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zipl: add dummy section for stage3 heap and stack

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The firmware needs to know which memory locations are used by
the stage 3 loader so that it can allocate its own memory.
To indicate the usage of the heap and stack area of the stage 3 loader
add a dummy component to block this memory area for the firmware.

Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Stefan Haberland
2019-04-08 17:54:32 +02:00
committed by Jan Höppner
parent 75d4317f20
commit dc2e439550
2 changed files with 58 additions and 1 deletions
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zipl/include/zipl.h
+5
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@@ -32,6 +32,11 @@
#define MAXIMUM_PARMLINE_SIZE 0x380
#define MAXIMUM_PHYSICAL_BLOCKSIZE 0x1000
#define STAGE3_HEAP_SIZE 0x4000
#define STAGE3_HEAP_ADDRESS 0x2000
#define STAGE3_STACK_SIZE 0x1000
#define STAGE3_STACK_ADDRESS 0xF000
#define PSW_ADDRESS_MASK 0x000000007fffffffLL
#define PSW_LOAD 0x0008000080000000LL
#define PSW_DISABLED_WAIT 0x000a000000000000LL