1. 20 May, 2016 1 commit
  2. 08 Feb, 2016 1 commit
  3. 23 Nov, 2015 1 commit
    • Stefan Roese's avatar
      lib/tiny-printf.c: Add tiny printf function for space limited environments · 7d9cde10
      Stefan Roese authored
      This patch adds a small printf() version that supports all basic formats.
      Its intented to be used in U-Boot SPL versions on platforms with very
      limited internal RAM sizes.
      
      To enable it, just define CONFIG_USE_TINY_PRINTF in your defconfig. This
      will result in the SPL using this tiny function and the main U-Boot
      still using the full-blown printf() function.
      
      This code was copied from:
      http://www.sparetimelabs.com/printfrevisited
      With mostly only coding style related changes so that its checkpatch
      clean.
      
      The size reduction is about 2.5KiB. Here a comparison for the db-mv784mp-gp
      (Marvell AXP) SPL:
      
      Without this patch:
        58963   18536    1928   79427   13643 ./spl/u-boot-spl
      
      With this patch:
        56542   18536    1956   77034   12cea ./spl/u-boot-spl
      
      Note:
      To make it possible to compile tiny-printf.c instead of vsprintf.c when
      CONFIG_USE_TINY_PRINTF is defined, the functions printf() and vprintf() are
      moved from common/console.c into vsprintf.c in this patch.
      Signed-off-by: default avatarStefan Roese <sr@denx.de>
      Cc: Simon Glass <sjg@chromium.org>
      Cc: Hans de Goede <hdegoede@redhat.com>
      Cc: Tom Rini <trini@konsulko.com>
      Cc: Albert Aribaud <albert.u.boot@aribaud.net>
      7d9cde10
  4. 25 Feb, 2014 2 commits
  5. 19 Feb, 2014 6 commits
    • Masahiro Yamada's avatar
    • Masahiro Yamada's avatar
      kbuild: use Linux Kernel build scripts · 6825a95b
      Masahiro Yamada authored
      Now we are ready to switch over to real Kbuild.
      
      This commit disables temporary scripts:
        scripts/{Makefile.build.tmp, Makefile.host.tmp}
      and enables real Kbuild scripts:
        scripts/{Makefile.build,Makefile.host,Makefile.lib}.
      
      This switch is triggered by the line in scripts/Kbuild.include
        -build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj
        +build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
      
      We need to adjust some build scripts for U-Boot.
      But smaller amount of modification is preferable.
      
      Additionally, we need to fix compiler flags which are
      locally added or removed.
      
      In Kbuild, it is not allowed to change CFLAGS locally.
      Instead, ccflags-y, asflags-y, cppflags-y,
      CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o
      are prepared for that purpose.
      Signed-off-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
      Tested-by: default avatarGerhard Sittig <gsi@denx.de>
      6825a95b
    • Masahiro Yamada's avatar
      kbuild: change out-of-tree build · 9e414032
      Masahiro Yamada authored
      This commit changes the working directory
      where the build process occurs.
      
      Before this commit, build process occurred under the source
      tree for both in-tree and out-of-tree build.
      
      That's why we needed to add $(obj) prefix to all generated
      files in makefiles like follows:
        $(obj)u-boot.bin:  $(obj)u-boot
      
      Here, $(obj) is empty for in-tree build, whereas it points
      to the output directory for out-of-tree build.
      
      And our old build system changes the current working directory
      with "make -C <sub-dir>" syntax when descending into the
      sub-directories.
      
      On the other hand, Kbuild uses a different idea
      to handle out-of-tree build and directory descending.
      
      The build process of Kbuild always occurs under the output tree.
      When "O=dir/to/store/output/files" is given, the build system
      changes the current working directory to that directory and
      restarts the make.
      
