[U-Boot] [PATCH v2 0/4] Get rid of R_ARM_ABS32 relocation records

Albert ARIBAUD
2013-03-13T21:15:38Z

On Mon, 25 Feb 2013 11:58:56 +0100, Albert ARIBAUD
<albert.u.boot@aribaud.net> wrote:

> R_ARM_ABS32 relocation records cause symbol references
> to be zero before relocation, and become correct only
> after relocation. On the other hand, R_ARM_RELATIVE
> records make references correct before as well as
> after relocation.
>
> This patch series aims at removing all R_ARM_ABS32
> relocations from ARM targets.
>
> the main contributor of R_ARM_ABS32 relocations is the
> support code for linker-lists, aka Linker-Generated
> Arrays. This is due to the fact that LGA start and end
> symbols, used for ranging these arrays, are linker-
> generated symbols, which always relocate as R_ARM_ABS32
> even though they are supposed *not* to be absolute.
>
> V1 of this patch series fixed LGAs so that start or
> end symbols are actually compiler-generated, and thus
> their references are relocated using R_ARM_RELATIVE;
> V2 also fixes crt0 so that BSS start and end references
> do not produce R_ARM_ABS32 relocations either.
>
> With V2, none of the targets built with MAKEALL -a arm
> produces any R_ARM_ABS32 relocation.
>
> This series has been build-tested with ARM (295 targets
> clean) and powerpc (634 targets clean)
>
> Changes in v2:
> - fixed missing .sram memory mapping in OMAP lds
> - removed useless linker script sections in SPL lds files
> - made BSS start and end compiler-generated
> - moved SPL linker script changes to their own commit
> - added KEEP() to all linker files
> - removed spurious change to common/command.c
> - changed empty type from struct {} to char[0]
> - dropped patch to removed board/micronas/vct/u-boot.lds
> - removed all references to u-boot.lst
>
> Albert ARIBAUD (4):
> arm: omap: map u_boot_lists section to .sram
> Remove linker lists (LGAs) from SPL linker scripts
> arm: make __bss_start and __bss_end__ compiler-generated
> Refactor linker-generated arrays
>
> .gitignore | 1 -
> Makefile | 13 +-
> arch/arm/cpu/arm920t/ep93xx/u-boot.lds | 2 +-
> arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds | 6 -
> arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds | 6 -
> arch/arm/cpu/armv7/am33xx/u-boot-spl.lds | 67 ++++++
> arch/arm/cpu/armv7/omap-common/u-boot-spl.lds | 4 -
> arch/arm/cpu/ixp/u-boot.lds | 14 +-
> arch/arm/cpu/u-boot-spl.lds | 93 ++++++++
> arch/arm/cpu/u-boot.lds | 14 +-
> arch/arm/lib/Makefile | 1 +
> arch/arm/lib/bss.c | 39 ++++
> arch/avr32/cpu/u-boot.lds | 2 +-
> arch/blackfin/cpu/u-boot.lds | 2 +-
> arch/microblaze/cpu/u-boot.lds | 2 +-
> arch/mips/cpu/u-boot.lds | 2 +-
> arch/nds32/cpu/n1213/u-boot.lds | 2 +-
> arch/nios2/cpu/u-boot.lds | 2 +-
> arch/powerpc/cpu/74xx_7xx/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc512x/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc5xx/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc5xxx/u-boot-customlayout.lds | 2 +-
> arch/powerpc/cpu/mpc5xxx/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc8220/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc824x/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc8260/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc83xx/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc85xx/u-boot-nand.lds | 2 +-
> arch/powerpc/cpu/mpc85xx/u-boot-nand_spl.lds | 2 +-
