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* x86: ivybridge: Allow microcode to be collatedSimon Glass2016-08-30-1/+11
| | | | | | | | | | | Generally the microcode is combined into a single block only (and removed from the device tree) when there are multiple blocks. But this is not a requirement. Adjust the ivybridge code to avoid assuming this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Add debugging when a microcode update failsSimon Glass2016-08-30-1/+3
| | | | | | | | Add a debug() at this point to help figure out what is wrong. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher<hs@denx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Add theadorable-x86-dfi-bt700 board supportStefan Roese2016-08-16-0/+22
| | | | | | | | | | | | | | This patch adds support for the BayTrail based theadorable-x86-dfi-bt700 board which uses the DFI BT700 BayTrail Qseven SoM on a custom baseboard. The main difference to the DFI baseboard is, that it isn't equipped with a Super IO chip and uses the internal HS SIO UART (memory mapped PCI based) as the console UART. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: Add DFI BT700 BayTrail board supportStefan Roese2016-08-16-0/+335
| | | | | | | | | | This patch adds support for the DFI BayTrail BT700 QSeven SoM installed on the DFI Q7X-151 baseboard. The baseboard is equipped with the Nuvoton NCT6102D Super IO chip providing the UART as console. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: conga-qeval20-qa3: Add SMBus support and SMSC2513 config codeStefan Roese2016-08-16-7/+11
| | | | | | | | | | | | | | | | This patch includes the following changes: - Remove Designware I2C support from dts as its not used - Configure SMBus PADs in dts - Enable I2C commands and I2C support - Configure SMSC2513 USB hub via SMBus upon startup - Move environment location to match Minnowmax example - Enhancement of the default environment Signed-off-by: Stefan Roese <sr@denx.de> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* i2c: intel_i2c: SMBus driver PCI addition (e.g. BayTrail)Stefan Roese2016-08-16-26/+0
| | | | | | | | | | | | | | | | | | | | | This patch adds support for the SMBus block read/write functionality. Other protocols like the SMBus quick command need to get added if this is needed. This patch also removed the SMBus related defines from the Ivybridge pch.h header. As they are integrated in this driver and should be used from here. This change is added in this patch to avoid compile breakage to keep the source git bisectable. Tested on a congatec BayTrail board to configure the SMSC2513 USB hub. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: George McCollister <george.mccollister@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: som-db5800-som-6867: fix SERIRQ on resetGeorge McCollister2016-08-16-0/+6
| | | | | | | | | | | | | | | Explicitly enable ILB_SERIRQ function 1 in cfio_regs_pad_ilb_serirq_PCONF0. Pad configuration for SERIRQ is not set to enable the SERIRQ function after a reset though strangely, it is on initial boot. Rebooting from Linux, reset command in u-boot and even pushing the reset button on the development board all lead to the SERIRQ function being disabled (address 0xfed0c560 with value of 0x2003cc80). Signed-off-by: George McCollister <george.mccollister@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: baytrail: Add SIO HS-UART clock setupStefan Roese2016-08-16-0/+48
| | | | | | | | | | To support the BayTrail internal SIO HS UART, the internal UART clock needs to get configured. This patch adds support for this clock configuration which will be done, if the PCI device(s) are found. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: cache.h: Add default for CONFIG_SYS_CACHELINE_SIZEStefan Roese2016-08-16-4/+4
| | | | | | | | | | Don't just define ARCH_DMA_MINALIGN but also CONFIG_SYS_CACHELINE_SIZE if it's undefined. This is needed for the xhci driver to compile. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* dm: Use dm_scan_fdt_dev() directly where possibleSimon Glass2016-07-27-12/+1
| | | | | | | Quite a few places have a bind() method which just calls dm_scan_fdt_dev(). We may as well call dm_scan_fdt_dev() directly. Update the code to do this. Signed-off-by: Simon Glass <sjg@chromium.org>
* dm: Convert users from dm_scan_fdt_node() to dm_scan_fdt_dev()Simon Glass2016-07-27-3/+1
| | | | | | | This new function is more convenient for callers, and handles pre-relocation situations automatically. Signed-off-by: Simon Glass <sjg@chromium.org>
* Merge branch 'master' of git://git.denx.de/u-boot-x86Tom Rini2016-07-12-13/+474
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| * x86: link: Correct a failure in DRAM initSimon Glass2016-07-12-0/+5
| | | | | | | | | | | | | | | | | | | | With the change to set up pinctrl after relocation, link fails to boot. Add a special case in the link code to handle this. Fixes: d8906c1f (x86: Probe pinctrl driver in cpu_init_r()) Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add Advantech SOM-DB5800/SOM-6867 supportGeorge McCollister2016-07-12-1/+295
