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100 lines
2.9 KiB
100 lines
2.9 KiB
From 2844d07e4bba2301fef66f56574c92054bac7cac Mon Sep 17 00:00:00 2001
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From: Steffen Eiden <seiden@linux.ibm.com>
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Date: Mon, 25 Jul 2022 12:57:53 +0200
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Subject: [PATCH 1/2] zipl: Add missing check for a nullpointer.
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Fixes a bug that leads to a segmentation fault when no parmline is
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provided.
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Fixes: 11b401b5 ("zipl: move and make check for maximum command line length dynamic")
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Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
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Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
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Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
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---
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zipl/src/job.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/zipl/src/job.c b/zipl/src/job.c
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index ffdc297..b5bf5b2 100644
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--- a/zipl/src/job.c
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+++ b/zipl/src/job.c
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@@ -790,7 +790,7 @@ check_common_ipl_data(struct job_common_ipl_data *common, const char *section,
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if (!max_parm_size)
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max_parm_size = LEGACY_MAXIMUM_PARMLINE_SIZE;
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- len = strlen(common->parmline);
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+ len = common->parmline ? strlen(common->parmline) : 0;
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if (len > max_parm_size) {
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error_text("The length of the parameters line "
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"(%d bytes) exceeds the allowed maximum "
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--
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2.38.1
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From ce0c37988aecad84da61b5823035a983872e4ac8 Mon Sep 17 00:00:00 2001
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From: Peter Oberparleiter <oberpar@linux.ibm.com>
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Date: Fri, 16 Sep 2022 15:13:01 +0200
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Subject: [PATCH 2/2] zipl/boot: add secure boot trailer
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This patch enhances the zipl stage3 loader image adding a trailer as
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required for secure boot by future firmware versions.
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Note: with the change in this patch the padding via objcopy command line
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options is replaced by padding via linker script directives with the
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same effect.
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Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
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Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
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---
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zipl/boot/Makefile | 2 +-
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zipl/boot/stage3.lds.S | 10 ++++++++++
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2 files changed, 11 insertions(+), 1 deletion(-)
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diff --git a/zipl/boot/Makefile b/zipl/boot/Makefile
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index c2ec76a..f195df0 100644
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--- a/zipl/boot/Makefile
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+++ b/zipl/boot/Makefile
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@@ -106,7 +106,7 @@ stage3.bin: stage3.exec
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--only-section=.stage2dump.tail \
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--only-section=.eckd2dump_mv.tail \
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--only-section=.fixup \
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- --pad-to=0xe000 \
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+ --only-section=.sb.trailer \
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$< $@
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data.o: $(FILES)
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diff --git a/zipl/boot/stage3.lds.S b/zipl/boot/stage3.lds.S
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index fa4c81f..d8305f1 100644
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--- a/zipl/boot/stage3.lds.S
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+++ b/zipl/boot/stage3.lds.S
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@@ -14,6 +14,7 @@
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*/
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#include "boot/loaders_layout.h"
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+#include "boot/s390.h"
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SECTIONS
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{
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@@ -46,6 +47,15 @@ SECTIONS
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.rodata : {*(.rodata) }
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.data : { *(.data) }
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+ /* Trailer needed for Secure Boot */
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+ . = COMMAND_LINE_EXTRA - 32;
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+ .sb.trailer : {
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+ QUAD(0x0000c00000000000)
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+ QUAD(STAGE3_ENTRY + PSW_LOAD)
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+ QUAD(STAGE3_ENTRY)
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+ QUAD(0x000000207a49504c)
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+ }
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+
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. = COMMAND_LINE_EXTRA;
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.cmdline_extra : {
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. += COMMAND_LINE_EXTRA_SIZE;
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--
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2.38.1
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