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