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* nios2: fix bootm error on fdt argsThomas Chou2010-08-19-1/+1
| | | | | | | | We should check argv[3] only if there are enough args. Otherwise, it might cause invalid memory access fault. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
* nios2: add fdt supportThomas Chou2010-07-12-0/+21
| | | | | | | | This patch adds fdt support to boot linux, followed Michal's work on microblaze. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
* Make sure that argv[] argument pointers are not modified.Wolfgang Denk2010-07-04-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* nios2: fix div64 issue for gcc4Thomas Chou2010-05-28-175/+856
| | | | | | | | | | | | | This patch fixes the run-time error on div64 when built with gcc4, which was reported by jhwu0625 on nios forum. It merges math support from libgcc of gcc4. This patch is copied from nios2-linux. It works with both gcc3 and gcc4. The old mult.c, divmod.c and math.h are removed. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
* nios2: fix no flash, add nand and mmc init in board.cThomas Chou2010-04-24-0/+18
| | | | | | | | | This patch fixes error when CONFIG_SYS_NO_FLASH. And adds nand flash and mmc initialization, which should go before env initialization. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com>
* Move lib_$ARCH directories to arch/$ARCH/libPeter Tyser2010-04-13-0/+550
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>