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7d9cde1031
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>
49 lines
748 B
C
49 lines
748 B
C
/*
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* (C) Copyright 2007 Semihalf
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*
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* Written by: Rafal Jaworowski <raj@semihalf.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This is is a set of wrappers/stubs that allow to use certain routines from
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* U-Boot's lib in the standalone app. This way way we can re-use
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* existing code e.g. operations on strings and similar.
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*/
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#include <common.h>
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#include <linux/types.h>
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#include <api_public.h>
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#include "glue.h"
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void putc(const char c)
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{
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ub_putc(c);
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}
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void puts(const char *s)
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{
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ub_puts(s);
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}
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void __udelay(unsigned long usec)
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{
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ub_udelay(usec);
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}
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int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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ub_reset();
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return 0;
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}
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void *malloc (size_t len)
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{
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return NULL;
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}
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void hang (void)
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{
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while (1) ;
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}
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