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Diffstat (limited to 'pc-bios/s390-ccw/start.S')
-rw-r--r-- | pc-bios/s390-ccw/start.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S new file mode 100644 index 000000000..5d5df0d61 --- /dev/null +++ b/pc-bios/s390-ccw/start.S @@ -0,0 +1,33 @@ +/* + * First stage boot loader for virtio devices. The compiled output goes + * into the pc-bios directory of qemu. + * + * Copyright (c) 2013 Alexander Graf <agraf@suse.de> + * Copyright 2013 IBM Corp. + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + + .globl _start +_start: + +larl %r15, stack + 0x8000 /* Set up stack */ +larl %r6, boot_value +stg %r7, 0(%r6) /* save the boot_value before any function calls */ +j main /* And call C */ + +/* + * void disabled_wait(void) + * + * stops the current guest cpu. + */ + .globl disabled_wait +disabled_wait: + larl %r1,disabled_wait_psw + lpswe 0(%r1) + + .align 8 +disabled_wait_psw: + .quad 0x0002000180000000,0x0000000000000000 |