u-boot/lib/Makefile
Stefan Roese 7d9cde1031 lib/tiny-printf.c: Add tiny printf function for space limited environments
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: Stefan 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>
2015-11-23 10:56:07 -05:00

97 lines
2.4 KiB
Makefile

#
# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# SPDX-License-Identifier: GPL-2.0+
#
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_RSA) += rsa/
obj-$(CONFIG_LZMA) += lzma/
obj-$(CONFIG_LZO) += lzo/
obj-$(CONFIG_ZLIB) += zlib/
obj-$(CONFIG_BZIP2) += bzip2/
obj-$(CONFIG_TIZEN) += tizen/
obj-$(CONFIG_OF_LIBFDT) += libfdt/
obj-$(CONFIG_FIT) += libfdt/
obj-$(CONFIG_FIT) += libfdt/
obj-$(CONFIG_CMD_DHRYSTONE) += dhry/
obj-$(CONFIG_AES) += aes.o
obj-$(CONFIG_USB_TTY) += circbuf.o
obj-y += crc7.o
obj-y += crc8.o
obj-y += crc16.o
obj-$(CONFIG_ERRNO_STR) += errno_str.o
obj-$(CONFIG_FIT) += fdtdec_common.o
obj-$(CONFIG_$(SPL_)OF_CONTROL) += fdtdec_common.o
obj-$(CONFIG_$(SPL_)OF_CONTROL) += fdtdec.o
obj-$(CONFIG_TEST_FDTDEC) += fdtdec_test.o
obj-$(CONFIG_GZIP) += gunzip.o
obj-$(CONFIG_GZIP_COMPRESSED) += gzip.o
obj-y += initcall.o
obj-$(CONFIG_LMB) += lmb.o
obj-y += ldiv.o
obj-$(CONFIG_LZ4) += lz4_wrapper.o
obj-$(CONFIG_MD5) += md5.o
obj-y += net_utils.o
obj-$(CONFIG_PHYSMEM) += physmem.o
obj-y += qsort.o
obj-y += rc4.o
obj-$(CONFIG_SHA1) += sha1.o
obj-$(CONFIG_SUPPORT_EMMC_RPMB) += sha256.o
obj-$(CONFIG_SHA256) += sha256.o
obj-y += strmhz.o
obj-$(CONFIG_TPM) += tpm.o
obj-$(CONFIG_RBTREE) += rbtree.o
obj-$(CONFIG_BITREVERSE) += bitrev.o
obj-y += list_sort.o
endif
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_OF_LIBFDT) += libfdt/
endif
ifdef CONFIG_SPL_OF_CONTROL
obj-$(CONFIG_OF_LIBFDT) += libfdt/
endif
obj-$(CONFIG_$(SPL_)OF_CONTROL) += fdtdec_common.o
obj-$(CONFIG_$(SPL_)OF_CONTROL) += fdtdec.o
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_SPL_YMODEM_SUPPORT) += crc16.o
obj-$(CONFIG_SPL_NET_SUPPORT) += net_utils.o
endif
obj-$(CONFIG_ADDR_MAP) += addr_map.o
obj-y += hashtable.o
obj-y += errno.o
obj-y += display_options.o
obj-$(CONFIG_BCH) += bch.o
obj-y += crc32.o
obj-y += ctype.o
obj-y += div64.o
obj-y += hang.o
obj-y += linux_compat.o
obj-y += linux_string.o
obj-y += membuff.o
obj-$(CONFIG_REGEX) += slre.o
obj-y += string.o
obj-y += time.o
obj-$(CONFIG_TRACE) += trace.o
obj-$(CONFIG_LIB_UUID) += uuid.o
obj-$(CONFIG_LIB_RAND) += rand.o
ifdef CONFIG_SPL_BUILD
# SPL U-Boot may use full-printf, tiny-printf or none at all
ifdef CONFIG_USE_TINY_PRINTF
obj-$(CONFIG_SPL_SERIAL_SUPPORT) += tiny-printf.o
else
obj-$(CONFIG_SPL_SERIAL_SUPPORT) += vsprintf.o
endif
else
# Main U-Boot always uses the full printf support
obj-y += vsprintf.o
endif
subdir-ccflags-$(CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED) += -O2