/* * From Coreboot * Copyright (C) 2008-2009 coresystems GmbH * * SPDX-License-Identifier: GPL-2.0 */ #include #include #include #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; static void common_sata_init(struct udevice *dev, unsigned int port_map) { u32 reg32; u16 reg16; /* Set IDE I/O Configuration */ reg32 = SIG_MODE_PRI_NORMAL | FAST_PCB1 | FAST_PCB0 | PCB1 | PCB0; dm_pci_write_config32(dev, IDE_CONFIG, reg32); /* Port enable */ dm_pci_read_config16(dev, 0x92, ®16); reg16 &= ~0x3f; reg16 |= port_map; dm_pci_write_config16(dev, 0x92, reg16); /* SATA Initialization register */ port_map &= 0xff; dm_pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) | 0x183); } static void bd82x6x_sata_init(struct udevice *dev, struct udevice *pch) { unsigned int port_map, speed_support, port_tx; const void *blob = gd->fdt_blob; int node = dev->of_offset; const char *mode; u32 reg32; u16 reg16; debug("SATA: Initializing...\n"); /* SATA configuration */ port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0); speed_support = fdtdec_get_int(blob, node, "sata_interface_speed_support", 0); mode = fdt_getprop(blob, node, "intel,sata-mode", NULL); if (!mode || !strcmp(mode, "ahci")) { u32 abar; debug("SATA: Controller in AHCI mode\n"); /* Set timings */ dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | IDE_PPE0 | IDE_IE0 | IDE_TIME0); dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS); /* Sync DMA */ dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0); dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0001); common_sata_init(dev, 0x8000 | port_map); /* Initialize AHCI memory-mapped space */ abar = dm_pci_read_bar32(dev, 5); debug("ABAR: %08X\n", abar); /* CAP (HBA Capabilities) : enable power management */ reg32 = readl(abar + 0x00); reg32 |= 0x0c006000; /* set PSC+SSC+SALP+SSS */ reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */ /* Set ISS, if available */ if (speed_support) { reg32 &= ~0x00f00000; reg32 |= (speed_support & 0x03) << 20; } writel(reg32, abar + 0x00); /* PI (Ports implemented) */ writel(port_map, abar + 0x0c); (void) readl(abar + 0x0c); /* Read back 1 */ (void) readl(abar + 0x0c); /* Read back 2 */ /* CAP2 (HBA Capabilities Extended)*/ reg32 = readl(abar + 0x24); reg32 &= ~0x00000002; writel(reg32, abar + 0x24); /* VSP (Vendor Specific Register */ reg32 = readl(abar + 0xa0); reg32 &= ~0x00000005; writel(reg32, abar + 0xa0); } else if (!strcmp(mode, "combined")) { debug("SATA: Controller in combined mode\n"); /* No AHCI: clear AHCI base */ dm_pci_write_bar32(dev, 5, 0x00000000); /* And without AHCI BAR no memory decoding */ dm_pci_read_config16(dev, PCI_COMMAND, ®16); reg16 &= ~PCI_COMMAND_MEMORY; dm_pci_write_config16(dev, PCI_COMMAND, reg16); dm_pci_write_config8(dev, 0x09, 0x80); /* Set timings */ dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS); dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | IDE_PPE0 | IDE_IE0 | IDE_TIME0); /* Sync DMA */ dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0); dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0200); common_sata_init(dev, port_map); } else { debug("SATA: Controller in plain-ide mode\n"); /* No AHCI: clear AHCI base */ dm_pci_write_bar32(dev, 5, 0x00000000); /* And without AHCI BAR no memory decoding */ dm_pci_read_config16(dev, PCI_COMMAND, ®16); reg16 &= ~PCI_COMMAND_MEMORY; dm_pci_write_config16(dev, PCI_COMMAND, reg16); /* * Native mode capable on both primary and secondary (0xa) * OR'ed with enabled (0x50) = 0xf */ dm_pci_write_config8(dev, 0x09, 0x8f); /* Set timings */ dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | IDE_PPE0 | IDE_IE0 | IDE_TIME0); dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | IDE_SITRE | IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | IDE_IE0 | IDE_TIME0); /* Sync DMA */ dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 | IDE_PSDE0); dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0201); common_sata_init(dev, port_map); } /* Set Gen3 Transmitter settings if needed */ port_tx = fdtdec_get_int(blob, node, "intel,sata-port0-gen3-tx", 0); if (port_tx) pch_iobp_update(pch, SATA_IOBP_SP0G3IR, 0, port_tx); port_tx = fdtdec_get_int(blob, node, "intel,sata-port1-gen3-tx", 0); if (port_tx) pch_iobp_update(pch, SATA_IOBP_SP1G3IR, 0, port_tx); /* Additional Programming Requirements */ pch_common_sir_write(dev, 0x04, 0x00001600); pch_common_sir_write(dev, 0x28, 0xa0000033); reg32 = pch_common_sir_read(dev, 0x54); reg32 &= 0xff000000; reg32 |= 0x5555aa; pch_common_sir_write(dev, 0x54, reg32); pch_common_sir_write(dev, 0x64, 0xcccc8484); reg32 = pch_common_sir_read(dev, 0x68); reg32 &= 0xffff0000; reg32 |= 0xcccc; pch_common_sir_write(dev, 0x68, reg32); reg32 = pch_common_sir_read(dev, 0x78); reg32 &= 0x0000ffff; reg32 |= 0x88880000; pch_common_sir_write(dev, 0x78, reg32); pch_common_sir_write(dev, 0x84, 0x001c7000); pch_common_sir_write(dev, 0x88, 0x88338822); pch_common_sir_write(dev, 0xa0, 0x001c7000); pch_common_sir_write(dev, 0xc4, 0x0c0c0c0c); pch_common_sir_write(dev, 0xc8, 0x0c0c0c0c); pch_common_sir_write(dev, 0xd4, 0x10000000); pch_iobp_update(pch, 0xea004001, 0x3fffffff, 0xc0000000); pch_iobp_update(pch, 0xea00408a, 0xfffffcff, 0x00000100); } static void bd82x6x_sata_enable(struct udevice *dev) { const void *blob = gd->fdt_blob; int node = dev->of_offset; unsigned port_map; const char *mode; u16 map = 0; /* * Set SATA controller mode early so the resource allocator can * properly assign IO/Memory resources for the controller. */ mode = fdt_getprop(blob, node, "intel,sata-mode", NULL); if (mode && !strcmp(mode, "ahci")) map = 0x0060; port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0); map |= (port_map ^ 0x3f) << 8; dm_pci_write_config16(dev, 0x90, map); } static int bd82x6x_sata_probe(struct udevice *dev) { struct udevice *pch; int ret; ret = uclass_first_device_err(UCLASS_PCH, &pch); if (ret) return ret; if (!(gd->flags & GD_FLG_RELOC)) bd82x6x_sata_enable(dev); else bd82x6x_sata_init(dev, pch); return 0; } static const struct udevice_id bd82x6x_ahci_ids[] = { { .compatible = "intel,pantherpoint-ahci" }, { } }; U_BOOT_DRIVER(ahci_ivybridge_drv) = { .name = "ahci_ivybridge", .id = UCLASS_AHCI, .of_match = bd82x6x_ahci_ids, .probe = bd82x6x_sata_probe, };