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pc-bios/s390-ccw: get LOADPARM stored in SCP Read Info

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Obtain the loadparm value stored in SCP Read Info by performing
a SCLP Read Info request.

Rename sclp-ascii.c to sclp.c to reflect the changed scope of
the file.

Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Farhan Ali 2016-11-30 14:22:07 -05:00 committed by Cornelia Huck
parent cfe2124a7f
commit 9a22473c70
4 changed files with 17 additions and 2 deletions
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2
pc-bios/s390-ccw/Makefile
View file

@ -9,7 +9,7 @@ $(call set-vpath, $(SRC_PATH)/pc-bios/s390-ccw)
.PHONY : all clean build-all
OBJECTS = start.o main.o bootmap.o sclp-ascii.o virtio.o virtio-scsi.o
OBJECTS = start.o main.o bootmap.o sclp.o virtio.o virtio-scsi.o
QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS))
QEMU_CFLAGS += -ffreestanding -fno-delete-null-pointer-checks -msoft-float
QEMU_CFLAGS += -march=z900 -fPIE -fno-strict-aliasing

3
pc-bios/s390-ccw/s390-ccw.h
View file

@ -63,9 +63,10 @@ void panic(const char *string);
void write_subsystem_identification(void);
extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
/* sclp-ascii.c */
/* sclp.c */
void sclp_print(const char *string);
void sclp_setup(void);
void sclp_get_loadparm_ascii(char *loadparm);
/* virtio.c */
unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,

12
pc-bios/s390-ccw/sclp-ascii.c → pc-bios/s390-ccw/sclp.c
View file

@ -80,3 +80,15 @@ void sclp_print(const char *str)
sclp_service_call(SCLP_CMD_WRITE_EVENT_DATA, sccb);
}
void sclp_get_loadparm_ascii(char *loadparm)
{
ReadInfo *sccb = (void *)_sccb;
memset((char *)_sccb, 0, sizeof(ReadInfo));
sccb->h.length = sizeof(ReadInfo);
if (!sclp_service_call(SCLP_CMDW_READ_SCP_INFO, sccb)) {
ebcdic_to_ascii((char *) sccb->loadparm, loadparm, 8);
}
}

2
pc-bios/s390-ccw/sclp.h
View file

@ -55,6 +55,8 @@ typedef struct ReadInfo {
SCCBHeader h;
uint16_t rnmax;
uint8_t rnsize;
uint8_t reserved[13];
uint8_t loadparm[8];
} __attribute__((packed)) ReadInfo;
typedef struct SCCB {