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Diffstat (limited to 'arch/mips/alchemy/devboards/prom.c')
| -rw-r--r-- | arch/mips/alchemy/devboards/prom.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/prom.c b/arch/mips/alchemy/devboards/prom.c new file mode 100644 index 00000000000..0042bd6b1d7 --- /dev/null +++ b/arch/mips/alchemy/devboards/prom.c @@ -0,0 +1,62 @@ +/* + * Common code used by all Alchemy develboards. + * + * Extracted from files which had this to say: + * + * Copyright 2000, 2008 MontaVista Software Inc. + * Author: MontaVista Software, Inc. <source@mvista.com> + * + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <asm/bootinfo.h> +#include <asm/mach-au1x00/au1000.h> +#include <prom.h> + +#if defined(CONFIG_MIPS_PB1000) || defined(CONFIG_MIPS_DB1000) || \ + defined(CONFIG_MIPS_PB1100) || defined(CONFIG_MIPS_DB1100) || \ + defined(CONFIG_MIPS_PB1500) || defined(CONFIG_MIPS_DB1500) || \ + defined(CONFIG_MIPS_BOSPORUS) || defined(CONFIG_MIPS_MIRAGE) +#define ALCHEMY_BOARD_DEFAULT_MEMSIZE 0x04000000 + +#else /* Au1550/Au1200-based develboards */ +#define ALCHEMY_BOARD_DEFAULT_MEMSIZE 0x08000000 +#endif + +void __init prom_init(void) +{ + unsigned char *memsize_str; + unsigned long memsize; + + prom_argc = (int)fw_arg0; + prom_argv = (char **)fw_arg1; + prom_envp = (char **)fw_arg2; + + prom_init_cmdline(); + memsize_str = prom_getenv("memsize"); + if (!memsize_str) + memsize = ALCHEMY_BOARD_DEFAULT_MEMSIZE; + else + strict_strtoul(memsize_str, 0, &memsize); + add_memory_region(0, memsize, BOOT_MEM_RAM); +} |