1 files changed, 52 insertions, 128 deletions

diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index a105301e2b7..68f099960eb 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -14,6 +14,7 @@
  */
 
 #include <stdarg.h>
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
@@ -25,99 +26,75 @@
 #include <linux/delay.h>
 #include <linux/initrd.h>
 #include <linux/bitops.h>
-#include <linux/module.h>
 #include <linux/kexec.h>
 #include <linux/debugfs.h>
 #include <linux/irq.h>
 #include <linux/memblock.h>
+#include <linux/of_fdt.h>
 
 #include <asm/prom.h>
 #include <asm/page.h>
 #include <asm/processor.h>
 #include <asm/irq.h>
 #include <linux/io.h>
-#include <asm/system.h>
 #include <asm/mmu.h>
 #include <asm/pgtable.h>
 #include <asm/sections.h>
 #include <asm/pci-bridge.h>
 
-void __init early_init_dt_add_memory_arch(u64 base, u64 size)
-{
-	memblock_add(base, size);
-}
-
-u64 __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
-{
-	return memblock_alloc(size, align);
-}
-
 #ifdef CONFIG_EARLY_PRINTK
-/* MS this is Microblaze specifig function */
-static int __init early_init_dt_scan_serial(unsigned long node,
-				const char *uname, int depth, void *data)
-{
-	unsigned long l;
-	char *p;
-	int *addr;
-
-	pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
-
-/* find all serial nodes */
-	if (strncmp(uname, "serial", 6) != 0)
-		return 0;
-
-	early_init_dt_check_for_initrd(node);
+static const char *stdout;
 
-/* find compatible node with uartlite */
-	p = of_get_flat_dt_prop(node, "compatible", &l);
-	if ((strncmp(p, "xlnx,xps-uartlite", 17) != 0) &&
-			(strncmp(p, "xlnx,opb-uartlite", 17) != 0) &&
-			(strncmp(p, "xlnx,axi-uartlite", 17) != 0))
-		return 0;
-
-	addr = of_get_flat_dt_prop(node, "reg", &l);
-	return be32_to_cpup(addr); /* return address */
-}
-
-/* this function is looking for early uartlite console - Microblaze specific */
-int __init early_uartlite_console(void)
-{
-	return of_scan_flat_dt(early_init_dt_scan_serial, NULL);
-}
-
-/* MS this is Microblaze specifig function */
-static int __init early_init_dt_scan_serial_full(unsigned long node,
+static int __init early_init_dt_scan_chosen_serial(unsigned long node,
 				const char *uname, int depth, void *data)
 {
-	unsigned long l;
-	char *p;
-	unsigned int addr;
-
-	pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
-
-/* find all serial nodes */
-	if (strncmp(uname, "serial", 6) != 0)
-		return 0;
-
-	early_init_dt_check_for_initrd(node);
-
-/* find compatible node with uartlite */
-	p = of_get_flat_dt_prop(node, "compatible", &l);
-
-	if ((strncmp(p, "xlnx,xps-uart16550", 18) != 0) &&
-		(strncmp(p, "xlnx,axi-uart16550", 18) != 0))
-		return 0;
-
-	addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l);
-	addr += *(u32 *)of_get_flat_dt_prop(node, "reg-offset", &l);
-	return be32_to_cpu(addr); /* return address */
+	int l;
+	const char *p;
+
+	pr_debug("%s: depth: %d, uname: %s\n", __func__, depth, uname);
+
+	if (depth == 1 && (strcmp(uname, "chosen") == 0 ||
+				strcmp(uname, "chosen@0") == 0)) {
+		p = of_get_flat_dt_prop(node, "linux,stdout-path", &l);
+		if (p != NULL && l > 0)
+			stdout = p; /* store pointer to stdout-path */
+	}
+
+	if (stdout && strstr(stdout, uname)) {
+		p = of_get_flat_dt_prop(node, "compatible", &l);
+		pr_debug("Compatible string: %s\n", p);
+
+		if ((strncmp(p, "xlnx,xps-uart16550", 18) == 0) ||
+			(strncmp(p, "xlnx,axi-uart16550", 18) == 0)) {
+			unsigned int addr;
+
+			*(u32 *)data = UART16550;
+
+			addr = *(u32 *)of_get_flat_dt_prop(node, "reg", &l);
+			addr += *(u32 *)of_get_flat_dt_prop(node,
+							"reg-offset", &l);
+			/* clear register offset */
+			return be32_to_cpu(addr) & ~3;
+		}
+		if ((strncmp(p, "xlnx,xps-uartlite", 17) == 0) ||
+				(strncmp(p, "xlnx,opb-uartlite", 17) == 0) ||
+				(strncmp(p, "xlnx,axi-uartlite", 17) == 0) ||
+				(strncmp(p, "xlnx,mdm", 8) == 0)) {
+			const unsigned int *addrp;
+
+			*(u32 *)data = UARTLITE;
+
+			addrp = of_get_flat_dt_prop(node, "reg", &l);
+			return be32_to_cpup(addrp); /* return address */
+		}
+	}
+	return 0;
 }
 
-/* this function is looking for early uartlite console - Microblaze specific */
-int __init early_uart16550_console(void)
+/* this function is looking for early console - Microblaze specific */
+int __init of_early_console(void *version)
 {
-	return of_scan_flat_dt(early_init_dt_scan_serial_full, NULL);
+	return of_scan_flat_dt(early_init_dt_scan_chosen_serial, version);
 }
 #endif
 
@@ -125,68 +102,15 @@ void __init early_init_devtree(void *params)
 {
 	pr_debug(" -> early_init_devtree(%p)\n", params);
 
-	/* Setup flat device-tree pointer */
-	initial_boot_params = params;
-
-	/* Retrieve various informations from the /chosen node of the
-	 * device-tree, including the platform type, initrd location and
-	 * size, TCE reserve, and more ...
-	 */
-	of_scan_flat_dt(early_init_dt_scan_chosen, NULL);
+	early_init_dt_scan(params);
+	if (!strlen(boot_command_line))
+		strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
 
-	/* Scan memory nodes and rebuild MEMBLOCKs */
-	memblock_init();
-	of_scan_flat_dt(early_init_dt_scan_root, NULL);
-	of_scan_flat_dt(early_init_dt_scan_memory, NULL);
-
-	/* Save command line for /proc/cmdline and then parse parameters */
-	strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
 	parse_early_param();
 
-	memblock_analyze();
+	memblock_allow_resize();
 
 	pr_debug("Phys. mem: %lx\n", (unsigned long) memblock_phys_mem_size());
 
 	pr_debug(" <- early_init_devtree()\n");
 }
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init early_init_dt_setup_initrd_arch(unsigned long start,
-		unsigned long end)
-{
-	initrd_start = (unsigned long)__va(start);
-	initrd_end = (unsigned long)__va(end);
-	initrd_below_start_ok = 1;
-}
-#endif
-
-/*******
- *
- * New implementation of the OF "find" APIs, return a refcounted
- * object, call of_node_put() when done.  The device tree and list
- * are protected by a rw_lock.
- *
- * Note that property management will need some locking as well,
- * this isn't dealt with yet.
- *
- *******/
-
-#if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
-static struct debugfs_blob_wrapper flat_dt_blob;
-
-static int __init export_flat_device_tree(void)
-{
-	struct dentry *d;
-
-	flat_dt_blob.data = initial_boot_params;
-	flat_dt_blob.size = initial_boot_params->totalsize;
-
-	d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
-				of_debugfs_root, &flat_dt_blob);
-	if (!d)
-		return 1;
-
-	return 0;
-}
-device_initcall(export_flat_device_tree);
-#endif