      Kbuild uses "make -f $(srctree)/scripts/Makefile.build obj=<sub-dir>"
      syntax for descending into sub-directories.
      (We can write it like "make $(obj)=<sub-dir>" with a shorthand.)
      This means the current working directory is always the top
      of the output directory.
      Signed-off-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
      Tested-by: default avatarGerhard Sittig <gsi@denx.de>
      9e414032
    • Masahiro Yamada's avatar
      Makefile: move some flags to examples makefiles · d9580025
      Masahiro Yamada authored
      This commit moves some flags which are used
      under examples/ directory only.
      Signed-off-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
      d9580025
    • Masahiro Yamada's avatar
      Makfile: move suffix rules to Makefile.build · 5651ccff
      Masahiro Yamada authored
      This commit moves suffix rules from config.mk
      to scripts/Makefile.build, which will allow us
      to switch smoothly to real Kbuild.
      
      Note1:
      post/lib_powerpc/fpu/Makefile has
      its own rule to compile C sources.
      We need to tweak it to keep the same behavior.
      
      Note2:
      There are two file2 with the same name:
      arch/arm/lib/crt0.S and eamples/api/crt0.S.
      To keep the same build behavior,
      examples/api/Makefile also has to be treaked.
      Signed-off-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
      5651ccff
    • Masahiro Yamada's avatar
      4a20df39
  6. 25 Nov, 2013 2 commits
  7. 04 Nov, 2013 1 commit
  8. 24 Jul, 2013 1 commit
  9. 15 Nov, 2011 1 commit
  10. 21 Oct, 2011 1 commit
    • Che-liang Chiou's avatar
      examples: api: allow build with private libgcc · 349e83f0
      Che-liang Chiou authored
      The examples/api is not configured with USE_PRIVATE_LIBGCC.  This makes
      building examples/api break on certain boards that do not/cannot use the
      public libgcc.
      
      Nevertheless, this patch has to also touch the top-level Makefile to fix
      this problem because the current top-level Makefile does not specify
      libgcc as a prerequisite of examples/api, and explicitly builds
      examples/api _before_ libgcc.
      
      For testing this patch, I added the following to configs/seaboard.h and
      ran demo.bin on a Seaboard.
      
      +#define CONFIG_API
      +#define CONFIG_SYS_MMC_MAX_DEVICE 2
      +#define CONFIG_CMD_NET
      +#define CONFIG_NET_MULTI
      Signed-off-by: default avatarChe-Liang Chiou <clchiou@chromium.org>
      Acked-by: default avatarMike Frysinger <vapier@gentoo.org>
      349e83f0
  11. 09 Jan, 2011 1 commit
  12. 04 Jul, 2010 2 commits
    • Wolfgang Denk's avatar
      Make sure that argv[] argument pointers are not modified. · 54841ab5
      Wolfgang Denk authored
      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: default avatarWolfgang Denk <wd@denx.de>
      Acked-by: default avatarMike Frysinger <vapier@gentoo.org>
      54841ab5
    • Wolfgang Denk's avatar
      Make *printf() return "int" instead of "void" · d9c27253
      Wolfgang Denk authored
      Change the return type of the *printf() functions to the standard
      "int"; no changes are needed but returning the already available
      length count.
      
      This will save a few additional strlen() calls later...
      Signed-off-by: default avatarWolfgang Denk <wd@denx.de>
      d9c27253
  13. 21 Apr, 2010 1 commit
  14. 13 Apr, 2010 2 commits
  15. 05 Dec, 2009 1 commit
    • Ingo van Lil's avatar
      Generic udelay() with watchdog support · 3eb90bad
      Ingo van Lil authored
      According to the PPC reference implementation the udelay() function is
      responsible for resetting the watchdog timer as frequently as needed.
      Most other architectures do not meet that requirement, so long-running
      operations might result in a watchdog reset.
      
      This patch adds a generic udelay() function which takes care of
      resetting the watchdog before calling an architecture-specific
      __udelay().
      Signed-off-by: default avatarIngo van Lil <inguin@gmx.de>
      3eb90bad
  16. 27 Jul, 2009 1 commit
  17. 21 Jul, 2009 1 commit