Hi Graeme,
On Thu, Sep 1, 2011 at 3:52 AM, Graeme Russ graeme.russ@gmail.com wrote:
Allow redirection of console output prior to console initialisation to a temporary buffer.
To enable this functionality, the board (or arch) must define: - CONFIG_PRE_CONSOLE_BUFFER - Enable pre-console buffer - CONFIG_PRE_CON_BUF_ADDR - Base address of pre-console buffer - CONFIG_PRE_CON_BUF_SZ - Size of pre-console buffer (in bytes)
The pre-console buffer will buffer the last CONFIG_PRE_CON_BUF_SZ bytes Any earlier characters are silently dropped.
Signed-off-by: Graeme Russ graeme.russ@gmail.com
I tested this on a Tegra2 Seaboard.
Tested-by: Simon Glass sjg@chromium.org
Regards, Simon
Grrrr - Repost of V5 with an SoB. There has to be a better way of automating patch updates ;)
Changes since V4 - Fixed typo in README - Made *pre_console* functions in console.c static - Slight tweak to commit message - Some may choose to set the configuration defines at the arch level
Changes since V3 - Fixed blank subject caused by gap between the Cc: list and Date:
Changes since V2 - Cast buffer size to unsigned long to help compilers produce tighter code - Use inline stub functions to reduce #ifdef clutter - Add documentation to README
Changes Since V1 - Implemented circular buffer - Trivial code styl corrections
README | 14 +++++++++ arch/arm/include/asm/global_data.h | 3 ++ arch/avr32/include/asm/global_data.h | 3 ++ arch/blackfin/include/asm/global_data.h | 3 ++ arch/m68k/include/asm/global_data.h | 3 ++ arch/microblaze/include/asm/global_data.h | 3 ++ arch/mips/include/asm/global_data.h | 3 ++ arch/nios2/include/asm/global_data.h | 3 ++ arch/powerpc/include/asm/global_data.h | 3 ++ arch/sh/include/asm/global_data.h | 3 ++ arch/sparc/include/asm/global_data.h | 3 ++ arch/x86/include/asm/global_data.h | 3 ++ common/console.c | 43 +++++++++++++++++++++++++++- 13 files changed, 88 insertions(+), 2 deletions(-)
diff --git a/README b/README index 0886987..cf6c01f 100644
[snip]