x86: ivybridge: Add SATA init

Add code to set up the SATA interfaces on boot.

Signed-off-by: Simon Glass <sjg@chromium.org>

3 files changed, 246 insertions, 0 deletions

diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile
index 479e446..c6342cd 100644
--- a/arch/x86/cpu/ivybridge/Makefile
+++ b/arch/x86/cpu/ivybridge/Makefile
@@ -15,4 +15,5 @@ obj-y += microcode_intel.o
 obj-y += pch.o
 obj-y += pci.o
 obj-y += report_platform.o
+obj-y += sata.o
 obj-y += sdram.o
diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c
index be4db74..b54f5c7 100644
--- a/arch/x86/cpu/ivybridge/bd82x6x.c
+++ b/arch/x86/cpu/ivybridge/bd82x6x.c
@@ -88,18 +88,38 @@ void bd82x6x_pci_bus_enable_resources(pci_dev_t dev)
 
 int bd82x6x_init_pci_devices(void)
 {
+	const void *blob = gd->fdt_blob;
 	struct pci_controller *hose;
+	int sata_node;
 
 	hose = pci_bus_to_hose(0);
 	lpc_enable(PCH_LPC_DEV);
 	lpc_init(hose, PCH_LPC_DEV);
+	sata_node = fdtdec_next_compatible(blob, 0,
+					   COMPAT_INTEL_PANTHERPOINT_AHCI);
+	if (sata_node < 0) {
+		debug("%s: Cannot find SATA node\n", __func__);
+		return -EINVAL;
+	}
+	bd82x6x_sata_init(PCH_SATA_DEV, blob, sata_node);
 
 	return 0;
 }
 
 int bd82x6x_init(void)
 {
+	const void *blob = gd->fdt_blob;
+	int sata_node;
+
+	sata_node = fdtdec_next_compatible(blob, 0,
+					   COMPAT_INTEL_PANTHERPOINT_AHCI);
+	if (sata_node < 0) {
+		debug("%s: Cannot find SATA node\n", __func__);
+		return -EINVAL;
+	}
+
 	bd82x6x_pci_init(PCH_DEV);
+	bd82x6x_sata_enable(PCH_SATA_DEV, blob, sata_node);
 
