114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/physmap.h>
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#include <linux/spi/flash.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/orion_spi.h>
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#include <linux/serial_reg.h>
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#include <mach/kirkwood.h>
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#include "common.h"
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/*
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* QNAP TS-x1x Boards flash
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*/
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/****************************************************************************
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* 16 MiB NOR flash. The struct mtd_partition is not in the same order as the
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* partitions on the device because we want to keep compatibility with
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* the QNAP firmware.
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* Layout as used by QNAP:
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* 0x00000000-0x00080000 : "U-Boot"
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* 0x00200000-0x00400000 : "Kernel"
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* 0x00400000-0x00d00000 : "RootFS"
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* 0x00d00000-0x01000000 : "RootFS2"
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* 0x00080000-0x000c0000 : "U-Boot Config"
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* 0x000c0000-0x00200000 : "NAS Config"
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*
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* We'll use "RootFS1" instead of "RootFS" to stay compatible with the layout
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* used by the QNAP TS-109/TS-209.
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*
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***************************************************************************/
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struct mtd_partition qnap_tsx1x_partitions[] = {
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{
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.name = "U-Boot",
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.size = 0x00080000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "Kernel",
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.size = 0x00200000,
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.offset = 0x00200000,
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}, {
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.name = "RootFS1",
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.size = 0x00900000,
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.offset = 0x00400000,
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}, {
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.name = "RootFS2",
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.size = 0x00300000,
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.offset = 0x00d00000,
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}, {
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.name = "U-Boot Config",
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.size = 0x00040000,
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.offset = 0x00080000,
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}, {
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.name = "NAS Config",
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.size = 0x00140000,
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.offset = 0x000c0000,
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},
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};
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const struct flash_platform_data qnap_tsx1x_flash = {
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.type = "m25p128",
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.name = "spi_flash",
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.parts = qnap_tsx1x_partitions,
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.nr_parts = ARRAY_SIZE(qnap_tsx1x_partitions),
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};
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struct spi_board_info __initdata qnap_tsx1x_spi_slave_info[] = {
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{
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.modalias = "m25p80",
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.platform_data = &qnap_tsx1x_flash,
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.irq = -1,
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.max_speed_hz = 20000000,
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.bus_num = 0,
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.chip_select = 0,
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},
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};
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void __init qnap_tsx1x_register_flash(void)
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{
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spi_register_board_info(qnap_tsx1x_spi_slave_info,
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ARRAY_SIZE(qnap_tsx1x_spi_slave_info));
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kirkwood_spi_init();
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}
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/*****************************************************************************
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* QNAP TS-x1x specific power off method via UART1-attached PIC
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****************************************************************************/
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#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
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void qnap_tsx1x_power_off(void)
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{
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/* 19200 baud divisor */
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const unsigned divisor = ((kirkwood_tclk + (8 * 19200)) / (16 * 19200));
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pr_info("%s: triggering power-off...\n", __func__);
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/* hijack UART1 and reset into sane state (19200,8n1) */
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writel(0x83, UART1_REG(LCR));
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writel(divisor & 0xff, UART1_REG(DLL));
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writel((divisor >> 8) & 0xff, UART1_REG(DLM));
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writel(0x03, UART1_REG(LCR));
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writel(0x00, UART1_REG(IER));
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writel(0x00, UART1_REG(FCR));
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writel(0x00, UART1_REG(MCR));
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/* send the power-off command 'A' to PIC */
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writel('A', UART1_REG(TX));
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}
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