1 #include <linux/kernel.h>
3 #include <linux/platform_device.h>
4 #include <linux/mtd/physmap.h>
5 #include <linux/spi/flash.h>
6 #include <linux/spi/spi.h>
7 #include <linux/spi/orion_spi.h>
8 #include <linux/serial_reg.h>
9 #include <mach/kirkwood.h>
13 * QNAP TS-x1x Boards flash
16 /****************************************************************************
17 * 16 MiB NOR flash. The struct mtd_partition is not in the same order as the
18 * partitions on the device because we want to keep compatibility with
20 * Layout as used by QNAP:
21 * 0x00000000-0x00080000 : "U-Boot"
22 * 0x00200000-0x00400000 : "Kernel"
23 * 0x00400000-0x00d00000 : "RootFS"
24 * 0x00d00000-0x01000000 : "RootFS2"
25 * 0x00080000-0x000c0000 : "U-Boot Config"
26 * 0x000c0000-0x00200000 : "NAS Config"
28 * We'll use "RootFS1" instead of "RootFS" to stay compatible with the layout
29 * used by the QNAP TS-109/TS-209.
31 ***************************************************************************/
33 struct mtd_partition qnap_tsx1x_partitions[] = {
38 .mask_flags = MTD_WRITEABLE,
52 .name = "U-Boot Config",
62 const struct flash_platform_data qnap_tsx1x_flash = {
65 .parts = qnap_tsx1x_partitions,
66 .nr_parts = ARRAY_SIZE(qnap_tsx1x_partitions),
69 struct spi_board_info __initdata qnap_tsx1x_spi_slave_info[] = {
72 .platform_data = &qnap_tsx1x_flash,
74 .max_speed_hz = 20000000,
80 void __init qnap_tsx1x_register_flash(void)
82 spi_register_board_info(qnap_tsx1x_spi_slave_info,
83 ARRAY_SIZE(qnap_tsx1x_spi_slave_info));
88 /*****************************************************************************
89 * QNAP TS-x1x specific power off method via UART1-attached PIC
90 ****************************************************************************/
92 #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
94 void qnap_tsx1x_power_off(void)
96 /* 19200 baud divisor */
97 const unsigned divisor = ((kirkwood_tclk + (8 * 19200)) / (16 * 19200));
99 pr_info("%s: triggering power-off...\n", __func__);
101 /* hijack UART1 and reset into sane state (19200,8n1) */
102 writel(0x83, UART1_REG(LCR));
103 writel(divisor & 0xff, UART1_REG(DLL));
104 writel((divisor >> 8) & 0xff, UART1_REG(DLM));
105 writel(0x03, UART1_REG(LCR));
106 writel(0x00, UART1_REG(IER));
107 writel(0x00, UART1_REG(FCR));
108 writel(0x00, UART1_REG(MCR));
110 /* send the power-off command 'A' to PIC */
111 writel('A', UART1_REG(TX));