Hi, Can I inquire please what has happened with this patch series? Will it be applied? I have done some basic testing here on Tegra2 and it appears to work.
Regards, Simon On Tue, Mar 8, 2011 at 5:07 AM, Aneesh V <ane...@ti.com> wrote: > With D-cache and MMU enabled for ARM in u-boot it becomes imperative to > support a minimal set of cache maintenance operations and necessary > initializations before enabling MMU. > > This series of patches attempt to do the following for armv7: > * Necessary initialization sequence before enabling MMU that includes > invalidation of TLB, data caches, branch predictor array etc. > * Framework for supporting SOC specific outer caches in a generic manner > (using a structure of function pointers - inspired by the Linux > implementation) > * Generic armv7 cache maintenance operations for caches known to the CPU > * Support for ARM PL310 L2 cache controller used in OMAP4 > * Cleanup of the cleanup_before_linux() function > * Adapting all armv7 SOCs to use the new framework and removing > duplicated code > > Testing: > * Extensive testing on OMAP4430SDP and OMAP3430SDP by creating coherency > issues and solving them using the maintenance routines > - Eg: memfill a region of memory with a known pattern > - Invalidate the region > - Read back and compare the region with the original pattern > - If match fails it means that invalidate is successful > - Now add a flush call just before the invalidate > - If match succeeds it means that flush was successful > - Outer caches were tested with experiments involving making the > function pointers NULL > * Kernel booting on OMAP4430SDP and OMAP3430SDP > Note: v2 has been tested only on OMAP4430SDP > > v2: > * Pointer based callback mechanism for outer cache operations > changed to a weakly linked functions. > * Change -march=armv7-a back to armv5 > * Moved utility macros out of armv7.h > * Added documentation for new CONFIG options. > * Changed implementation of log2n to not use CLZ instruction as armv4 > doesn't support this instruction and newly added Tegra2 uses > -march=armv4 > * Blank line after local variable declarations - fixed globally > * Explicitly added an empty flush_cache() under > #ifdef CONFIG_SYS_NO_DCACHE > * Removed the print inside the weakly linked stub function - > __arm_init_before_mmu > * Fixed signature of flush_cache in cache.c > * More descriptive commit message for the PL310 support patch > * C struct for PL310 register accesses > * Fixed white space issues > > Aneesh V (10): > arm: make default implementation of cache_flush() weakly linked > armv7: add miscellaneous utility macros > armv7: cache maintenance operations for armv7 > armv7: replace CONFIG_L2_OFF with CONFIG_SYS_NO_L2CACHE > armv7: integrate cache maintenance support > arm: minor fixes for cache and mmu handling > armv7: add PL310 support to u-boot > armv7: adapt omap4 to the new cache maintenance framework > armv7: adapt omap3 to the new cache maintenance framework > armv7: adapt s5pc1xx to the new cache maintenance framework > > README | 11 + > arch/arm/cpu/armv7/Makefile | 2 +- > arch/arm/cpu/armv7/cache_v7.c | 390 > +++++++++++++++++++++++++ > arch/arm/cpu/armv7/cpu.c | 51 ++-- > arch/arm/cpu/armv7/omap3/Makefile | 1 - > arch/arm/cpu/armv7/omap3/board.c | 138 ++++++++-- > arch/arm/cpu/armv7/omap3/cache.S | 263 ----------------- > arch/arm/cpu/armv7/omap3/lowlevel_init.S | 32 ++ > arch/arm/cpu/armv7/omap4/lowlevel_init.S | 18 ++ > arch/arm/cpu/armv7/s5pc1xx/cache.S | 88 +----- > arch/arm/cpu/armv7/start.S | 18 +- > arch/arm/include/asm/arch-omap3/omap3.h | 20 ++ > arch/arm/include/asm/arch-omap3/sys_proto.h | 10 +- > arch/arm/include/asm/arch-omap4/sys_proto.h | 1 - > arch/arm/include/asm/arch-s5pc1xx/sys_proto.h | 3 - > arch/arm/include/asm/armv7.h | 68 +++++ > arch/arm/include/asm/pl310.h | 74 +++++ > arch/arm/include/asm/utils.h | 80 +++++ > arch/arm/lib/Makefile | 1 + > arch/arm/lib/board.c | 6 + > arch/arm/lib/cache-cp15.c | 16 +- > arch/arm/lib/cache-pl310.c | 116 ++++++++ > arch/arm/lib/cache.c | 20 +- > include/common.h | 5 +- > include/configs/ca9x4_ct_vxp.h | 2 +- > include/configs/efikamx.h | 2 +- > include/configs/mx51evk.h | 2 +- > include/configs/mx53evk.h | 2 +- > include/configs/omap4_panda.h | 8 +- > include/configs/omap4_sdp4430.h | 8 +- > include/configs/s5pc210_universal.h | 2 +- > include/configs/tegra2-common.h | 2 +- > include/configs/vision2.h | 2 +- > 33 files changed, 1037 insertions(+), 425 deletions(-) > create mode 100644 arch/arm/cpu/armv7/cache_v7.c > delete mode 100644 arch/arm/cpu/armv7/omap3/cache.S > create mode 100644 arch/arm/include/asm/armv7.h > create mode 100644 arch/arm/include/asm/pl310.h > create mode 100644 arch/arm/include/asm/utils.h > create mode 100644 arch/arm/lib/cache-pl310.c > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot >
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