+// SPDX-License-Identifier: GPL-2.0
/*
* From coreboot southbridge/intel/bd82x6x/lpc.c
*
* Copyright (C) 2008-2009 coresystems GmbH
- *
- * SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <fdtdec.h>
+#include <log.h>
#include <rtc.h>
#include <pci.h>
-#include <asm/acpi.h>
+#include <asm/intel_regs.h>
#include <asm/interrupt.h>
#include <asm/io.h>
#include <asm/ioapic.h>
+#include <asm/lpc_common.h>
#include <asm/pci.h>
#include <asm/arch/pch.h>
+DECLARE_GLOBAL_DATA_PTR;
+
#define NMI_OFF 0
#define ENABLE_ACPI_MODE_IN_COREBOOT 0
#define TEST_SMM_FLASH_LOCKDOWN 0
-static int pch_enable_apic(pci_dev_t dev)
+static int pch_enable_apic(struct udevice *pch)
{
u32 reg32;
int i;
/* Enable ACPI I/O and power management. Set SCI IRQ to IRQ9 */
- x86_pci_write_config8(dev, ACPI_CNTL, 0x80);
+ dm_pci_write_config8(pch, ACPI_CNTL, 0x80);
writel(0, IO_APIC_INDEX);
writel(1 << 25, IO_APIC_DATA);
return 0;
}
-static void pch_enable_serial_irqs(pci_dev_t dev)
+static void pch_enable_serial_irqs(struct udevice *pch)
{
u32 value;
/* Set packet length and toggle silent mode bit for one frame. */
value = (1 << 7) | (1 << 6) | ((21 - 17) << 2) | (0 << 0);
#ifdef CONFIG_SERIRQ_CONTINUOUS_MODE
- x86_pci_write_config8(dev, SERIRQ_CNTL, value);
+ dm_pci_write_config8(pch, SERIRQ_CNTL, value);
#else
- x86_pci_write_config8(dev, SERIRQ_CNTL, value | (1 << 6));
+ dm_pci_write_config8(pch, SERIRQ_CNTL, value | (1 << 6));
#endif
}
-static int pch_pirq_init(const void *blob, int node, pci_dev_t dev)
+static int pch_pirq_init(struct udevice *pch)
{
uint8_t route[8], *ptr;
- if (fdtdec_get_byte_array(blob, node, "intel,pirq-routing", route,
- sizeof(route)))
+ if (fdtdec_get_byte_array(gd->fdt_blob, dev_of_offset(pch),
+ "intel,pirq-routing", route, sizeof(route)))
return -EINVAL;
ptr = route;
- x86_pci_write_config8(dev, PIRQA_ROUT, *ptr++);
- x86_pci_write_config8(dev, PIRQB_ROUT, *ptr++);
- x86_pci_write_config8(dev, PIRQC_ROUT, *ptr++);
- x86_pci_write_config8(dev, PIRQD_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQA_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQB_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQC_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQD_ROUT, *ptr++);
- x86_pci_write_config8(dev, PIRQE_ROUT, *ptr++);
- x86_pci_write_config8(dev, PIRQF_ROUT, *ptr++);
- x86_pci_write_config8(dev, PIRQG_ROUT, *ptr++);
- x86_pci_write_config8(dev, PIRQH_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQE_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQF_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQG_ROUT, *ptr++);
+ dm_pci_write_config8(pch, PIRQH_ROUT, *ptr++);
/*
* TODO(sjg@chromium.org): U-Boot does not set up the interrupts
return 0;
}
-static int pch_gpi_routing(const void *blob, int node, pci_dev_t dev)
+static int pch_gpi_routing(struct udevice *pch)
{
u8 route[16];
u32 reg;
int gpi;
