From f720de03be1647e484820e14cdf3cacb3085dbec Mon Sep 17 00:00:00 2001
From: florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 8 Apr 2007 17:20:01 +0000
Subject: Major cleanup : - no more Broadcom kerSys* code - working runtime
 boot loader detection - updated flash map driver

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6896 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../brcm63xx-2.6/files/arch/mips/bcm963xx/info.c   | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/info.c

(limited to 'target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/info.c')

diff --git a/target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/info.c b/target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/info.c
new file mode 100644
index 000000000..d492aa3cd
--- /dev/null
+++ b/target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/info.c
@@ -0,0 +1,86 @@
+/*
+ * $Id$
+ *
+ * Copyright (C) 2007 OpenWrt.org
+ * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
+ * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
+ *
+ * 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.
+ */
+
+#include <linux/types.h>
+#include <linux/autoconf.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+#include <asm/string.h>
+#include <asm/mach-bcm963xx/bootloaders.h>
+
+static char *boot_loader_names[BOOT_LOADER_LAST+1] = {
+        [BOOT_LOADER_UNKNOWN]   = "Unknown",
+        [BOOT_LOADER_CFE]       = "CFE",
+        [BOOT_LOADER_REDBOOT]	= "RedBoot"
+};
+
+/* boot loaders specific definitions */
+#define CFE_EPTSEAL	0x43464531 /* CFE1 is the magic number to recognize CFE from other bootloaders */
+
+int boot_loader_type;
+/*
+ * Boot loader detection routines
+ */
+static int __init detect_cfe(void)
+{
+	/*
+	 * This method only works, when we are booted directly from the CFE.
+	 */
+	uint32_t cfe_handle = (uint32_t) fw_arg0;
+	uint32_t cfe_a1_val = (uint32_t) fw_arg1;
+	uint32_t cfe_entry = (uint32_t) fw_arg2;
+	uint32_t cfe_seal = (uint32_t) fw_arg3;
+
+	/* Check for CFE by finding the CFE magic number */
+	if (cfe_seal != CFE_EPTSEAL)
+		/* We are not booted from CFE */
+		return 0;
+
+	/* cfe_a1_val must be 0, because only one CPU present in the ADM5120 SoC */
+	if (cfe_a1_val != 0)
+		return 0;
+
+	/* The cfe_handle, and the cfe_entry must be kernel mode addresses */
+	if ((cfe_handle < KSEG0) || (cfe_entry < KSEG0))
+		return 0;
+
+	return 1;
+}
+
+static int __init detect_redboot(void)
+{
+	/* On Inventel Livebox, the boot loader is passed as a command line argument, check for it */
+	if (!strncmp(arcs_cmdline, "boot_loader=RedBoot", 19))
+		return 1;
+	return 0;
+}
+
+void __init detect_bootloader(void)
+{
+	if (detect_cfe()) {
+		boot_loader_type = BOOT_LOADER_CFE;
+		printk("Boot loader is : %s\n", boot_loader_names[boot_loader_type]);
+	}
+
+	if (detect_redboot()) {
+		boot_loader_type = BOOT_LOADER_REDBOOT;
+	}
+	else
+		boot_loader_type = BOOT_LOADER_UNKNOWN;
+}
+
+EXPORT_SYMBOL(boot_loader_type);
-- 
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