1 files changed, 464 insertions, 0 deletions
diff --git a/bsps/sparc64/shared/helenos/boot/genarch/ofw.c b/bsps/sparc64/shared/helenos/boot/genarch/ofw.c
new file mode 100644
index 0000000000..2bbc490636
--- /dev/null
+++ b/bsps/sparc64/shared/helenos/boot/genarch/ofw.c
@@ -0,0 +1,464 @@
+/*
+ * Copyright (c) 2005 Martin Decky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - 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.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
+ */
+
+/*
+ * Modifications are made to compile for RTEMS. Removes asm.h and printf.h.
+ * Adds asm.h (rtems bsp). Adds ofw_read() and ofw_stdin variable. Uses 
+ * printk instead of puts for error messages.
+ *
+ */
+
+#include <bsp.h>
+#include <rtems/bspIo.h>
+
+#include <boot/ofw.h>
+#include <boot/ofwarch.h>
+#if 0
+#include <boot/printf.h>
+#include <boot/asm.h>
+#endif
+#include <boot/types.h>
+#include <string.h>
+#include <asm.h>
+
+#define RED(i)    (((i) >> 5) & ((1 << 3) - 1))
+#define GREEN(i)  (((i) >> 3) & ((1 << 2) - 1))
+#define BLUE(i)   ((i) & ((1 << 3) - 1))
+#define CLIP(i)   ((i) <= 255 ? (i) : 255)
+
+uintptr_t ofw_cif;
+
+phandle ofw_chosen;
+ihandle ofw_stdout;
+ihandle ofw_stdin;
+
+phandle ofw_root;
+ihandle ofw_mmu;
+ihandle ofw_memory_prop;
+phandle ofw_memory;
+
+void ofw_init(void)
+{
+	ofw_chosen = ofw_find_device("/chosen");
+	if (ofw_chosen == -1)
+		halt();
+	
+	if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout,
+	    sizeof(ofw_stdout)) <= 0)
+		ofw_stdout = 0;
+	
+  if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin,
+		sizeof(ofw_stdin)) <= 0)
+		ofw_stdin = 0;
+
+	ofw_root = ofw_find_device("/");
+	if (ofw_root == -1) {
+		printk("\r\nError: Unable to find / device, halted.\r\n");
+		halt();
+	}
+	
+	if (ofw_get_property(ofw_chosen, "mmu", &ofw_mmu,
+	    sizeof(ofw_mmu)) <= 0) {
+		printk("\r\nError: Unable to get mmu property, halted.\r\n");
+		halt();
+	}
+	if (ofw_get_property(ofw_chosen, "memory", &ofw_memory_prop,
+	    sizeof(ofw_memory_prop)) <= 0) {
+		printk("\r\nError: Unable to get memory property, halted.\r\n");
+		halt();
+	}
+	
+	ofw_memory = ofw_find_device("/memory");
+	if (ofw_memory == -1) {
+		printk("\r\nError: Unable to find /memory device, halted.\r\n");
+		halt();
+	}
+}
+
+/** Perform a call to OpenFirmware client interface.
+ *
+ * @param service String identifying the service requested.
+ * @param nargs   Number of input arguments.
+ * @param nret    Number of output arguments. This includes the return
+ *                value.
+ * @param rets    Buffer for output arguments or NULL. The buffer must
+ *                accommodate nret - 1 items.
+ *
+ * @return Return value returned by the client interface.
+ *
+ */
+unsigned long
+ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets,
+    ...)
