patch-2.4.4 linux/arch/mips/ite-boards/generic/pmon_prom.c

• Lines: 139
• Date: Fri Apr 13 20:26:07 2001
• Orig file: v2.4.3/linux/arch/mips/ite-boards/generic/pmon_prom.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.3/linux/arch/mips/ite-boards/generic/pmon_prom.c linux/arch/mips/ite-boards/generic/pmon_prom.c
@@ -0,0 +1,138 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *    PROM library initialisation code, assuming a version of
+ *    pmon is the boot code.
+ *
+ * Copyright 2000 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *         	ppopov@mvista.com or support@mvista.com
+ *
+ * This file was derived from Carsten Langgaard's 
+ * arch/mips/mips-boards/xx files.
+ *
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  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/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+
+#include <asm/bootinfo.h>
+
+/* #define DEBUG_CMDLINE */
+
+char arcs_cmdline[COMMAND_LINE_SIZE];
+int prom_argc;
+char **prom_argv, **prom_envp;
+
+typedef struct
+{
+    char *name;
+/*    char *val; */
+}t_env_var;
+
+
+char * __init prom_getcmdline(void)
+{
+	return &(arcs_cmdline[0]);
+}
+
+void  __init prom_init_cmdline(void)
+{
+	char *cp;
+	int actr;
+
+	actr = 1; /* Always ignore argv[0] */
+
+	cp = &(arcs_cmdline[0]);
+	while(actr < prom_argc) {
+	        strcpy(cp, prom_argv[actr]);
+		cp += strlen(prom_argv[actr]);
+		*cp++ = ' ';
+		actr++;
+	}
+	if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
+		--cp;
+	*cp = '\0';
+
+}
+
+
+char *prom_getenv(char *envname)
+{
+	/*
+	 * Return a pointer to the given environment variable.
+	 * Environment variables are stored in the form of "memsize=64".
+	 */
+
+	t_env_var *env = (t_env_var *)prom_envp;
+	int i;
+
+	i = strlen(envname);
+
+	while(env->name) {
+		if(strncmp(envname, env->name, i) == 0) {
+			return(env->name + strlen(envname) + 1);
+		}
+		env++;
+	}
+	return(NULL);
+}
+
+static inline unsigned char str2hexnum(unsigned char c)
+{
+	if(c >= '0' && c <= '9')
+	return c - '0';
+	if(c >= 'a' && c <= 'f')
+	return c - 'a' + 10;
+	return 0; /* foo */
+}
+
+int __init page_is_ram(unsigned long pagenr)
+{
+    return 1;
+}
+
+void prom_free_prom_memory (void)
+{
+}
+
+unsigned long __init prom_get_memsize(void)
+{
+	char *memsize_str;
+	unsigned int memsize;
+
+	memsize_str = prom_getenv("memsize");
+	if (!memsize_str) {
+		printk("memsize unknown: setting to 32MB\n");
+		memsize = 32; 
+	} else {
+#ifdef DEBUG
+		printk("prom_memsize: %s\n", memsize_str);
+#endif
+		memsize = simple_strtol(memsize_str, NULL, 0);
+	}
+	return memsize;
+}