- if (fdtdec_get_byte_array(blob, node, "intel,gpi-routing", route,
- sizeof(route)))
+ if (fdtdec_get_byte_array(gd->fdt_blob, dev_of_offset(pch),
+ "intel,gpi-routing", route, sizeof(route)))
return -EINVAL;
for (reg = 0, gpi = 0; gpi < ARRAY_SIZE(route); gpi++)
reg |= route[gpi] << (gpi * 2);
- x86_pci_write_config32(dev, 0xb8, reg);
+ dm_pci_write_config32(pch, 0xb8, reg);
return 0;
}
-static int pch_power_options(const void *blob, int node, pci_dev_t dev)
+static int pch_power_options(struct udevice *pch)
{
+ const void *blob = gd->fdt_blob;
+ int node = dev_of_offset(pch);
u8 reg8;
u16 reg16, pmbase;
u32 reg32;
*/
pwr_on = MAINBOARD_POWER_ON;
- reg16 = x86_pci_read_config16(dev, GEN_PMCON_3);
+ dm_pci_read_config16(pch, GEN_PMCON_3, ®16);
reg16 &= 0xfffe;
switch (pwr_on) {
case MAINBOARD_POWER_OFF:
reg16 |= (1 << 12); /* Disable SLP stretch after SUS well */
- x86_pci_write_config16(dev, GEN_PMCON_3, reg16);
+ dm_pci_write_config16(pch, GEN_PMCON_3, reg16);
debug("Set power %s after power failure.\n", state);
/* Set up NMI on errors. */
outb(reg8, 0x70);
/* Enable CPU_SLP# and Intel Speedstep, set SMI# rate down */
- reg16 = x86_pci_read_config16(dev, GEN_PMCON_1);
+ dm_pci_read_config16(pch, GEN_PMCON_1, ®16);
reg16 &= ~(3 << 0); /* SMI# rate 1 minute */
reg16 &= ~(1 << 10); /* Disable BIOS_PCI_EXP_EN for native PME */
#if DEBUG_PERIODIC_SMIS
/* Set DEBUG_PERIODIC_SMIS in pch.h to debug using periodic SMIs */
reg16 |= (3 << 0); /* Periodic SMI every 8s */
#endif
- x86_pci_write_config16(dev, GEN_PMCON_1, reg16);
+ dm_pci_write_config16(pch, GEN_PMCON_1, reg16);
/* Set the board's GPI routing. */
- ret = pch_gpi_routing(blob, node, dev);
+ ret = pch_gpi_routing(pch);
if (ret)
return ret;
- pmbase = x86_pci_read_config16(dev, 0x40) & 0xfffe;
+ dm_pci_read_config16(pch, 0x40, &pmbase);
+ pmbase &= 0xfffe;
- writel(pmbase + GPE0_EN, fdtdec_get_int(blob, node,
- "intel,gpe0-enable", 0));
- writew(pmbase + ALT_GP_SMI_EN, fdtdec_get_int(blob, node,
- "intel,alt-gp-smi-enable", 0));
+ writel(fdtdec_get_int(blob, node, "intel,gpe0-enable", 0),
+ (ulong)pmbase + GPE0_EN);
+ writew(fdtdec_get_int(blob, node, "intel,alt-gp-smi-enable", 0),
+ (ulong)pmbase + ALT_GP_SMI_EN);
/* Set up power management block and determine sleep mode */
reg32 = inl(pmbase + 0x04); /* PM1_CNT */
return 0;
}
-static void pch_rtc_init(pci_dev_t dev)
+static void pch_rtc_init(struct udevice *pch)
{
int rtc_failed;
u8 reg8;
- reg8 = x86_pci_read_config8(dev, GEN_PMCON_3);
+ dm_pci_read_config8(pch, GEN_PMCON_3, ®8);
rtc_failed = reg8 & RTC_BATTERY_DEAD;
if (rtc_failed) {
reg8 &= ~RTC_BATTERY_DEAD;
- x86_pci_write_config8(dev, GEN_PMCON_3, reg8);
+ dm_pci_write_config8(pch, GEN_PMCON_3, reg8);
}
debug("rtc_failed = 0x%x\n", rtc_failed);
}
/* CougarPoint PCH Power Management init */
-static void cpt_pm_init(pci_dev_t dev)
+static void cpt_pm_init(struct udevice *pch)
{
