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 28 void 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 52 struct mv643xx_eth_platform_data qnap_tsx09_eth_data = { 53 .phy_addr = MV643XX_ETH_PHY_ADDR(8), 54 }; 55 56 static int __init qnap_tsx09_parse_hex_nibble(char n) 57 { 58 if (n >= '0' && n <= '9') 59 return n - '0'; 60 61 if (n >= 'A' && n <= 'F') 62 return n - 'A' + 10; 63 64 if (n >= 'a' && n <= 'f') 65 return n - 'a' + 10; 66 67 return -1; 68 } 69 70 static int __init qnap_tsx09_parse_hex_byte(const char *b) 71 { 72 int hi; 73 int lo; 74 75 hi = qnap_tsx09_parse_hex_nibble(b[0]); 76 lo = qnap_tsx09_parse_hex_nibble(b[1]); 77 78 if (hi < 0 || lo < 0) 79 return -1; 80 81 return (hi << 4) | lo; 82 } 83 84 static int __init qnap_tsx09_check_mac_addr(const char *addr_str) 85 { 86 u_int8_t addr[6]; 87 int i; 88 89 for (i = 0; i < 6; i++) { 90 int byte; 91 92 /* 93 * Enforce "xx:xx:xx:xx:xx:xx\n" format. 94 */ 95 if (addr_str[(i * 3) + 2] != ((i < 5) ? ':' : '\n')) 96 return -1; 97 98 byte = qnap_tsx09_parse_hex_byte(addr_str + (i * 3)); 99 if (byte < 0) 100 return -1; 101 addr[i] = byte; 102 } 103 104 printk(KERN_INFO "tsx09: found ethernet mac address "); 105 for (i = 0; i < 6; i++) 106 printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n"); 107 108 memcpy(qnap_tsx09_eth_data.mac_addr, addr, 6); 109 110 return 0; 111 } 112 113 /* 114 * The 'NAS Config' flash partition has an ext2 filesystem which 115 * contains a file that has the ethernet MAC address in plain text 116 * (format "xx:xx:xx:xx:xx:xx\n"). 117 */ 118 void __init qnap_tsx09_find_mac_addr(u32 mem_base, u32 size) 119 { 120 unsigned long addr; 121 122 for (addr = mem_base; addr < (mem_base + size); addr += 1024) { 123 char *nor_page; 124 int ret = 0; 125 126 nor_page = ioremap(addr, 1024); 127 if (nor_page != NULL) { 128 ret = qnap_tsx09_check_mac_addr(nor_page); 129 iounmap(nor_page); 130 } 131 132 if (ret == 0) 133 break; 134 } 135 } 136