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author | animeshbm | 2024-03-14 13:20:59 +0100 |
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committer | GitHub | 2024-03-14 13:20:59 +0100 |
commit | 211ac5f933e97b3accf935dd6dc92e58cc23dbb6 (patch) | |
tree | f385c42cc60bdb621bef3c4fe059f7562af0f57b /src/arch/x86/interface/pcbios/bios_smbios.c | |
parent | support for aqc113 (diff) | |
parent | [efi] Update to current EDK2 headers (diff) | |
download | ipxe-211ac5f933e97b3accf935dd6dc92e58cc23dbb6.tar.gz ipxe-211ac5f933e97b3accf935dd6dc92e58cc23dbb6.tar.xz ipxe-211ac5f933e97b3accf935dd6dc92e58cc23dbb6.zip |
Merge branch 'ipxe:master' into aqc1xx
Diffstat (limited to 'src/arch/x86/interface/pcbios/bios_smbios.c')
-rw-r--r-- | src/arch/x86/interface/pcbios/bios_smbios.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/src/arch/x86/interface/pcbios/bios_smbios.c b/src/arch/x86/interface/pcbios/bios_smbios.c index a8c0fc32..366679d3 100644 --- a/src/arch/x86/interface/pcbios/bios_smbios.c +++ b/src/arch/x86/interface/pcbios/bios_smbios.c @@ -44,11 +44,11 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); * @v smbios SMBIOS entry point descriptor structure to fill in * @ret rc Return status code */ -static int bios_find_smbios ( struct smbios *smbios ) { +static int bios_find_smbios2 ( struct smbios *smbios ) { struct smbios_entry entry; int rc; - /* Scan through BIOS segment to find SMBIOS entry point */ + /* Scan through BIOS segment to find SMBIOS 32-bit entry point */ if ( ( rc = find_smbios_entry ( real_to_user ( BIOS_SEG, 0 ), 0x10000, &entry ) ) != 0 ) return rc; @@ -62,4 +62,55 @@ static int bios_find_smbios ( struct smbios *smbios ) { return 0; } +/** + * Find SMBIOS + * + * @v smbios SMBIOS entry point descriptor structure to fill in + * @ret rc Return status code + */ +static int bios_find_smbios3 ( struct smbios *smbios ) { + struct smbios3_entry entry; + int rc; + + /* Scan through BIOS segment to find SMBIOS 64-bit entry point */ + if ( ( rc = find_smbios3_entry ( real_to_user ( BIOS_SEG, 0 ), 0x10000, + &entry ) ) != 0 ) + return rc; + + /* Check that address is accessible */ + if ( entry.smbios_address > ~( ( physaddr_t ) 0 ) ) { + DBG ( "SMBIOS3 at %08llx is inaccessible\n", + ( ( unsigned long long ) entry.smbios_address ) ); + return -ENOTSUP; + } + + /* Fill in entry point descriptor structure */ + smbios->address = phys_to_user ( entry.smbios_address ); + smbios->len = entry.smbios_len; + smbios->count = 0; + smbios->version = SMBIOS_VERSION ( entry.major, entry.minor ); + + return 0; +} + +/** + * Find SMBIOS + * + * @v smbios SMBIOS entry point descriptor structure to fill in + * @ret rc Return status code + */ +static int bios_find_smbios ( struct smbios *smbios ) { + int rc; + + /* Use 32-bit table if present */ + if ( ( rc = bios_find_smbios2 ( smbios ) ) == 0 ) + return 0; + + /* Otherwise, use 64-bit table if present and accessible */ + if ( ( rc = bios_find_smbios3 ( smbios ) ) == 0 ) + return 0; + + return rc; +} + PROVIDE_SMBIOS ( pcbios, find_smbios, bios_find_smbios ); |