1 files changed, 129 insertions, 0 deletions
diff --git a/arch/arm/mach-orion5x/tsx09-common.c b/arch/arm/mach-orion5x/tsx09-common.c
new file mode 100644
index 000000000..099e6fdfa
--- /dev/null
+++ b/arch/arm/mach-orion5x/tsx09-common.c
@@ -0,0 +1,129 @@
+// 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;
+	}
+}