u-boot.git/arch/x86/lib, branch v2016.09

dm: Use dm_scan_fdt_dev() directly where possible

2016-07-27T20:15:54+00:00

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

dm: Convert users from dm_scan_fdt_node() to dm_scan_fdt_dev()

2016-07-27T20:15:07+00:00

This new function is more convenient for callers, and handles pre-relocation
situations automatically.

Signed-off-by: Simon Glass

x86: acpi: Pack global NVS into ACPI table

2016-07-12T05:46:01+00:00

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 
Reviewed-by: George McCollister 
Tested-by: George McCollister 
Reviewed-by: Simon Glass

x86: fsp: Wrap setup_internal_uart() call with CONFIG_INTERNAL_UART

2016-07-12T05:46:01+00:00

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 
Reviewed-by: Stefan Roese 
Reviewed-by: Simon Glass

x86: acpi: Fix madt lapic generation

2016-06-12T04:19:35+00:00

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 
Reviewed-by: Simon Glass 
Reviewed-by: Bin Meng

x86: Switch to use SMBIOS Kconfig options when writing SMBIOS tables

2016-05-23T07:27:42+00:00

Make use of the newly added Kconfig options of board manufacturer
and product name to write SMBIOS tables.

Signed-off-by: Bin Meng 
Reviewed-by: Simon Glass

x86: acpi: Remove header length check when writing tables

2016-05-23T07:18:00+00:00

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 
Reviewed-by: Simon Glass

x86: acpi: Remove the unnecessary checksum calculation of DSDT

2016-05-23T07:18:00+00:00

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 
Reviewed-by: Simon Glass

x86: acpi: Switch to ACPI mode by ourselves instead of requested by OSPM

2016-05-23T07:18:00+00:00

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 
Reviewed-by: Simon Glass

x86: Use high_table_malloc() for tables passing to SeaBIOS

2016-05-23T07:18:00+00:00

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 
Reviewed-by: Simon Glass