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85 lines
2.8 KiB
Diff
85 lines
2.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Eric Snowberg <eric.snowberg@oracle.com>
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Date: Tue, 20 Feb 2018 09:57:14 -0800
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Subject: [PATCH] ieee1275: add nvme support within ofpath
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Add NVMe support within ofpath.
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The Open Firmware text representation for a NVMe device contains the
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Namespace ID. An invalid namespace ID is one whose value is zero or whose
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value is greater than the value reported by the Number of Namespaces (NN)
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field in the Identify Controller data structure. At the moment only a
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single Namespace is supported, therefore the value is currently hard coded
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to one.
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Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/osdep/linux/ofpath.c | 47 ++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 47 insertions(+)
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diff --git a/grub-core/osdep/linux/ofpath.c b/grub-core/osdep/linux/ofpath.c
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index 8d7d6837f26..4308fceda35 100644
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--- a/grub-core/osdep/linux/ofpath.c
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+++ b/grub-core/osdep/linux/ofpath.c
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@@ -350,6 +350,50 @@ of_path_of_ide(const char *sys_devname __attribute__((unused)), const char *devi
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return ret;
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}
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+static char *
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+of_path_of_nvme(const char *sys_devname __attribute__((unused)),
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+ const char *device,
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+ const char *devnode __attribute__((unused)),
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+ const char *devicenode)
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+{
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+ char *sysfs_path, *of_path, disk[MAX_DISK_CAT];
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+ const char *digit_string, *part_end;
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+
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+ digit_string = trailing_digits (device);
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+ part_end = devicenode + strlen (devicenode) - 1;
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+
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+ if ((digit_string != '\0') && (*part_end == 'p'))
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+ {
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+ /* We have a partition number, strip it off. */
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+ int part;
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+ char *nvmedev, *end;
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+
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+ nvmedev = strdup (devicenode);
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+
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+ if (!nvmedev)
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+ return NULL;
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+
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+ end = nvmedev + strlen (nvmedev) - 1;
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+ /* Remove the p. */
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+ *end = '\0';
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+ sscanf (digit_string, "%d", &part);
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+ snprintf (disk, sizeof (disk), "/disk@1:%c", 'a' + (part - 1));
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+ sysfs_path = block_device_get_sysfs_path_and_link (nvmedev);
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+ free (nvmedev);
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+ }
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+ else
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+ {
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+ /* We do not have the parition. */
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+ snprintf (disk, sizeof (disk), "/disk@1");
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+ sysfs_path = block_device_get_sysfs_path_and_link (device);
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+ }
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+
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+ of_path = find_obppath (sysfs_path);
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+ free (sysfs_path);
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+ strcat (of_path, disk);
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+ return of_path;
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+}
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+
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static int
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vendor_is_ATA(const char *path)
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{
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@@ -681,6 +725,9 @@ grub_util_devname_to_ofpath (const char *sys_devname)
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/* All the models I've seen have a devalias "floppy".
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New models have no floppy at all. */
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ofpath = xstrdup ("floppy");
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+ else if (device[0] == 'n' && device[1] == 'v' && device[2] == 'm'
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+ && device[3] == 'e')
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+ ofpath = of_path_of_nvme (name_buf, device, devnode, devicenode);
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else
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{
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grub_util_warn (_("unknown device type %s"), device);
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