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8d27b2f7 MM |
1 | #include <linux/kernel.h> |
2 | #include <linux/pci.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> | |
10 | #include "common.h" | |
11 | ||
12 | /* | |
13 | * QNAP TS-x1x Boards flash | |
14 | */ | |
15 | ||
16 | /**************************************************************************** | |
17 | * 16 MiB NOR flash. The struct mtd_partition is not in the same order as the | |
25985edc | 18 | * partitions on the device because we want to keep compatibility with |
8d27b2f7 MM |
19 | * the QNAP firmware. |
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" | |
27 | * | |
28 | * We'll use "RootFS1" instead of "RootFS" to stay compatible with the layout | |
29 | * used by the QNAP TS-109/TS-209. | |
30 | * | |
31 | ***************************************************************************/ | |
32 | ||
33 | struct mtd_partition qnap_tsx1x_partitions[] = { | |
34 | { | |
35 | .name = "U-Boot", | |
36 | .size = 0x00080000, | |
37 | .offset = 0, | |
38 | .mask_flags = MTD_WRITEABLE, | |
39 | }, { | |
40 | .name = "Kernel", | |
41 | .size = 0x00200000, | |
42 | .offset = 0x00200000, | |
43 | }, { | |
44 | .name = "RootFS1", | |
45 | .size = 0x00900000, | |
46 | .offset = 0x00400000, | |
47 | }, { | |
48 | .name = "RootFS2", | |
49 | .size = 0x00300000, | |
50 | .offset = 0x00d00000, | |
51 | }, { | |
52 | .name = "U-Boot Config", | |
53 | .size = 0x00040000, | |
54 | .offset = 0x00080000, | |
55 | }, { | |
56 | .name = "NAS Config", | |
57 | .size = 0x00140000, | |
58 | .offset = 0x000c0000, | |
59 | }, | |
60 | }; | |
61 | ||
62 | const struct flash_platform_data qnap_tsx1x_flash = { | |
63 | .type = "m25p128", | |
64 | .name = "spi_flash", | |
65 | .parts = qnap_tsx1x_partitions, | |
66 | .nr_parts = ARRAY_SIZE(qnap_tsx1x_partitions), | |
67 | }; | |
68 | ||
69 | struct spi_board_info __initdata qnap_tsx1x_spi_slave_info[] = { | |
70 | { | |
71 | .modalias = "m25p80", | |
72 | .platform_data = &qnap_tsx1x_flash, | |
73 | .irq = -1, | |
74 | .max_speed_hz = 20000000, | |
75 | .bus_num = 0, | |
76 | .chip_select = 0, | |
77 | }, | |
78 | }; | |
79 | ||
f9578fc0 | 80 | void __init qnap_tsx1x_register_flash(void) |
8d27b2f7 MM |
81 | { |
82 | spi_register_board_info(qnap_tsx1x_spi_slave_info, | |
83 | ARRAY_SIZE(qnap_tsx1x_spi_slave_info)); | |
84 | kirkwood_spi_init(); | |
85 | } | |
86 | ||
87 | ||
88 | /***************************************************************************** | |
89 | * QNAP TS-x1x specific power off method via UART1-attached PIC | |
90 | ****************************************************************************/ | |
91 | ||
92 | #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2)) | |
93 | ||
94 | void qnap_tsx1x_power_off(void) | |
95 | { | |
96 | /* 19200 baud divisor */ | |
97 | const unsigned divisor = ((kirkwood_tclk + (8 * 19200)) / (16 * 19200)); | |
98 | ||
99 | pr_info("%s: triggering power-off...\n", __func__); | |
100 | ||
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)); | |
109 | ||
110 | /* send the power-off command 'A' to PIC */ | |
111 | writel('A', UART1_REG(TX)); | |
112 | } | |
113 |