> arch/powerpc/cpu/mpc85xx/u-boot.lds | 2 +-
> arch/powerpc/cpu/mpc86xx/u-boot.lds | 2 +-
> arch/powerpc/cpu/ppc4xx/u-boot.lds | 2 +-
> arch/sandbox/cpu/u-boot.lds | 2 +-
> arch/sh/cpu/sh2/u-boot.lds | 2 +-
> arch/sh/cpu/sh3/u-boot.lds | 2 +-
> arch/sh/cpu/sh4/u-boot.lds | 2 +-
> arch/x86/cpu/u-boot.lds | 2 +-
> board/BuS/eb_cpu5282/u-boot.lds | 2 +-
> board/LEOX/elpt860/u-boot.lds | 2 +-
> board/RPXClassic/u-boot.lds | 2 +-
> board/RPXClassic/u-boot.lds.debug | 2 +-
> board/RPXlite/u-boot.lds | 2 +-
> board/RPXlite/u-boot.lds.debug | 2 +-
> board/RPXlite_dw/u-boot.lds | 2 +-
> board/RPXlite_dw/u-boot.lds.debug | 2 +-
> board/RRvision/u-boot.lds | 2 +-
> board/actux1/u-boot.lds | 24 ++-
> board/actux2/u-boot.lds | 24 ++-
> board/actux3/u-boot.lds | 18 +-
> board/adder/u-boot.lds | 2 +-
> board/ait/cam_enc_4xx/u-boot-spl.lds | 4 -
> board/altera/nios2-generic/u-boot.lds | 2 +-
> board/amcc/acadia/u-boot-nand.lds | 2 +-
> board/amcc/bamboo/u-boot-nand.lds | 2 +-
> board/amcc/canyonlands/u-boot-nand.lds | 2 +-
> board/amcc/kilauea/u-boot-nand.lds | 2 +-
> board/amcc/sequoia/u-boot-nand.lds | 2 +-
> board/amcc/sequoia/u-boot-ram.lds | 2 +-
> board/astro/mcf5373l/u-boot.lds | 2 +-
> board/cobra5272/u-boot.lds | 2 +-
> board/cogent/u-boot.lds | 2 +-
> board/cogent/u-boot.lds.debug | 2 +-
> board/cray/L1/u-boot.lds.debug | 2 +-
> board/dave/PPChameleonEVB/u-boot.lds | 2 +-
> board/davinci/da8xxevm/u-boot-spl-da850evm.lds | 5 -
> board/davinci/da8xxevm/u-boot-spl-hawk.lds | 5 -
> board/dvlhost/u-boot.lds | 18 +-
> board/eltec/mhpc/u-boot.lds | 2 +-
> board/eltec/mhpc/u-boot.lds.debug | 2 +-
> board/emk/top860/u-boot.lds | 2 +-
> board/ep88x/u-boot.lds | 2 +-
> board/esd/dasa_sim/u-boot.lds | 2 +-
> board/esd/pmc440/u-boot-nand.lds | 2 +-
> board/esd/tasreg/u-boot.lds | 2 +-
> board/esteem192e/u-boot.lds | 2 +-
> board/evb64260/u-boot.lds | 2 +-
> board/fads/u-boot.lds | 2 +-
> board/flagadm/u-boot.lds | 2 +-
> board/flagadm/u-boot.lds.debug | 2 +-
> board/freescale/m5208evbe/u-boot.lds | 2 +-
> board/freescale/m52277evb/u-boot.lds | 2 +-
> board/freescale/m5235evb/u-boot.lds | 2 +-
> board/freescale/m5249evb/u-boot.lds | 2 +-
> board/freescale/m5253demo/u-boot.lds | 2 +-
> board/freescale/m5253evbe/u-boot.lds | 2 +-
> board/freescale/m5271evb/u-boot.lds | 2 +-
> board/freescale/m5272c3/u-boot.lds | 2 +-
> board/freescale/m5275evb/u-boot.lds | 2 +-
> board/freescale/m5282evb/u-boot.lds | 2 +-
> board/freescale/m53017evb/u-boot.lds | 2 +-
> board/freescale/m5329evb/u-boot.lds | 2 +-
> board/freescale/m5373evb/u-boot.lds | 2 +-
> board/freescale/m54418twr/u-boot.lds | 2 +-
> board/freescale/m54451evb/u-boot.lds | 2 +-
> board/freescale/m54455evb/u-boot.lds | 2 +-
> board/freescale/m547xevb/u-boot.lds | 2 +-
> board/freescale/m548xevb/u-boot.lds | 2 +-
> board/freescale/mx31ads/u-boot.lds | 16 +-
> board/gaisler/gr_cpci_ax2000/u-boot.lds | 2 +-
> board/gaisler/gr_ep2s60/u-boot.lds | 2 +-
> board/gaisler/gr_xc3s_1500/u-boot.lds | 2 +-
> board/gaisler/grsim/u-boot.lds | 2 +-
> board/gaisler/grsim_leon2/u-boot.lds | 2 +-
> board/gen860t/u-boot-flashenv.lds | 2 +-
> board/gen860t/u-boot.lds | 2 +-
> board/genietv/u-boot.lds | 2 +-
> board/genietv/u-boot.lds.debug | 2 +-
> board/hermes/u-boot.lds | 2 +-
> board/hermes/u-boot.lds.debug | 2 +-
> board/hymod/u-boot.lds | 2 +-
> board/hymod/u-boot.lds.debug | 2 +-
