1 files changed, 121 insertions, 0 deletions
diff --git a/target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c b/target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c
new file mode 100644
index 000000000..85e0df622
--- /dev/null
+++ b/target/linux/adm5120-2.6/files/arch/mips/adm5120/adm5120_info.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2007 OpenWrt.org
+ * Copyright (C) Gabor Juhos
+ * 
+ * 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 <asm/bootinfo.h>
+#include <asm/addrspace.h>
+
+#include <adm5120_info.h>
+#include <myloader.h>
+
+/* boot loaders specific definitions */
+#define CFE_EPTSEAL	0x43464531 /* CFE1 is the magic number to recognize CFE from other bootloaders */
+
+
+struct adm5120_info adm5120_info = {
+	.cpu_speed		= CPU_SPEED_175,
+	.cpu_package		= CPU_PACKAGE_PQFP,
+	.boot_loader		= BOOT_LOADER_UNKNOWN,
+	.board_type		= BOARD_TYPE_UNKNOWN
+};
+
+static char *boot_loader_names[BOOT_LOADER_LAST+1] = {
+	[BOOT_LOADER_UNKNOWN]	= "Unknown",
+	[BOOT_LOADER_CFE]	= "CFE",
+	[BOOT_LOADER_UBOOT]	= "U-Boot",
+	[BOOT_LOADER_MYLOADER]	= "MyLoader"
+};
+
+/*
+ * 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_uboot(void)
+{
+	/* FIXME: not yet implemented */
+	return 0;
+}
+
+static int __init detect_myloader(void)
+{
+	struct mylo_system_params *sysp;
+	struct mylo_board_params *boardp;
+	struct mylo_partition_table *parts;
+
+	sysp = (struct mylo_system_params *)(MYLO_MIPS_SYS_PARAMS);
+	boardp = (struct mylo_board_params *)(MYLO_MIPS_BOARD_PARAMS);
+	parts = (struct mylo_partition_table *)(MYLO_MIPS_PARTITIONS);
+
+	/* Check for some magic numbers */
+	if ((sysp->magic != MYLO_MAGIC_SYS_PARAMS) || 
+	   (boardp->magic != MYLO_MAGIC_BOARD_PARAMS) ||
+	   (parts->magic != MYLO_MAGIC_PARTITIONS))
+		return 0;
+
+	return 1;
+}
+
+static int __init detect_bootloader(void)
+{
+	if (detect_cfe())
+		return BOOT_LOADER_CFE;
+	
+	if (detect_uboot()) 
+		return BOOT_LOADER_UBOOT;
+	
+	if (detect_myloader())
+		return BOOT_LOADER_MYLOADER;
+	
+	return BOOT_LOADER_UNKNOWN;
+}
+
+void __init adm5120_info_show(void)
+{
+	printk("adm5120: boot loader is %s\n", boot_loader_names[adm5120_info.boot_loader]);
+}
+
+void __init adm5120_info_init(void)
+{
+	adm5120_info.boot_loader = detect_bootloader();
+	
+	adm5120_info_show();
+}