[commit] r1353 - in trunk/openbios-devel: arch/ppc/qemu drivers include/drivers

[repository service]

Author: mcayland
Date: Fri Oct 23 14:58:22 2015
New Revision: 1353
URL: http://tracker.coreboot.org/trac/openbios/changeset/1353

Log:
ppc: add ob_ide_quiesce() and call it from the PPC CIF quiesce word

Add a new ob_ide_quiesce() function and hook it into QEMU PPC's ciface_quiesce()
routine to properly prepare the drives for transferring control to the operating
system.

Without this OS 9 becomes confused about the initial drive state on boot and
refuses to correctly detect and initialise it.

Based upon an original patch by Cormac O'Brien <[e-mail]>.

Signed-off-by: Mark Cave-Ayland <[e-mail]>

Modified:
   trunk/openbios-devel/arch/ppc/qemu/methods.c
   trunk/openbios-devel/drivers/ide.c
   trunk/openbios-devel/include/drivers/drivers.h

Modified: trunk/openbios-devel/arch/ppc/qemu/methods.c
==============================================================================
--- trunk/openbios-devel/arch/ppc/qemu/methods.c	Fri Oct 23 14:58:20 2015	(r1352)
+++ trunk/openbios-devel/arch/ppc/qemu/methods.c	Fri Oct 23 14:58:22 2015	(r1353)
@@ -114,6 +114,8 @@
 ciface_quiesce( unsigned long args[], unsigned long ret[] )
 {
 	usb_exit();
+
+	ob_ide_quiesce();
 #if 0
 	unsigned long msr;
 	/* This seems to be the correct thing to do - but I'm not sure */

Modified: trunk/openbios-devel/drivers/ide.c
==============================================================================
--- trunk/openbios-devel/drivers/ide.c	Fri Oct 23 14:58:20 2015	(r1352)
+++ trunk/openbios-devel/drivers/ide.c	Fri Oct 23 14:58:22 2015	(r1353)
@@ -1488,6 +1488,28 @@
 	return 0;
 }
 
+void ob_ide_quiesce(void)
+{
+	struct ide_channel *channel;
+	int i;
+
+	channel = channels;
+	while (channel) {
+		for (i = 0; i < 2; i++) {
+			struct ide_drive *drive = &channel->drives[i];
+
+			if (!drive->present)
+				continue;
+
+			ob_ide_select_drive(drive);
+			ob_ide_software_reset(drive);
+			ob_ide_device_type_check(drive);
+		}
+
+		channel = channel->next;
+	}
+}
+
 #if defined(CONFIG_DRIVER_MACIO)
 static unsigned char
 macio_ide_inb(struct ide_channel *chan, unsigned int port)

Modified: trunk/openbios-devel/include/drivers/drivers.h
==============================================================================
--- trunk/openbios-devel/include/drivers/drivers.h	Fri Oct 23 14:58:20 2015	(r1352)
+++ trunk/openbios-devel/include/drivers/drivers.h	Fri Oct 23 14:58:22 2015	(r1353)
@@ -52,6 +52,7 @@
 /* drivers/ide.c */
 int ob_ide_init(const char *path, uint32_t io_port0, uint32_t ctl_port0,
                 uint32_t io_port1, uint32_t ctl_port1);
+void ob_ide_quiesce(void);
 int macio_ide_init(const char *path, uint32_t addr, int nb_channels);
 #endif
 #ifdef CONFIG_DRIVER_ESP