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| author | Alexander Egorenkov <egorenar@linux.ibm.com> | 2021-06-15 14:25:41 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2021-07-27 09:39:16 +0200 |
| commit | e9e7870f90e3587b712e05db2ded947a3f617119 (patch) | |
| tree | 5f46c90fdecbab876787f31650b0bae4be075b7f /arch/s390/include/asm/setup.h | |
| parent | 84733284f67b1a937f6205fdb16aa5cbb8b4f53d (diff) | |
| download | linux-e9e7870f90e3587b712e05db2ded947a3f617119.tar.gz linux-e9e7870f90e3587b712e05db2ded947a3f617119.tar.bz2 linux-e9e7870f90e3587b712e05db2ded947a3f617119.zip | |
s390/dump: introduce boot data 'oldmem_data'
The new boot data struct shall replace global variables OLDMEM_BASE and
OLDMEM_SIZE. It is initialized in the decompressor and passed
to the decompressed kernel. In comparison to the old solution, this one
doesn't access data at fixed physical addresses which will become important
when the decompressor becomes relocatable.
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/setup.h')
| -rw-r--r-- | arch/s390/include/asm/setup.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index d693ee4e8e04..34baea528c01 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -60,8 +60,6 @@ #include <asm/types.h> #define IPL_DEVICE (*(unsigned long *) (IPL_DEVICE_OFFSET)) -#define OLDMEM_BASE (*(unsigned long *) (OLDMEM_BASE_OFFSET)) -#define OLDMEM_SIZE (*(unsigned long *) (OLDMEM_SIZE_OFFSET)) #define COMMAND_LINE ((char *) (COMMAND_LINE_OFFSET)) struct parmarea { @@ -164,6 +162,12 @@ struct initrd_data { }; extern struct initrd_data initrd_data; +struct oldmem_data { + unsigned long start; + unsigned long size; +}; +extern struct oldmem_data oldmem_data; + static inline u32 gen_lpswe(unsigned long addr) { BUILD_BUG_ON(addr > 0xfff); |