forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
366 lines
9.2 KiB
366 lines
9.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* Buffalo Terastation Pro II/Live Board Setup |
|
* |
|
* Maintainer: Sylver Bruneau <[email protected]> |
|
*/ |
|
#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 <[email protected]> */ |
|
.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
|
|
|