mirror of
https://github.com/AsahiLinux/u-boot
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258 lines
7 KiB
C
258 lines
7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* From Coreboot
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* Copyright (C) 2008-2009 coresystems GmbH
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*/
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#include <common.h>
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#include <ahci.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <log.h>
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#include <asm/io.h>
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#include <asm/pch_common.h>
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#include <asm/pci.h>
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#include <asm/arch/pch.h>
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DECLARE_GLOBAL_DATA_PTR;
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static void common_sata_init(struct udevice *dev, unsigned int port_map)
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{
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u32 reg32;
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u16 reg16;
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/* Set IDE I/O Configuration */
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reg32 = SIG_MODE_PRI_NORMAL | FAST_PCB1 | FAST_PCB0 | PCB1 | PCB0;
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dm_pci_write_config32(dev, IDE_CONFIG, reg32);
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/* Port enable */
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dm_pci_read_config16(dev, 0x92, ®16);
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reg16 &= ~0x3f;
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reg16 |= port_map;
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dm_pci_write_config16(dev, 0x92, reg16);
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/* SATA Initialization register */
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port_map &= 0xff;
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dm_pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) | 0x183);
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}
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static void bd82x6x_sata_init(struct udevice *dev, struct udevice *pch)
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{
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unsigned int port_map, speed_support, port_tx;
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const void *blob = gd->fdt_blob;
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int node = dev_of_offset(dev);
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const char *mode;
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u32 reg32;
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u16 reg16;
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debug("SATA: Initializing...\n");
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/* SATA configuration */
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port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0);
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speed_support = fdtdec_get_int(blob, node,
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"sata_interface_speed_support", 0);
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mode = fdt_getprop(blob, node, "intel,sata-mode", NULL);
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if (!mode || !strcmp(mode, "ahci")) {
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ulong abar;
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debug("SATA: Controller in AHCI mode\n");
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/* Set timings */
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dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
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IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
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IDE_PPE0 | IDE_IE0 | IDE_TIME0);
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dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
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IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
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/* Sync DMA */
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dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0);
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dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0001);
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common_sata_init(dev, 0x8000 | port_map);
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/* Initialize AHCI memory-mapped space */
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abar = dm_pci_read_bar32(dev, 5);
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debug("ABAR: %08lx\n", abar);
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/* CAP (HBA Capabilities) : enable power management */
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reg32 = readl(abar + 0x00);
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reg32 |= 0x0c006000; /* set PSC+SSC+SALP+SSS */
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reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */
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/* Set ISS, if available */
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if (speed_support) {
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reg32 &= ~0x00f00000;
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reg32 |= (speed_support & 0x03) << 20;
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}
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writel(reg32, abar + 0x00);
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/* PI (Ports implemented) */
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writel(port_map, abar + 0x0c);
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(void) readl(abar + 0x0c); /* Read back 1 */
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(void) readl(abar + 0x0c); /* Read back 2 */
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/* CAP2 (HBA Capabilities Extended)*/
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reg32 = readl(abar + 0x24);
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reg32 &= ~0x00000002;
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writel(reg32, abar + 0x24);
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/* VSP (Vendor Specific Register */
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reg32 = readl(abar + 0xa0);
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reg32 &= ~0x00000005;
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writel(reg32, abar + 0xa0);
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} else if (!strcmp(mode, "combined")) {
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debug("SATA: Controller in combined mode\n");
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/* No AHCI: clear AHCI base */
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dm_pci_write_bar32(dev, 5, 0x00000000);
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/* And without AHCI BAR no memory decoding */
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dm_pci_read_config16(dev, PCI_COMMAND, ®16);
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reg16 &= ~PCI_COMMAND_MEMORY;
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dm_pci_write_config16(dev, PCI_COMMAND, reg16);
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dm_pci_write_config8(dev, 0x09, 0x80);
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/* Set timings */
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dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
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IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
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dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
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IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
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IDE_PPE0 | IDE_IE0 | IDE_TIME0);
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/* Sync DMA */
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dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0);
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dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0200);
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common_sata_init(dev, port_map);
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} else {
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debug("SATA: Controller in plain-ide mode\n");
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/* No AHCI: clear AHCI base */
