diff options
Diffstat (limited to 'drivers/firmware/iscsi_ibft_find.c')
| -rw-r--r-- | drivers/firmware/iscsi_ibft_find.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/drivers/firmware/iscsi_ibft_find.c b/drivers/firmware/iscsi_ibft_find.c index dd85555d3296..82a7a1566290 100644 --- a/drivers/firmware/iscsi_ibft_find.c +++ b/drivers/firmware/iscsi_ibft_find.c @@ -57,23 +57,12 @@ static int __init acpi_find_ibft(struct acpi_table_header *header) } #endif /* CONFIG_ACPI */ -/* - * Routine used to find the iSCSI Boot Format Table. The logical - * kernel address is set in the ibft_addr global variable. - */ -unsigned long __init find_ibft_region(unsigned long *sizep) +static int __init find_ibft_in_mem(void) { unsigned long pos; unsigned int len = 0; void *virt; - ibft_addr = NULL; - - /* iBFT 1.03 section 1.4.3.1 mandates that UEFI machines will - * only use ACPI for this */ - if (efi_enabled) - return 0; - for (pos = IBFT_START; pos < IBFT_END; pos += 16) { /* The table can't be inside the VGA BIOS reserved space, * so skip that area */ @@ -92,6 +81,17 @@ unsigned long __init find_ibft_region(unsigned long *sizep) } } } + return len; +} +/* + * Routine used to find the iSCSI Boot Format Table. The logical + * kernel address is set in the ibft_addr global variable. + */ +unsigned long __init find_ibft_region(unsigned long *sizep) +{ + + ibft_addr = NULL; + #ifdef CONFIG_ACPI /* * One spec says "IBFT", the other says "iBFT". We have to check @@ -102,6 +102,13 @@ unsigned long __init find_ibft_region(unsigned long *sizep) if (!ibft_addr) acpi_table_parse("iBFT", acpi_find_ibft); #endif /* CONFIG_ACPI */ + + /* iBFT 1.03 section 1.4.3.1 mandates that UEFI machines will + * only use ACPI for this */ + + if (!ibft_addr && !efi_enabled) + find_ibft_in_mem(); + if (ibft_addr) { *sizep = PAGE_ALIGN(ibft_addr->header.length); return (u64)isa_virt_to_bus(ibft_addr); |