u-boot/drivers/bios_emulator
Masahiro Yamada b44b30260f printk: collect printk stuff into <linux/printk.h> with loglevel support
When we import code from Linux, with regular re-sync planned, we want
to use printk() and pr_*().  U-Boot does not support them in a clean
way.  So, people end up with local macros, or compat headers here and
there, then we occasionally see build errors of definition conflicts.

We have include/linux/compat.h, but putting all sorts of unrelated
things into a single header is just a temporal workaround.  Hence this
patch, to find the best home for all printk variants.  If you want to
use printk() and friends, please include <linux/printk.h>.  This header
is self-contained, and pulls in only a few headers.

When I was testing this clean-up, I noticed the image size exceeded
its platform limit on some boards.  This is because all pr_*() that
were previously defined as no-op in include/linux/mtd/mtd.h (unless
CONFIG_MTD_DEBUG is set), are now enabled.

To make such boards happy, this commit also implements CONFIG_LOGLEVEL.
The concept is similar to the kernel parameter "loglevel".  (Actually,
the Kconfig help message was taken from kernel-paremeter.txt of Linux)
Messages with a loglevel smaller than console loglevel will be printed.

The difference is the loglevel is build-time determined.  To save the
image size, lower priority pr_*() are compiled out.  I set the default
of CONFIG_LOGLEVEL to 6, i.e. pr_notice and higher priority messages
are compiled in.

I adjusted CONFIG_LOGLEVEL to avoid build error for some boards.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add in SPL_LOGLEVEL that is the same as LOGLEVEL]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-04 10:31:17 -04:00
..
include printk: collect printk stuff into <linux/printk.h> with loglevel support 2017-10-04 10:31:17 -04:00
x86emu Various, accumulated typos collected from around the tree. 2016-10-06 20:57:40 -04:00
atibios.c bios_emulator: Fix cast for 64-bit compilation 2016-10-11 11:55:33 +08:00
besys.c bios_emulator: Correct ordering of includes 2014-12-13 15:08:04 -07:00
bios.c dm: pci: Convert bios_emu to use the driver model PCI API 2016-01-24 12:07:19 +08:00
biosemu.c
biosemui.h bios_emulator: Add an option to enable debugging 2014-11-25 07:11:17 -07:00
Makefile Various Makefiles: Add SPDX-License-Identifier tags 2015-11-10 09:19:52 -05:00