debug("CougarPoint PM init\n");
- x86_pci_write_config8(dev, 0xa9, 0x47);
+ dm_pci_write_config8(pch, 0xa9, 0x47);
setbits_le32(RCB_REG(0x2238), (1 << 6) | (1 << 0));
setbits_le32(RCB_REG(0x228c), 1 << 0);
}
/* PantherPoint PCH Power Management init */
-static void ppt_pm_init(pci_dev_t dev)
+static void ppt_pm_init(struct udevice *pch)
{
debug("PantherPoint PM init\n");
- x86_pci_write_config8(dev, 0xa9, 0x47);
+ dm_pci_write_config8(pch, 0xa9, 0x47);
setbits_le32(RCB_REG(0x2238), 1 << 0);
setbits_le32(RCB_REG(0x228c), 1 << 0);
setbits_le16(RCB_REG(0x1100), (1 << 13) | (1 << 14));
clrsetbits_le32(RCB_REG(HPTC), 3 << 0, 1 << 7);
}
-static void enable_clock_gating(pci_dev_t dev)
+static void enable_clock_gating(struct udevice *pch)
{
u32 reg32;
u16 reg16;
setbits_le32(RCB_REG(0x2234), 0xf);
- reg16 = x86_pci_read_config16(dev, GEN_PMCON_1);
+ dm_pci_read_config16(pch, GEN_PMCON_1, ®16);
reg16 |= (1 << 2) | (1 << 11);
- x86_pci_write_config16(dev, GEN_PMCON_1, reg16);
+ dm_pci_write_config16(pch, GEN_PMCON_1, reg16);
- pch_iobp_update(0xEB007F07, ~0UL, (1 << 31));
- pch_iobp_update(0xEB004000, ~0UL, (1 << 7));
- pch_iobp_update(0xEC007F07, ~0UL, (1 << 31));
- pch_iobp_update(0xEC004000, ~0UL, (1 << 7));
+ pch_iobp_update(pch, 0xeb007f07, ~0U, 1 << 31);
+ pch_iobp_update(pch, 0xeb004000, ~0U, 1 << 7);
+ pch_iobp_update(pch, 0xec007f07, ~0U, 1 << 31);
+ pch_iobp_update(pch, 0xec004000, ~0U, 1 << 7);
reg32 = readl(RCB_REG(CG));
reg32 |= (1 << 31);
setbits_le32(RCB_REG(0x3564), 0x3);
}
-#if CONFIG_HAVE_SMI_HANDLER
-static void pch_lock_smm(pci_dev_t dev)
-{
-#if TEST_SMM_FLASH_LOCKDOWN
- u8 reg8;
-#endif
-
- if (acpi_slp_type != 3) {
-#if ENABLE_ACPI_MODE_IN_COREBOOT
- debug("Enabling ACPI via APMC:\n");
- outb(0xe1, 0xb2); /* Enable ACPI mode */
- debug("done.\n");
-#else
- debug("Disabling ACPI via APMC:\n");
- outb(0x1e, 0xb2); /* Disable ACPI mode */
- debug("done.\n");
-#endif
- }
-
- /* Don't allow evil boot loaders, kernels, or
- * userspace applications to deceive us:
- */
- smm_lock();
-
-#if TEST_SMM_FLASH_LOCKDOWN
- /* Now try this: */
- debug("Locking BIOS to RO... ");
- reg8 = x86_pci_read_config8(dev, 0xdc); /* BIOS_CNTL */
- debug(" BLE: %s; BWE: %s\n", (reg8 & 2) ? "on" : "off",
- (reg8 & 1) ? "rw" : "ro");
- reg8 &= ~(1 << 0); /* clear BIOSWE */
- x86_pci_write_config8(dev, 0xdc, reg8);
- reg8 |= (1 << 1); /* set BLE */
- x86_pci_write_config8(dev, 0xdc, reg8);
- debug("ok.\n");
- reg8 = x86_pci_read_config8(dev, 0xdc); /* BIOS_CNTL */
- debug(" BLE: %s; BWE: %s\n", (reg8 & 2) ? "on" : "off",
- (reg8 & 1) ? "rw" : "ro");
-
- debug("Writing:\n");
- writeb(0, 0xfff00000);
- debug("Testing:\n");
- reg8 |= (1 << 0); /* set BIOSWE */
- x86_pci_write_config8(dev, 0xdc, reg8);
-
- reg8 = x86_pci_read_config8(dev, 0xdc); /* BIOS_CNTL */
- debug(" BLE: %s; BWE: %s\n", (reg8 & 2) ? "on" : "off",
- (reg8 & 1) ? "rw" : "ro");
- debug("Done.\n");
-#endif