+{
+	va_list list;
+	ofw_args_t args;
+	int i;
+	
+	args.service = (ofw_arg_t) service;
+	args.nargs = nargs;
+	args.nret = nret;
+	
+	va_start(list, rets);
+	for (i = 0; i < nargs; i++)
+		args.args[i] = va_arg(list, ofw_arg_t);
+	va_end(list);
+	
+	for (i = 0; i < nret; i++)
+		args.args[i + nargs] = 0;
+	
+	(void) ofw(&args);
+
+	for (i = 1; i < nret; i++)
+		rets[i - 1] = args.args[i + nargs];
+
+	return args.args[nargs];
+}
+
+phandle ofw_find_device(const char *name)
+{
+	return ofw_call("finddevice", 1, 1, NULL, name);
+}
+
+int ofw_get_property(const phandle device, const char *name, void *buf,
+    const int buflen)
+{
+	return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
+}
+
+int ofw_get_proplen(const phandle device, const char *name)
+{
+	return ofw_call("getproplen", 2, 1, NULL, device, name);
+}
+
+int ofw_next_property(const phandle device, char *previous, char *buf)
+{
+	return ofw_call("nextprop", 3, 1, NULL, device, previous, buf);
+}
+
+int ofw_package_to_path(const phandle device, char *buf, const int buflen)
+{
+	return ofw_call("package-to-path", 3, 1, NULL, device, buf, buflen);
+}
+
+unsigned int ofw_get_address_cells(const phandle device)
+{
+	unsigned int ret = 1;
+	
+	if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
+		if (ofw_get_property(ofw_root, "#address-cells", &ret,
+		    sizeof(ret)) <= 0)
+			ret = OFW_ADDRESS_CELLS;
+	
+	return ret;
+}
+
+unsigned int ofw_get_size_cells(const phandle device)
+{
+	unsigned int ret;
+	
+	if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
+		if (ofw_get_property(ofw_root, "#size-cells", &ret,
+		    sizeof(ret)) <= 0)
+			ret = OFW_SIZE_CELLS;
+	
+	return ret;
+}
+
+phandle ofw_get_child_node(const phandle node)
+{
+	return ofw_call("child", 1, 1, NULL, node);
+}
+
+phandle ofw_get_peer_node(const phandle node)
+{
+	return ofw_call("peer", 1, 1, NULL, node);
+}
+
+static ihandle ofw_open(const char *name)
+{
+	return ofw_call("open", 1, 1, NULL, name);
+}
+
+
+void ofw_write(const char *str, const int len)
+{
+	if (ofw_stdout == 0)
+		return;
+	
+	ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
+}
+
+void ofw_read(void *str, const int len)
+{
+  if (ofw_stdin == 0)
+    return;
+
+  ofw_call("read", 3, 1, NULL, ofw_stdin, str, len);
+}
+
+void *ofw_translate(const void *virt)
+{
+	ofw_arg_t result[4];
+	int shift;
+
+	if (ofw_call("call-method", 4, 5, result, "translate", ofw_mmu,
+	    virt, 0) != 0) {
+		printk("Error: MMU method translate() failed, halting.\n");
+		halt();
+	}
+
+	if (ofw_translate_failed(result[0]))
+		return NULL;
+
+	if (sizeof(unative_t) == 8)
+		shift = 32;
+	else
+		shift = 0;
+
+	return (void *) ((result[2] << shift) | result[3]);
+}
+
+void *ofw_claim_virt(const void *virt, const unsigned int len)
+{
+	ofw_arg_t retaddr;
+
+	if (ofw_call("call-method", 5, 2, &retaddr, "claim", ofw_mmu, 0, len,
+	    virt) != 0) {
+		printk("Error: MMU method claim() failed, halting.\n");
+		halt();
+	}
+
+	return (void *) retaddr;
+}
+
+static void *ofw_claim_phys_internal(const void *phys, const unsigned int len, const unsigned int alignment)
+{
+	/*
+	 * Note that the return value check will help
+	 * us to discover conflicts between OpenFirmware
+	 * allocations and our use of physical memory.
+	 * It is better to detect collisions here
+	 * than to cope with weird errors later.
+	 *
+	 * So this is really not to make the loader
+	 * more generic; it is here for debugging
+	 * purposes.
+	 */
+	
+	if (sizeof(unative_t) == 8) {
+		ofw_arg_t retaddr[2];
+		int shift = 32;
+		
+		if (ofw_call("call-method", 6, 3, retaddr, "claim",
+		    ofw_memory_prop, alignment, len, ((uintptr_t) phys) >> shift,
+		    ((uintptr_t) phys) & ((uint32_t) -1)) != 0) {
+			printk("Error: memory method claim() failed, halting.\n");
+			halt();
+		}
+		
+		return (void *) ((retaddr[0] << shift) | retaddr[1]);
+	} else {
+		ofw_arg_t retaddr[1];
+		
+		if (ofw_call("call-method", 5, 2, retaddr, "claim",
+		    ofw_memory_prop, alignment, len, (uintptr_t) phys) != 0) {
+			printk("Error: memory method claim() failed, halting.\n");
+			halt();
+		}
+		
+		return (void *) retaddr[0];
+	}
+}
+
+void *ofw_claim_phys(const void *phys, const unsigned int len)
+{
+	return ofw_claim_phys_internal(phys, len, 0);
+}
+
+void *ofw_claim_phys_any(const unsigned int len, const unsigned int alignment)
+{
+	return ofw_claim_phys_internal(NULL, len, alignment);
+}
+
+int ofw_map(const void *phys, const void *virt, const unsigned int size, const int mode)
+{
+	uintptr_t phys_hi, phys_lo;
+
+	if (sizeof(unative_t) == 8) {
+		int shift = 32;
+		phys_hi = (uintptr_t) phys >> shift;
+		phys_lo = (uintptr_t) phys & 0xffffffff;
+	} else {
+		phys_hi = 0;
+		phys_lo = (uintptr_t) phys;
+	}
+
+	return ofw_call("call-method", 7, 1, NULL, "map", ofw_mmu, mode, size,
+	    virt, phys_hi, phys_lo);
+}
+
+/** Save OpenFirmware physical memory map.
