367 lines
9.2 KiB
C
367 lines
9.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Buffalo Terastation Pro II/Live Board Setup
|
|
*
|
|
* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
|
|
*/
|
|
#include <linux/gpio.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/mtd/physmap.h>
|
|
#include <linux/mv643xx_eth.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/serial_reg.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/pci.h>
|
|
#include "common.h"
|
|
#include "mpp.h"
|
|
#include "orion5x.h"
|
|
|
|
/*****************************************************************************
|
|
* Terastation Pro 2/Live Info
|
|
****************************************************************************/
|
|
|
|
/*
|
|
* Terastation Pro 2 hardware :
|
|
* - Marvell 88F5281-D0
|
|
* - Marvell 88SX6042 SATA controller (PCI)
|
|
* - Marvell 88E1118 Gigabit Ethernet PHY
|
|
* - 256KB NOR flash
|
|
* - 128MB of DDR RAM
|
|
* - PCIe port (not equipped)
|
|
*/
|
|
|
|
/*
|
|
* 256K NOR flash Device bus boot chip select
|
|
*/
|
|
|
|
#define TSP2_NOR_BOOT_BASE 0xf4000000
|
|
#define TSP2_NOR_BOOT_SIZE SZ_256K
|
|
|
|
/*****************************************************************************
|
|
* 256KB NOR Flash on BOOT Device
|
|
****************************************************************************/
|
|
|
|
static struct physmap_flash_data tsp2_nor_flash_data = {
|
|
.width = 1,
|
|
};
|
|
|
|
static struct resource tsp2_nor_flash_resource = {
|
|
.flags = IORESOURCE_MEM,
|
|
.start = TSP2_NOR_BOOT_BASE,
|
|
.end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1,
|
|
};
|
|
|
|
static struct platform_device tsp2_nor_flash = {
|
|
.name = "physmap-flash",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &tsp2_nor_flash_data,
|
|
},
|
|
.num_resources = 1,
|
|
.resource = &tsp2_nor_flash_resource,
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* PCI
|
|
****************************************************************************/
|
|
#define TSP2_PCI_SLOT0_OFFS 7
|
|
#define TSP2_PCI_SLOT0_IRQ_PIN 11
|
|
|
|
static void __init tsp2_pci_preinit(void)
|
|
{
|
|
int pin;
|
|
|
|
/*
|
|
* Configure PCI GPIO IRQ pins
|
|
*/
|
|
pin = TSP2_PCI_SLOT0_IRQ_PIN;
|
|
if (gpio_request(pin, "PCI Int1") == 0) {
|
|
if (gpio_direction_input(pin) == 0) {
|
|
irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW);
|
|
} else {
|
|
printk(KERN_ERR "tsp2_pci_preinit failed "
|
|
"to set_irq_type pin %d\n", pin);
|
|
gpio_free(pin);
|
|
}
|
|
} else {
|
|
printk(KERN_ERR "tsp2_pci_preinit failed to "
|
|
"gpio_request %d\n", pin);
|
|
}
|
|
}
|
|
|
|
static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
int irq;
|
|
|
|
/*
|
|
* Check for devices with hard-wired IRQs.
|
|
*/
|
|
irq = orion5x_pci_map_irq(dev, slot, pin);
|
|
if (irq != -1)
|
|
return irq;
|
|
|
|
/*
|
|
* PCI IRQs are connected via GPIOs.
