From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../files-3.18/arch/mips/adm5120/prom/routerboot.c | 121 +++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/routerboot.c

(limited to 'target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/routerboot.c')

diff --git a/target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/routerboot.c b/target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/routerboot.c
new file mode 100644
index 0000000..d9a06d9
--- /dev/null
+++ b/target/linux/adm5120/files-3.18/arch/mips/adm5120/prom/routerboot.c
@@ -0,0 +1,121 @@
+/*
+ *  Mikrotik's RouterBOOT specific prom routines
+ *
+ *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/routerboot.h>
+
+#include <asm/bootinfo.h>
+#include <asm/addrspace.h>
+
+#include <asm/mach-adm5120/adm5120_defs.h>
+#include <prom/routerboot.h>
+#include "prom_read.h"
+
+struct rb_hard_settings rb_hs;
+static int rb_found;
+
+static int __init routerboot_load_hs(u8 *buf, u16 buflen)
+{
+	u16 id, len;
+
+	memset(&rb_hs, 0, sizeof(rb_hs));
+
+	if (buflen < 4)
+		return -1;
+
+	if (prom_read_le32(buf) != RB_MAGIC_HARD)
+		return -1;
+
+	/* skip magic value */
+	buf += 4;
+	buflen -= 4;
+
+	while (buflen > 2) {
+		id = prom_read_le16(buf);
+		buf += 2;
+		buflen -= 2;
+		if (id == RB_ID_TERMINATOR || buflen < 2)
+			break;
+
+		len = prom_read_le16(buf);
+		buf += 2;
+		buflen -= 2;
+
+		if (buflen < len)
+			break;
+
+		switch (id) {
+		case RB_ID_BIOS_VERSION:
+			rb_hs.bios_ver = (char *)buf;
+			break;
+		case RB_ID_BOARD_NAME:
+			rb_hs.name = (char *)buf;
+			break;
+		case RB_ID_MEMORY_SIZE:
+			rb_hs.mem_size = prom_read_le32(buf);
+			break;
+		case RB_ID_MAC_ADDRESS_COUNT:
+			rb_hs.mac_count = prom_read_le32(buf);
+			break;
+		case RB_ID_MAC_ADDRESS_PACK:
+			if ((len / RB_MAC_SIZE) > 0)
+				rb_hs.mac_base = buf;
+			break;
+		}
+
+		buf += len;
+		buflen -= len;
+
+	}
+
+	return 0;
+}
+
+#define RB_BS_OFFS	0x14
+#define RB_OFFS_MAX	(128*1024)
+
+int __init routerboot_present(void)
+{
+	struct rb_bios_settings	*bs;
+	u8 *base;
+	u32 off, len;
+
+	if (rb_found)
+		goto out;
+
+	base = (u8 *)KSEG1ADDR(ADM5120_SRAM0_BASE);
+	bs = (struct rb_bios_settings *)(base + RB_BS_OFFS);
+
+	off = prom_read_le32(&bs->hs_offs);
+	len = prom_read_le32(&bs->hs_size);
+	if (off > RB_OFFS_MAX)
+		goto out;
+
+	if (routerboot_load_hs(base+off, len) != 0)
+		goto out;
+
+	rb_found = 1;
+
+out:
+	return rb_found;
+}
+
+char *routerboot_get_boardname(void)
+{
+	if (rb_found == 0)
+		return NULL;
+
+	return rb_hs.name;
+}
-- 
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