[U-Boot] [PATCH v2 20/30] x86: ivybridge: Add SATA init
Simon Glass
sjg at chromium.org
Sat Nov 15 02:18:38 CET 2014
Add code to set up the SATA interfaces on boot.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
Changes in v2:
- Move common SATA init to a function to reduce duplication
- Use pci_write_bar32() to write to BARs
arch/x86/cpu/ivybridge/Makefile | 1 +
arch/x86/cpu/ivybridge/bd82x6x.c | 20 +++
arch/x86/cpu/ivybridge/sata.c | 225 ++++++++++++++++++++++++++
arch/x86/include/asm/arch-ivybridge/bd82x6x.h | 2 +
arch/x86/include/asm/arch-ivybridge/pch.h | 58 +++++++
doc/device-tree-bindings/ata/intel-sata.txt | 26 +++
include/fdtdec.h | 1 +
lib/fdtdec.c | 1 +
8 files changed, 334 insertions(+)
create mode 100644 arch/x86/cpu/ivybridge/sata.c
create mode 100644 doc/device-tree-bindings/ata/intel-sata.txt
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);
+}
diff --git a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h
index e02520c..644755f 100644
--- a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h
+++ b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h
@@ -7,6 +7,8 @@
#ifndef _ASM_ARCH_BD82X6X_H
#define _ASM_ARCH_BD82X6X_H
+void bd82x6x_sata_init(pci_dev_t dev, const void *blob, int node);
+void bd82x6x_sata_enable(pci_dev_t dev, const void *blob, int node);
void bd82x6x_pci_init(pci_dev_t dev);
int bd82x6x_init_pci_devices(void);
int bd82x6x_init(void);
diff --git a/arch/x86/include/asm/arch-ivybridge/pch.h b/arch/x86/include/asm/arch-ivybridge/pch.h
index b3ec7c5..21df083 100644
--- a/arch/x86/include/asm/arch-ivybridge/pch.h
+++ b/arch/x86/include/asm/arch-ivybridge/pch.h
@@ -122,6 +122,64 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
#define LPC_GEN4_DEC 0x90 /* LPC IF Generic Decode Range 4 */
#define LPC_GENX_DEC(x) (0x84 + 4 * (x))
+/* PCI Configuration Space (D31:F1): IDE */
+#define PCH_IDE_DEV PCI_BDF(0, 0x1f, 1)
+#define PCH_SATA_DEV PCI_BDF(0, 0x1f, 2)
+#define PCH_SATA2_DEV PCI_BDF(0, 0x1f, 5)
+
+#define INTR_LN 0x3c
+#define IDE_TIM_PRI 0x40 /* IDE timings, primary */
+#define IDE_DECODE_ENABLE (1 << 15)
+#define IDE_SITRE (1 << 14)
+#define IDE_ISP_5_CLOCKS (0 << 12)
+#define IDE_ISP_4_CLOCKS (1 << 12)
+#define IDE_ISP_3_CLOCKS (2 << 12)
+#define IDE_RCT_4_CLOCKS (0 << 8)
+#define IDE_RCT_3_CLOCKS (1 << 8)
+#define IDE_RCT_2_CLOCKS (2 << 8)
+#define IDE_RCT_1_CLOCKS (3 << 8)
+#define IDE_DTE1 (1 << 7)
+#define IDE_PPE1 (1 << 6)
+#define IDE_IE1 (1 << 5)
+#define IDE_TIME1 (1 << 4)
+#define IDE_DTE0 (1 << 3)
+#define IDE_PPE0 (1 << 2)
+#define IDE_IE0 (1 << 1)
+#define IDE_TIME0 (1 << 0)
+#define IDE_TIM_SEC 0x42 /* IDE timings, secondary */
+
+#define IDE_SDMA_CNT 0x48 /* Synchronous DMA control */
+#define IDE_SSDE1 (1 << 3)
+#define IDE_SSDE0 (1 << 2)
+#define IDE_PSDE1 (1 << 1)
+#define IDE_PSDE0 (1 << 0)
+
+#define IDE_SDMA_TIM 0x4a
+
