u-boot.git/arch/blackfin/lib, branch v2011.03

Blackfin: make sure bss len is multiple of 4 bytes

2010-11-18T09:38:19Z

The Blackfin on-chip BootROM requires that fill operations (which is used for the bss) be aligned to 4 bytes (base addr and total len). Plus, the Blackfin early init asm code assumes the same thing. So rather than making things work for no real gain, make sure the bss len is padded to 4 bytes in the linker script. Signed-off-by: Mike Frysinger

Blackfin: stick ins/outs funcs into their own .text section

2010-11-18T09:38:19Z

This lets the linker garbage collect these functions when they aren't actually used by placing them into the standard .text. section. Signed-off-by: Mike Frysinger

Switch from archive libraries to partial linking

2010-11-17T20:02:18Z

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

Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value

2010-10-26T19:05:30Z

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 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 Acked-by: Kumar Gala

Blackfin: fix MMC init output alignment

2010-10-02T20:00:40Z

Signed-off-by: Mike Frysinger

Blackfin: move CONFIG_BFIN_CPU to board config.mk

2010-10-02T20:00:38Z

The CONFIG_BFIN_CPU option is largely used in the build system, so move it out of the board config.h and into the board config.mk. It'd be nice to keep everything in the config.h, but the patch to extract that value early was rejected. Signed-off-by: Mike Frysinger

POST cleanup.

2010-09-21T19:39:31Z

- Revives POST for blackfin arch; - Removes redundant code: arch/blackfin/lib/post.c arch/powerpc/cpu/ppc4xx/commproc.c arch/powerpc/cpu/mpc512x/common.c - fixes up the post_word_{load|store} usage. Signed-off-by: Michael Zaidman Acked-by: Detlev Zundel Tested-by: Anatolij Gustschin List of the maintainers of the affected by patch boards: Cc: Stephan Linz Cc: Denis Peter Cc: Matthias Fuchs Cc: Peter Tyser Cc: Stefan Roese Cc: Mike Frysinger Cc: Niklaus Giger Cc: Larry Johnson Cc: Feng Kan

Blackfin: re-use board data in cpu banner

2010-08-11T15:29:19Z

The bi_cpu field of the board data is already set to the relevant cpu string, so there is no need for us to use the define directly. Signed-off-by: Mike Frysinger

Blackfin: shutdown video DMA when booting Linux

2010-08-11T15:29:08Z

In case there is no frame buffer driver present in Linux to hand over the PPI LCD DMA upon boot, the DMA initiated by u-boot to display the splash screen runs unattended. Therefore always stop the video driver in u-boot before starting Linux. If people don't want this behavior, then they can simply stub out the video_stop() function in their board video driver. Signed-off-by: Michael Hennerich Signed-off-by: Mike Frysinger

Rename getenv_r() into getenv_f()

2010-08-03T22:45:36Z

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 Acked-by: Detlev Zundel