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| author |   Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2009-09-11 10:28:40 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-09-11 10:29:46 +0200 |
| commit | 684d2fd48e718e70dad21ef7c528649578147e48 (patch) | |
| tree | d830bd35b8871f29998dbeada751e07e310ddac8 /arch/s390/include/asm/ipl.h | |
| parent | [S390] tape: use init_timer_on_stack() rather than init_timer() (diff) | |
| download | linux-dev-684d2fd48e718e70dad21ef7c528649578147e48.tar.xz linux-dev-684d2fd48e718e70dad21ef7c528649578147e48.zip | |
[S390] kernel: Append scpdata to kernel boot command line
Append scpdata to the kernel boot command line. If scpdata starts
with the equal sign (=), the kernel boot command line is replaced.
(For consistency with zIPL and IPL PARM parameters.)
To use scpdata for the kernel boot command line, scpdata must consist
of ascii characters only. If scpdata contains other characters,
scpdata is not appended to the kernel boot command line.
In addition, re-IPL is extended for setting scpdata for the next
Linux reboot.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/ipl.h')
| -rw-r--r-- | arch/s390/include/asm/ipl.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h index 1171e6d144a3..5e95d95450b3 100644 --- a/arch/s390/include/asm/ipl.h +++ b/arch/s390/include/asm/ipl.h @@ -57,6 +57,8 @@ struct ipl_block_fcp { } __attribute__((packed)); #define DIAG308_VMPARM_SIZE 64 +#define DIAG308_SCPDATA_SIZE (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \ + offsetof(struct ipl_block_fcp, scp_data))) struct ipl_block_ccw { u8 load_parm[8]; @@ -91,7 +93,8 @@ extern void do_halt(void); extern void do_poff(void); extern void ipl_save_parameters(void); extern void ipl_update_parameters(void); -extern void get_ipl_vmparm(char *); +extern size_t append_ipl_vmparm(char *, size_t); +extern size_t append_ipl_scpdata(char *, size_t); enum { IPL_DEVNO_VALID = 1, |