47d0523 net: punt bd->bi_ip_addr
This field gets read in one place (by "bdinfo"), and we can replace
that with getenv("ipaddr").  After all, the bi_ip_addr field is kept
up-to-date implicitly with the value of the ipaddr env var.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2012-05-15 17:32:05 -05:00
Wolfgang Denk
f5cdc11775 Prepare v2012.04-rc2; minor Coding Style cleanup
Signed-off-by: Wolfgang Denk <wd@denx.de>
2012-04-16 23:13:51 +02:00
Nobuhiro Iwamatsu
e1bc28f02a sh: Add header file of MMC framework
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-03-26 10:09:31 +09:00
Nobuhiro Iwamatsu
068abf0c4c sh: Add header file for interface of SH MMC
This defines the mmcif_mmc_init which is an MMC function of SH.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-03-26 10:09:31 +09:00
Nobuhiro Iwamatsu
78df8c68cd sh: timer: Remove unnecessary variable 'ticks'
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-03-08 10:26:38 +09:00
Wolfgang Denk
6b62b9a31d Coding Style cleanup
Fix trailing white space, indentation by spaces instead of TABs,
excessive blank lines, trailing blank lines.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-12-19 12:03:40 +01:00
Nobuhiro Iwamatsu
bead86a836 sh: Add support Renesas SH7724
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-12-02 13:46:21 +09:00
Mike Frysinger
172106433b sh: avoid multiple definition errors with cache funcs
Recent builds for SH4 boards fail with a lot of errors like:
	cmd_mem.o: In function 'dcache_invalid_range':
	include/asm/cache.h:25: multiple definition of 'dcache_invalid_range'
	include/asm/cache.h:25: first defined here

This is due to the funcs being defined in the header, but not static
or inline or extern.  So move them to the sh4-specific cache.c file.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-12-02 13:46:21 +09:00
Phil Edworthy
cb4046c592 sh: Add ashrsi3 libgcc function
The ashrsi3 function is used by some commands that aren't in SH2A
default configs (e.g. JFFS2).

The ashrsi3.S file has been copied from Linux.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-12-02 13:46:20 +09:00
Mike Frysinger
4cde1740d2 sh: only add -mno-fdpic if the compiler supports it
Not all SuperH toolchains support -mno-fdpic.  Chances are good that if
the flag doesn't work, it isn't defaulting to the FDPIC ABI, so the flag
isn't needed.  So only add it if it is actually supported.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-12-02 13:46:20 +09:00
Helmut Raiger
9660e442de cosmetic: s/BOARD_LATE_INIT/CONFIG_BOARD_LATE_INIT
This renames BOARD_LATE_INIT to CONFIG_BOARD_LATE_INIT.
Along the way it removes some leftover

 #define BOARD_LATE_INIT		1

and adds some basic documentation for board specific
callbacks in README.

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
Acked-by: Stefano Babic <sbabic@denx.de>
2011-10-27 23:53:59 +02:00
Anton Staaf
2482e3c836 sh: cache: define ARCH_DMA_MINALIGN for DMA buffer alignment
Signed-off-by: Anton Staaf <robotboy@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-10-23 20:50:42 +02:00
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
Mike Frysinger
476af299b0 image: push default arch values to arch headers
This pushes the ugly duplicated arch ifdef lists we maintain in various
image related files out to the arch headers themselves.

Acked-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Tested-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-10-05 22:22:15 +02:00
Graeme Russ
9558b48af0 console: Implement pre-console buffer
Allow redirection of console output prior to console initialisation to a
temporary buffer.

To enable this functionality, the board (or arch) must define:
 - CONFIG_PRE_CONSOLE_BUFFER - Enable pre-console buffer
 - CONFIG_PRE_CON_BUF_ADDR - Base address of pre-console buffer
 - CONFIG_PRE_CON_BUF_SZ - Size of pre-console buffer (in bytes)

The pre-console buffer will buffer the last CONFIG_PRE_CON_BUF_SZ bytes
Any earlier characters are silently dropped.
2011-10-05 22:03:09 +02:00
Yoshihiro Shimoda
fe0ddffac1 sh: add calling mmc_initialize in board.c
Some SH have MMC controller. So, if we need it, we have to call
the mmc_initialize().

