// SPDX-License-Identifier: GPL-2.0-or-later /* * Buffalo Terastation Pro II/Live Board Setup * * Maintainer: Sylver Bruneau */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 */ register_platform_power_off(tsp2_power_off); } MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live") /* Maintainer: Sylver Bruneau */ .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