+ *
+ * @param map Memory map structure where the map will be saved.
+ *
+ * @return Zero on failure, non-zero on success.
+ */
+int ofw_memmap(memmap_t *map)
+{
+	unsigned int ac = ofw_get_address_cells(ofw_memory) /
+	    (sizeof(uintptr_t) / sizeof(uint32_t));
+	unsigned int sc = ofw_get_size_cells(ofw_memory) /
+	    (sizeof(uintptr_t) / sizeof(uint32_t));
+
+	uintptr_t buf[((ac + sc) * MEMMAP_MAX_RECORDS)];
+	int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
+	if (ret <= 0)		/* ret is the number of written bytes */
+		return false;
+
+	int pos;
+	map->total = 0;
+	map->count = 0;
+	for (pos = 0; (pos < ret / sizeof(uintptr_t)) &&
+	    (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
+		void *start = (void *) (buf[pos + ac - 1]);
+		unsigned int size = buf[pos + ac + sc - 1];
+
+		/*
+		 * This is a hot fix of the issue which occurs on machines
+		 * where there are holes in the physical memory (such as
+		 * SunBlade 1500). Should we detect a hole in the physical
+		 * memory, we will ignore any memory detected behind
+		 * the hole and pretend the hole does not exist.
+		 */
+		if ((map->count > 0) && (map->zones[map->count - 1].start +
+		    map->zones[map->count - 1].size < start))
+			break;
+
+		if (size > 0) {
+			map->zones[map->count].start = start;
+			map->zones[map->count].size = size;
+			map->count++;
+			map->total += size;
+		}
+	}
+	
+	return true;
+}
+
+static void ofw_setup_screen(phandle handle)
+{
+	/* Check for device type */
+	char device_type[OFW_TREE_PROPERTY_MAX_VALUELEN];
+	if (ofw_get_property(handle, "device_type", device_type, OFW_TREE_PROPERTY_MAX_VALUELEN) <= 0)
+		return;
+	
+	device_type[OFW_TREE_PROPERTY_MAX_VALUELEN - 1] = '\0';
+	if (strcmp(device_type, "display") != 0)
+		return;
+	
+	/* Check for 8 bit depth */
+	uint32_t depth;
+	if (ofw_get_property(handle, "depth", &depth, sizeof(uint32_t)) <= 0)
+		depth = 0;
+	
+	/* Get device path */
+	static char path[OFW_TREE_PATH_MAX_LEN + 1];
+	size_t len = ofw_package_to_path(handle, path, OFW_TREE_PATH_MAX_LEN);
+	if (len == -1)
+		return;
+	
+	path[len] = '\0';
+	
+	/* Open the display to initialize it */
+	ihandle screen = ofw_open(path);
+	if (screen == -1)
+		return;
+	
+	if (depth == 8) {
+		/* Setup the palette so that the (inverted) 3:2:3 scheme is usable */
+		unsigned int i;
+		for (i = 0; i < 256; i++) {
+			ofw_call("call-method", 6, 1, NULL, "color!", screen,
+			    255 - i, CLIP(BLUE(i) * 37), GREEN(i) * 85, CLIP(RED(i) * 37));
+		}
+	}
+}
+
+static void ofw_setup_screens_internal(phandle current)
+{
+	while ((current != 0) && (current != -1)) {
+		ofw_setup_screen(current);
+		
+		/*
+		 * Recursively process the potential child node.
+		 */
+		phandle child = ofw_get_child_node(current);
+		if ((child != 0) && (child != -1))
+			ofw_setup_screens_internal(child);
+		
+		/*
+		 * Iteratively process the next peer node.
+		 * Note that recursion is a bad idea here.
+		 * Due to the topology of the OpenFirmware device tree,
+		 * the nesting of peer nodes could be to wide and the
+		 * risk of overflowing the stack is too real.
+		 */
+		phandle peer = ofw_get_peer_node(current);
+		if ((peer != 0) && (peer != -1)) {
+			current = peer;
+			/*
+			 * Process the peer in next iteration.
+			 */
+			continue;
+		}
+		
+		/*
+		 * No more peers on this level.
+		 */
+		break;
+	}
+}
+
+/** Setup all screens which can be detected.
+ *
+ * Open all screens which can be detected and set up the palette for the 8-bit
+ * color depth configuration so that the 3:2:3 color scheme can be used.
+ * Check that setting the palette makes sense (the color depth is not greater
+ * than 8).
+ *
+ */
+void ofw_setup_screens(void)
+{
+	ofw_setup_screens_internal(ofw_root);
+}
+
+void ofw_quiesce(void)
+{
+	ofw_call("quiesce", 0, 0, NULL);
+}