grub2/grub-2.00-ppc-usb-quiesce.patch
2012-06-06 12:23:56 -04:00

89 lines
2.5 KiB
Diff

From a2bf9168b1a0e964b9db4bd2887aafdcf400d772 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Wed, 6 Jun 2012 12:14:19 -0400
Subject: [PATCH] Quiesce USB transactions on ppc.
---
grub-core/disk/ieee1275/ofdisk.c | 32 +++++++++++++++++++++++++++++
grub-core/loader/powerpc/ieee1275/linux.c | 2 ++
2 files changed, 34 insertions(+)
diff --git a/grub-core/disk/ieee1275/ofdisk.c b/grub-core/disk/ieee1275/ofdisk.c
index 7266af6..b5bb713 100644
--- a/grub-core/disk/ieee1275/ofdisk.c
+++ b/grub-core/disk/ieee1275/ofdisk.c
@@ -23,6 +23,7 @@
#include <grub/ieee1275/ieee1275.h>
#include <grub/ieee1275/ofdisk.h>
#include <grub/i18n.h>
+#include <grub/time.h>
static char *last_devpath;
static grub_ieee1275_ihandle_t last_ihandle;
@@ -475,6 +476,34 @@ grub_ofdisk_init (void)
grub_disk_dev_register (&grub_ofdisk_dev);
}
+static int quiesce (struct grub_ieee1275_devalias *alias)
+{
+ static grub_ieee1275_ihandle_t ihandle;
+ struct set_color_args
+ {
+ struct grub_ieee1275_common_hdr common;
+ grub_ieee1275_cell_t method;
+ grub_ieee1275_cell_t ihandle;
+ grub_ieee1275_cell_t catch_result;
+ }
+ args;
+
+ if (grub_strcmp (alias->type, "usb") != 0)
+ return 0;
+
+
+ if (grub_ieee1275_open (alias->path, &ihandle))
+ return 0;
+
+ INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 1);
+ args.method = (grub_ieee1275_cell_t) "usb-quiesce";
+ args.ihandle = ihandle;
+
+ IEEE1275_CALL_ENTRY_FN (&args);
+ grub_ieee1275_close (ihandle);
+ return 0;
+}
+
void
grub_ofdisk_fini (void)
{
@@ -483,5 +512,8 @@ grub_ofdisk_fini (void)
last_ihandle = 0;
last_devpath = NULL;
+ grub_ieee1275_devices_iterate (quiesce);
+ grub_millisleep (10);
+
grub_disk_dev_unregister (&grub_ofdisk_dev);
}
diff --git a/grub-core/loader/powerpc/ieee1275/linux.c b/grub-core/loader/powerpc/ieee1275/linux.c
index 5cfa988..a1abc2a 100644
--- a/grub-core/loader/powerpc/ieee1275/linux.c
+++ b/grub-core/loader/powerpc/ieee1275/linux.c
@@ -28,6 +28,7 @@
#include <grub/i18n.h>
#include <grub/memory.h>
#include <grub/lib/cmdline.h>
+#include <grub/cache.h>
GRUB_MOD_LICENSE ("GPLv3+");
@@ -102,6 +103,7 @@ grub_linux_boot (void)
kernel_entry_t linuxmain;
grub_ssize_t actual;
+ grub_arch_sync_caches ((void *) linux_addr, linux_size);
/* Set the command line arguments. */
grub_ieee1275_set_property (grub_ieee1275_chosen, "bootargs", linux_args,
grub_strlen (linux_args) + 1, &actual);
--
1.7.10.2