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Diffstat (limited to 'arch/x86/cpu/ivybridge/lpc.c')
-rw-r--r--arch/x86/cpu/ivybridge/lpc.c295
1 files changed, 161 insertions, 134 deletions
diff --git a/arch/x86/cpu/ivybridge/lpc.c b/arch/x86/cpu/ivybridge/lpc.c
index af5d4a8908..9ab5ed3ff9 100644
--- a/arch/x86/cpu/ivybridge/lpc.c
+++ b/arch/x86/cpu/ivybridge/lpc.c
@@ -24,13 +24,13 @@
#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);
@@ -66,36 +66,36 @@ static int pch_enable_apic(pci_dev_t dev)
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, pch->of_offset,
+ "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
@@ -104,26 +104,28 @@ static int pch_pirq_init(const void *blob, int node, pci_dev_t dev)
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, pch->of_offset,
+ "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 = pch->of_offset;
u8 reg8;
u16 reg16, pmbase;
u32 reg32;
@@ -142,7 +144,7 @@ static int pch_power_options(const void *blob, int node, pci_dev_t dev)
*/
pwr_on = MAINBOARD_POWER_ON;
- reg16 = x86_pci_read_config16(dev, GEN_PMCON_3);
+ dm_pci_read_config16(pch, GEN_PMCON_3, &reg16);
reg16 &= 0xfffe;
switch (pwr_on) {
case MAINBOARD_POWER_OFF:
@@ -169,7 +171,7 @@ static int pch_power_options(const void *blob, int node, pci_dev_t dev)
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. */
@@ -193,21 +195,22 @@ static int pch_power_options(const void *blob, int node, pci_dev_t dev)
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, &reg16);
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));
@@ -227,16 +230,16 @@ static int pch_power_options(const void *blob, int node, pci_dev_t dev)
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, &reg8);
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);
@@ -246,10 +249,10 @@ static void pch_rtc_init(pci_dev_t dev)
}
/* 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);
@@ -290,10 +293,10 @@ static void cpt_pm_init(pci_dev_t dev)
}
/* 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));
@@ -340,21 +343,21 @@ static void enable_hpet(void)
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, &reg16);
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, ~0UL, (1 << 31));
+ pch_iobp_update(pch, 0xEB004000, ~0UL, (1 << 7));
+ pch_iobp_update(pch, 0xEC007F07, ~0UL, (1 << 31));
+ pch_iobp_update(pch, 0xEC004000, ~0UL, (1 << 7));
reg32 = readl(RCB_REG(CG));
reg32 |= (1 << 31);
@@ -376,77 +379,24 @@ static void enable_clock_gating(pci_dev_t dev)
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, &reg8); /* 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);
@@ -454,7 +404,49 @@ static void pch_fixups(pci_dev_t dev)
setbits_le32(RCB_REG(0x21a8), 0x3);
}
-int lpc_early_init(const void *blob, int node, pci_dev_t dev)
+/*
+ * Enable Prefetching and Caching.