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for Advantech SOM-DB5800 with the SOM-6867 installed. This is very similar to conga-qeval20-qa3-e3845 in that there is a reference carrier board (SOM-DB5800) with a Baytrail based SoM (SOM-6867) installed. Currently supported: - 2x UART (From ITE EC on SOM-6867) routed to COM3/4 connectors on SOM-DB5800. - 4x USB 2.0 (EHCI) - Video - SATA - Ethernet - PCIe - Realtek ALC892 HD Audio Pad configuration for HDA_RSTB, HDA_SYNC, HDA_CLK, HDA_SDO HDA_SDI0 is set in DT to enable HD Audio codec. Pin defaults for codec pin complexs are not changed. Not supported: - Winbond Super I/O (Must be disabled with jumpers on SOM-DB8500) - USB 3.0 (XHCI) - TPM Signed-off-by: George McCollister <george.mccollister@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: baytrail: acpi: Hide internal UART per GNVS settingBin Meng2016-07-12-11/+8
| | | | | | | | | | | | | | | | | | | | If global NVS says internal UART is not enabled, hide it in the ASL code so that OS won't see it. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: George McCollister <george.mccollister@gmail.com> Tested-by: George McCollister <george.mccollister@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
| * x86: acpi: Pack global NVS into ACPI tableBin Meng2016-07-12-0/+32
| | | | | | | | | | | | | | | | | | | | Now that platform-specific ACPI global NVS is added, pack it into ACPI table and get its address fixed up. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: George McCollister <george.mccollister@gmail.com> Tested-by: George McCollister <george.mccollister@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
| * x86: quark: Introduce ACPI global NVSBin Meng2016-07-12-0/+41
| | | | | | | | | | | | | | | | This introduces quark-specific ACPI global NVS structure, defined in both C header file and ASL file. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
| * x86: baytrail: Introduce ACPI global NVSBin Meng2016-07-12-0/+81
| | | | | | | | | | | | | | | | | | | | This introduces baytrail-specific ACPI global NVS structure, defined in both C header file and ASL file. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: George McCollister <george.mccollister@gmail.com> Tested-by: George McCollister <george.mccollister@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
| * x86: fsp: Wrap setup_internal_uart() call with CONFIG_INTERNAL_UARTBin Meng2016-07-12-1/+1
| | | | | | | | | | | | | | | | | | | | For any FSP-enabled boards that want to enable debug UART support, setup_internal_uart() will be called, but this API is only available on BayTrail platform. Change to wrap it with CONFIG_INTERNAL_UART. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
| * x86: baytrail: Introduce a Kconfig option for the internal UARTBin Meng2016-07-12-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | There are quite a number of BayTrail boards that uses an external SuperIO chipset to provide the legacy UART. For such cases, it's better to have a Kconfig option to enable the internal UART. So far BayleyBay and MinnowMax boards are using internal UART as the U-Boot console, enable this on these two boards. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* | x86: fdt: Drop the unused compatible strings in fdtdecSimon Glass2016-07-11-6/+0
|/ | | | | | | | We have drivers for several more devices now, so drop the strings which are no-longer used. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: coreboot: Remove the dummy pch driverBin Meng2016-06-29-27/+0
| | | | | | | | | There is a dummy pch driver in the coreboot directory. This causes drivers of its children fail to function due to empty ops. Remove the whole file since it is no longer needed. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Probe pinctrl driver in cpu_init_r()Bin Meng2016-06-12-0/+5
| | | | | | | | | | | | | | | | | | | | | | At present pinctrl driver gets probed in ich6_gpio driver's probe routine, which has two issues: - Pin's PADs only gets configured when GPIO driver is probed, which is not done by default. This leaves the board in a partially functional state as we must initialize PADs correctly to get perepherals fully working. - The probe routine of pinctrl driver is called multiple times, as normally there are multiple GPIO controllers. It should really be called just once. Move the call to syscon_get_by_driver_data() from ich6_gpio driver to cpu_init_r(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: George McCollister <george.mccollister@gmail.com> Tested-by: George McCollister <george.mccollister@gmail.com>
* x86: baytrail: Configure card detect pin of the SD controllerBin Meng2016-06-12-0/+45
| | | | | | | | | | | | | | | | | | | | | As of today, the latest version FSP (gold4) for BayTrail misses the PAD configuration of the SD controller's Card Detect signal. The default PAD value for the CD pin sets the pin to work in GPIO mode, which causes card detect status cannot be reflected by the Present State register in the SD controller (bit 16 & bit 18 are always zero). Add a configuration for this pin in the pinctrl node. Note I've checked the PAD configuration for all the pins in all the 3 controllers (eMMC/SDIO/SD). Only this SDMMC3_CD_B pin does not get initialized to correct mode by FSP. With fsp,emmc-boot-mode set to 2 (eMMC 4.1), eMMC pins are initialized to func 1, but if we set fsp,emmc-boot-mode to 1 (auto), those pins are initialized to func 3 which is correct according to datasheet. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: baytrail: Change fsp, emmc-boot-mode to "auto"Bin Meng2016-06-12-3/+3