|
|
*/
|
|
if (slot == TSP2_PCI_SLOT0_OFFS)
|
|
return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static struct hw_pci tsp2_pci __initdata = {
|
|
.nr_controllers = 2,
|
|
.preinit = tsp2_pci_preinit,
|
|
.setup = orion5x_pci_sys_setup,
|
|
.scan = orion5x_pci_sys_scan_bus,
|
|
.map_irq = tsp2_pci_map_irq,
|
|
};
|
|
|
|
static int __init tsp2_pci_init(void)
|
|
{
|
|
if (machine_is_terastation_pro2())
|
|
pci_common_init(&tsp2_pci);
|
|
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(tsp2_pci_init);
|
|
|
|
/*****************************************************************************
|
|
* Ethernet
|
|
****************************************************************************/
|
|
|
|
static struct mv643xx_eth_platform_data tsp2_eth_data = {
|
|
.phy_addr = 0,
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* RTC 5C372a on I2C bus
|
|
****************************************************************************/
|
|
|
|
#define TSP2_RTC_GPIO 9
|
|
|
|
static struct i2c_board_info __initdata tsp2_i2c_rtc = {
|
|
I2C_BOARD_INFO("rs5c372a", 0x32),
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* Terastation Pro II specific power off method via UART1-attached
|
|
* microcontroller
|
|
****************************************************************************/
|
|
|
|
#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
|
|
|
|
static int tsp2_miconread(unsigned char *buf, int count)
|
|
{
|
|
int i;
|
|
int timeout;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
timeout = 10;
|
|
|
|
while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
|
|
if (--timeout == 0)
|
|
break;
|
|
udelay(1000);
|
|
}
|
|
|
|
if (timeout == 0)
|
|
break;
|
|
buf[i] = readl(UART1_REG(RX));
|
|
}
|
|
|
|
/* return read bytes */
|
|
return i;
|
|
}
|
|
|
|
static int tsp2_miconwrite(const unsigned char *buf, int count)
|
|
{
|
|
int i = 0;
|
|
|
|
while (count--) {
|
|
while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
|
|
barrier();
|
|
writel(buf[i++], UART1_REG(TX));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tsp2_miconsend(const unsigned char *data, int count)
|
|
{
|
|
int i;
|
|
unsigned char checksum = 0;
|
|
unsigned char recv_buf[40];
|
|
unsigned char send_buf[40];
|
|
unsigned char correct_ack[3];
|
|
int retry = 2;
|
|
|
|
/* Generate checksum */
|
|
for (i = 0; i < count; i++)
|
|
checksum -= data[i];
|
|
|
|
do {
|
|
/* Send data */
|
|
tsp2_miconwrite(data, count);
|
|
|
|
/* send checksum */
|
|
tsp2_miconwrite(&checksum, 1);
|
|
|
|
if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
|
|
printk(KERN_ERR ">%s: receive failed.\n", __func__);
|
|
|
|
/* send preamble to clear the receive buffer */
|
|
memset(&send_buf, 0xff, sizeof(send_buf));
|
|
tsp2_miconwrite(send_buf, sizeof(send_buf));
|
|
|
|
/* make dummy reads */
|
|
mdelay(100);
|
|
tsp2_miconread(recv_buf, sizeof(recv_buf));
|
|
} else {
|
|
/* Generate expected ack */
|
|
correct_ack[0] = 0x01;
|
|
correct_ack[1] = data[1];
|
|
correct_ack[2] = 0x00;
|
|
|
|
/* checksum Check */
|
|
if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
|
|
recv_buf[3]) & 0xFF) {
|
|
printk(KERN_ERR ">%s: Checksum Error : "
|
|
"Received data[%02x, %02x, %02x, %02x]"
|
|
"\n", __func__, recv_buf[0],
|
|
recv_buf[1], recv_buf[2], recv_buf[3]);
|
|
} else {
|
|
/* Check Received Data */
|
|
if (correct_ack[0] == recv_buf[0] &&
|
|
correct_ack[1] == recv_buf[1] &&
|
|
correct_ack[2] == recv_buf[2]) {
|
|
/* Interval for next command */
|
|
mdelay(10);
|
|
|
|
/* Receive ACK */
|
|
