8402a1588a
This patch replaces the general alchemy prom_putchar() implementation in favor of board-specific versions: The UART where the output of prom_putchar is directed to really depends on the board, the current implementation hardcodes this on a per-SoC basis which is just wrong. So a generic uart tx function is provided in the alchemy headers, and the boards can provide their own prom_putchar with custom destination uart, and all in-kernel alchemy boards support early printk. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/*
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* Common code used by all Alchemy develboards.
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*
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* Extracted from files which had this to say:
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*
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* Copyright 2000, 2008 MontaVista Software Inc.
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* Author: MontaVista Software, Inc. <source@mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <asm/bootinfo.h>
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#include <asm/mach-au1x00/au1000.h>
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#include <prom.h>
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#if defined(CONFIG_MIPS_PB1000) || defined(CONFIG_MIPS_DB1000) || \
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defined(CONFIG_MIPS_PB1100) || defined(CONFIG_MIPS_DB1100) || \
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defined(CONFIG_MIPS_PB1500) || defined(CONFIG_MIPS_DB1500) || \
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defined(CONFIG_MIPS_BOSPORUS) || defined(CONFIG_MIPS_MIRAGE)
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#define ALCHEMY_BOARD_DEFAULT_MEMSIZE 0x04000000
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#else /* Au1550/Au1200-based develboards */
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#define ALCHEMY_BOARD_DEFAULT_MEMSIZE 0x08000000
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#endif
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void __init prom_init(void)
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{
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unsigned char *memsize_str;
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unsigned long memsize;
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prom_argc = (int)fw_arg0;
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prom_argv = (char **)fw_arg1;
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prom_envp = (char **)fw_arg2;
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prom_init_cmdline();
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memsize_str = prom_getenv("memsize");
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if (!memsize_str)
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memsize = ALCHEMY_BOARD_DEFAULT_MEMSIZE;
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else
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strict_strtoul(memsize_str, 0, &memsize);
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add_memory_region(0, memsize, BOOT_MEM_RAM);
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}
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void prom_putchar(unsigned char c)
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{
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alchemy_uart_putchar(UART0_PHYS_ADDR, c);
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}
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