/* * arch/arm/mach-kirkwood/common.c * * Core functions for Marvell Kirkwood SoCs * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "common.h" /***************************************************************************** * I/O Address Mapping ****************************************************************************/ static struct map_desc kirkwood_io_desc[] __initdata = { { .virtual = KIRKWOOD_PCIE_IO_VIRT_BASE, .pfn = __phys_to_pfn(KIRKWOOD_PCIE_IO_PHYS_BASE), .length = KIRKWOOD_PCIE_IO_SIZE, .type = MT_DEVICE, }, { .virtual = KIRKWOOD_PCIE1_IO_VIRT_BASE, .pfn = __phys_to_pfn(KIRKWOOD_PCIE1_IO_PHYS_BASE), .length = KIRKWOOD_PCIE1_IO_SIZE, .type = MT_DEVICE, }, { .virtual = KIRKWOOD_REGS_VIRT_BASE, .pfn = __phys_to_pfn(KIRKWOOD_REGS_PHYS_BASE), .length = KIRKWOOD_REGS_SIZE, .type = MT_DEVICE, }, }; void __init kirkwood_map_io(void) { iotable_init(kirkwood_io_desc, ARRAY_SIZE(kirkwood_io_desc)); } /* * Default clock control bits. Any bit _not_ set in this variable * will be cleared from the hardware after platform devices have been * registered. Some reserved bits must be set to 1. */ unsigned int kirkwood_clk_ctrl = CGC_DUNIT | CGC_RESERVED; /***************************************************************************** * CLK tree ****************************************************************************/ static DEFINE_SPINLOCK(gating_lock); static struct clk *tclk; static struct clk __init *kirkwood_register_gate(const char *name, u8 bit_idx) { return clk_register_gate(NULL, name, "tclk", CLK_IGNORE_UNUSED, (void __iomem *)CLOCK_GATING_CTRL, bit_idx, 0, &gating_lock); } void __init kirkwood_clk_init(void) { struct clk *runit, *ge0, *ge1, *sata0, *sata1, *usb0, *sdio; tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT, kirkwood_tclk); runit = kirkwood_register_gate("runit", CGC_BIT_RUNIT); ge0 = kirkwood_register_gate("ge0", CGC_BIT_GE0); ge1 = kirkwood_register_gate("ge1", CGC_BIT_GE1); sata0 = kirkwood_register_gate("sata0", CGC_BIT_SATA0); sata1 = kirkwood_register_gate("sata1", CGC_BIT_SATA1); usb0 = kirkwood_register_gate("usb0", CGC_BIT_USB0); sdio = kirkwood_register_gate("sdio", CGC_BIT_SDIO); kirkwood_register_gate("crypto", CGC_BIT_CRYPTO); kirkwood_register_gate("xor0", CGC_BIT_XOR0); kirkwood_register_gate("xor1", CGC_BIT_XOR1); kirkwood_register_gate("pex0", CGC_BIT_PEX0); kirkwood_register_gate("pex1", CGC_BIT_PEX1); kirkwood_register_gate("audio", CGC_BIT_AUDIO); kirkwood_register_gate("tdm", CGC_BIT_TDM); kirkwood_register_gate("tsu", CGC_BIT_TSU); /* clkdev entries, mapping clks to devices */ orion_clkdev_add(NULL, "orion_spi.0", runit); orion_clkdev_add(NULL, "orion_spi.1", runit); orion_clkdev_add(NULL, MV643XX_ETH_NAME ".0", ge0); orion_clkdev_add(NULL, MV643XX_ETH_NAME ".1", ge1); orion_clkdev_add(NULL, "orion_wdt", tclk); orion_clkdev_add("0", "sata_mv.0", sata0); orion_clkdev_add("1", "sata_mv.0", sata1); orion_clkdev_add(NULL, "orion-ehci.0", usb0); orion_clkdev_add(NULL, "orion_nand", runit); orion_clkdev_add(NULL, "mvsdio", sdio); } /***************************************************************************** * EHCI0 ****************************************************************************/ void __init kirkwood_ehci_init(void) { kirkwood_clk_ctrl |= CGC_USB0; orion_ehci_init(USB_PHYS_BASE, IRQ_KIRKWOOD_USB, EHCI_PHY_NA); } /***************************************************************************** * GE00 ****************************************************************************/ void __init kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data) { kirkwood_clk_ctrl |= CGC_GE0; orion_ge00_init(eth_data, GE00_PHYS_BASE, IRQ_KIRKWOOD_GE00_SUM, IRQ_KIRKWOOD_GE00_ERR); } /***************************************************************************** * GE01 ****************************************************************************/ void __init