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| author | Simon Rettberg | 2022-05-11 10:41:01 +0200 |
|---|---|---|
| committer | Simon Rettberg | 2022-05-11 10:41:01 +0200 |
| commit | a12e3c379cf2e5946c7316259ef46736cdd5f222 (patch) | |
| tree | 49638dad528a4490e293ea4a0f87e39ce862a75b /src/core/acpi.c | |
| parent | Local UEFI disk boot support (diff) | |
| parent | [cloud] Allow aws-import script to run on Python 3.6 (diff) | |
| download | ipxe-a12e3c379cf2e5946c7316259ef46736cdd5f222.tar.gz ipxe-a12e3c379cf2e5946c7316259ef46736cdd5f222.tar.xz ipxe-a12e3c379cf2e5946c7316259ef46736cdd5f222.zip | |
Merge branch 'master' into openslx
Diffstat (limited to 'src/core/acpi.c')
| -rw-r--r-- | src/core/acpi.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/core/acpi.c b/src/core/acpi.c index aa486da93..526bf8555 100644 --- a/src/core/acpi.c +++ b/src/core/acpi.c @@ -38,6 +38,12 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); /** Colour for debug messages */ #define colour FADT_SIGNATURE +/** ACPI table finder + * + * May be overridden at link time to inject tables for testing. + */ +typeof ( acpi_find ) *acpi_finder __attribute__ (( weak )) = acpi_find; + /****************************************************************************** * * Utility functions @@ -83,6 +89,18 @@ void acpi_fix_checksum ( struct acpi_header *acpi ) { } /** + * Locate ACPI table + * + * @v signature Requested table signature + * @v index Requested index of table with this signature + * @ret table Table, or UNULL if not found + */ +userptr_t acpi_table ( uint32_t signature, unsigned int index ) { + + return ( *acpi_finder ) ( signature, index ); +} + +/** * Locate ACPI table via RSDT * * @v signature Requested table signature @@ -230,7 +248,7 @@ int acpi_extract ( uint32_t signature, void *data, int rc; /* Try DSDT first */ - fadt = acpi_find ( FADT_SIGNATURE, 0 ); + fadt = acpi_table ( FADT_SIGNATURE, 0 ); if ( fadt ) { copy_from_user ( &fadtab, fadt, 0, sizeof ( fadtab ) ); dsdt = phys_to_user ( fadtab.dsdt ); @@ -241,7 +259,7 @@ int acpi_extract ( uint32_t signature, void *data, /* Try all SSDTs */ for ( i = 0 ; ; i++ ) { - ssdt = acpi_find ( SSDT_SIGNATURE, i ); + ssdt = acpi_table ( SSDT_SIGNATURE, i ); if ( ! ssdt ) break; if ( ( rc = acpi_zsdt ( ssdt, signature, data, |