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-08-22 13:16:09 +09:00
Nobuhiro Iwamatsu
8cc44418b8 sh: sh2a: Add sh2a optimize to config.mk
Only the optimization of sh2 had been supported up.
This adds the optimization of sh2a.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-08-22 13:16:08 +09:00
Phil Edworthy
eeb84df6e4 sh: Add support for SH2A freestanding build
SH2A toolchains often only provide an fdpic version of libgcc. This
can't be used with bare-metal software like U-Boot, so this patch
provides the necessary functions extracted from libgcc.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-08-22 13:16:08 +09:00
Phil Edworthy
7fbeb6422d sh: Add Renesas rsk7264 board
The rsk7264 (also know as rsk2+sh7264) is an SH2A based board
with 64MB NAND flash and 64MB SDRAM. It is very similar to the
rsk7203 board.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-08-22 13:16:08 +09:00
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
Graeme Russ
4769be21cc Timer: Remove reset_timer() for non-Nios2 arches 2011-07-26 14:53:30 +02:00
Graeme Russ
5c8404aff1 Timer: Remove set_timer completely 2011-07-26 14:52:17 +02:00
Scott Wood
83b7e2a7f2 Handle most LDSCRIPT setting centrally
Currently, some linker scripts are found by common code in config.mk.
Some are found using CONFIG_SYS_LDSCRIPT, but the code for that is
sometimes in arch config.mk and sometimes in board config.mk.  Some
are found using an arch-specific rule for looking in CPUDIR, etc.

Further, the powerpc config.mk rule relied on CONFIG_NAND_SPL
when it really wanted CONFIG_NAND_U_BOOT -- which covered up the fact
that not all NAND_U_BOOT builds actually wanted CPUDIR/u-boot-nand.lds.

Replace all of this -- except for a handful of boards that are actually
selecting a linker script in a unique way -- with centralized ldscript
finding.

If board code specifies LDSCRIPT, that will be used.
Otherwise, if CONFIG_SYS_LDSCRIPT is specified, that will be used.

If neither of these are specified, then the central config.mk will
check for the existence of the following, in order:

$(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT)
$(TOPDIR)/$(CPUDIR)/u-boot-nand.lds (only if CONFIG_NAND_U_BOOT)
$(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
$(TOPDIR)/$(CPUDIR)/u-boot.lds

Some boards (sc3, cm5200, munices) provided their own u-boot.lds that
were dead code, because they were overridden by a CPUDIR u-boot.lds under
the old powerpc rules.  These boards' own u-boot.lds have bitrotted and
no longer work -- these lds files have been removed.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Tested-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-30 00:59:47 +02:00
Wolfgang Denk
8ae86b76c6 Make STANDALONE_LOAD_ADDR configurable per board
Rename STANDALONE_LOAD_ADDR into CONFIG_STANDALONE_LOAD_ADDR
and allow that the architecture-specific default value gets
overwritten by defining the value in the board header file.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Tsi Chung Liew <tsi-chung.liew@freescale.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-04-12 22:58:32 +02:00
Wolfgang Denk
14666418e9 Coding Style cleanup: remove trailing empty lines
Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-03-27 21:48:08 +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
Haiying Wang
6dc1eceb9c Introduce a new linker flag LDFLAGS_FINAL
commit 8aba9dceeb
Divides variable of linker flags to LDFLAGS-u-boot and LDFLAGS

breaks the usage of --gc-section to build nand_spl. We still need linker option
--gc-section for every uboot image, not only the main one. LDFLAGS_FINAL passes
the --gc-sections to each uboot image.

