1/*
2 * QNAP TS-x09 Boards common functions
3 *
4 * Maintainers: Lennert Buytenhek <buytenh@marvell.com>
5 *		Byron Bradley <byron.bbradley@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 */
12
13#include <linux/kernel.h>
14#include <linux/pci.h>
15#include <linux/mv643xx_eth.h>
16#include <linux/timex.h>
17#include <linux/serial_reg.h>
18#include <mach/orion5x.h>
19#include "tsx09-common.h"
20#include "common.h"
21
22/*****************************************************************************
23 * QNAP TS-x09 specific power off method via UART1-attached PIC
24 ****************************************************************************/
25
26#define UART1_REG(x)	(UART1_VIRT_BASE + ((UART_##x) << 2))
27
28void qnap_tsx09_power_off(void)
29{
30	/* 19200 baud divisor */
31	const unsigned divisor = ((orion5x_tclk + (8 * 19200)) / (16 * 19200));
32
33	pr_info("%s: triggering power-off...\n", __func__);
34
35	/* hijack uart1 and reset into sane state (19200,8n1) */
36	writel(0x83, UART1_REG(LCR));
37	writel(divisor & 0xff, UART1_REG(DLL));
38	writel((divisor >> 8) & 0xff, UART1_REG(DLM));
39	writel(0x03, UART1_REG(LCR));
40	writel(0x00, UART1_REG(IER));
41	writel(0x00, UART1_REG(FCR));
42	writel(0x00, UART1_REG(MCR));
43
44	/* send the power-off command 'A' to PIC */
45	writel('A', UART1_REG(TX));
46}
47
48/*****************************************************************************
49 * Ethernet
50 ****************************************************************************/
51
52struct mv643xx_eth_platform_data qnap_tsx09_eth_data = {
53	.phy_addr	= MV643XX_ETH_PHY_ADDR(8),
54};
55
56static int __init qnap_tsx09_check_mac_addr(const char *addr_str)
57{
58	u_int8_t addr[6];
59
60	if (!mac_pton(addr_str, addr))
61		return -1;
62
63	printk(KERN_INFO "tsx09: found ethernet mac address %pM\n", addr);
64
65	memcpy(qnap_tsx09_eth_data.mac_addr, addr, 6);
66
67	return 0;
68}
69
70/*
71 * The 'NAS Config' flash partition has an ext2 filesystem which
72 * contains a file that has the ethernet MAC address in plain text
73 * (format "xx:xx:xx:xx:xx:xx\n").
74 */
75void __init qnap_tsx09_find_mac_addr(u32 mem_base, u32 size)
76{
77	unsigned long addr;
78
79	for (addr = mem_base; addr < (mem_base + size); addr += 1024) {
80		void __iomem *nor_page;
81		int ret = 0;
82
83		nor_page = ioremap(addr, 1024);
84		if (nor_page != NULL) {
85			ret = qnap_tsx09_check_mac_addr((__force const char *)nor_page);
86			iounmap(nor_page);
87		}
88
89		if (ret == 0)
90			break;
91	}
92}
93