kirkwood_ge01_init(struct mv643xx_eth_platform_data *eth_data) { kirkwood_clk_ctrl |= CGC_GE1; orion_ge01_init(eth_data, GE01_PHYS_BASE, IRQ_KIRKWOOD_GE01_SUM, IRQ_KIRKWOOD_GE01_ERR); } /***************************************************************************** * Ethernet switch ****************************************************************************/ void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq) { orion_ge00_switch_init(d, irq); } /***************************************************************************** * NAND flash ****************************************************************************/ static struct resource kirkwood_nand_resource = { .flags = IORESOURCE_MEM, .start = KIRKWOOD_NAND_MEM_PHYS_BASE, .end = KIRKWOOD_NAND_MEM_PHYS_BASE + KIRKWOOD_NAND_MEM_SIZE - 1, }; static struct orion_nand_data kirkwood_nand_data = { .cle = 0, .ale = 1, .width = 8, }; static struct platform_device kirkwood_nand_flash = { .name = "orion_nand", .id = -1, .dev = { .platform_data = &kirkwood_nand_data, }, .resource = &kirkwood_nand_resource, .num_resources = 1, }; void __init kirkwood_nand_init(struct mtd_partition *parts, int nr_parts, int chip_delay) { kirkwood_clk_ctrl |= CGC_RUNIT; kirkwood_nand_data.parts = parts; kirkwood_nand_data.nr_parts = nr_parts; kirkwood_nand_data.chip_delay = chip_delay; platform_device_register(&kirkwood_nand_flash); } void __init kirkwood_nand_init_rnb(struct mtd_partition *parts, int nr_parts, int (*dev_ready)(struct mtd_info *)) { kirkwood_clk_ctrl |= CGC_RUNIT; kirkwood_nand_data.parts = parts; kirkwood_nand_data.nr_parts = nr_parts; kirkwood_nand_data.dev_ready = dev_ready; platform_device_register(&kirkwood_nand_flash); } /***************************************************************************** * SoC RTC ****************************************************************************/ static void __init kirkwood_rtc_init(void) { orion_rtc_init(RTC_PHYS_BASE, IRQ_KIRKWOOD_RTC); } /***************************************************************************** * SATA ****************************************************************************/ void __init kirkwood_sata_init(struct mv_sata_platform_data *sata_data) { kirkwood_clk_ctrl |= CGC_SATA0; if (sata_data->n_ports > 1) kirkwood_clk_ctrl |= CGC_SATA1; orion_sata_init(sata_data, SATA_PHYS_BASE, IRQ_KIRKWOOD_SATA); } /***************************************************************************** * SD/SDIO/MMC ****************************************************************************/ static struct resource mvsdio_resources[] = { [0] = { .start = SDIO_PHYS_BASE, .end = SDIO_PHYS_BASE + SZ_1K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = IRQ_KIRKWOOD_SDIO, .end = IRQ_KIRKWOOD_SDIO, .flags = IORESOURCE_IRQ, }, }; static u64 mvsdio_dmamask = DMA_BIT_MASK(32); static struct platform_device kirkwood_sdio = { .name = "mvsdio", .id = -1, .dev = { .dma_mask = &mvsdio_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), }, .num_resources = ARRAY_SIZE(mvsdio_resources), .resource = mvsdio_resources, }; void __init kirkwood_sdio_init(struct mvsdio_platform_data *mvsdio_data) { u32 dev, rev; kirkwood_pcie_id(&dev, &rev); if (rev == 0 && dev != MV88F6282_DEV_ID) /* catch all Kirkwood Z0's */ mvsdio_data->clock = 100000000; else mvsdio_data->clock = 200000000; kirkwood_clk_ctrl |= CGC_SDIO; kirkwood_sdio.dev.platform_data = mvsdio_data; platform_device_register(&kirkwood_sdio); } /***************************************************************************** * SPI ****************************************************************************/ void __init kirkwood_spi_init() { kirkwood_clk_ctrl |= CGC_RUNIT; orion_spi_init(SPI_PHYS_BASE); } /***************************************************************************** * I2C ****************************************************************************/ void __init