124 lines
4.6 KiB
Diff
124 lines
4.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Robbie Harwood <rharwood@redhat.com>
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Date: Wed, 25 Jan 2023 16:10:58 -0500
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Subject: [PATCH] ppc64le: signed boot media changes
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Skip mdraid < 1.1 on isos since mdraid* can't even
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Prior to this change, on ppc64le with part_msdos and the mdraid* modules
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enabled, we see:
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disk/diskfilter.c:191: scanning ieee1275/cdrom
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kern/disk.c:196: Opening `ieee1275/cdrom'...
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disk/ieee1275/ofdisk.c:477: Opening `cdrom'.
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disk/ieee1275/ofdisk.c:502: MAX_RETRIES set to 20
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kern/disk.c:288: Opening `ieee1275/cdrom' succeeded.
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disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk ieee1275/cdrom
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partmap/msdos.c:184: partition 0: flag 0x80, type 0x96, start 0x0, len
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0x6a5d70
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disk/diskfilter.c:136: Scanning for DISKFILTER devices on disk ieee1275/cdrom
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SCSI-DISK: Access beyond end of device !
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SCSI-DISK: Access beyond end of device !
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SCSI-DISK: Access beyond end of device !
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SCSI-DISK: Access beyond end of device !
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SCSI-DISK: Access beyond end of device !
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disk/ieee1275/ofdisk.c:578: MAX_RETRIES set to 20
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These latter two lines repeat many times, eventually ending in:
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kern/disk.c:388: ieee1275/cdrom read failed
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error: ../../grub-core/disk/ieee1275/ofdisk.c:608:failure reading sector
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0x1a9720 from `ieee1275/cdrom'.
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and the system drops to a "grub>" prompt.
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Prior to 1.1, mdraid stored the superblock offset from the end of the
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disk, and the firmware really doesn't like reads there. Best guess was
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that the firmware and the iso image appear to diagree on the blocksize
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(512 vs. 2048), and the diskfilter RAID probing is too much for it.
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It's tempting to just skip probing for cdroms, but unfortunately isos
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can be virtualized elsewhere - such as regular disks.
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Also fix detection of root, and try the chrp path as a fallback if the
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built prefix doesn't work.
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Signed-off-by: Robbie Harwood <rharwood@redhat.com>
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wip
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---
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grub-core/disk/mdraid1x_linux.c | 6 ++++++
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grub-core/disk/mdraid_linux.c | 5 +++++
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grub-core/kern/ieee1275/openfw.c | 2 +-
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grub-core/normal/main.c | 5 +++++
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4 files changed, 17 insertions(+), 1 deletion(-)
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diff --git a/grub-core/disk/mdraid1x_linux.c b/grub-core/disk/mdraid1x_linux.c
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index 72e5cb6f481..3b5b6c42342 100644
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--- a/grub-core/disk/mdraid1x_linux.c
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+++ b/grub-core/disk/mdraid1x_linux.c
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@@ -130,6 +130,12 @@ grub_mdraid_detect (grub_disk_t disk,
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struct grub_diskfilter_vg *array;
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char *uuid;
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+#ifdef __powerpc__
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+ /* Firmware will yell at us for reading too far. */
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+ if (minor_version == 0)
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+ continue;
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+#endif
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+
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if (size == GRUB_DISK_SIZE_UNKNOWN && minor_version == 0)
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continue;
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diff --git a/grub-core/disk/mdraid_linux.c b/grub-core/disk/mdraid_linux.c
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index e40216f5111..98fcfb1be69 100644
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--- a/grub-core/disk/mdraid_linux.c
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+++ b/grub-core/disk/mdraid_linux.c
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@@ -189,6 +189,11 @@ grub_mdraid_detect (grub_disk_t disk,
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grub_uint32_t level;
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struct grub_diskfilter_vg *ret;
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+#ifdef __powerpc__
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+ /* Firmware will yell at us for reading too far. */
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+ return NULL;
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+#endif
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+
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/* The sector where the mdraid 0.90 superblock is stored, if available. */
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size = grub_disk_native_sectors (disk);
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if (size == GRUB_DISK_SIZE_UNKNOWN)
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diff --git a/grub-core/kern/ieee1275/openfw.c b/grub-core/kern/ieee1275/openfw.c
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index e2ecc65d2d8..65616254e02 100644
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--- a/grub-core/kern/ieee1275/openfw.c
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+++ b/grub-core/kern/ieee1275/openfw.c
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@@ -499,7 +499,7 @@ grub_ieee1275_encode_devname (const char *path)
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*optr++ ='\\';
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*optr++ = *iptr++;
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}
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- if (partition && partition[0])
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+ if (partition && partition[0] >= '0' && partition[0] <= '9')
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{
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unsigned int partno = grub_strtoul (partition, 0, 0);
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diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
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index fc3ed551cec..e903f291732 100644
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--- a/grub-core/normal/main.c
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+++ b/grub-core/normal/main.c
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@@ -372,6 +372,7 @@ grub_try_normal_prefix (const char *prefix)
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file = grub_file_open (config, GRUB_FILE_TYPE_CONFIG);
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if (file)
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{
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+ grub_env_set ("prefix", prefix);
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grub_file_close (file);
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err = GRUB_ERR_NONE;
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}
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@@ -447,6 +448,10 @@ grub_cmd_normal (struct grub_command *cmd __attribute__ ((unused)),
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err = grub_try_normal ("fw_path");
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if (err == GRUB_ERR_FILE_NOT_FOUND)
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err = grub_try_normal ("prefix");
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+#ifdef __powerpc__
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+ if (err == GRUB_ERR_FILE_NOT_FOUND)
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+ err = grub_try_normal_prefix ("/boot/grub");
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+#endif
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if (err == GRUB_ERR_FILE_NOT_FOUND)
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err = grub_try_normal_discover ();
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if (err == GRUB_ERR_FILE_NOT_FOUND)
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