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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>
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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>
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All arches except nios2 and microblaze call boot_get_fdt
from bootm_start in common/cmd_bootm.c.
Having nios2 and microblaze do so as well removes code from
their respective do_bootm_linux routines and allows removal of
a nasty ifdef from bootm_start.
In the case where boot_get_fdt returns an error bootm_start
returns and the platform specific do_bootm_linux routines
will never get called.
Also only check argv[3] for an fdt addr if argc > 3 first.
This is already the case for nios2.
Signed-off-by: John Rigby <john.rigby@linaro.org>
CC: Scott McNutt <smcnutt@psyent.com>
CC: Michal Simek <monstr@monstr.eu>
CC: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Tested-by: Thomas Chou <thomas@wytron.com.tw>
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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>
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Microblaze hasn't supported NET_MULTI support.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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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>
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Merge cpu and lib cache code.
Flush cache before disabling.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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There is used max cache size on system which doesn't define
cache size.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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WB cache use different instruction that WT cache but the major code
is that same. That means that wdc.flush on system with WT cache
do the same thing as before.
You need newer toolchain with wdc.flush support.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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env_relocation should be called first.
Added stdio_init too.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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It is more accurate to show that caches are OFF instead of FAIL.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Move FSL out of interrupt controller.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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I would like to handle case where system doesn't contain
intc that's why I need timer initialization out of intc code.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This patch adds FDT (flattened device tree) support to microblaze arch.
Tested with Linux arch/microblaze kernels with and without compiled in
FDT on Xilinx ML506 board.
Signed-off-by: Arun Bhanu <arun@bhanu.net>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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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>
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