To get the proper linker flags, we use LDFLAGS and LDFLAGS_FINAL to replace
PLATFORM_LDFLAGS in the Makefile of each nand_spl board.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
2011-03-22 23:32:06 +01:00
Nobuhiro Iwamatsu
b52da2aed8 sh: Add KEEP order to start.o section
The start.o section is changed by --gc-section option of ld.
Of this using KEEP order, therefore, evade this problem.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-03-16 10:16:34 +09:00
Nobuhiro Iwamatsu
40c477082f sh: Add handling of CONFIG_SYS_NO_FLASH for board.c
Some board of SH does not have flash memoy.
This revises it to initialize Flash when CONFIG_SYS_NO_FLASH is not
defined.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-03-16 10:16:34 +09:00
Yoshihiro Shimoda
8e9c897b21 sh: add support for sh7757lcr board
The R0P7757LC0030RL board has SH7757, 256MB DDR3-SDRAM, SPI ROM,
Ethernet, and more.

This patch supports the following functions:
 - 256MB DDR3-SDRAM
 - SPI ROM
 - Ethernet

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-02-02 16:38:41 +09:00
Yoshihiro Shimoda
36781e4897 sh: add support the CONFIG_SYS_LDSCRIPT
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-02-02 16:38:41 +09:00
Nobuhiro Iwamatsu
8aba9dceeb Divides variable of linker flags to LDFLAGS-u-boot and LDFLAGS
Linker needs to use the proper endian/bfd flags even when doing partial linking.
LDFLAGS_u-boot sets linker option which is called it when U-boot is built
(u-boot final).
LDFLAGS sets necessary option by partial linking (use in cmd_link_o_target).

CC: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-01-25 22:22:30 +01:00
Peter Tyser
eddf52b593 Replace "FLASH" strings with "Flash" or "flash"
There's no compelling reason to have the output on bootup or the
"flinfo" command print "flash" in uppercase, so use the proper case
where appropriate.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2011-01-19 00:02:37 +01:00
Nobuhiro Iwamatsu
45ce6f9e35 sh: Add support zimageboot command for Renesas SH
Curent U-Boot can boot zImage by use the "go" command.
But this is not right method. And this method can not set command-line
to linux kernel.
zimageboot sets command-line in environment of u-boot in linux kernel,
and provides function to boot it.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2011-01-11 21:03:26 +09:00
Nobuhiro Iwamatsu
9980df5616 sh: Divided macro for zImage and add asm/zimage.h
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2011-01-11 21:03:26 +09:00
Nobuhiro Iwamatsu
858e8977eb sh: Delete the function that was not necessary
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2011-01-11 21:03:25 +09:00
Nobuhiro Iwamatsu
efc0ba4395 sh: Remove SCIF/SCI register infomation
The register information of SCIF/SCI was compiled
by drivers/serial/serial_sh.h.
Therefore, these are not necessary.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-01-11 21:03:25 +09:00
Nobuhiro Iwamatsu
c4176c43a1 sh: Add support showing KByte of flash memory size
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-01-11 21:03:25 +09:00
Nobuhiro Iwamatsu
f3a7b9535b sh: Add support SH7706
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2011-01-11 21:03:25 +09:00
John Rigby
2956532625 Move DECLARE_GLOBAL_DATA_PTR to file scope
It can be optimised out by the compiler otherwise resulting
in obscure errors like a board not booting.

This has been documented in README since 2006 when these were
first fixed up for GCC 4.x.

Signed-off-by: John Rigby <john.rigby@linaro.org>

Fix some additional places.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-By: Albert ARIBAUD <albert.aribaud@free.fr>
2010-12-21 11:33:36 +01:00
Nobuhiro Iwamatsu
2024b968ee sh: Fix build in start.S
By commit 6d8962e814,
label of _start was not usable in start.S and build fail.
This change label from  _start to _sh_start.

