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* Fri Aug 21 2026 Jon Maloy <jmaloy@redhat.com> - 1.16.3-6

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- seabios-add-romfile_loadbool.patch [RHEL-236811]
- seabios-update-pci_pad_mem64-handling.patch [RHEL-236811]
- Resolves: RHEL-236811
  (Backport opt/org.seabios/pci64 to SeaBIOS 1.16 / el9)
This commit is contained in:
Jon Maloy 2026-08-21 18:27:23 -04:00
parent b1eaffacd3
commit 160dabd64a
3 changed files with 144 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
seabios-add-romfile_loadbool.patch Normal file
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@ -0,0 +1,72 @@
From 6cd6830764979960144b63e7aecb0981b1445e43 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Fri, 22 Nov 2024 15:16:32 +0100
Subject: [PATCH 1/2] add romfile_loadbool()
RH-Author: Gerd Hoffmann <kraxel@redhat.com>
RH-MergeRequest: 14: update pci_pad_mem64 handling
RH-Jira: RHEL-236811
RH-Acked-by: Luigi Leonardi <None>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Commit: [1/2] af1e580e50ce2405a9fe286ee296a343e811a618 (kraxel.rh/centos-src-seabios)
Translates strings in fw_cfg files into boolean values.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit a4fc1845b43687fe01c6f53fca9d7c1ac1b725d7)
Resolves: RHEL-236811
---
src/romfile.c | 23 +++++++++++++++++++++++
src/romfile.h | 1 +
2 files changed, 24 insertions(+)
diff --git a/src/romfile.c b/src/romfile.c
index b598274e..8072a915 100644
--- a/src/romfile.c
+++ b/src/romfile.c
@@ -99,6 +99,29 @@ romfile_loadint(const char *name, u64 defval)
return val;
}
+u32
+romfile_loadbool(const char *name, u32 defval)
+{
+ static const char *true_strings[] = { "1", "on", "yes" };
+ static const char *false_strings[] = { "0", "off", "no" };
+ char *str = romfile_loadfile(name, NULL);
+ int i;
+
+ if (!str)
+ return defval;
+
+ for (i = 0; i < ARRAY_SIZE(true_strings); i++)
+ if (0 == strcmp(str, true_strings[i]))
+ return 1;
+
+ for (i = 0; i < ARRAY_SIZE(false_strings); i++)
+ if (0 == strcmp(str, false_strings[i]))
+ return 0;
+
+ dprintf(1, "%s: unknown bool string: %s\n", __func__, str);
+ return defval;
+}
+
struct const_romfile_s {
struct romfile_s file;
void *data;
diff --git a/src/romfile.h b/src/romfile.h
index 3e0f8200..ae2f4ac7 100644
--- a/src/romfile.h
+++ b/src/romfile.h
@@ -15,6 +15,7 @@ struct romfile_s *romfile_findprefix(const char *prefix, struct romfile_s *prev)
struct romfile_s *romfile_find(const char *name);
void *romfile_loadfile(const char *name, int *psize);
u64 romfile_loadint(const char *name, u64 defval);
+u32 romfile_loadbool(const char *name, u32 defval);
void const_romfile_add_int(char *name, u32 value);
--
2.52.0

61
seabios-update-pci_pad_mem64-handling.patch Normal file
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@ -0,0 +1,61 @@
From 85dd4b3d7b036e58a051ba78f013c7123d1ea7db Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Thu, 21 Nov 2024 16:35:41 +0100
Subject: [PATCH 2/2] update pci_pad_mem64 handling
RH-Author: Gerd Hoffmann <kraxel@redhat.com>
RH-MergeRequest: 14: update pci_pad_mem64 handling
RH-Jira: RHEL-236811
RH-Acked-by: Luigi Leonardi <None>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Commit: [2/2] 514f7215773fdd853b562eac3b8ece7f88b98e45 (kraxel.rh/centos-src-seabios)
Add a new possible state: '-1' means 'use default'. In that case
seabios continue to use the current heuristic: In case memory
above 4G is present enable 64-bit guest friendly configuration.
This allows forcing the one or the other behavior by setting the
pci_pad_mem64 variable beforehand (which is done by another patch).
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit df9dd418b3b0e586cb208125094620fc7f90f23d)
Resolves: RHEL-236811
---
src/fw/pciinit.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c
index bb44dc29..658d806d 100644
--- a/src/fw/pciinit.c
+++ b/src/fw/pciinit.c
@@ -55,7 +55,7 @@ u64 pcimem64_end = BUILD_PCIMEM64_END;
// Resource allocation limits
static u64 pci_io_low_end = 0xa000;
static u64 pci_mem64_top = 0;
-static u32 pci_pad_mem64 = 0;
+static u32 pci_pad_mem64 = -1;
struct pci_region_entry {
struct pci_device *dev;
@@ -1197,8 +1197,15 @@ pci_setup(void)
}
}
- if (CPUPhysBits >= 36 && CPULongMode && RamSizeOver4G)
- pci_pad_mem64 = 1;
+ pci_pad_mem64 = romfile_loadbool("opt/org.seabios/pci64", -1);
+
+ if (pci_pad_mem64 == -1)
+ // when not set enable in case memory over 4G is present
+ pci_pad_mem64 = RamSizeOver4G ? 1 : 0;
+
+ if (!CPULongMode)
+ // force off for 32-bit CPUs
+ pci_pad_mem64 = 0;
dprintf(1, "=== PCI bus & bridge init ===\n");
if (pci_probe_host() != 0) {
--
2.52.0

12
seabios.spec
View File

@ -1,6 +1,6 @@
Name: seabios
Version: 1.16.3
Release: 5%{?dist}
Release: 6%{?dist}
Summary: Open-source legacy BIOS implementation
License: LGPLv3
@ -23,6 +23,10 @@ Patch2: seabios-display-error-message-for-blocksizes-512.patch
Patch3: seabios-pciinit-don-t-misalign-large-BARs.patch
# For RHEL-131918 - [rhel-9] SeaBIOS date is "stuck" at 2014 even for recent releases
Patch4: seabios-update-release-date.patch
# For RHEL-236811 - Backport opt/org.seabios/pci64 to SeaBIOS 1.16 / el9
Patch5: seabios-add-romfile_loadbool.patch
# For RHEL-236811 - Backport opt/org.seabios/pci64 to SeaBIOS 1.16 / el9
Patch6: seabios-update-pci_pad_mem64-handling.patch
BuildRequires: make
BuildRequires: gcc
@ -139,6 +143,12 @@ install -m 0644 binaries/vgabios*.bin $RPM_BUILD_ROOT%{_datadir}/seavgabios
%{_datadir}/seavgabios/vgabios*.bin
%changelog
* Fri Aug 21 2026 Jon Maloy <jmaloy@redhat.com> - 1.16.3-6
- seabios-add-romfile_loadbool.patch [RHEL-236811]
- seabios-update-pci_pad_mem64-handling.patch [RHEL-236811]
- Resolves: RHEL-236811
(Backport opt/org.seabios/pci64 to SeaBIOS 1.16 / el9)
* Tue Dec 02 2025 Jon Maloy <jmaloy@redhat.com> - 1.16.3-5
- seabios-update-release-date.patch [RHEL-131918 RHEL-131921]
- seabios-turn-off-SMM-support.patch [RHEL-131918 RHEL-131921]