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dm_pci_write_bar32(dev, 5, 0x00000000);
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/* And without AHCI BAR no memory decoding */
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dm_pci_read_config16(dev, PCI_COMMAND, ®16);
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reg16 &= ~PCI_COMMAND_MEMORY;
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dm_pci_write_config16(dev, PCI_COMMAND, reg16);
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/*
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* Native mode capable on both primary and secondary (0xa)
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* OR'ed with enabled (0x50) = 0xf
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*/
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dm_pci_write_config8(dev, 0x09, 0x8f);
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/* Set timings */
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dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
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IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
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IDE_PPE0 | IDE_IE0 | IDE_TIME0);
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dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
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IDE_SITRE | IDE_ISP_3_CLOCKS |
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IDE_RCT_1_CLOCKS | IDE_IE0 | IDE_TIME0);
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/* Sync DMA */
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dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 | IDE_PSDE0);
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dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0201);
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common_sata_init(dev, port_map);
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}
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/* Set Gen3 Transmitter settings if needed */
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port_tx = fdtdec_get_int(blob, node, "intel,sata-port0-gen3-tx", 0);
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if (port_tx)
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pch_iobp_update(pch, SATA_IOBP_SP0G3IR, 0, port_tx);
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port_tx = fdtdec_get_int(blob, node, "intel,sata-port1-gen3-tx", 0);
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if (port_tx)
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pch_iobp_update(pch, SATA_IOBP_SP1G3IR, 0, port_tx);
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/* Additional Programming Requirements */
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pch_common_sir_write(dev, 0x04, 0x00001600);
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pch_common_sir_write(dev, 0x28, 0xa0000033);
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reg32 = pch_common_sir_read(dev, 0x54);
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reg32 &= 0xff000000;
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reg32 |= 0x5555aa;
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pch_common_sir_write(dev, 0x54, reg32);
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pch_common_sir_write(dev, 0x64, 0xcccc8484);
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reg32 = pch_common_sir_read(dev, 0x68);
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reg32 &= 0xffff0000;
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reg32 |= 0xcccc;
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pch_common_sir_write(dev, 0x68, reg32);
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reg32 = pch_common_sir_read(dev, 0x78);
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reg32 &= 0x0000ffff;
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reg32 |= 0x88880000;
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pch_common_sir_write(dev, 0x78, reg32);
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pch_common_sir_write(dev, 0x84, 0x001c7000);
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pch_common_sir_write(dev, 0x88, 0x88338822);
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pch_common_sir_write(dev, 0xa0, 0x001c7000);
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pch_common_sir_write(dev, 0xc4, 0x0c0c0c0c);
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pch_common_sir_write(dev, 0xc8, 0x0c0c0c0c);
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pch_common_sir_write(dev, 0xd4, 0x10000000);
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pch_iobp_update(pch, 0xea004001, 0x3fffffff, 0xc0000000);
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pch_iobp_update(pch, 0xea00408a, 0xfffffcff, 0x00000100);
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}
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static void bd82x6x_sata_enable(struct udevice *dev)
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{
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const void *blob = gd->fdt_blob;
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int node = dev_of_offset(dev);
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unsigned port_map;
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const char *mode;
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u16 map = 0;
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/*
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* Set SATA controller mode early so the resource allocator can
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* properly assign IO/Memory resources for the controller.
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*/
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mode = fdt_getprop(blob, node, "intel,sata-mode", NULL);
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if (mode && !strcmp(mode, "ahci"))
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map = 0x0060;
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port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0);
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map |= (port_map ^ 0x3f) << 8;
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dm_pci_write_config16(dev, 0x90, map);
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}
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static int bd82x6x_sata_bind(struct udevice *dev)
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{
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struct udevice *scsi_dev;
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int ret;
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if (gd->flags & GD_FLG_RELOC) {
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ret = ahci_bind_scsi(dev, &scsi_dev);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int bd82x6x_sata_probe(struct udevice *dev)
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{
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struct udevice *pch;
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int ret;
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ret = uclass_first_device_err(UCLASS_PCH, &pch);
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if (ret)
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return ret;
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if (!(gd->flags & GD_FLG_RELOC))
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bd82x6x_sata_enable(dev);
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else {
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bd82x6x_sata_init(dev, pch);
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ret = ahci_probe_scsi_pci(dev);
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if (ret)
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return ret;
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}
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return 0;
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}
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static const struct udevice_id bd82x6x_ahci_ids[] = {
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{ .compatible = "intel,pantherpoint-ahci" },
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{ }
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};
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U_BOOT_DRIVER(ahci_ivybridge_drv) = {
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.name = "ahci_ivybridge",
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.id = UCLASS_AHCI,
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.of_match = bd82x6x_ahci_ids,
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.bind = bd82x6x_sata_bind,
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.probe = bd82x6x_sata_probe,
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};
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