kirkwood_i2c_init(void) { orion_i2c_init(I2C_PHYS_BASE, IRQ_KIRKWOOD_TWSI, 8); } /***************************************************************************** * UART0 ****************************************************************************/ void __init kirkwood_uart0_init(void) { orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE, IRQ_KIRKWOOD_UART_0, tclk); } /***************************************************************************** * UART1 ****************************************************************************/ void __init kirkwood_uart1_init(void) { orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE, IRQ_KIRKWOOD_UART_1, tclk); } /***************************************************************************** * Cryptographic Engines and Security Accelerator (CESA) ****************************************************************************/ void __init kirkwood_crypto_init(void) { kirkwood_clk_ctrl |= CGC_CRYPTO; orion_crypto_init(CRYPTO_PHYS_BASE, KIRKWOOD_SRAM_PHYS_BASE, KIRKWOOD_SRAM_SIZE, IRQ_KIRKWOOD_CRYPTO); } /***************************************************************************** * XOR0 ****************************************************************************/ void __init kirkwood_xor0_init(void) { kirkwood_clk_ctrl |= CGC_XOR0; orion_xor0_init(XOR0_PHYS_BASE, XOR0_HIGH_PHYS_BASE, IRQ_KIRKWOOD_XOR_00, IRQ_KIRKWOOD_XOR_01); } /***************************************************************************** * XOR1 ****************************************************************************/ void __init kirkwood_xor1_init(void) { kirkwood_clk_ctrl |= CGC_XOR1; orion_xor1_init(XOR1_PHYS_BASE, XOR1_HIGH_PHYS_BASE, IRQ_KIRKWOOD_XOR_10, IRQ_KIRKWOOD_XOR_11); } /***************************************************************************** * Watchdog ****************************************************************************/ void __init kirkwood_wdt_init(void) { orion_wdt_init(); } /***************************************************************************** * Time handling ****************************************************************************/ void __init kirkwood_init_early(void) { orion_time_set_base(TIMER_VIRT_BASE); } int kirkwood_tclk; static int __init kirkwood_find_tclk(void) { u32 dev, rev; kirkwood_pcie_id(&dev, &rev); if (dev == MV88F6281_DEV_ID || dev == MV88F6282_DEV_ID) if (((readl(SAMPLE_AT_RESET) >> 21) & 1) == 0) return 200000000; return 166666667; } static void __init kirkwood_timer_init(void) { kirkwood_tclk = kirkwood_find_tclk(); orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR, IRQ_KIRKWOOD_BRIDGE, kirkwood_tclk); } struct sys_timer kirkwood_timer = { .init = kirkwood_timer_init, }; /***************************************************************************** * Audio ****************************************************************************/ static struct resource kirkwood_i2s_resources[] = { [0] = { .start = AUDIO_PHYS_BASE, .end = AUDIO_PHYS_BASE + SZ_16K - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = IRQ_KIRKWOOD_I2S, .end = IRQ_KIRKWOOD_I2S, .flags = IORESOURCE_IRQ, }, }; static struct kirkwood_asoc_platform_data kirkwood_i2s_data = { .burst = 128, }; static struct platform_device kirkwood_i2s_device = { .name = "kirkwood-i2s", .id = -1, .num_resources = ARRAY_SIZE(kirkwood_i2s_resources), .resource = kirkwood_i2s_resources, .dev = { .platform_data = &kirkwood_i2s_data, }, }; static struct platform_device kirkwood_pcm_device = { .name = "kirkwood-pcm-audio", .id = -1, }; void __init kirkwood_audio_init(void) { kirkwood_clk_ctrl |= CGC_AUDIO; platform_device_register(&kirkwood_i2s_device); platform_device_register(&kirkwood_pcm_device); } /***************************************************************************** * General ****************************************************************************/ /* * Identify