1 /* 2 * From Coreboot 3 * Copyright (C) 2008-2009 coresystems GmbH 4 * 5 * SPDX-License-Identifier: GPL-2.0 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <fdtdec.h> 11 #include <asm/io.h> 12 #include <asm/pch_common.h> 13 #include <asm/pci.h> 14 #include <asm/arch/pch.h> 15 #include <asm/arch/bd82x6x.h> 16 17 DECLARE_GLOBAL_DATA_PTR; 18 19 static void common_sata_init(struct udevice *dev, unsigned int port_map) 20 { 21 u32 reg32; 22 u16 reg16; 23 24 /* Set IDE I/O Configuration */ 25 reg32 = SIG_MODE_PRI_NORMAL | FAST_PCB1 | FAST_PCB0 | PCB1 | PCB0; 26 dm_pci_write_config32(dev, IDE_CONFIG, reg32); 27 28 /* Port enable */ 29 dm_pci_read_config16(dev, 0x92, ®16); 30 reg16 &= ~0x3f; 31 reg16 |= port_map; 32 dm_pci_write_config16(dev, 0x92, reg16); 33 34 /* SATA Initialization register */ 35 port_map &= 0xff; 36 dm_pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) | 0x183); 37 } 38 39 static void bd82x6x_sata_init(struct udevice *dev, struct udevice *pch) 40 { 41 unsigned int port_map, speed_support, port_tx; 42 const void *blob = gd->fdt_blob; 43 int node = dev->of_offset; 44 const char *mode; 45 u32 reg32; 46 u16 reg16; 47 48 debug("SATA: Initializing...\n"); 49 50 /* SATA configuration */ 51 port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0); 52 speed_support = fdtdec_get_int(blob, node, 53 "sata_interface_speed_support", 0); 54 55 mode = fdt_getprop(blob, node, "intel,sata-mode", NULL); 56 if (!mode || !strcmp(mode, "ahci")) { 57 u32 abar; 58 59 debug("SATA: Controller in AHCI mode\n"); 60 61 /* Set timings */ 62 dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | 63 IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | 64 IDE_PPE0 | IDE_IE0 | IDE_TIME0); 65 dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | 66 IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS); 67 68 /* Sync DMA */ 69 dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0); 70 dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0001); 71 72 common_sata_init(dev, 0x8000 | port_map); 73 74 /* Initialize AHCI memory-mapped space */ 75 abar = dm_pci_read_bar32(dev, 5); 76 debug("ABAR: %08X\n", abar); 77 /* CAP (HBA Capabilities) : enable power management */ 78 reg32 = readl(abar + 0x00); 79 reg32 |= 0x0c006000; /* set PSC+SSC+SALP+SSS */ 80 reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */ 81 /* Set ISS, if available */ 82 if (speed_support) { 83 reg32 &= ~0x00f00000; 84 reg32 |= (speed_support & 0x03) << 20; 85 } 86 writel(reg32, abar + 0x00); 87 /* PI (Ports implemented) */ 88 writel(port_map, abar + 0x0c); 89 (void) readl(abar + 0x0c); /* Read back 1 */ 90 (void) readl(abar + 0x0c); /* Read back 2 */ 91 /* CAP2 (HBA Capabilities Extended)*/ 92 reg32 = readl(abar + 0x24); 93 reg32 &= ~0x00000002; 94 writel(reg32, abar + 0x24); 95 /* VSP (Vendor Specific Register */ 96 reg32 = readl(abar + 0xa0); 97 reg32 &= ~0x00000005; 98 writel(reg32, abar + 0xa0); 99 } else if (!strcmp(mode, "combined")) { 100 debug("SATA: Controller in combined mode\n"); 101 102 /* No AHCI: clear AHCI base */ 103 dm_pci_write_bar32(dev, 5, 0x00000000); 104 /* And without AHCI BAR no memory decoding */ 105 dm_pci_read_config16(dev, PCI_COMMAND, ®16); 106 reg16 &= ~PCI_COMMAND_MEMORY; 107 dm_pci_write_config16(dev, PCI_COMMAND, reg16); 108 109 dm_pci_write_config8(dev, 0x09, 0x80); 110 111 /* Set timings */ 112 dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | 113 IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS); 114 dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | 115 IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | 116 IDE_PPE0 | IDE_IE0 | IDE_TIME0); 117 118 /* Sync DMA */ 119 dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0); 120 dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0200); 121 122 common_sata_init(dev, port_map); 123 } else { 124 debug("SATA: Controller in plain-ide mode\n"); 125 126 /* No AHCI: clear AHCI base */ 127 dm_pci_write_bar32(dev, 5, 0x00000000); 128 129 /* And without AHCI BAR no memory decoding */ 130 dm_pci_read_config16(dev, PCI_COMMAND, ®16); 131 reg16 &= ~PCI_COMMAND_MEMORY; 132 dm_pci_write_config16(dev, PCI_COMMAND, reg16); 133 134 /* 135 * Native mode capable on both primary and secondary (0xa) 136 * OR'ed with enabled (0x50) = 0xf 137 */ 138 dm_pci_write_config8(dev, 0x09, 0x8f); 139 140 /* Set timings */ 141 dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | 142 IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | 143 IDE_PPE0 | IDE_IE0 | IDE_TIME0); 144 dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | 145 IDE_SITRE | IDE_ISP_3_CLOCKS | 146 IDE_RCT_1_CLOCKS | IDE_IE0 | IDE_TIME0); 147 148 /* Sync DMA */ 149 dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 | IDE_PSDE0); 150 dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0201); 151 152 common_sata_init(dev, port_map); 153 } 154 155 /* Set Gen3 Transmitter settings if needed */ 156 port_tx = fdtdec_get_int(blob, node, "intel,sata-port0-gen3-tx", 0); 157 if (port_tx) 158 pch_iobp_update(pch, SATA_IOBP_SP0G3IR, 0, port_tx); 159 160 port_tx = fdtdec_get_int(blob, node, "intel,sata-port1-gen3-tx", 0); 161 if (port_tx) 162 pch_iobp_update(pch, SATA_IOBP_SP1G3IR, 0, port_tx); 163 164 /* Additional Programming Requirements */ 165 pch_common_sir_write(dev, 0x04, 0x00001600); 166 pch_common_sir_write(dev, 0x28, 0xa0000033); 167 reg32 = pch_common_sir_read(dev, 0x54); 168 reg32 &= 0xff000000; 169 reg32 |= 0x5555aa; 170 pch_common_sir_write(dev, 0x54, reg32); 171 pch_common_sir_write(dev, 0x64, 0xcccc8484); 172 reg32 = pch_common_sir_read(dev, 0x68); 173 reg32 &= 0xffff0000; 174 reg32 |= 0xcccc; 175 pch_common_sir_write(dev, 0x68, reg32); 176 reg32 = pch_common_sir_read(dev, 0x78); 177 reg32 &= 0x0000ffff; 178 reg32 |= 0x88880000; 179 pch_common_sir_write(dev, 0x78, reg32); 180 pch_common_sir_write(dev, 0x84, 0x001c7000); 181 pch_common_sir_write(dev, 0x88, 0x88338822); 182 pch_common_sir_write(dev, 0xa0, 0x001c7000); 183 pch_common_sir_write(dev, 0xc4, 0x0c0c0c0c); 184 pch_common_sir_write(dev, 0xc8, 0x0c0c0c0c); 185 pch_common_sir_write(dev, 0xd4, 0x10000000); 186 187 pch_iobp_update(pch, 0xea004001, 0x3fffffff, 0xc0000000); 188 pch_iobp_update(pch, 0xea00408a, 0xfffffcff, 0x00000100); 189 } 190 191 static void bd82x6x_sata_enable(struct udevice *dev) 192 { 193 const void *blob = gd->fdt_blob; 194 int node = dev->of_offset; 195 unsigned port_map; 196 const char *mode; 197 u16 map = 0; 198 199 /* 200 * Set SATA controller mode early so the resource allocator can 201 * properly assign IO/Memory resources for the controller. 202 */ 203 mode = fdt_getprop(blob, node, "intel,sata-mode", NULL); 204 if (mode && !strcmp(mode, "ahci")) 205 map = 0x0060; 206 port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0); 207 208 map |= (port_map ^ 0x3f) << 8; 209 dm_pci_write_config16(dev, 0x90, map); 210 } 211 212 static int bd82x6x_sata_probe(struct udevice *dev) 213 { 214 struct udevice *pch; 215 int ret; 216 217 ret = uclass_first_device_err(UCLASS_PCH, &pch); 218 if (ret) 219 return ret; 220 221 if (!(gd->flags & GD_FLG_RELOC)) 222 bd82x6x_sata_enable(dev); 223 else 224 bd82x6x_sata_init(dev, pch); 225 226 return 0; 227 } 228 229 static const struct udevice_id bd82x6x_ahci_ids[] = { 230 { .compatible = "intel,pantherpoint-ahci" }, 231 { } 232 }; 233 234 U_BOOT_DRIVER(ahci_ivybridge_drv) = { 235 .name = "ahci_ivybridge", 236 .id = UCLASS_DISK, 237 .of_match = bd82x6x_ahci_ids, 238 .probe = bd82x6x_sata_probe, 239 }; 240