 	return 0;
 }
diff --git a/arch/x86/cpu/ivybridge/sata.c b/arch/x86/cpu/ivybridge/sata.c
new file mode 100644
index 0000000..bbcd47d
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/sata.c
@@ -0,0 +1,225 @@
+/*
+ * From Coreboot
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <asm/io.h>
+#include <asm/pci.h>
+#include <asm/arch/pch.h>
+#include <asm/arch/bd82x6x.h>
+
+static inline u32 sir_read(pci_dev_t dev, int idx)
+{
+	pci_write_config32(dev, SATA_SIRI, idx);
+	return pci_read_config32(dev, SATA_SIRD);
+}
+
+static inline void sir_write(pci_dev_t dev, int idx, u32 value)
+{
+	pci_write_config32(dev, SATA_SIRI, idx);
+	pci_write_config32(dev, SATA_SIRD, value);
+}
+
+static void common_sata_init(pci_dev_t 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;
+	pci_write_config32(dev, IDE_CONFIG, reg32);
+
+	/* Port enable */
+	reg16 = pci_read_config16(dev, 0x92);
+	reg16 &= ~0x3f;
+	reg16 |= port_map;
+	pci_write_config16(dev, 0x92, reg16);
+
+	/* SATA Initialization register */
+	port_map &= 0xff;
+	pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) | 0x183);
+}
+
+void bd82x6x_sata_init(pci_dev_t dev, const void *blob, int node)
+{
+	unsigned int port_map, speed_support, port_tx;
+	struct pci_controller *hose = pci_bus_to_hose(0);
+	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);
+
+	/* Enable BARs */
+	pci_write_config16(dev, PCI_COMMAND, 0x0007);
+
+	mode = fdt_getprop(blob, node, "intel,sata-mode", NULL);
+	if (!mode || !strcmp(mode, "ahci")) {
+		u32 abar;
+
+		debug("SATA: Controller in AHCI mode\n");
+
+		/* Set Interrupt Line, Interrupt Pin is set by D31IP.PIP */
+		pci_write_config8(dev, INTR_LN, 0x0a);
+
+		/* Set timings */
+		pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
+				IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
+				IDE_PPE0 | IDE_IE0 | IDE_TIME0);
+		pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
+				IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
+
+		/* Sync DMA */
+		pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0);
+		pci_write_config16(dev, IDE_SDMA_TIM, 0x0001);
+
+		common_sata_init(dev, 0x8000 | port_map);
+
+		/* Initialize AHCI memory-mapped space */
+		abar = pci_read_bar32(hose, 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 */
+		pci_write_bar32(hose, dev, 5, 0x00000000);
+		/* And without AHCI BAR no memory decoding */
+		reg16 = pci_read_config16(dev, PCI_COMMAND);
+		reg16 &= ~PCI_COMMAND_MEMORY;
+		pci_write_config16(dev, PCI_COMMAND, reg16);
+
+		pci_write_config8(dev, 0x09, 0x80);
+
+		/* Set timings */
+		pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
+				IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
+		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 */
+		pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0);
+		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 */
+		pci_write_bar32(hose, dev, 5, 0x00000000);
+
+		/* And without AHCI BAR no memory decoding */
+		reg16 = pci_read_config16(dev, PCI_COMMAND);
+		reg16 &= ~PCI_COMMAND_MEMORY;
+		pci_write_config16(dev, PCI_COMMAND, reg16);
+
+		/*
+		 * Native mode capable on both primary and secondary (0xa)
+		 * OR'ed with enabled (0x50) = 0xf
+		 */
+		pci_write_config8(dev, 0x09, 0x8f);
+
+		/* Set Interrupt Line */
+		/* Interrupt Pin is set by D31IP.PIP */
+		pci_write_config8(dev, INTR_LN, 0xff);
+
+		/* Set timings */
+		pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
+				IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
+				IDE_PPE0 | IDE_IE0 | IDE_TIME0);
+		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 */
+		pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 | IDE_PSDE0);
+		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(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(SATA_IOBP_SP1G3IR, 0, port_tx);
+
+	/* Additional Programming Requirements */
+	sir_write(dev, 0x04, 0x00001600);
+	sir_write(dev, 0x28, 0xa0000033);
+	reg32 = sir_read(dev, 0x54);
+	reg32 &= 0xff000000;
+	reg32 |= 0x5555aa;
+	sir_write(dev, 0x54, reg32);
+	sir_write(dev, 0x64, 0xcccc8484);
+	reg32 = sir_read(dev, 0x68);
+	reg32 &= 0xffff0000;
+	reg32 |= 0xcccc;
+	sir_write(dev, 0x68, reg32);
+	reg32 = sir_read(dev, 0x78);
+	reg32 &= 0x0000ffff;
+	reg32 |= 0x88880000;
+	sir_write(dev, 0x78, reg32);
+	sir_write(dev, 0x84, 0x001c7000);
+	sir_write(dev, 0x88, 0x88338822);
+	sir_write(dev, 0xa0, 0x001c7000);
+	sir_write(dev, 0xc4, 0x0c0c0c0c);
+	sir_write(dev, 0xc8, 0x0c0c0c0c);
+	sir_write(dev, 0xd4, 0x10000000);
+
+	pch_iobp_update(0xea004001, 0x3fffffff, 0xc0000000);
+	pch_iobp_update(0xea00408a, 0xfffffcff, 0x00000100);
+}
+
+void bd82x6x_sata_enable(pci_dev_t dev, const void *blob, int node)
+{
+	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;
+	pci_write_config16(dev, 0x90, map);
+}