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#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/mtd/physmap.h>
#include <linux/spi/flash.h>
#include <linux/spi/spi.h>
#include <linux/serial_reg.h>
#include <mach/kirkwood.h>
#include "common.h"
#include "tsx1x-common.h"
/*
* QNAP TS-x1x Boards flash
*/
/****************************************************************************
* 16 MiB NOR flash. The struct mtd_partition is not in the same order as the
* partitions on the device because we want to keep compatibility with
* the QNAP firmware.
* Layout as used by QNAP:
* 0x00000000-0x00080000 : "U-Boot"
* 0x00200000-0x00400000 : "Kernel"
* 0x00400000-0x00d00000 : "RootFS"
* 0x00d00000-0x01000000 : "RootFS2"
* 0x00080000-0x000c0000 : "U-Boot Config"
* 0x000c0000-0x00200000 : "NAS Config"
*
* We'll use "RootFS1" instead of "RootFS" to stay compatible with the layout
* used by the QNAP TS-109/TS-209.
*
***************************************************************************/
static struct mtd_partition qnap_tsx1x_partitions[] = {
{
.name = "U-Boot",
.size = 0x00080000,
.offset = 0,
.mask_flags = MTD_WRITEABLE,
}, {
.name = "Kernel",
.size = 0x00200000,
.offset = 0x00200000,
}, {
.name = "RootFS1",
.size = 0x00900000,
.offset = 0x00400000,
}, {
.name = "RootFS2",
.size = 0x00300000,
.offset = 0x00d00000,
}, {
.name = "U-Boot Config",
.size = 0x00040000,
.offset = 0x00080000,
}, {
.name = "NAS Config",
.size = 0x00140000,
.offset = 0x000c0000,
},
};
static const struct flash_platform_data qnap_tsx1x_flash = {
.type = "m25p128",
.name = "spi_flash",
.parts = qnap_tsx1x_partitions,
.nr_parts = ARRAY_SIZE(qnap_tsx1x_partitions),
};
static struct spi_board_info __initdata qnap_tsx1x_spi_slave_info[] = {
{
.modalias = "m25p80",
.platform_data = &qnap_tsx1x_flash,
.irq = -1,
.max_speed_hz = 20000000,
.bus_num = 0,
.chip_select = 0,
},
};
void __init qnap_tsx1x_register_flash(void)
{
spi_register_board_info(qnap_tsx1x_spi_slave_info,
ARRAY_SIZE(qnap_tsx1x_spi_slave_info));
kirkwood_spi_init();
}
/*****************************************************************************
* QNAP TS-x1x specific power off method via UART1-attached PIC
****************************************************************************/
#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
void qnap_tsx1x_power_off(void)
{
/* 19200 baud divisor */
const unsigned divisor = ((kirkwood_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));
}
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