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zipl/boot: Adjust Makefile, loaders layout and a linker script

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Use a separate linker script eckd2dump_sv.lds for single volume dumper with
compression support.

The new dump tool with zlib compression support now has a size of 8 pages.
Since DASD stand alone dump requires a block size of 4K, we are not
affected by the stage 2 size limitations and can load the dumper to
stage 2 as before. We just need to move the HEAP section for ECKD dumper
in the layout definitions up to 0xb000 address. Also expand the stack by
unused 0x400 bytes.

Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Mikhail Zaslonko
2023-02-24 17:32:11 +01:00
committed by Jan Höppner
parent d53bfb9201
commit 4905975f81
3 changed files with 83 additions and 3 deletions
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3
include/boot/loaders_layout.h
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@@ -22,9 +22,12 @@
#define STAGE2_DESC _AC(0x78, UL)
#define STAGE2_ENTRY _AC(0x2018, UL)
#define STAGE2_HEAP_ADDRESS _AC(0x6000, UL)
#define ECKD2DUMP_SV_HEAP_ADDRESS _AC(0xb000, UL)
#define STAGE2_HEAP_SIZE _AC(0x3000, UL)
#define STAGE2_STACK_ADDRESS _AC(0xe400, UL)
#define STAGE2_STACK_SIZE _AC(0x1c00, UL)
#define ECKD2DUMP_SV_STACK_ADDRESS _AC(0xe000, UL)
#define ECKD2DUMP_SV_STACK_SIZE _AC(0x2000, UL)
#define STAGE2_MAX_SIZE _AC(0x3000, UL)
#define STAGE3_ENTRY _AC(0xa000, UL)