diff options
| -rw-r--r-- | arch/s390/boot/compressed/decompressor.h | 2 | ||||
| -rw-r--r-- | arch/s390/boot/compressed/vmlinux.lds.S | 1 | ||||
| -rw-r--r-- | arch/s390/boot/startup.c | 4 | ||||
| -rw-r--r-- | arch/s390/include/asm/sections.h | 7 | ||||
| -rw-r--r-- | arch/s390/include/asm/vmlinux.lds.h | 13 | ||||
| -rw-r--r-- | arch/s390/kernel/vmlinux.lds.S | 4 |
6 files changed, 31 insertions, 0 deletions
diff --git a/arch/s390/boot/compressed/decompressor.h b/arch/s390/boot/compressed/decompressor.h index e1c1f2ec60f4..424cf524aac1 100644 --- a/arch/s390/boot/compressed/decompressor.h +++ b/arch/s390/boot/compressed/decompressor.h @@ -17,6 +17,8 @@ struct vmlinux_info { unsigned long bss_size; /* uncompressed image .bss size */ unsigned long bootdata_off; unsigned long bootdata_size; + unsigned long bootdata_preserved_off; + unsigned long bootdata_preserved_size; }; extern char _vmlinux_info[]; diff --git a/arch/s390/boot/compressed/vmlinux.lds.S b/arch/s390/boot/compressed/vmlinux.lds.S index 7efc3938f595..1c8ef393c656 100644 --- a/arch/s390/boot/compressed/vmlinux.lds.S +++ b/arch/s390/boot/compressed/vmlinux.lds.S @@ -34,6 +34,7 @@ SECTIONS _edata = . ; } BOOT_DATA + BOOT_DATA_PRESERVED /* * uncompressed image info used by the decompressor it should match diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c index bdfc5549a299..57d7f9446e29 100644 --- a/arch/s390/boot/startup.c +++ b/arch/s390/boot/startup.c @@ -6,6 +6,7 @@ #include "boot.h" extern char __boot_data_start[], __boot_data_end[]; +extern char __boot_data_preserved_start[], __boot_data_preserved_end[]; void error(char *x) { @@ -43,6 +44,9 @@ static void copy_bootdata(void) if (__boot_data_end - __boot_data_start != vmlinux.bootdata_size) error(".boot.data section size mismatch"); memcpy((void *)vmlinux.bootdata_off, __boot_data_start, vmlinux.bootdata_size); + if (__boot_data_preserved_end - __boot_data_preserved_start != vmlinux.bootdata_preserved_size) + error(".boot.preserved.data section size mismatch"); + memcpy((void *)vmlinux.bootdata_preserved_off, __boot_data_preserved_start, vmlinux.bootdata_preserved_size); } void startup_kernel(void) diff --git a/arch/s390/include/asm/sections.h b/arch/s390/include/asm/sections.h index 7afe4620685c..29e55739b516 100644 --- a/arch/s390/include/asm/sections.h +++ b/arch/s390/include/asm/sections.h @@ -16,4 +16,11 @@ */ #define __bootdata(var) __section(.boot.data.var) var +/* + * .boot.preserved.data is similar to .boot.data, but it is not part of the + * .init section and thus will be preserved for later use in the decompressed + * kernel. + */ +#define __bootdata_preserved(var) __section(.boot.preserved.data.var) var + #endif diff --git a/arch/s390/include/asm/vmlinux.lds.h b/arch/s390/include/asm/vmlinux.lds.h index 2d127f900352..cbe670a6861b 100644 --- a/arch/s390/include/asm/vmlinux.lds.h +++ b/arch/s390/include/asm/vmlinux.lds.h @@ -18,3 +18,16 @@ *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.boot.data*))) \ __boot_data_end = .; \ } + +/* + * .boot.preserved.data is similar to .boot.data, but it is not part of the + * .init section and thus will be preserved for later use in the decompressed + * kernel. + */ +#define BOOT_DATA_PRESERVED \ + . = ALIGN(PAGE_SIZE); \ + .boot.preserved.data : { \ + __boot_data_preserved_start = .; \ + *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.boot.preserved.data*))) \ + __boot_data_preserved_end = .; \ + } diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 8429ab079715..6ef9c62bb01b 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -72,6 +72,7 @@ SECTIONS __end_ro_after_init = .; RW_DATA_SECTION(0x100, PAGE_SIZE, THREAD_SIZE) + BOOT_DATA_PRESERVED _edata = .; /* End of data section */ @@ -161,6 +162,9 @@ SECTIONS QUAD(__bss_stop - __bss_start) /* bss_size */ QUAD(__boot_data_start) /* bootdata_off */ QUAD(__boot_data_end - __boot_data_start) /* bootdata_size */ + QUAD(__boot_data_preserved_start) /* bootdata_preserved_off */ + QUAD(__boot_data_preserved_end - + __boot_data_preserved_start) /* bootdata_preserved_size */ } :NONE /* Debugging sections. */ |