X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Fx86%2Fcpu%2Fivybridge%2Fcpu.c;h=099cb94e5d280969afdbae977f1250724e81d6ce;hb=7e13f1d08fa85af97d11d9d13d506efdabd3db4d;hp=e9253100f6e051987ad6995e49836a5c0e0d3b68;hpb=306df2c8241bd363c71a99841630fb5e85d81fae;p=u-boot diff --git a/arch/x86/cpu/ivybridge/cpu.c b/arch/x86/cpu/ivybridge/cpu.c index e9253100f6..099cb94e5d 100644 --- a/arch/x86/cpu/ivybridge/cpu.c +++ b/arch/x86/cpu/ivybridge/cpu.c @@ -12,144 +12,69 @@ */ #include +#include #include #include +#include #include +#include +#include #include #include +#include +#include #include #include #include #include #include #include -#include #include #include DECLARE_GLOBAL_DATA_PTR; -static void enable_port80_on_lpc(struct pci_controller *hose, pci_dev_t dev) -{ - /* Enable port 80 POST on LPC */ - pci_hose_write_config_dword(hose, dev, PCH_RCBA_BASE, DEFAULT_RCBA | 1); - clrbits_le32(RCB_REG(GCS), 4); -} - -/* - * Enable Prefetching and Caching. - */ -static void enable_spi_prefetch(struct pci_controller *hose, pci_dev_t dev) -{ - u8 reg8; - - pci_hose_read_config_byte(hose, dev, 0xdc, ®8); - reg8 &= ~(3 << 2); - reg8 |= (2 << 2); /* Prefetching and Caching Enabled */ - pci_hose_write_config_byte(hose, dev, 0xdc, reg8); -} - static int set_flex_ratio_to_tdp_nominal(void) { - msr_t flex_ratio, msr; - u8 nominal_ratio; - /* Minimum CPU revision for configurable TDP support */ if (cpuid_eax(1) < IVB_CONFIG_TDP_MIN_CPUID) return -EINVAL; - /* Check for Flex Ratio support */ - flex_ratio = msr_read(MSR_FLEX_RATIO); - if (!(flex_ratio.lo & FLEX_RATIO_EN)) - return -EINVAL; - - /* Check for >0 configurable TDPs */ - msr = msr_read(MSR_PLATFORM_INFO); - if (((msr.hi >> 1) & 3) == 0) - return -EINVAL; - - /* Use nominal TDP ratio for flex ratio */ - msr = msr_read(MSR_CONFIG_TDP_NOMINAL); - nominal_ratio = msr.lo & 0xff; - - /* See if flex ratio is already set to nominal TDP ratio */ - if (((flex_ratio.lo >> 8) & 0xff) == nominal_ratio) - return 0; - - /* Set flex ratio to nominal TDP ratio */ - flex_ratio.lo &= ~0xff00; - flex_ratio.lo |= nominal_ratio << 8; - flex_ratio.lo |= FLEX_RATIO_LOCK; - msr_write(MSR_FLEX_RATIO, flex_ratio); - - /* Set flex ratio in soft reset data register bits 11:6 */ - clrsetbits_le32(RCB_REG(SOFT_RESET_DATA), 0x3f << 6, - (nominal_ratio & 0x3f) << 6); - - /* Set soft reset control to use register value */ - setbits_le32(RCB_REG(SOFT_RESET_CTRL), 1); - - /* Issue warm reset, will be "CPU only" due to soft reset data */ - outb(0x0, PORT_RESET); - outb(0x6, PORT_RESET); - cpu_hlt(); - - /* Not reached */ - return -EINVAL; + return cpu_set_flex_ratio_to_tdp_nominal(); } -static void set_spi_speed(void) +int arch_cpu_init(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; + post_code(POST_CPU_INIT); - /* Set Software Sequence frequency to match */ - clrsetbits_8(RCB_REG(SPI_FREQ_SWSEQ), 7, fdod); + return x86_cpu_init_f(); } -int arch_cpu_init(void) +int arch_cpu_init_dm(void) { - const void *blob = gd->fdt_blob; struct pci_controller *hose; - int node; + struct udevice *bus, *dev; int ret; - post_code(POST_CPU_INIT); - timer_set_base(rdtsc()); - - ret = x86_cpu_init_f(); + post_code(0x70); + ret = uclass_get_device(UCLASS_PCI, 0, &bus); + post_code(0x71); if (ret) return ret; + post_code(0x72); + hose = dev_get_uclass_priv(bus); - ret = pci_early_init_hose(&hose); - if (ret) - return ret; + /* TODO(sjg@chromium.org): Get rid of gd->hose */ + gd->hose = hose; - node = fdtdec_next_compatible(blob, 0, COMPAT_INTEL_LPC); - if (node < 0) - return -ENOENT; - ret = lpc_early_init(gd->fdt_blob, node, PCH_LPC_DEV); + ret = uclass_first_device_err(UCLASS_LPC, &dev); if (ret) return ret; - enable_spi_prefetch(hose, PCH_LPC_DEV); - - /* This is already done in start.S, but let's do it in C */ - enable_port80_on_lpc(hose, PCH_LPC_DEV); - - set_spi_speed(); - /* * We should do as little as possible before the serial console is * up. Perhaps this should move to later. Our next lot of init - * happens in print_cpuinfo() when we have a console + * happens in checkcpu() when we have a console */ ret = set_flex_ratio_to_tdp_nominal(); if (ret) @@ -158,41 +83,6 @@ int arch_cpu_init(void) return 0; } -static int enable_smbus(void) -{ - pci_dev_t dev; - uint16_t value; - - /* Set the SMBus device statically. */ - dev = PCI_BDF(0x0, 0x1f, 0x3); - - /* Check to make sure we've got the right device. */ - value = pci_read_config16(dev, 0x0); - if (value != 0x8086) { - printf("SMBus controller not found\n"); - return -ENOSYS; - } - - /* Set SMBus I/O base. */ - pci_write_config32(dev, SMB_BASE, - SMBUS_IO_BASE | PCI_BASE_ADDRESS_SPACE_IO); - - /* Set SMBus enable. */ - pci_write_config8(dev, HOSTC, HST_EN); - - /* Set SMBus I/O space enable. */ - pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_IO); - - /* Disable interrupt generation. */ - outb(0, SMBUS_IO_BASE + SMBHSTCTL); - - /* Clear any lingering errors, so transactions can run. */ - outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT); - debug("SMBus controller enabled\n"); - - return 0; -} - #define PCH_EHCI0_TEMP_BAR0 0xe8000000 #define PCH_EHCI1_TEMP_BAR0 0xe8000400 #define PCH_XHCI_TEMP_BAR0 0xe8001000 @@ -206,69 +96,43 @@ static int enable_smbus(void) * * This is used to speed up the resume path. */ -static void enable_usb_bar(void) +static void enable_usb_bar(struct udevice *bus) { pci_dev_t usb0 = PCH_EHCI1_DEV; pci_dev_t usb1 = PCH_EHCI2_DEV; pci_dev_t usb3 = PCH_XHCI_DEV; - u32 cmd; + ulong cmd; /* USB Controller 1 */ - pci_write_config32(usb0, PCI_BASE_ADDRESS_0, - PCH_EHCI0_TEMP_BAR0); - cmd = pci_read_config32(usb0, PCI_COMMAND); + pci_bus_write_config(bus, usb0, PCI_BASE_ADDRESS_0, + PCH_EHCI0_TEMP_BAR0, PCI_SIZE_32); + pci_bus_read_config(bus, usb0, PCI_COMMAND, &cmd, PCI_SIZE_32); cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - pci_write_config32(usb0, PCI_COMMAND, cmd); + pci_bus_write_config(bus, usb0, PCI_COMMAND, cmd, PCI_SIZE_32); - /* USB Controller 1 */ - pci_write_config32(usb1, PCI_BASE_ADDRESS_0, - PCH_EHCI1_TEMP_BAR0); - cmd = pci_read_config32(usb1, PCI_COMMAND); + /* USB Controller 2 */ + pci_bus_write_config(bus, usb1, PCI_BASE_ADDRESS_0, + PCH_EHCI1_TEMP_BAR0, PCI_SIZE_32); + pci_bus_read_config(bus, usb1, PCI_COMMAND, &cmd, PCI_SIZE_32); cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - pci_write_config32(usb1, PCI_COMMAND, cmd); + pci_bus_write_config(bus, usb1, PCI_COMMAND, cmd, PCI_SIZE_32); - /* USB3 Controller */ - pci_write_config32(usb3, PCI_BASE_ADDRESS_0, - PCH_XHCI_TEMP_BAR0); - cmd = pci_read_config32(usb3, PCI_COMMAND); + /* USB3 