+ */
+static void enable_spi_prefetch(struct udevice *pch)
+{
+ u8 reg8;
+
+ dm_pci_read_config8(pch, 0xdc, &reg8);
+ reg8 &= ~(3 << 2);
+ reg8 |= (2 << 2); /* Prefetching and Caching Enabled */
+ dm_pci_write_config8(pch, 0xdc, reg8);
+}
+
+static void enable_port80_on_lpc(struct udevice *pch)
+{
+ /* Enable port 80 POST on LPC */
+ dm_pci_write_config32(pch, PCH_RCBA_BASE, DEFAULT_RCBA | 1);
+ clrbits_le32(RCB_REG(GCS), 4);
+}
+
+static void set_spi_speed(void)
+{
+ u32 fdod;
+
+ /* Observe SPI Descriptor Component Section 0 */
+ writel(0x1000, RCB_REG(SPI_DESC_COMP0));
+
+ /* Extract the1 Write/Erase SPI Frequency from descriptor */
+ fdod = readl(RCB_REG(SPI_FREQ_WR_ERA));
+ fdod >>= 24;
+ fdod &= 7;
+
+ /* Set Software Sequence frequency to match */
+ clrsetbits_8(RCB_REG(SPI_FREQ_SWSEQ), 7, fdod);
+}
+
+/**
+ * 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)
{
struct reg_info {
u32 base;
@@ -463,17 +455,18 @@ int lpc_early_init(const void *blob, int node, pci_dev_t dev)
int count;
int i;
- count = fdtdec_get_int_array_count(blob, node, "intel,gen-dec",
- (u32 *)values, sizeof(values) / sizeof(u32));
+ 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 */
- x86_pci_write_config16(dev, LPC_IO_DEC, 0x0010);
+ dm_pci_write_config16(dev->parent, LPC_IO_DEC, 0x0010);
/* Enable PS/2 Keyboard/Mouse, EC areas and COM1 */
- x86_pci_write_config16(dev, LPC_EN, KBC_LPC_EN | MC_LPC_EN |
- GAMEL_LPC_EN | COMA_LPC_EN);
+ dm_pci_write_config16(dev->parent, LPC_EN, KBC_LPC_EN | MC_LPC_EN |
+ GAMEL_LPC_EN | COMA_LPC_EN);
/* Write all registers but use 0 if we run out of data */
count = count * sizeof(u32) / sizeof(values[0]);
@@ -482,81 +475,114 @@ int lpc_early_init(const void *blob, int node, pci_dev_t dev)
if (i < count)
reg = ptr->base | PCI_COMMAND_IO | (ptr->size << 16);
- x86_pci_write_config32(dev, LPC_GENX_DEC(i), reg);
+ dm_pci_write_config32(dev->parent, LPC_GENX_DEC(i), reg);
}
+ enable_spi_prefetch(dev->parent);
+
+ /* This is already done in start.S, but let's do it in C */
+ enable_port80_on_lpc(dev->parent);
+
+ set_spi_speed();
+
return 0;
}
-int lpc_init(struct pci_controller *hose, pci_dev_t dev)
+static int lpc_init_extra(struct udevice *dev)
{
+ struct udevice *pch = dev->parent;
const void *blob = gd->fdt_blob;
int node;
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);
+ 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);
node = fdtdec_next_compatible(blob, 0, COMPAT_INTEL_PCH);
if (node < 0)
return -ENOENT;
/* 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);
+ enable_clock_gating(pch);
- pch_disable_smm_only_flashing(dev);
+ pch_disable_smm_only_flashing(pch);
-#if CONFIG_HAVE_SMI_HANDLER
- pch_lock_smm(dev);
-#endif
+ pch_fixups(pch);
- pch_fixups(dev);
+ return 0;
+}
+
+static int bd82x6x_lpc_early_init(struct udevice *dev)
+{
+ /* Setting up Southbridge. In the northbridge code. */
+ debug("Setting up static southbridge registers\n");
+ dm_pci_write_config32(dev->parent, PCH_RCBA_BASE, DEFAULT_RCBA | 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;
}
-void lpc_enable(pci_dev_t dev)
+static int bd82x6x_lpc_probe(struct udevice *dev)
{
- /* Enable PCH Display Port */
- writew(0x0010, RCB_REG(DISPBDF));
- setbits_le32(RCB_REG(FD2), PCH_ENABLE_DBDF);
+ int ret;
+
+ if (!(gd->flags & GD_FLG_RELOC)) {
+ ret = lpc_early_init(dev);
+ if (ret) {
+ debug("%s: lpc_early_init() failed\n", __func__);
+ return ret;
+ }
+
+ return bd82x6x_lpc_early_init(dev);
+ }
+
+ return lpc_init_extra(dev);
}
static const struct udevice_id bd82x6x_lpc_ids[] = {
@@ -568,4 +594,5 @@ U_BOOT_DRIVER(bd82x6x_lpc_drv) = {
.name = "lpc",
.id = UCLASS_LPC,
.of_match = bd82x6x_lpc_ids,
+ .probe = bd82x6x_lpc_probe,
};
generated by cgit (git 2.34.1) at 2024-12-28 01:22:17 +0000