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author | Franck JULLIEN <franck.jullien@gmail.com> | 2011-03-23 22:07:43 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-03-30 23:22:35 +0200 |
commit | ddd06e264a2f26381811d02d160f4aa708035ac3 (patch) | |
tree | abec20ebbf4aff694895117e0631ec27b74fd45a /arch/nios2/lib/early_printf.c | |
parent | 4b4958dbb73e6fb553aaf91d539ff3e22bfe9e40 (diff) | |
download | barebox-ddd06e264a2f26381811d02d160f4aa708035ac3.tar.gz barebox-ddd06e264a2f26381811d02d160f4aa708035ac3.tar.xz |
Add Nios2 arch support to barebox
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/nios2/lib/early_printf.c')
-rw-r--r-- | arch/nios2/lib/early_printf.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/nios2/lib/early_printf.c b/arch/nios2/lib/early_printf.c new file mode 100644 index 0000000000..637bb73b0d --- /dev/null +++ b/arch/nios2/lib/early_printf.c @@ -0,0 +1,56 @@ +/* + * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <stdio.h> +#include <common.h> +#include <asm/nios2-io.h> +#include <asm/io.h> + +void early_putc(char ch) +{ + struct nios_uart *uart = (struct nios_uart *)NIOS_SOPC_UART_BASE; + + while ((readl(&uart->status) & NIOS_UART_TRDY) == 0); + writel((unsigned char)ch, &uart->txdata); +} + +void early_puts(const char *s) +{ + while (*s != 0) + early_putc(*s++); +} + +int early_printf(const char *fmt, ...) +{ + va_list args; + uint i; + char printbuffer[50]; + + va_start(args, fmt); + + i = vsprintf(printbuffer, fmt, args); + va_end(args); + + early_puts(printbuffer); + + return 0; +} |