1 files changed, 113 insertions, 0 deletions
diff --git a/target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c b/target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c
new file mode 100644
index 0000000000..ba8051ea8c
--- /dev/null
+++ b/target/linux/adm5120-2.6/files/arch/mips/adm5120/prom.c
@@ -0,0 +1,113 @@
+/*****************************************************************************
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ * Copyright (C) 2003 ADMtek Incorporated.
+ *	daniell@admtek.com.tw
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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 <linux/init.h>
+#include <linux/autoconf.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+
+void setup_prom_printf(int);
+void prom_printf(char *, ...);
+void prom_meminit(void);
+
+#define ADM5120_ENVC           1
+
+char *adm5120_envp[2*ADM5120_ENVC] = {"memsize","0x001000000"};
+
+#define READCSR(r)      *(volatile unsigned long *)(0xB2600000+(r))
+#define WRITECSR(r,v)   *(volatile unsigned long *)(0xB2600000+(r)) = v
+
+#define UART_DR_REG         0x00
+#define UART_FR_REG         0x18
+#define UART_TX_FIFO_FULL   0x20
+
+int putPromChar(char c)
+{
+	WRITECSR(UART_DR_REG, c);
+        while ( (READCSR(UART_FR_REG) & UART_TX_FIFO_FULL) );
+        return 0;
+}
+
+/*
+ * Ugly prom_printf used for debugging
+ */
+
+void prom_printf(char *fmt, ...)
+{
+        va_list args;
+        int l;
+        char *p, *buf_end;
+        char buf[1024];
+
+        va_start(args, fmt);
+        l = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf) */
+        va_end(args);
+
+        buf_end = buf + l;
+
+        for (p = buf; p < buf_end; p++) {
+                /* Crude cr/nl handling is better than none */
+                if (*p == '\n')
+                        putPromChar('\r');
+                putPromChar(*p);
+        }
+}
+
+char *prom_getenv(char *envname)
+{
+	int i, index=0;
+
+	i = strlen(envname);
+
+	printk(KERN_INFO "GETENV: envname is %s\n", envname);
+
+	while(index < (2*ADM5120_ENVC)) {
+		if(strncmp(envname, adm5120_envp[index], i) == 0) {
+			printk(KERN_INFO "GETENV: returning %s\n", adm5120_envp[index+1]);
+			return(adm5120_envp[index+1]);
+		}
+		index += 2;
+	}
+
+	printk(KERN_INFO "GETENV: not found.\n");
+	return(NULL);
+}
+	
+/*
+ * initialize the prom module.
+ */
+void __init prom_init(void)
+{
+	/* you should these macros defined in include/asm/bootinfo.h */
+	mips_machgroup = MACH_GROUP_ADM_GW;
+	mips_machtype = MACH_ADM_GW_5120;
+
+	/* init command line, register a default kernel command line */
+	strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=jffs2 init=/etc/preinit");
+
+	/* init memory map */
+	prom_meminit();
+}