> board/icu862/u-boot.lds | 2 +-
> board/icu862/u-boot.lds.debug | 2 +-
> board/idmr/u-boot.lds | 2 +-
> board/ip860/u-boot.lds | 2 +-
> board/ip860/u-boot.lds.debug | 2 +-
> board/ivm/u-boot.lds | 2 +-
> board/ivm/u-boot.lds.debug | 2 +-
> board/korat/u-boot-F7FC.lds | 2 +-
> board/kup/kup4k/u-boot.lds | 2 +-
> board/kup/kup4k/u-boot.lds.debug | 2 +-
> board/kup/kup4x/u-boot.lds | 2 +-
> board/kup/kup4x/u-boot.lds.debug | 2 +-
> board/lwmon/u-boot.lds | 2 +-
> board/lwmon/u-boot.lds.debug | 2 +-
> board/manroland/uc100/u-boot.lds | 2 +-
> board/matrix_vision/mvsmr/u-boot.lds | 2 +-
> board/mbx8xx/u-boot.lds | 2 +-
> board/mbx8xx/u-boot.lds.debug | 2 +-
> board/mousse/u-boot.lds | 2 +-
> board/mpl/pip405/u-boot.lds.debug | 2 +-
> board/mvblue/u-boot.lds | 2 +-
> board/netphone/u-boot.lds | 2 +-
> board/netphone/u-boot.lds.debug | 2 +-
> board/netta/u-boot.lds | 2 +-
> board/netta/u-boot.lds.debug | 2 +-
> board/netta2/u-boot.lds | 2 +-
> board/netta2/u-boot.lds.debug | 2 +-
> board/netvia/u-boot.lds | 2 +-
> board/netvia/u-boot.lds.debug | 2 +-
> board/nx823/u-boot.lds | 2 +-
> board/nx823/u-boot.lds.debug | 2 +-
> board/openrisc/openrisc-generic/u-boot.lds | 2 +-
> board/quantum/u-boot.lds | 2 +-
> board/r360mpi/u-boot.lds | 2 +-
> board/rbc823/u-boot.lds | 2 +-
> board/renesas/sh7752evb/u-boot.lds | 2 +-
> board/renesas/sh7757lcr/u-boot.lds | 2 +-
> board/rsdproto/u-boot.lds | 2 +-
> board/samsung/smdk5250/smdk5250-uboot-spl.lds | 2 +-
> board/samsung/smdk6400/u-boot-nand.lds | 2 +-
> board/sandburst/karef/u-boot.lds.debug | 2 +-
> board/sandburst/metrobox/u-boot.lds.debug | 2 +-
> board/sandpoint/u-boot.lds | 2 +-
> board/sixnet/u-boot.lds | 2 +-
> board/snmc/qs850/u-boot.lds | 2 +-
> board/snmc/qs860t/u-boot.lds | 2 +-
> board/spc1920/u-boot.lds | 2 +-
> board/spd8xx/u-boot.lds | 2 +-
> board/spd8xx/u-boot.lds.debug | 2 +-
> board/stx/stxxtc/u-boot.lds | 2 +-
> board/stx/stxxtc/u-boot.lds.debug | 2 +-
> board/svm_sc8xx/u-boot.lds | 2 +-
> board/tqc/tqm8xx/u-boot.lds | 2 +-
> board/v37/u-boot.lds | 2 +-
> board/vpac270/u-boot-spl.lds | 4 -
> board/w7o/u-boot.lds.debug | 2 +-
> board/xes/xpedite1000/u-boot.lds.debug | 2 +-
> common/cmd_help.c | 2 +-
> config.mk | 2 -
> doc/README.commands | 18 +-
> helper.mk | 64 ------
> include/command.h | 2 +-
> include/configs/am335x_evm.h | 2 +-
> include/configs/pcm051.h | 2 +-
> include/env_callback.h | 2 +-
> include/linker_lists.h | 252 +++++++++++++++++-----
> nand_spl/board/freescale/mpc8536ds/Makefile | 7 +-
> nand_spl/board/freescale/mpc8569mds/Makefile | 7 +-
> nand_spl/board/freescale/mpc8572ds/Makefile | 7 +-
> nand_spl/board/freescale/mx31pdk/Makefile | 7 +-
> nand_spl/board/freescale/mx31pdk/u-boot.lds | 2 +-
> nand_spl/board/freescale/p1010rdb/Makefile | 7 +-
> nand_spl/board/freescale/p1023rds/Makefile | 7 +-
> nand_spl/board/freescale/p1_p2_rdb/Makefile | 7 +-
> nand_spl/board/karo/tx25/Makefile | 7 +-
> nand_spl/board/karo/tx25/u-boot.lds | 2 +-
> nand_spl/board/samsung/smdk6400/u-boot.lds | 2 +-
> spl/.gitignore | 1 -
> spl/Makefile | 8 +-
> 190 files changed, 665 insertions(+), 424 deletions(-)
> create mode 100644 arch/arm/cpu/armv7/am33xx/u-boot-spl.lds
> create mode 100644 arch/arm/cpu/u-boot-spl.lds
> create mode 100644 arch/arm/lib/bss.c
> delete mode 100644 helper.mk

Applied to u-boot-arm/master.

Amicalement,
--
Albert.