return 0;
|
|
}
|
|
}
|
|
/* Received NAK or illegal Data */
|
|
printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
|
|
"Received\n", __func__);
|
|
}
|
|
} while (retry--);
|
|
|
|
/* Interval for next command */
|
|
mdelay(10);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void tsp2_power_off(void)
|
|
{
|
|
const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
|
|
const unsigned char shutdownwait[] = {0x00, 0x0c};
|
|
const unsigned char poweroff[] = {0x00, 0x06};
|
|
/* 38400 baud divisor */
|
|
const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
|
|
|
|
pr_info("%s: triggering power-off...\n", __func__);
|
|
|
|
/* hijack uart1 and reset into sane state (38400,8n1,even parity) */
|
|
writel(0x83, UART1_REG(LCR));
|
|
writel(divisor & 0xff, UART1_REG(DLL));
|
|
writel((divisor >> 8) & 0xff, UART1_REG(DLM));
|
|
writel(0x1b, UART1_REG(LCR));
|
|
writel(0x00, UART1_REG(IER));
|
|
writel(0x07, UART1_REG(FCR));
|
|
writel(0x00, UART1_REG(MCR));
|
|
|
|
/* Send the commands to shutdown the Terastation Pro II */
|
|
tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ;
|
|
tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ;
|
|
tsp2_miconsend(poweroff, sizeof(poweroff));
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* General Setup
|
|
****************************************************************************/
|
|
static unsigned int tsp2_mpp_modes[] __initdata = {
|
|
MPP0_PCIE_RST_OUTn,
|
|
MPP1_UNUSED,
|
|
MPP2_UNUSED,
|
|
MPP3_UNUSED,
|
|
MPP4_NAND, /* BOOT NAND Flash REn */
|
|
MPP5_NAND, /* BOOT NAND Flash WEn */
|
|
MPP6_NAND, /* BOOT NAND Flash HREn[0] */
|
|
MPP7_NAND, /* BOOT NAND Flash WEn[0] */
|
|
MPP8_GPIO, /* MICON int */
|
|
MPP9_GPIO, /* RTC int */
|
|
MPP10_UNUSED,
|
|
MPP11_GPIO, /* PCI Int A */
|
|
MPP12_UNUSED,
|
|
MPP13_GPIO, /* UPS on UART0 enable */
|
|
MPP14_GPIO, /* UPS low battery detection */
|
|
MPP15_UNUSED,
|
|
MPP16_UART, /* UART1 RXD */
|
|
MPP17_UART, /* UART1 TXD */
|
|
MPP18_UART, /* UART1 CTSn */
|
|
MPP19_UART, /* UART1 RTSn */
|
|
0,
|
|
};
|
|
|
|
static void __init tsp2_init(void)
|
|
{
|
|
/*
|
|
* Setup basic Orion functions. Need to be called early.
|
|
*/
|
|
orion5x_init();
|
|
|
|
orion5x_mpp_conf(tsp2_mpp_modes);
|
|
|
|
/*
|
|
* Configure peripherals.
|
|
*/
|
|
mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
|
|
ORION_MBUS_DEVBUS_BOOT_ATTR,
|
|
TSP2_NOR_BOOT_BASE,
|
|
TSP2_NOR_BOOT_SIZE);
|
|
platform_device_register(&tsp2_nor_flash);
|
|
|
|
orion5x_ehci0_init();
|
|
orion5x_eth_init(&tsp2_eth_data);
|
|
orion5x_i2c_init();
|
|
orion5x_uart0_init();
|
|
orion5x_uart1_init();
|
|
|
|
/* Get RTC IRQ and register the chip */
|
|
if (gpio_request(TSP2_RTC_GPIO, "rtc") == 0) {
|
|
if (gpio_direction_input(TSP2_RTC_GPIO) == 0)
|
|
tsp2_i2c_rtc.irq = gpio_to_irq(TSP2_RTC_GPIO);
|
|
else
|
|
gpio_free(TSP2_RTC_GPIO);
|
|
}
|
|
if (tsp2_i2c_rtc.irq == 0)
|
|
pr_warn("tsp2_init: failed to get RTC IRQ\n");
|
|
i2c_register_board_info(0, &tsp2_i2c_rtc, 1);
|
|
|
|
/* register Terastation Pro II specific power-off method */
|
|
pm_power_off = tsp2_power_off;
|
|
}
|
|
|
|
MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live")
|
|
/* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */
|
|
.atag_offset = 0x100,
|
|
.nr_irqs = ORION5X_NR_IRQS,
|
|
.init_machine = tsp2_init,
|
|
.map_io = orion5x_map_io,
|
|
.init_early = orion5x_init_early,
|
|
.init_irq = orion5x_init_irq,
|
|
.init_time = orion5x_timer_init,
|
|
.fixup = tag_fixup_mem32,
|
|
.restart = orion5x_restart,
|
|
MACHINE_END
|