----
arch/sh/cpu/sh4/libsh4.o: In function `_start':
(.text+0x204): multiple definition of `_start'
arch/sh/cpu/sh4/start.o:(.text+0x0): first defined here
----

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2010-11-30 09:30:26 +09:00
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
2e5167ccad Replace CONFIG_RELOC_FIXUP_WORKS by CONFIG_NEEDS_MANUAL_RELOC
By now, the majority of architectures have working relocation
support, so the few remaining architectures have become exceptions.
To make this more obvious, we make working relocation now the default
case, and flag the remaining cases with CONFIG_NEEDS_MANUAL_RELOC.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2010-10-29 21:32:07 +02:00
Wolfgang Denk
071bc92330 Coding Style cleanup
Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-27 22:48:30 +02:00
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
Nobuhiro Iwamatsu
de03f8bc4a sh: Fix warning about uninitialized value of ramdisk_flags
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2010-10-21 10:42:23 +09:00
Nobuhiro Iwamatsu
006442b352 sh: Rename TEXT_BASE to CONFIG_SYS_TEXT_BASE
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2010-10-21 10:42:23 +09:00
Nobuhiro Iwamatsu
cf2c87d322 sh: Add support load and boot of Initrd.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2010-10-21 10:42:23 +09:00
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
ea882baf9c New implementation for internal handling of environment variables.
Motivation:

* Old environment code used a pessimizing implementation:
  - variable lookup used linear search => slow
  - changed/added variables were added at the end, i. e. most
    frequently used variables had the slowest access times => slow
  - each setenv() would calculate the CRC32 checksum over the whole
    environment block => slow
* "redundant" envrionment was locked down to two copies
* No easy way to implement features like "reset to factory defaults",
  or to select one out of several pre-defined (previously saved) sets
  of environment settings ("profiles")
* No easy way to import or export environment settings

======================================================================

API Changes:

- Variable names starting with '#' are no longer allowed

  I didn't find any such variable names being used; it is highly
  recommended to follow standard conventions and start variable names
  with an alphanumeric character

- "printenv" will now print a backslash at the end of all but the last
  lines of a multi-line variable value.

  Multi-line variables have never been formally defined, allthough
  there is no reason not to use them. Now we define rules how to deal
  with them, allowing for import and export.

- Function forceenv() and the related code in saveenv() was removed.
  At the moment this is causing build problems for the only user of
  this code (schmoogie - which has no entry in MAINTAINERS); may be
  fixed later by implementing the "env set -f" feature.

Inconsistencies:

- "printenv" will '\\'-escape the '\n' in multi-line variables, while
  "printenv var" will not do that.

======================================================================

Advantages:

- "printenv" output much better readable (sorted)
- faster!
- extendable (additional variable properties can be added)
- new, powerful features like "factory reset" or easy switching
  between several different environment settings ("profiles")

Disadvantages:

- Image size grows by typically 5...7 KiB (might shrink a bit again on
  systems with redundant environment with a following patch series)

======================================================================

Implemented:

- env command with subcommands:

  - env print [arg ...]

    same as "printenv": print environment

  - env set [-f] name [arg ...]

    same as "setenv": set (and delete) environment variables

    ["-f" - force setting even for read-only variables - not
    implemented yet.]

  - end delete [-f] name

    not implemented yet

    ["-f" - force delete even for read-only variables]

  - env save

    same as "saveenv": save environment

  - env export [-t | -b | -c] addr [size]

    export internal representation (hash table) in formats usable for
    persistent storage or processing:

	-t:	export as text format; if size is given, data will be
		padded with '\0' bytes; if not, one terminating '\0'
		will be added (which is included in the "filesize"
		setting so you can for exmple copy this to flash and
		keep the termination).
	-b:	export as binary format (name=value pairs separated by
		'\0', list end marked by double "\0\0")
	-c:	export as checksum protected environment format as
		used for example by "saveenv" command
	addr:	memory address where environment gets stored
	size:	size of output buffer

	With "-c" and size is NOT given, then the export command will
	format the data as currently used for the persistent storage,
	i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
	prepend a valid CRC32 checksum and, in case of resundant
	environment, a "current" redundancy flag. If size is given, this
	value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
	checksum and redundancy flag will be inserted.

