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129 lines
2.9 KiB
129 lines
2.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* QNAP TS-x09 Boards common functions |
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* |
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* Maintainers: Lennert Buytenhek <[email protected]> |
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* Byron Bradley <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/pci.h> |
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#include <linux/mv643xx_eth.h> |
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#include <linux/timex.h> |
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#include <linux/serial_reg.h> |
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#include "orion5x.h" |
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#include "tsx09-common.h" |
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#include "common.h" |
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/***************************************************************************** |
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* QNAP TS-x09 specific power off method via UART1-attached PIC |
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****************************************************************************/ |
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#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2)) |
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void qnap_tsx09_power_off(void) |
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{ |
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/* 19200 baud divisor */ |
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const unsigned divisor = ((orion5x_tclk + (8 * 19200)) / (16 * 19200)); |
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pr_info("%s: triggering power-off...\n", __func__); |
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/* hijack uart1 and reset into sane state (19200,8n1) */ |
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writel(0x83, UART1_REG(LCR)); |
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writel(divisor & 0xff, UART1_REG(DLL)); |
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writel((divisor >> 8) & 0xff, UART1_REG(DLM)); |
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writel(0x03, UART1_REG(LCR)); |
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writel(0x00, UART1_REG(IER)); |
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writel(0x00, UART1_REG(FCR)); |
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writel(0x00, UART1_REG(MCR)); |
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/* send the power-off command 'A' to PIC */ |
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writel('A', UART1_REG(TX)); |
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} |
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/***************************************************************************** |
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* Ethernet |
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****************************************************************************/ |
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struct mv643xx_eth_platform_data qnap_tsx09_eth_data = { |
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.phy_addr = MV643XX_ETH_PHY_ADDR(8), |
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}; |
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static int __init qnap_tsx09_parse_hex_nibble(char n) |
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{ |
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if (n >= '0' && n <= '9') |
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return n - '0'; |
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if (n >= 'A' && n <= 'F') |
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return n - 'A' + 10; |
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if (n >= 'a' && n <= 'f') |
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return n - 'a' + 10; |
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return -1; |
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} |
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static int __init qnap_tsx09_parse_hex_byte(const char *b) |
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{ |
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int hi; |
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int lo; |
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hi = qnap_tsx09_parse_hex_nibble(b[0]); |
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lo = qnap_tsx09_parse_hex_nibble(b[1]); |
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if (hi < 0 || lo < 0) |
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return -1; |
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return (hi << 4) | lo; |
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} |
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static int __init qnap_tsx09_check_mac_addr(const char *addr_str) |
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{ |
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u_int8_t addr[6]; |
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int i; |
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for (i = 0; i < 6; i++) { |
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int byte; |
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/* |
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* Enforce "xx:xx:xx:xx:xx:xx\n" format. |
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*/ |
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if (addr_str[(i * 3) + 2] != ((i < 5) ? ':' : '\n')) |
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return -1; |
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byte = qnap_tsx09_parse_hex_byte(addr_str + (i * 3)); |
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if (byte < 0) |
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return -1; |
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addr[i] = byte; |
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} |
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printk(KERN_INFO "tsx09: found ethernet mac address %pM\n", addr); |
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memcpy(qnap_tsx09_eth_data.mac_addr, addr, 6); |
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return 0; |
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} |
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/* |
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* The 'NAS Config' flash partition has an ext2 filesystem which |
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* contains a file that has the ethernet MAC address in plain text |
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* (format "xx:xx:xx:xx:xx:xx\n"). |
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*/ |
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void __init qnap_tsx09_find_mac_addr(u32 mem_base, u32 size) |
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{ |
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unsigned long addr; |
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for (addr = mem_base; addr < (mem_base + size); addr += 1024) { |
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char *nor_page; |
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int ret = 0; |
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nor_page = ioremap(addr, 1024); |
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if (nor_page != NULL) { |
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ret = qnap_tsx09_check_mac_addr(nor_page); |
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iounmap(nor_page); |
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} |
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if (ret == 0) |
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break; |
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} |
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}
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