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* microblaze: Clean up reset asm codeMichal Simek2011-10-03-20/+5
| | | | | | | | - Remove code copying - Reset address is setup from first stage bootloader - Support reset vector setup on little endian Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Save and restore first unused vectorMichal Simek2011-10-03-2/+4
| | | | | | | | | | | | | Use one memory space to detect little/big endian platforms. The first unused address(0x28) is used instead 0x0 address (reset vectors). Detection rewrited reset vector setup from first stage bootloader. Workflow: 1. Store 0x28 to r7 2. Do little/big endian test 3. Restore r7 to 0x28 Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Setup MB vectors if feature is enable for u-bootMichal Simek2011-10-03-12/+22
| | | | | | | For example: Setup reset vectors if reset address is setup. Setup user exception vector if user exception is enabled Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove debug saving valueMichal Simek2011-10-03-2/+0
| | | | | | Forget to remove debug code. Signed-off-by: Michal Simek <monstr@monstr.eu>
* Timer: Remove reset_timer() for non-Nios2 archesGraeme Russ2011-07-26-6/+1
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* Timer: Remove set_timer completelyGraeme Russ2011-07-26-5/+0
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* microblaze: Fix msr handling in interrupt_handlerMichal Simek2011-02-15-18/+1
| | | | | | | Fix ancient code which worked with MSR in a bad way. Use rtid instruction which enable IRQs and jump. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Disabling interrupt should return 1 if was enabledMichal Simek2011-01-10-1/+4
| | | | | | | | | | Microblaze implement enable/disable interrupts through MSR that's why disable_interrupts function should return 1 when interrupt was enabled. Return 0 when interrupt was disabled. Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Michal Simek <monstr@monstr.eu> Acked-by: Wolfgang Denk <wd@denx.de>
* Switch from archive libraries to partial linkingSebastien Carlier2010-11-17-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Coding Style cleanupWolfgang Denk2010-10-27-1/+1
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated valueWolfgang Denk2010-10-26-0/+1
| | | | | | | | | | | | | | | | | | 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>
* Rename TEXT_BASE into CONFIG_SYS_TEXT_BASEWolfgang Denk2010-10-18-2/+2
| | | | | | | | | | | | 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>
* microblaze: Support little-endian microblaze targetMichal Simek2010-10-12-9/+51
| | | | | | | Microblaze little-endian toolchain should export __MICROBLAZEEL__. Signed-off-by: Michal Simek <monstr@monstr.eu>
* Make sure that argv[] argument pointers are not modified.Wolfgang Denk2010-07-04-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* microblaze: Consolidate cache codeMichal Simek2010-04-16-0/+28
| | | | | | | Merge cpu and lib cache code. Flush cache before disabling. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix interrupt handler codeMichal Simek2010-04-16-17/+11
| | | | | | | It is better to read ivr and react on it than do long parsing from two regs. Interrupt controller returs actual irq number. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Move FSL initialization to board.cMichal Simek2010-04-16-7/+0
| | | | | | Move FSL out of interrupt controller. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Move timer initialization to board.cMichal Simek2010-04-16-7/+2
| | | | | | | 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>
* microblaze: Fix irq.S codeMichal Simek2010-04-16-120/+62
| | | | | | | It is ancient code. There is possible to save several instructions just if we use offset instead of addik Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Move cpu/microblaze/* to arch/microblaze/cpu/*Peter Tyser2010-04-13-0/+824
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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