device ID and revision. */ char * __init kirkwood_id(void) { u32 dev, rev; kirkwood_pcie_id(&dev, &rev); if (dev == MV88F6281_DEV_ID) { if (rev == MV88F6281_REV_Z0) return "MV88F6281-Z0"; else if (rev == MV88F6281_REV_A0) return "MV88F6281-A0"; else if (rev == MV88F6281_REV_A1) return "MV88F6281-A1"; else return "MV88F6281-Rev-Unsupported"; } else if (dev == MV88F6192_DEV_ID) { if (rev == MV88F6192_REV_Z0) return "MV88F6192-Z0"; else if (rev == MV88F6192_REV_A0) return "MV88F6192-A0"; else if (rev == MV88F6192_REV_A1) return "MV88F6192-A1"; else return "MV88F6192-Rev-Unsupported"; } else if (dev == MV88F6180_DEV_ID) { if (rev == MV88F6180_REV_A0) return "MV88F6180-Rev-A0"; else if (rev == MV88F6180_REV_A1) return "MV88F6180-Rev-A1"; else return "MV88F6180-Rev-Unsupported"; } else if (dev == MV88F6282_DEV_ID) { if (rev == MV88F6282_REV_A0) return "MV88F6282-Rev-A0"; else if (rev == MV88F6282_REV_A1) return "MV88F6282-Rev-A1"; else return "MV88F6282-Rev-Unsupported"; } else { return "Device-Unknown"; } } void __init kirkwood_l2_init(void) { #ifdef CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH writel(readl(L2_CONFIG_REG) | L2_WRITETHROUGH, L2_CONFIG_REG); feroceon_l2_init(1); #else writel(readl(L2_CONFIG_REG) & ~L2_WRITETHROUGH, L2_CONFIG_REG); feroceon_l2_init(0); #endif } void __init kirkwood_init(void) { printk(KERN_INFO "Kirkwood: %s, TCLK=%d.\n", kirkwood_id(), kirkwood_tclk); /* * Disable propagation of mbus errors to the CPU local bus, * as this causes mbus errors (which can occur for example * for PCI aborts) to throw CPU aborts, which we're not set * up to deal with. */ writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG); kirkwood_setup_cpu_mbus(); #ifdef CONFIG_CACHE_FEROCEON_L2 kirkwood_l2_init(); #endif /* Setup root of clk tree */ kirkwood_clk_init(); /* internal devices that every board has */ kirkwood_rtc_init(); kirkwood_wdt_init(); kirkwood_xor0_init(); kirkwood_xor1_init(); kirkwood_crypto_init(); #ifdef CONFIG_KEXEC kexec_reinit = kirkwood_enable_pcie; #endif } static int __init kirkwood_clock_gate(void) { unsigned int curr = readl(CLOCK_GATING_CTRL); u32 dev, rev; kirkwood_pcie_id(&dev, &rev); printk(KERN_DEBUG "Gating clock of unused units\n"); printk(KERN_DEBUG "before: 0x%08x\n", curr); /* Make sure those units are accessible */ writel(curr | CGC_SATA0 | CGC_SATA1 | CGC_PEX0 | CGC_PEX1, CLOCK_GATING_CTRL); /* For SATA: first shutdown the phy */ if (!(kirkwood_clk_ctrl & CGC_SATA0)) { /* Disable PLL and IVREF */ writel(readl(SATA0_PHY_MODE_2) & ~0xf, SATA0_PHY_MODE_2); /* Disable PHY */ writel(readl(SATA0_IF_CTRL) | 0x200, SATA0_IF_CTRL); } if (!(kirkwood_clk_ctrl & CGC_SATA1)) { /* Disable PLL and IVREF */ writel(readl(SATA1_PHY_MODE_2) & ~0xf, SATA1_PHY_MODE_2); /* Disable PHY */ writel(readl(SATA1_IF_CTRL) | 0x200, SATA1_IF_CTRL); } /* For PCIe: first shutdown the phy */ if (!(kirkwood_clk_ctrl & CGC_PEX0)) { writel(readl(PCIE_LINK_CTRL) | 0x10, PCIE_LINK_CTRL); while (1) if (readl(PCIE_STATUS) & 0x1) break; writel(readl(PCIE_LINK_CTRL) & ~0x10, PCIE_LINK_CTRL); } /* For PCIe 1: first shutdown the phy */ if (dev == MV88F6282_DEV_ID) { if (!(kirkwood_clk_ctrl & CGC_PEX1)) { writel(readl(PCIE1_LINK_CTRL) | 0x10, PCIE1_LINK_CTRL); while (1) if (readl(PCIE1_STATUS) & 0x1) break; writel(readl(PCIE1_LINK_CTRL) & ~0x10, PCIE1_LINK_CTRL); } } else /* keep this bit set for devices that don't have PCIe1 */ kirkwood_clk_ctrl |= CGC_PEX1; /* Now gate clock the required units */ writel(kirkwood_clk_ctrl, CLOCK_GATING_CTRL); printk(KERN_DEBUG " after: 0x%08x\n", readl(CLOCK_GATING_CTRL)); return 0; } late_initcall(kirkwood_clock_gate); void kirkwood_restart(char mode, const char *cmd) { /* * Enable soft reset to assert RSTOUTn. */ writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK); /* * Assert soft reset. */ writel(SOFT_RESET, SYSTEM_SOFT_RESET); while (1) ; }