| | | | | | | | | | | | | | | | | | At present all BayTrail boards configure fsp,emmc-boot-mode to 2, which means "eMMC 4.1" per FSP documentation. However, eMMC 4.1 only shows up on some early stepping silicon of BayTrail SoC. Newer stepping SoC integrates an eMMC 4.5 controller. Intel FSP provides a config option fsp,emmc-boot-mode which tells FSP which eMMC controller it initializes. Instead of hardcoded to 2, now we change it to 1 which means "auto". With this change, MinnowMax board (with a D0 stepping BayTrail SoC) can see the eMMC 4.5 controller at PCI address 00.17.00 via U-Boot 'pci' command. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: baytrail: Add 'reg' property in the pinctrl nodeBin Meng2016-06-12-0/+7
| | | | | | | | | | | | Without a 'reg' property, pinctrl driver probe routine fails in its pre_probe() with a return value of -EINVAL. Add 'reg' property for all BayTrail boards. Note for BayleyBay, the pinctrl node is newly added. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: acpi: Fix madt lapic generationGeorge McCollister2016-06-12-6/+6
| | | | | | | | | | An accumulated length was incorrectly added to current each pass through the loop. On system with more than 2 cores this caused a corrupt MADT to be generated. Signed-off-by: George McCollister <george.mccollister@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* x86: baytrail: acpi: Fix I/O APIC ID in the MADT tableBin Meng2016-05-30-1/+1
| | | | | | | | So far this is hardcoded to 2, but it should really be read from the I/O APIC register. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: quark: Generate ACPI FADT/MADT tablesBin Meng2016-05-30-0/+164
| | | | | | | Generate quark platform-specific FADT/MADT tables. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: quark: Add platform ASL filesBin Meng2016-05-30-0/+433
| | | | | | | | This adds basic quark platform ASL files. They are intended to be included in dsdt.asl of any board that is based on this platform. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: quark: Prepare device.h for inclusion by ASLBin Meng2016-05-30-6/+15
| | | | | | | | | There is a device.h for quark on-chip devices, mainly for definitions of internal PCI device numbers, but it's not ready to be included by ASL files. Update to use hex numbers for PCI dev and __ASSEMBLY__. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: acpi: Make irqroute.asl commonBin Meng2016-05-30-2/+2
| | | | | | | | | | The irqroute.asl file is already common enough to all x86 platforms. Platform ASL files need only provide a irqroute.h to describe how internal PCI devices and PCIe downstream port devices' INTx pins are routed to which PIRQ pin. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: acpi: Create a common irqlinks ASL fileBin Meng2016-05-30-21/+35
| | | | | | | | | | | Move the irqlinks.asl file currently in the BayTrail directory to a common place to be shared among all x86 platforms. As the PIRQ routing control programming interface is common to Intel chipsets, leave the common part in the common file, and move the platform specific part to the platform files. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Switch to use SMBIOS Kconfig options when writing SMBIOS tablesBin Meng2016-05-23-5/+5
| | | | | | | | Make use of the newly added Kconfig options of board manufacturer and product name to write SMBIOS tables. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: kconfig: Add two options for SMBIOS manufacturer and product nameBin Meng2016-05-23-0/+16
| | | | | | | | This introduces two Kconfig options to be used by SMBIOS tables: board manufacturer and product name. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: broadwell: Correct I/O APIC IDBin Meng2016-05-23-1/+2
| | | | | | | | | Currently ID 2 is assgined to broadwell I/O APIC, however per chromebook_samus.dts 2 is the core#2 LAPIC ID. Now we change I/O APIC ID to 4 to avoid conflict. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: quark: Assign a unique I/O APIC IDBin Meng2016-05-23-0/+4
| | | | | | | | | | | | | | | | | | | | | | | After power-on, both LAPIC and I/O APIC appear with the same APIC ID zero, which creates an ID conflict. When generating MP table, U-Boot reports zero as the LAPIC ID in the processor entry, and zero as the I/O APIC ID in the I/O APIC as well as the I/O interrupt assignment entries. Such MP table confuses Linux kernel and finally a kernel panic is seen during boot: BUG: unable to handle kernel paging request at ffff9000 IP: [<c101d462>] native_io_apic_write+0x22/0x30 *pdpt = 00000000014fb001 *pde = 00000000014ff067 *pte = 0000000000000000 Oops: 0002 [#1] Modules linked in: Pid: 1, comm: swapper Tainted: G W 3.8.7 #3 intel galileo/galileo EIP: 0060:[<c101d462>] EFLAGS: 00010086 CPU: 0 EIP is at native_io_apic_write+0x22/0x30 ... Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Call lapic_setup() in interrupt_init()Bin Meng2016-05-23-7/+5