+#define IDE_CONFIG 0x54 /* IDE I/O Configuration Register */
+#define SIG_MODE_SEC_NORMAL (0 << 18)
+#define SIG_MODE_SEC_TRISTATE (1 << 18)
+#define SIG_MODE_SEC_DRIVELOW (2 << 18)
+#define SIG_MODE_PRI_NORMAL (0 << 16)
+#define SIG_MODE_PRI_TRISTATE (1 << 16)
+#define SIG_MODE_PRI_DRIVELOW (2 << 16)
+#define FAST_SCB1 (1 << 15)
+#define FAST_SCB0 (1 << 14)
+#define FAST_PCB1 (1 << 13)
+#define FAST_PCB0 (1 << 12)
+#define SCB1 (1 << 3)
+#define SCB0 (1 << 2)
+#define PCB1 (1 << 1)
+#define PCB0 (1 << 0)
+
+#define SATA_SIRI 0xa0 /* SATA Indexed Register Index */
+#define SATA_SIRD 0xa4 /* SATA Indexed Register Data */
+#define SATA_SP 0xd0 /* Scratchpad */
+
+/* SATA IOBP Registers */
+#define SATA_IOBP_SP0G3IR 0xea000151
+#define SATA_IOBP_SP1G3IR 0xea000051
+
/* PCI Configuration Space (D31:F3): SMBus */
#define PCH_SMBUS_DEV PCI_BDF(0, 0x1f, 3)
#define SMB_BASE 0x20
diff --git a/doc/device-tree-bindings/ata/intel-sata.txt b/doc/device-tree-bindings/ata/intel-sata.txt
new file mode 100644
index 0000000..5e4da83
--- /dev/null
+++ b/doc/device-tree-bindings/ata/intel-sata.txt
@@ -0,0 +1,26 @@
+Intel Pantherpoint SATA Device Binding
+======================================
+
+The device tree node which describes the operation of the Intel Pantherpoint
+SATA device is as follows:
+
+Required properties :
+- compatible = "intel,pantherpoint-ahci"
+- intel,sata-mode : string, one of:
+ "ahci" : Use AHCI mode (default)
+ "combined" : Use combined IDE + legacy mode
+ "plain-ide" : Use plain IDE mode
+- intel,sata-port-map : Which SATA ports are enabled, bit 0=enable first port,
+ bit 1=enable second port, etc.
+- intel,sata-port0-gen3-tx : Value for the IOBP_SP0G3IR register
+- intel,sata-port1-gen3-tx : Value for the IOBP_SP1G3IR register
+
+Example
+-------
+
+sata {
+ compatible = "intel,pantherpoint-ahci";
+ intel,sata-mode = "ahci";
+ intel,sata-port-map = <1>;
+ intel,sata-port0-gen3-tx = <0x00880a7f>;
+};
diff --git a/include/fdtdec.h b/include/fdtdec.h
index abfd678..0a0afce 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -120,6 +120,7 @@ enum fdt_compat_id {
COMPAT_INTEL_LPC, /* Intel Low Pin Count I/F */
COMPAT_INTEL_MICROCODE, /* Intel microcode update */
COMPAT_MEMORY_SPD, /* Memory SPD information */
+ COMPAT_INTEL_PANTHERPOINT_AHCI, /* Intel Pantherpoint AHCI */
COMPAT_COUNT,
};
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index aafc4f9..8865a26 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -75,6 +75,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
COMPAT(COMPAT_INTEL_LPC, "intel,lpc"),
COMPAT(INTEL_MICROCODE, "intel,microcode"),
COMPAT(MEMORY_SPD, "memory-spd"),
+ COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"),
};
const char *fdtdec_get_compatible(enum fdt_compat_id id)
--
2.1.0.rc2.206.gedb03e5
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