"Ok, my loader's now up to putting up a prompt. It probes disks partially

but can't boot from them yet."

Thanks to Stephane Potvin for the some of the code in this set.

Submitted by:	Benno Rice <benno@jeamland.net>

1 files changed, 153 insertions, 0 deletions

diff --git a/sys/boot/ofw/libofw/main.c b/sys/boot/ofw/libofw/main.c
new file mode 100644
index 0000000..de4f6ed
--- /dev/null
+++ b/sys/boot/ofw/libofw/main.c
@@ -0,0 +1,153 @@
+/*-
+ * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
+ * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <stand.h>
+#include "openfirm.h"
+#include "libofw.h"
+#include "bootstrap.h"
+
+struct arch_switch	archsw;		/* MI/MD interface boundary */
+
+extern char end[];
+extern char bootprog_name[];
+extern char bootprog_rev[];
+extern char bootprog_date[];
+extern char bootprog_maker[];
+
+struct ofw_reg
+{
+	uint32_t	base;
+        uint32_t	size;
+};
+
+void
+init_heap(void)
+{
+	phandle_t	chosen, memory;
+	ihandle_t	meminstance;
+        struct ofw_reg	available;
+        void *		aligned_end;
+
+	chosen = OF_finddevice("/chosen");
+	OF_getprop(chosen, "memory", &meminstance, sizeof(meminstance));
+	memory = OF_instance_to_package(meminstance);
+	OF_getprop(memory, "available", &available, sizeof(available));
+        printf("available.base = 0x%08x\n", available.base);
+        printf("available.size = 0x%08x\n", available.size);
+
+        if (OF_claim((void *)available.base, 0x00040000, 0) ==
+	    (void *) 0xffffffff) {
+        	printf("Heap memory claim failed!\n");
+        	OF_enter();
+        }
+
+        aligned_end = (void *)(((int)end + sizeof(int) - 1) &
+	    ~(sizeof(int) - 1));
+        printf("end = 0x%08x, aligned_end = 0x%08x\n", (uint32_t)end,
+	    (uint32_t)aligned_end);
+        setheap((void *)aligned_end, (void *)(available.base + available.size));
+}
+
+uint32_t
+memsize(void)
+{
+	phandle_t	chosen, memory;
+	ihandle_t	meminstance;
+        struct ofw_reg	reg;
+
+	chosen = OF_finddevice("/chosen");
+	OF_getprop(chosen, "memory", &meminstance, sizeof(meminstance));
+	memory = OF_instance_to_package(meminstance);
+
+        OF_getprop(memory, "reg", &reg, sizeof(reg));
+
+        return(reg.size);
+}
+
+int
+main(int (*openfirm)(void *))
+{
+#if 0
+        void *	test;
+#endif
+	int	i;
+
+	/*
+	 * Initalise the OpenFirmware routines by giving them the entry point.
+	 */
+	OF_init(openfirm);
+
+	/*
+         * Set up console.
+         */
+	cons_probe();
+
+	printf(">>> hello?\n");
+
+	/*
+         * Initialise the heap as early as possible.  Once this is done,
+         * alloc() is usable. The stack is buried inside us, so this is
+         * safe.
+         */
+ 	init_heap();
+
+        /*
+         * Initialise the block cache
+         */
+        bcache_init(32, 512);		/* 16k XXX tune this */
+
+        /*
+         * March through the device switch probing for things.
+         */
+        for(i = 0; devsw[i] != NULL; i++)
+        	if(devsw[i]->dv_init != NULL)
+                	(devsw[i]->dv_init)();
+
+        printf("\n");
+        printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
+        printf("(%s, %s)\n", bootprog_maker, bootprog_date);
+        printf("Memory: %dKB\n", memsize() / 1024);
+
+	archsw.arch_getdev = ofw_getdev;
+
+        interact();			/* doesn't return */
+
+	OF_exit();
+
+	return 0;
+}
+
+COMMAND_SET(halt, "halt", "halt the system", command_halt);
+
+static int
+command_halt(int argc, char *argv[])
+{
+	OF_exit();
+	return(CMD_OK);
+}