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* arm: implement ELF relocationsAlbert Aribaud2010-10-13-3/+5
| | | | | | | | ELF relocation tables generated with linker option -pie can be used to fixup code and data in a single loop at relocation, removing the need for manual fixups anywhere else in the code. Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
* ARM: add relocation supportHeiko Schocher2010-09-19-5/+519
| | | | | | | | | | | | | | | | | | | !! This breaks support for all arm boards !! To compile in old style, you must define CONFIG_SYS_ARM_WITHOUT_RELOC or you can compile with "CONFIG_SYS_ARM_WITHOUT_RELOC=1 ./MAKEALL board" !! This define will be removed soon, so convert your board to use relocation support Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de> Fix boot from NAND for non-ARM systems Signed-off-by: Wolfgang Denk <wd@denx.de>
* ARM (ARM11): add data cache support, test on Qong boardHeiko Schocher2010-09-19-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Add data cache support for arm1136 systems. Enable "cache" command on Qong board and test performance. Test 1: Loading 127 MB of data from NAND flash into RAM: Instr. Cache off on on Data Cache off off on -------------------------------------------------- QONG (ARM11) 177s 95s 43s = x 4.1 Test 2: uncompressing a gzipped image from RAM to RAM (size compressed: 6.5 MiB, uncompressed: 35 MiB): Instr. Cache off on on Data Cache off off on -------------------------------------------------- QONG (ARM11) 1.54s 0.95s 0.18s = x 8.6 Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de>
* ARM V7 (OMAP): add data cache support, test on Beagle boardHeiko Schocher2010-09-19-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add data cache support for ARM V7 systems. Used cache flush functions from linux:arch/arm/mm/cache-v7.S developed from Catalin Marinas. Enable "cache" command on Beagle board and test performance. Test 1: Loading 127 MB of data from NAND flash into RAM: Instr. Cache off on on Data Cache off off on -------------------------------------------------- Beagle (Cortex A8) 116s 106s 30.3s = x 3.8 Test 2: uncompressing a gzipped image from RAM to RAM (size compressed: 6.5 MiB, uncompressed: 35 MiB): Instr. Cache off on on Data Cache off off on -------------------------------------------------- Beagle (Cortex A8) 1.84s 1.64s 0.12s = x 15.3 Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de> Reviewed-by: Ben Gardiner<bengardiner@nanometrics.ca>
* ARM (ARM926ejs): add data cache support, tested on magnesium and tx25 boardHeiko Schocher2010-09-19-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable "cache" command on tx25 and magnesium board and test performance. Test 1: Loading 127 MB of data from NAND flash into RAM: Instr. Cache off on on Data Cache off off on -------------------------------------------------- magnesium 32,6s 22,5s 30s = x 1,09 tx25 (29MB only) 9,69s 5,05s 8,16s = x 1,19 Test 2: uncompressing a gzipped image from RAM to RAM (size compressed: 6.5 MiB, uncompressed: 35 MiB): Instr. Cache off on on Data Cache off off on -------------------------------------------------- magnesium 4,25s 2,08s 1,72s = x 2,47 tx25 4,82s 2,04s 1,84s = x 2,62 Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Alessandro Rubini <rubini@gnudd.com>
* ARM: cp15: setup mmu and enable dcacheHeiko Schocher2010-09-19-0/+51
| | | | | | | | | | | | | | | | | | | | | This has been tested on at91sam9263 and STN8815. Again, I didn't check if it has bad effects on non-arm926 cores. Initially I had a "done" bit to only set up page tables at the beginning. However, since the aligmnent requirement was for the whole object file, this extra integer tool 16kB in BSS, so I chose to remove it. Also, note not all boards use PHYS_SDRAM, but it looks like it's the most used name (more than CONFIG_SYS_DRAM_BASE for example). Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Heiko Schocher <hs@denx.de>
* Save environment data to mmc.Terry Lv2010-09-19-5/+10
| | | | | | | | This patch is to save environment data to mmc card. It uses interfaces defined in generic mmc. Signed-off-by: Terry Lv <r65388@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
* Rename getenv_r() into getenv_f()Wolfgang Denk2010-08-04-1/+1
| | | | | | | | | | | | | | | | | | | 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>
* 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>
* ARM: remove unused VIDEOLFB ATAGMinkyu Kang2010-06-23-40/+3
| | | | | | | | | | | | | ATAG_VIDEOLFB is not used anywhere. The belowing warning is occurred due to this ATAG. [ 0.000000] Ignoring unrecognised tag 0x54410008 This patch fixed it. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Martin Krause <Martin.Krause@tqs.de>
* ARM: add __aeabi_unwind_cpp_pr0() function to avoid linker complaintsWolfgang Denk2010-05-15-0/+5
| | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> Tested-by: Thomas Weber <weber@corscience.de>
* Move lib_$ARCH directories to arch/$ARCH/libPeter Tyser2010-04-13-0/+1823
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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