diff options
| author | Simon Glass <sjg@chromium.org> | 2012-03-19 21:59:14 -0700 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2012-03-23 21:27:32 +0100 |
| commit | 3fa4977a9ec7a2e1c7f8c098cbd857dec13936d1 (patch) | |
| tree | 9580fc69fc33278d739e5422eb2fce3963355b06 /README | |
| parent | 9692fd0f70258709e880ce9b75ef1b2dab55e75a (diff) | |
Revert "Add board_pre_console_putc to deal with early console output"
This reverts commit 295d3942b806552503243f5cfb36aec6f1b5a9bf.
It turns that this really doesn't work very nicely. Instead we should
have a pre-console panic function so that we know that further execution
is impossible and we don't need to worry about trampling on UARTs, etc.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 17 |
1 files changed, 0 insertions, 17 deletions
@@ -644,23 +644,6 @@ The following options need to be configured: 'Sane' compilers will generate smaller code if CONFIG_PRE_CON_BUF_SZ is a power of 2 -- Pre-console putc(): - Prior to the console being initialised, console output is - normally silently discarded. This can be annoying if a - panic() happens in this time. - - If the CONFIG_PRE_CONSOLE_PUTC option is defined, then - U-Boot will call board_pre_console_putc() for each output - character in this case, This function should try to output - the character if possible, perhaps on all available UARTs - (it will need to do this directly, since the console code - is not functional yet). Note that if the panic happens - early enough, then it is possible that board_init_f() - (or even arch_cpu_init() on ARM) has not been called yet. - You should init all clocks, GPIOs, etc. that are needed - to get the character out. Baud rates will need to default - to something sensible. - - Safe printf() functions Define CONFIG_SYS_VSNPRINTF to compile in safe versions of the printf() functions. These are defined in |