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 "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_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 */ 75 void __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