-}
-#endif
-
-static void pch_disable_smm_only_flashing(pci_dev_t dev)
+static void pch_disable_smm_only_flashing(struct udevice *pch)
{
u8 reg8;
debug("Enabling BIOS updates outside of SMM... ");
- reg8 = x86_pci_read_config8(dev, 0xdc); /* BIOS_CNTL */
+ dm_pci_read_config8(pch, 0xdc, ®8); /* BIOS_CNTL */
reg8 &= ~(1 << 5);
- x86_pci_write_config8(dev, 0xdc, reg8);
+ dm_pci_write_config8(pch, 0xdc, reg8);
}
-static void pch_fixups(pci_dev_t dev)
+static void pch_fixups(struct udevice *pch)
{
u8 gen_pmcon_2;
/* Indicate DRAM init done for MRC S3 to know it can resume */
- gen_pmcon_2 = x86_pci_read_config8(dev, GEN_PMCON_2);
+ dm_pci_read_config8(pch, GEN_PMCON_2, &gen_pmcon_2);
gen_pmcon_2 |= (1 << 7);
- x86_pci_write_config8(dev, GEN_PMCON_2, gen_pmcon_2);
+ dm_pci_write_config8(pch, GEN_PMCON_2, gen_pmcon_2);
/* Enable DMI ASPM in the PCH */
clrbits_le32(RCB_REG(0x2304), 1 << 10);
setbits_le32(RCB_REG(0x21a8), 0x3);
}
-/**
- * lpc_early_init() - set up LPC serial ports and other early things
- *
- * @dev: LPC device
- * @return 0 if OK, -ve on error
- */
-static int lpc_early_init(struct udevice *dev)
+static void set_spi_speed(void)
{
- struct reg_info {
- u32 base;
- u32 size;
- } values[4], *ptr;
- int count;
- int i;
+ u32 fdod;
- count = fdtdec_get_int_array_count(gd->fdt_blob, dev->of_offset,
- "intel,gen-dec", (u32 *)values,
- sizeof(values) / sizeof(u32));
- if (count < 0)
- return -EINVAL;
-
- /* Set COM1/COM2 decode range */
- dm_pci_write_config16(dev->parent, LPC_IO_DEC, 0x0010);
-
- /* Enable PS/2 Keyboard/Mouse, EC areas and COM1 */
- dm_pci_write_config16(dev->parent, LPC_EN, KBC_LPC_EN | MC_LPC_EN |
- GAMEL_LPC_EN | COMA_LPC_EN);
+ /* Observe SPI Descriptor Component Section 0 */
+ writel(0x1000, RCB_REG(SPI_DESC_COMP0));
- /* Write all registers but use 0 if we run out of data */
- count = count * sizeof(u32) / sizeof(values[0]);
- for (i = 0, ptr = values; i < ARRAY_SIZE(values); i++, ptr++) {
- u32 reg = 0;
-
- if (i < count)
- reg = ptr->base | PCI_COMMAND_IO | (ptr->size << 16);
- dm_pci_write_config32(dev->parent, LPC_GENX_DEC(i), reg);
- }
+ /* Extract the1 Write/Erase SPI Frequency from descriptor */
+ fdod = readl(RCB_REG(SPI_FREQ_WR_ERA));
+ fdod >>= 24;
+ fdod &= 7;
- return 0;
+ /* Set Software Sequence frequency to match */
+ clrsetbits_8(RCB_REG(SPI_FREQ_SWSEQ), 7, fdod);
}
-int lpc_init(struct pci_controller *hose, pci_dev_t dev)
+static int lpc_init_extra(struct udevice *dev)
{
- const void *blob = gd->fdt_blob;
- int node;
+ struct udevice *pch = dev->parent;
debug("pch: lpc_init\n");
- pci_write_bar32(hose, dev, 0, 0);
- pci_write_bar32(hose, dev, 1, 0xff800000);
- pci_write_bar32(hose, dev, 2, 0xfec00000);
- pci_write_bar32(hose, dev, 3, 0x800);
- pci_write_bar32(hose, dev, 4, 0x900);
-
- node = fdtdec_next_compatible(blob, 0, COMPAT_INTEL_PCH);
- if (node < 0)
- return -ENOENT;
