Commit 94bccc34 authored by Thomas Tai's avatar Thomas Tai Committed by Konrad Rzeszutek Wilk

iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND

iscsi_ibft can use ACPI to find the iBFT entry during bootup,
currently, ISCSI_IBFT depends on ISCSI_IBFT_FIND which is
a X86 legacy way to find the iBFT by searching through the
low memory. This patch changes the dependency so that other
arch like ARM64 can use ISCSI_IBFT as long as the arch supports
ACPI.

ibft_init() needs to use the global variable ibft_addr declared
in iscsi_ibft_find.c. A #ifndef CONFIG_ISCSI_IBFT_FIND is needed
to declare the variable if CONFIG_ISCSI_IBFT_FIND is not selected.
Moving ibft_addr into the iscsi_ibft.c does not work because if
ISCSI_IBFT is selected as a module, the arch/x86/kernel/setup.c won't
be able to find the variable at compile time.
Signed-off-by: default avatarThomas Tai <thomas.tai@oracle.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent 8bd04c57
...@@ -170,7 +170,7 @@ config DMI_SCAN_MACHINE_NON_EFI_FALLBACK ...@@ -170,7 +170,7 @@ config DMI_SCAN_MACHINE_NON_EFI_FALLBACK
config ISCSI_IBFT_FIND config ISCSI_IBFT_FIND
bool "iSCSI Boot Firmware Table Attributes" bool "iSCSI Boot Firmware Table Attributes"
depends on X86 && ACPI depends on X86 && ISCSI_IBFT
default n default n
help help
This option enables the kernel to find the region of memory This option enables the kernel to find the region of memory
...@@ -181,7 +181,8 @@ config ISCSI_IBFT_FIND ...@@ -181,7 +181,8 @@ config ISCSI_IBFT_FIND
config ISCSI_IBFT config ISCSI_IBFT
tristate "iSCSI Boot Firmware Table Attributes module" tristate "iSCSI Boot Firmware Table Attributes module"
select ISCSI_BOOT_SYSFS select ISCSI_BOOT_SYSFS
depends on ISCSI_IBFT_FIND && SCSI && SCSI_LOWLEVEL select ISCSI_IBFT_FIND if X86
depends on ACPI && SCSI && SCSI_LOWLEVEL
default n default n
help help
This option enables support for detection and exposing of iSCSI This option enables support for detection and exposing of iSCSI
......
...@@ -93,6 +93,10 @@ MODULE_DESCRIPTION("sysfs interface to BIOS iBFT information"); ...@@ -93,6 +93,10 @@ MODULE_DESCRIPTION("sysfs interface to BIOS iBFT information");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
MODULE_VERSION(IBFT_ISCSI_VERSION); MODULE_VERSION(IBFT_ISCSI_VERSION);
#ifndef CONFIG_ISCSI_IBFT_FIND
struct acpi_table_ibft *ibft_addr;
#endif
struct ibft_hdr { struct ibft_hdr {
u8 id; u8 id;
u8 version; u8 version;
......
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