130 lines
2.9 KiB
C
130 lines
2.9 KiB
C
// 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 <buytenh@marvell.com>
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* Byron Bradley <byron.bbradley@gmail.com>
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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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