From 138fe4e069798d9aa948a5402ff15e58f483ee4e Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Date: Wed, 9 Apr 2008 19:50:41 -0700 Subject: Firmware: add iSCSI iBFT Support Add /sysfs/firmware/ibft/[initiator|targetX|ethernetX] directories along with text properties which export the the iSCSI Boot Firmware Table (iBFT) structure. What is iSCSI Boot Firmware Table? It is a mechanism for the iSCSI tools to extract from the machine NICs the iSCSI connection information so that they can automagically mount the iSCSI share/target. Currently the iSCSI information is hard-coded in the initrd. The /sysfs entries are read-only one-name-and-value fields. The usual set of data exposed is: # for a in `find /sys/firmware/ibft/ -type f -print`; do echo -n "$a: "; cat $a; done /sys/firmware/ibft/target0/target-name: iqn.2007.com.intel-sbx44:storage-10gb /sys/firmware/ibft/target0/nic-assoc: 0 /sys/firmware/ibft/target0/chap-type: 0 /sys/firmware/ibft/target0/lun: 00000000 /sys/firmware/ibft/target0/port: 3260 /sys/firmware/ibft/target0/ip-addr: 192.168.79.116 /sys/firmware/ibft/target0/flags: 3 /sys/firmware/ibft/target0/index: 0 /sys/firmware/ibft/ethernet0/mac: 00:11:25:9d:8b:01 /sys/firmware/ibft/ethernet0/vlan: 0 /sys/firmware/ibft/ethernet0/gateway: 192.168.79.254 /sys/firmware/ibft/ethernet0/origin: 0 /sys/firmware/ibft/ethernet0/subnet-mask: 255.255.252.0 /sys/firmware/ibft/ethernet0/ip-addr: 192.168.77.41 /sys/firmware/ibft/ethernet0/flags: 7 /sys/firmware/ibft/ethernet0/index: 0 /sys/firmware/ibft/initiator/initiator-name: iqn.2007-07.com:konrad.initiator /sys/firmware/ibft/initiator/flags: 3 /sys/firmware/ibft/initiator/index: 0 For full details of the IBFT structure please take a look at: ftp://ftp.software.ibm.com/systems/support/system_x_pdf/ibm_iscsi_boot_firmware_table_v1.02.pdf [akpm@linux-foundation.org: fix build] Signed-off-by: Konrad Rzeszutek Cc: Mike Christie Cc: Peter Jones Cc: James Bottomley Cc: Ingo Molnar Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/setup_32.c | 3 +++ arch/x86/kernel/setup_64.c | 4 ++++ 2 files changed, 7 insertions(+) (limited to 'arch') diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index 5b0bffb7fcc..4ef91749959 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include @@ -689,6 +690,8 @@ void __init setup_bootmem_allocator(void) #endif numa_kva_reserve(); reserve_crashkernel(); + + reserve_ibft_region(); } /* diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 674ef3510cd..216c93bd999 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -434,6 +435,9 @@ void __init setup_arch(char **cmdline_p) } #endif reserve_crashkernel(); + + reserve_ibft_region(); + paging_init(); map_vsyscall(); -- cgit v1.2.3