Controller 1 */ + pci_bus_write_config(bus, usb3, PCI_BASE_ADDRESS_0, + PCH_XHCI_TEMP_BAR0, PCI_SIZE_32); + pci_bus_read_config(bus, usb3, PCI_COMMAND, &cmd, PCI_SIZE_32); cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - pci_write_config32(usb3, PCI_COMMAND, cmd); -} - -static int report_bist_failure(void) -{ - if (gd->arch.bist != 0) { - post_code(POST_BIST_FAILURE); - printf("BIST failed: %08x\n", gd->arch.bist); - return -EFAULT; - } - - return 0; + pci_bus_write_config(bus, usb3, PCI_COMMAND, cmd, PCI_SIZE_32); } -int print_cpuinfo(void) +int checkcpu(void) { enum pei_boot_mode_t boot_mode = PEI_BOOT_NONE; - char processor_name[CPU_MAX_NAME_LEN]; - const char *name; + struct udevice *dev, *lpc; uint32_t pm1_cnt; uint16_t pm1_sts; int ret; - /* Halt if there was a built in self test failure */ - ret = report_bist_failure(); - if (ret) - return ret; - - enable_lapic(); - - ret = microcode_update_intel(); - if (ret) - return ret; - - /* Enable upper 128bytes of CMOS */ - writel(1 << 2, RCB_REG(RC)); - /* TODO: cmos_post_init() */ if (readl(MCHBAR_REG(SSKPD)) == 0xCAFE) { debug("soft reset detected\n"); @@ -276,12 +140,14 @@ int print_cpuinfo(void) /* System is not happy after keyboard reset... */ debug("Issuing CF9 warm reset\n"); - outb(0x6, 0xcf9); - cpu_hlt(); + reset_cpu(0); } - /* Early chipset init required before RAM init can work */ - sandybridge_early_init(SANDYBRIDGE_MOBILE); + ret = cpu_common_init(); + if (ret) { + debug("%s: cpu_common_init() failed\n", __func__); + return ret; + } /* Check PM1_STS[15] to see if we are waking from Sx */ pm1_sts = inw(DEFAULT_PMBASE + PM1_STS); @@ -290,16 +156,7 @@ int print_cpuinfo(void) pm1_cnt = inl(DEFAULT_PMBASE + PM1_CNT); if ((pm1_sts & WAK_STS) && ((pm1_cnt >> 10) & 7) == 5) { -#if CONFIG_HAVE_ACPI_RESUME - debug("Resume from S3 detected.\n"); - boot_mode = PEI_BOOT_RESUME; - /* Clear SLP_TYPE. This will break stage2 but - * we care for that when we get there. - */ - outl(pm1_cnt & ~(7 << 10), DEFAULT_PMBASE + PM1_CNT); -#else debug("Resume from S3 detected, but disabled.\n"); -#endif } else { /* * TODO: An indication of life might be possible here (e.g. @@ -309,19 +166,27 @@ int print_cpuinfo(void) post_code(POST_EARLY_INIT); /* Enable SPD ROMs and DDR-III DRAM */ - ret = enable_smbus(); - if (ret) + ret = uclass_first_device_err(UCLASS_I2C, &dev); + if (ret) { + debug("%s: Failed to get I2C (ret=%d)\n", __func__, ret); return ret; + } /* Prepare USB controller early in S3 resume */ - if (boot_mode == PEI_BOOT_RESUME) - enable_usb_bar(); + if (boot_mode == PEI_BOOT_RESUME) { + uclass_first_device(UCLASS_LPC, &lpc); + enable_usb_bar(pci_get_controller(lpc->parent)); + } gd->arch.pei_boot_mode = boot_mode; - /* TODO: Move this to the board or driver */ - pci_write_config32(PCH_LPC_DEV, GPIO_BASE, DEFAULT_GPIOBASE | 1); - pci_write_config32(PCH_LPC_DEV, GPIO_CNTL, 0x10); + return 0; +} + +int print_cpuinfo(void) +{ + char processor_name[CPU_MAX_NAME_LEN]; + const char *name; /* Print processor name */ name = cpu_get_name(processor_name); @@ -331,3 +196,10 @@ int print_cpuinfo(void) return 0; } + +void board_debug_uart_init(void) +{ + /* This enables the debug UART */ + pci_x86_write_config(NULL, PCH_LPC_DEV, LPC_EN, COMA_LPC_EN, + PCI_SIZE_16); +}