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| author | Michael Brown | 2017-05-23 16:44:22 +0200 |
|---|---|---|
| committer | Michael Brown | 2017-05-23 19:48:06 +0200 |
| commit | 356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d (patch) | |
| tree | bcfdf9da0e520ac48f6fd3b5ddb37f804fde97d9 /src/include | |
| parent | [efi] Provide access to ACPI tables (diff) | |
| download | ipxe-356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d.tar.gz ipxe-356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d.tar.xz ipxe-356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d.zip | |
[acpi] Expose ACPI tables via settings mechanism
Allow values to be read from ACPI tables using the syntax
${acpi/<signature>.<index>.0.<offset>.<length>}
where <signature> is the ACPI table signature as a 32-bit hexadecimal
number (e.g. 0x41504093 for the 'APIC' signature on the MADT), <index>
is the index into the array of tables matching this signature,
<offset> is the byte offset within the table, and <length> is the
field length in bytes.
Numeric values are returned in reverse byte order, since ACPI numeric
values are usually little-endian.
For example:
${acpi/0x41504943.0.0.0.0} - entire MADT table in raw hex
${acpi/0x41504943.0.0.0x0a.6:string} - MADT table OEM ID
${acpi/0x41504943.0.0.0x24.4:uint32} - local APIC address
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/ipxe/errfile.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/ipxe/errfile.h b/src/include/ipxe/errfile.h index cd12ebf3..faa1e77f 100644 --- a/src/include/ipxe/errfile.h +++ b/src/include/ipxe/errfile.h @@ -366,6 +366,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #define ERRFILE_efi_local ( ERRFILE_OTHER | 0x004d0000 ) #define ERRFILE_efi_entropy ( ERRFILE_OTHER | 0x004e0000 ) #define ERRFILE_cert_cmd ( ERRFILE_OTHER | 0x004f0000 ) +#define ERRFILE_acpi_settings ( ERRFILE_OTHER | 0x00500000 ) /** @} */ |