+ dm_pci_write_bar32(pch, 0, 0);
+ dm_pci_write_bar32(pch, 1, 0xff800000);
+ dm_pci_write_bar32(pch, 2, 0xfec00000);
+ dm_pci_write_bar32(pch, 3, 0x800);
+ dm_pci_write_bar32(pch, 4, 0x900);
/* Set the value for PCI command register. */
- x86_pci_write_config16(dev, PCI_COMMAND, 0x000f);
+ dm_pci_write_config16(pch, PCI_COMMAND, 0x000f);
/* IO APIC initialization. */
- pch_enable_apic(dev);
+ pch_enable_apic(pch);
- pch_enable_serial_irqs(dev);
+ pch_enable_serial_irqs(pch);
/* Setup the PIRQ. */
- pch_pirq_init(blob, node, dev);
+ pch_pirq_init(pch);
/* Setup power options. */
- pch_power_options(blob, node, dev);
+ pch_power_options(pch);
/* Initialize power management */
- switch (pch_silicon_type()) {
+ switch (pch_silicon_type(pch)) {
case PCH_TYPE_CPT: /* CougarPoint */
- cpt_pm_init(dev);
+ cpt_pm_init(pch);
break;
case PCH_TYPE_PPT: /* PantherPoint */
- ppt_pm_init(dev);
+ ppt_pm_init(pch);
break;
default:
- printf("Unknown Chipset: %#02x.%dx\n", PCI_DEV(dev),
- PCI_FUNC(dev));
+ printf("Unknown Chipset: %s\n", pch->name);
return -ENOSYS;
}
/* Initialize the real time clock. */
- pch_rtc_init(dev);
+ pch_rtc_init(pch);
/* Initialize the High Precision Event Timers, if present. */
enable_hpet();
/* Initialize Clock Gating */
- enable_clock_gating(dev);
-
- pch_disable_smm_only_flashing(dev);
+ enable_clock_gating(pch);
-#if CONFIG_HAVE_SMI_HANDLER
- pch_lock_smm(dev);
-#endif
+ pch_disable_smm_only_flashing(pch);
- pch_fixups(dev);
+ pch_fixups(pch);
return 0;
}
-void lpc_enable(pci_dev_t dev)
+static int bd82x6x_lpc_early_init(struct udevice *dev)
{
- /* Enable PCH Display Port */
- writew(0x0010, RCB_REG(DISPBDF));
- setbits_le32(RCB_REG(FD2), PCH_ENABLE_DBDF);
+ set_spi_speed();
+
+ /* Setting up Southbridge. In the northbridge code. */
+ debug("Setting up static southbridge registers\n");
+ dm_pci_write_config32(dev->parent, PCH_RCBA_BASE,
+ RCB_BASE_ADDRESS | 1);
+ dm_pci_write_config32(dev->parent, PMBASE, DEFAULT_PMBASE | 1);
+
+ /* Enable ACPI BAR */
+ dm_pci_write_config8(dev->parent, ACPI_CNTL, 0x80);
+
+ debug("Disabling watchdog reboot\n");
+ setbits_le32(RCB_REG(GCS), 1 >> 5); /* No reset */
+ outw(1 << 11, DEFAULT_PMBASE | 0x60 | 0x08); /* halt timer */
+
+ dm_pci_write_config32(dev->parent, GPIO_BASE, DEFAULT_GPIOBASE | 1);
+ dm_pci_write_config32(dev->parent, GPIO_CNTL, 0x10);
+
+ return 0;
}
static int bd82x6x_lpc_probe(struct udevice *dev)
{
int ret;
- if (gd->flags & GD_FLG_RELOC)
- return 0;
+ if (!(gd->flags & GD_FLG_RELOC)) {
+ ret = lpc_common_early_init(dev);
+ if (ret) {
+ debug("%s: lpc_early_init() failed\n", __func__);
+ return ret;
+ }
- ret = lpc_early_init(dev);
- if (ret) {
- debug("%s: lpc_early_init() failed\n", __func__);
- return ret;
+ return bd82x6x_lpc_early_init(dev);
}
- return 0;
+ return lpc_init_extra(dev);
}
static const struct udevice_id bd82x6x_lpc_ids[] = {
projects / oweals / u-boot.git / blobdiff