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authorHuang, Ying <ying.huang@intel.com>2008-03-28 10:49:44 +0800
committerIngo Molnar <mingo@elte.hu>2008-04-26 21:34:42 +0200
commit8b664aa66e824a0ddf4ec56d41fa0cf7bb374de6 (patch)
tree57c5de72c38f630e126964b922c379c4a7e49100 /arch/x86/boot/header.S
parent50eae2a7c9862afe263a2003c12f457ecfc9e6a2 (diff)
downloadop-kernel-dev-8b664aa66e824a0ddf4ec56d41fa0cf7bb374de6.zip
op-kernel-dev-8b664aa66e824a0ddf4ec56d41fa0cf7bb374de6.tar.gz
x86, boot: add linked list of struct setup_data
This patch adds a field of 64-bit physical pointer to NULL terminated single linked list of struct setup_data to real-mode kernel header. This is used as a more extensible boot parameters passing mechanism. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/boot/header.S')
-rw-r--r--arch/x86/boot/header.S6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index 6d2df8d..af86e43 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -120,7 +120,7 @@ _start:
# Part 2 of the header, from the old setup.S
.ascii "HdrS" # header signature
- .word 0x0208 # header version number (>= 0x0105)
+ .word 0x0209 # header version number (>= 0x0105)
# or else old loadlin-1.5 will fail)
.globl realmode_swtch
realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
@@ -227,6 +227,10 @@ hardware_subarch_data: .quad 0
payload_offset: .long input_data
payload_length: .long input_data_end-input_data
+setup_data: .quad 0 # 64-bit physical pointer to
+ # single linked list of
+ # struct setup_data
+
# End of setup header #####################################################
.section ".inittext", "ax"
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