	With "-b" and "-t", always only the real data (including a
	terminating '\0' byte) will be written; here the optional size
	argument will be used to make sure not to overflow the user
	provided buffer; the command will abort if the size is not
	sufficient. Any remainign space will be '\0' padded.

        On successful return, the variable "filesize" will be set.
        Note that filesize includes the trailing/terminating '\0'
        byte(s).

        Usage szenario: create a text snapshot/backup of the current
	settings:

		=> env export -t 100000
		=> era ${backup_addr} +${filesize}
		=> cp.b 100000 ${backup_addr} ${filesize}

	Re-import this snapshot, deleting all other settings:

		=> env import -d -t ${backup_addr}

  - env import [-d] [-t | -b | -c] addr [size]

    import external format (text or binary) into hash table,
    optionally deleting existing values:

	-d:	delete existing environment before importing;
		otherwise overwrite / append to existion definitions
	-t:	assume text format; either "size" must be given or the
		text data must be '\0' terminated
	-b:	assume binary format ('\0' separated, "\0\0" terminated)
	-c:	assume checksum protected environment format
	addr:	memory address to read from
	size:	length of input data; if missing, proper '\0'
		termination is mandatory

  - env default -f

    reset default environment: drop all environment settings and load
    default environment

  - env ask name [message] [size]

    same as "askenv": ask for environment variable

  - env edit name

    same as "editenv": edit environment variable

  - env run

    same as "run": run commands in an environment variable

======================================================================

TODO:

- drop default env as implemented now; provide a text file based
  initialization instead (eventually using several text files to
  incrementally build it from common blocks) and a tool to convert it
  into a binary blob / object file.

- It would be nice if we could add wildcard support for environment
  variables; this is needed for variable name auto-completion,
  but it would also be nice to be able to say "printenv ip*" or
  "printenv *addr*"

- Some boards don't link any more due to the grown code size:
  DU405, canyonlands, sequoia, socrates.

	=> cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
	       Stefan Roese <sr@denx.de>,
	       Heiko Schocher <hs@denx.de>

- Dropping forceenv() causes build problems on schmoogie

	=> cc: Sergey Kubushyn <ksi@koi8.net>

- Build tested on PPC and ARM only; runtime tested with NOR and NAND
  flash only => needs testing!!

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>,
Cc: Stefan Roese <sr@denx.de>,
Cc: Heiko Schocher <hs@denx.de>
Cc: Sergey Kubushyn <ksi@koi8.net>
2010-09-19 19:29:48 +02:00
Wolfgang Denk
91a76751a0 Make getenv() work before relocation.
So far, getenv() would work before relocation is most cases, even
though it was not intended to be used that way.  When switching to a
hash table based implementation, this would break a number of boards.

For convenience, we make getenv() check if it's running before
relocation and, if so, use getenv_f() internally.

Note that this is limited to simple cases, as we use a small static
buffer (32 bytes) in the global data for this purpose.

For this reason, it is also not a good idea to convert all current
uses of getenv_f() into getenv() - some of the existing use cases need
to be able to deal with longer variable values, so getenv_f() is still
needed and recommended for use before relocation.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-09-19 19:29:48 +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
Nobuhiro Iwamatsu
754613f740 sh: Add trigger_address_error and support cpu reset
This add support cpu reset by trigger_address_error function.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2010-06-28 11:58:34 +09:00
Nobuhiro Iwamatsu
9a1e3e9fe3 sh: Fix path of irqflags.h
This changes path of irqflags.h from linux/ to asm/.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2010-06-28 11:58:34 +09:00
Nobuhiro Iwamatsu
61973afc59 sh: Fix overflow problem in get_ticks
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2010-06-28 11:58:33 +09:00
Peter Tyser
8f0fec74ac sh: Move cpu/$CPU to arch/sh/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:17 +02:00
Peter Tyser
819833af39 Move architecture-specific includes to arch/$ARCH/include/asm
This helps to clean up the include/ directory so that it only contains
non-architecture-specific headers and also matches Linux's directory
layout which many U-Boot developers are already familiar with.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:12 +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