Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-10-05 22:02:24 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/arch/x86/cpu/ivybridge/sata.c
Simon Glass d46f2a68e6 x86: ivybridge: Do the SATA init before relocation 
The SATA device needs to set itself up so that it appears correctly on the
PCI bus. The easiest way to do this is to set it up to probe before
relocation. This can do the early setup.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-24 12:09:39 +08:00

249 lines
7 KiB
C
Raw Blame History

/*
* From Coreboot
* Copyright (C) 2008-2009 coresystems GmbH
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <asm/io.h>
#include <asm/pci.h>
#include <asm/arch/pch.h>
#include <asm/arch/bd82x6x.h>
DECLARE_GLOBAL_DATA_PTR;
static inline u32 sir_read(pci_dev_t dev, int idx)
{
x86_pci_write_config32(dev, SATA_SIRI, idx);
return x86_pci_read_config32(dev, SATA_SIRD);
}
static inline void sir_write(pci_dev_t dev, int idx, u32 value)
{
x86_pci_write_config32(dev, SATA_SIRI, idx);
x86_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;
x86_pci_write_config32(dev, IDE_CONFIG, reg32);
/* Port enable */
reg16 = x86_pci_read_config16(dev, 0x92);
reg16 &= ~0x3f;
reg16 |= port_map;
x86_pci_write_config16(dev, 0x92, reg16);
/* SATA Initialization register */
port_map &= 0xff;
x86_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 */
x86_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 */
x86_pci_write_config8(dev, INTR_LN, 0x0a);
/* Set timings */
x86_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
IDE_PPE0 | IDE_IE0 | IDE_TIME0);
x86_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
/* Sync DMA */
x86_pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0);
x86_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 = x86_pci_read_config16(dev, PCI_COMMAND);
reg16 &= ~PCI_COMMAND_MEMORY;
x86_pci_write_config16(dev, PCI_COMMAND, reg16);
x86_pci_write_config8(dev, 0x09, 0x80);
/* Set timings */
x86_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
x86_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 */
x86_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0);
x86_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 = x86_pci_read_config16(dev, PCI_COMMAND);
reg16 &= ~PCI_COMMAND_MEMORY;
x86_pci_write_config16(dev, PCI_COMMAND, reg16);
/*
* Native mode capable on both primary and secondary (0xa)
* OR'ed with enabled (0x50) = 0xf
*/
x86_pci_write_config8(dev, 0x09, 0x8f);
/* Set Interrupt Line */
/* Interrupt Pin is set by D31IP.PIP */
x86_pci_write_config8(dev, INTR_LN, 0xff);
/* Set timings */
x86_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
IDE_PPE0 | IDE_IE0 | IDE_TIME0);
x86_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 */
x86_pci_write_config16(dev, IDE_SDMA_CNT,
IDE_SSDE0 | IDE_PSDE0);
x86_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);
}
static 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;
x86_pci_write_config16(dev, 0x90, map);
}
static int bd82x6x_sata_probe(struct udevice *dev)
{
if (!(gd->flags & GD_FLG_RELOC))
bd82x6x_sata_enable(PCH_SATA_DEV, gd->fdt_blob, dev->of_offset);
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_DISK,
.of_match = bd82x6x_ahci_ids,
.probe = bd82x6x_sata_probe,
};
Reference in a new issue View git blame Copy permalink