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 18 * partitions on the device because we want to keep compatability with 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 33struct 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 62const 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 69struct 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 80void __init qnap_tsx1x_register_flash(void) 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 94void 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