| | | | | | | Let's configure LAPIC in a common place - interrupt_init(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Remove SMP limitation in lapic_setup()Bin Meng2016-05-23-6/+1
| | | | | | | | | At present LAPIC is enabled and configured as virtual wire mode in lapic_setup() only when CONFIG_SMP is on. This limitation is however not necessary as for uniprocessor this is still needed. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Don't touch IA32_APIC_BASE MSR on Intel QuarkBin Meng2016-05-23-12/+16
| | | | | | | | | | | Intel Quark processor core provides an integrated Local APIC but does not support the IA32_APIC_BASE MSR. As a result, the Local APIC is always globally enabled and the Local APIC base address is fixed at 0xfee00000. Attempting to access the IA32_APIC_BASE MSR causes a general protection fault. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: galileo: Enable CPU driverBin Meng2016-05-23-0/+12
| | | | | | | Add a cpu node in the device tree and enable CPU driver. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Use latest microcode for all BayTrail boardsBin Meng2016-05-23-6574/+6
| | | | | | | | | Update board device tree to include latest microcode, and remove the old no longer needed microcode. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de>
* x86: baytrail: Update to latest microcodeBin Meng2016-05-23-0/+6568
| | | | | | | | Update BayTrail microcde to rev 325 (for CPUID 30673), rev 907 (for CPUID 30679). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Add some notes for MRC cache with Intel FSPBin Meng2016-05-23-0/+7
| | | | | | | | | MRC cache relies on Intel FSP to produce a special GUID that contains the MRC cache data. Add such information in the CONFIG_ENABLE_MRC_CACHE help entry. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: baytrail: Add GPIO ASL descriptionBin Meng2016-05-23-0/+98
| | | | | | | | | Since BayTrail, Intel starts to use new GPIO IPs in their chipset. This adds the GPIO ASL, so that OS can load corresponding drivers for it. On Linux, this is BayTrail pinctrl driver. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: baytrail: Add internal UART ASL descriptionBin Meng2016-05-23-0/+64
| | | | | | | | | | | | | | | BayTrail integrates an internal ns15550 compatible UART (PNP0501). Its IRQ is hardwired to IRQ3 in old revision chipset, but in newer revision one IRQ4 is being used for ISA compatibility. Handle this correctly in the ASL file. Linux does not need this ASL, but Windows need this to correctly discover a COM port existing in the system so that Windows can show it in the 'Device Manager' window, and expose this COM port to any terminal emulation application. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: acpi: Remove header length check when writing tablesBin Meng2016-05-23-16/+10
| | | | | | | | | | Before moving 'current' pointer during ACPI table writing, we always check the table length to see if it is larger than the table header. Since our purpose is to generate valid tables, the check logic is always true, which can be avoided. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: acpi: Remove the unnecessary checksum calculation of DSDTBin Meng2016-05-23-6/+0
| | | | | | | | The generated AmlCode[] from IASL already has the calculated DSDT table checksum in place. No need for us to calculate it again. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: acpi: Switch to ACPI mode by ourselves instead of requested by OSPMBin Meng2016-05-23-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Per ACPI spec, during ACPI OS initialization, OSPM can determine that the ACPI hardware registers are owned by SMI (by way of the SCI_EN bit in the PM1_CNT register), in which case the ACPI OS issues the ACPI_ENABLE command to the SMI_CMD port. The SCI_EN bit effectively tracks the ownership of the ACPI hardware registers. However since U-Boot does not support SMI, we report all 3 fields in FADT (SMI_CMD, ACPI_ENABLE, ACPI_DISABLE) as zero, by following the spec who says: these fields are reserved and must be zero on system that does not support System Management mode. U-Boot seems to behave in a correct way that the ACPI spec allows, at least Linux does not complain, but apparently Windows does not think so. During Windows bring up debugging, it is observed that even these 3 fields are zero, Windows are still trying to issue SMI with hardcoded SMI port address and commands, and expecting SCI_EN to be changed by the firmware. Eventually Windows gives us a BSOD (Blue Screen of Death) saying ACPI_BIOS_ERROR and refuses to start. To fix this, turn on the SCI_EN bit by ourselves. With this patch, now U-Boot can install and boot Windows 8.1/10 successfully with the help of SeaBIOS using legacy interface (non-UEFI mode). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* x86: Use high_table_malloc() for tables passing to SeaBIOSBin Meng2016-05-23-3/+1
| | | | | | | | Now that we already reserved high memory for configuration tables, call high_table_malloc() to allocate tables from the region. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
generated by cgit v1.1 at 2024-11-07 18:59:41 +0000