u-boot.git/arch/x86/cpu, branch v2017.07

Revert "x86: Convert MMC to driver model"

2017-06-27T08:31:30Z

This reverts commit ddb3ac3c716f56cead695444e65a7ba7b0946555. With MMC converted to driver model, SCSI driver is broken due to zero address access at (ops->read) in block_dread() function. The fix (SCSI driver converted to DM) is ready in u-boot-dm branch, but it is too late for this relese to get that in. Signed-off-by: Bin Meng Reviewed-by: Simon Glass

x86: baytrail: Fix boot hang with a debug build

2017-06-05T00:55:22Z

It was observed that when -DDEBUG is used to generate a debug build, U-Boot does not boot on MinnowMax board. A workaround is to disable CONFIG_DEBUG_UART. The real issue is that in order to have the debug uart to work, BayTrail SoC needs to be configured so that its internal uart is available to be used as the debug uart. Signed-off-by: Bin Meng Reviewed-by: Stefan Roese Reviewed-by: Simon Glass

x86: baytrail: Change lpe/lpss-sio/scc FSP properties to integer

2017-06-05T00:55:22Z

At present lpe/lpss-sio/scc FSP properties are all boolean, but in fact for "enable-lpe" it has 3 possible options. This adds macros for these options and change the property from a boolean type to an integer type, and change their names to explicitly indicate what the property is really for. Signed-off-by: Bin Meng Reviewed-by: Stefan Roese Reviewed-by: Simon Glass

x86: baytrail: Use macros instead of magic numbers for FSP settings

2017-06-05T00:55:22Z

Introduce various meaningful macros for FSP settings and switch over to use them instead of magic numbers. Signed-off-by: Bin Meng Reviewed-by: Stefan Roese Reviewed-by: Simon Glass

x86: baytrail: Remove "serial-debug-port-*" settings

2017-06-05T00:55:22Z

"serial-debug-port-address" and "serial-debug-port-type" settings are actually reserved in the FSP UPD data structure. Remove them. Signed-off-by: Bin Meng Reviewed-by: Stefan Roese Reviewed-by: Simon Glass

x86: baytrail: Change "fsp, mrc-init-tseg-size" default value to 1

2017-06-05T00:55:22Z

The default value of "fsp,mrc-init-tseg-size" should be 1 (1MB) per FSP default settings. 0 is not valid. Signed-off-by: Bin Meng Reviewed-by: Stefan Roese Reviewed-by: Simon Glass

x86: Convert MMC to driver model

2017-05-17T09:13:06Z

Convert the pci_mmc driver over to driver model and migrate all x86 boards that use it. Signed-off-by: Simon Glass Reviewed-by: Bin Meng Tested-by: Bin Meng

x86: acpi: Fix Windows S3 resume failure

2017-05-17T09:11:46Z

U-Boot sets up the real mode interrupt handler stubs starting from address 0x1000. In most cases, the first 640K (0x00000 - 0x9ffff) system memory is reported as system RAM in E820 table to the OS. (see install_e820_map() implementation for each platform). So OS can use these memories whatever it wants. If U-Boot is in an S3 resume path, care must be taken not to corrupt these memorie otherwise OS data gets lost. Testing shows that, on Microsoft Windows 10 on Intel Baytrail its wake up vector happens to be installed at the same address 0x1000. While on Linux its wake up vector does not overlap this memory range, but after resume kernel checks low memory range per config option CONFIG_X86_RESERVE_LOW which is 64K by default to see whether a memory corruption occurs during the suspend/resume (it's harmless, but warnings are shown in the kernel dmesg logs). We cannot simply mark the these memory as reserved in E820 table because such configuration makes GRUB complain: unable to allocate real mode page. Hence we choose to back up these memories to the place where we reserved on our stack for our S3 resume work. Before jumping to OS wake up vector, we need restore the original content there. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Stefan Roese

x86: acpi: Refactor acpi_resume()

2017-05-17T09:11:46Z

To do something more in acpi_resume() like turning on ACPI mode, we need locate ACPI FADT table pointer first. But currently this is done in acpi_find_wakeup_vector(). This changes acpi_resume() signature to accept ACPI FADT pointer as the parameter. A new API acpi_find_fadt() is introduced, and acpi_find_wakeup_vector() is updated to use FADT pointer as the parameter as well. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Stefan Roese

x86: Adjust board_final_cleanup() order

2017-05-17T09:11:46Z

Call board_final_cleanup() before write_tables(), so that anything done in board_final_cleanup() on a normal boot path is also done on an S3 resume path. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Stefan Roese