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zipl/boot: Improve linker scripts

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Output all text input sections into one text section and map all input
sections .bss.* .text.*, .rodata.*, and .data.* as it's done by the
default linker script [1]. In addition, make the linker script easier to
read by replacing the magic value of 32 with 'SIZEOF(.sb.trailer)'.

[1] Check the output of 'ld --verbose'.

Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Marc Hartmayer
2025-08-15 14:31:34 +00:00
committed by Jan Höppner
parent 35e539a428
commit a1126352ec
3 changed files with 19 additions and 16 deletions
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zipl/boot/stage3.lds.S
+9 -6
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@@ -34,26 +34,29 @@ SECTIONS
_stage3_parms = .;
. = STAGE3_ENTRY;
.text.start : { *(.text.start) }
.text : { *(.text) }
.text : {
*(.text.start)
*(.text .text.*)
}
__ex_table_start = .;
.ex_table : { *(.ex_table) }
__ex_table_stop = .;
__bss_start = .;
.bss : { *(.bss) }
.bss : { *(.bss .bss.*) }
__bss_stop = .;
.rodata : {*(.rodata) }
.data : { *(.data) }
.rodata : {*(.rodata .rodata.*) }
.data : { *(.data .data.*) }
/* Trailer needed for Secure Boot */
. = COMMAND_LINE_EXTRA - 32;
. = COMMAND_LINE_EXTRA - SIZEOF(.sb.trailer);
.sb.trailer : {
QUAD(0x0000c00000000000)
QUAD(STAGE3_ENTRY + PSW_LOAD)
QUAD(STAGE3_ENTRY)
QUAD(0x000000207a49504c)
}
ASSERT(SIZEOF(.sb.trailer) == 32, "Invalid .sb.trailer size")
. = COMMAND_LINE_EXTRA;
.cmdline_extra : {