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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 "tsx09-common.h" |
19 | #include "common.h" |
20 | |
21 | /***************************************************************************** |
22 | * QNAP TS-x09 specific power off method via UART1-attached PIC |
23 | ****************************************************************************/ |
24 | |
25 | #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2)) |
26 | |
27 | void qnap_tsx09_power_off(void) |
28 | { |
29 | /* 19200 baud divisor */ |
30 | const unsigned divisor = ((orion5x_tclk + (8 * 19200)) / (16 * 19200)); |
31 | |
32 | pr_info("%s: triggering power-off...\n", __func__); |
33 | |
34 | /* hijack uart1 and reset into sane state (19200,8n1) */ |
35 | writel(0x83, UART1_REG(LCR)); |
36 | writel(divisor & 0xff, UART1_REG(DLL)); |
37 | writel((divisor >> 8) & 0xff, UART1_REG(DLM)); |
38 | writel(0x03, UART1_REG(LCR)); |
39 | writel(0x00, UART1_REG(IER)); |
40 | writel(0x00, UART1_REG(FCR)); |
41 | writel(0x00, UART1_REG(MCR)); |
42 | |
43 | /* send the power-off command 'A' to PIC */ |
44 | writel('A', UART1_REG(TX)); |
45 | } |
46 | |
47 | /***************************************************************************** |
48 | * Ethernet |
49 | ****************************************************************************/ |
50 | |
51 | struct mv643xx_eth_platform_data qnap_tsx09_eth_data = { |
52 | .phy_addr = MV643XX_ETH_PHY_ADDR(8), |
53 | }; |
54 | |
55 | static int __init qnap_tsx09_parse_hex_nibble(char n) |
56 | { |
57 | if (n >= '0' && n <= '9') |
58 | return n - '0'; |
59 | |
60 | if (n >= 'A' && n <= 'F') |
61 | return n - 'A' + 10; |
62 | |
63 | if (n >= 'a' && n <= 'f') |
64 | return n - 'a' + 10; |
65 | |
66 | return -1; |
67 | } |
68 | |
69 | static int __init qnap_tsx09_parse_hex_byte(const char *b) |
70 | { |
71 | int hi; |
72 | int lo; |
73 | |
74 | hi = qnap_tsx09_parse_hex_nibble(b[0]); |
75 | lo = qnap_tsx09_parse_hex_nibble(b[1]); |
76 | |
77 | if (hi < 0 || lo < 0) |
78 | return -1; |
79 | |
80 | return (hi << 4) | lo; |
81 | } |
82 | |
83 | static int __init qnap_tsx09_check_mac_addr(const char *addr_str) |
84 | { |
85 | u_int8_t addr[6]; |
86 | int i; |
87 | |
88 | for (i = 0; i < 6; i++) { |
89 | int byte; |
90 | |
91 | /* |
92 | * Enforce "xx:xx:xx:xx:xx:xx\n" format. |
93 | */ |
94 | if (addr_str[(i * 3) + 2] != ((i < 5) ? ':' : '\n')) |
95 | return -1; |
96 | |
97 | byte = qnap_tsx09_parse_hex_byte(addr_str + (i * 3)); |
98 | if (byte < 0) |
99 | return -1; |
100 | addr[i] = byte; |
101 | } |
102 | |
103 | printk(KERN_INFO "tsx09: found ethernet mac address "); |
104 | for (i = 0; i < 6; i++) |
105 | printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n"); |
106 | |
107 | memcpy(qnap_tsx09_eth_data.mac_addr, addr, 6); |
108 | |
109 | return 0; |
110 | } |
111 | |
112 | /* |
113 | * The 'NAS Config' flash partition has an ext2 filesystem which |
114 | * contains a file that has the ethernet MAC address in plain text |
115 | * (format "xx:xx:xx:xx:xx:xx\n"). |
116 | */ |
117 | void __init qnap_tsx09_find_mac_addr(u32 mem_base, u32 size) |
118 | { |
119 | unsigned long addr; |
120 | |
121 | for (addr = mem_base; addr < (mem_base + size); addr += 1024) { |
122 | char *nor_page; |
123 | int ret = 0; |
124 | |
125 | nor_page = ioremap(addr, 1024); |
126 | if (nor_page != NULL) { |
127 | ret = qnap_tsx09_check_mac_addr(nor_page); |
128 | iounmap(nor_page); |
129 | } |
130 | |
131 | if (ret == 0) |
132 | break; |
133 | } |
134 | } |
135 |
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