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[S390] Convert memory detection into C code.

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Hopefully this will make it more maintainable and less error prone.
Code makes use of search_exception_tables(). Since it calls this
function before the kernel exeception table is sorted, there is an
early call to sort_main_extable().

This way it's easy to use the already present infrastructure of fixup
sections. Also this would allows to easily convert the rest of
head[31|64].S into C code.

Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Heiko Carstens 2007-02-05 21:18:37 +01:00 • committed by Martin Schwidefsky
commit ab14de6c37
21 changed files with 598 additions and 609 deletions
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12
include/asm-s390/processor.h
View file

@ -330,6 +330,18 @@ static inline void disabled_wait(unsigned long code)
#endif /* __s390x__ */
}
/*
* Basic Machine Check/Program Check Handler.
*/
extern void s390_base_mcck_handler(void);
extern void s390_base_pgm_handler(void);
extern void s390_base_ext_handler(void);
extern void (*s390_base_mcck_handler_fn)(void);
extern void (*s390_base_pgm_handler_fn)(void);
extern void (*s390_base_ext_handler_fn)(void);
/*
* CPU idle notifier chain.
*/

3
include/asm-s390/reset.h
View file

@ -18,7 +18,4 @@ struct reset_call {
extern void register_reset_call(struct reset_call *reset);
extern void unregister_reset_call(struct reset_call *reset);
extern void s390_reset_system(void);
extern void (*s390_reset_mcck_handler)(void);
extern void (*s390_reset_pgm_handler)(void);
#endif /* _ASM_S390_RESET_H */

39
include/asm-s390/sclp.h Normal file
View file

@ -0,0 +1,39 @@
/*
* include/asm-s390/sclp.h
*
* Copyright IBM Corp. 2007
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
*/
#ifndef _ASM_S390_SCLP_H
#define _ASM_S390_SCLP_H
#include <linux/types.h>
struct sccb_header {
u16 length;
u8 function_code;
u8 control_mask[3];
u16 response_code;
} __attribute__((packed));
#define LOADPARM_LEN 8
struct sclp_readinfo_sccb {
struct sccb_header header; /* 0-7 */
u16 rnmax; /* 8-9 */
u8 rnsize; /* 10 */
u8 _reserved0[24 - 11]; /* 11-23 */
u8 loadparm[LOADPARM_LEN]; /* 24-31 */
u8 _reserved1[91 - 32]; /* 32-90 */
u8 flags; /* 91 */
u8 _reserved2[100 - 92]; /* 92-99 */
u32 rnsize2; /* 100-103 */
u64 rnmax2; /* 104-111 */
u8 _reserved3[4096 - 112]; /* 112-4095 */
} __attribute__((packed, aligned(4096)));
extern struct sclp_readinfo_sccb s390_readinfo_sccb;
extern void sclp_readinfo_early(void);
#endif /* _ASM_S390_SCLP_H */