hello list,
with recent releases alix boards won't boot from CF card anymore.
attached is a patch for special support of the cs5536 IDE controller to fix the
broken support for alix and probably other geode LX boards with kernel 2.6.28.2
.
it is tested to apply against 14426 and 14430.
king regards
Dennis Bartsch
_
http://redirect.gimas.net/?n=M0902xSearchVideo
Videosuche - Ganz einfach mit der Live Searchdiff -Nur unpatched/target/linux/x86/config-2.6.28 trunk/target/linux/x86/config-2.6.28
--- unpatched/target/linux/x86/config-2.6.28 2009-02-07 16:39:23.0 +0100
+++ trunk/target/linux/x86/config-2.6.28 2009-02-07 16:05:04.0 +0100
@@ -39,6 +39,7 @@
CONFIG_BITREVERSE=y
# CONFIG_BLK_DEV_4DRIVES is not set
# CONFIG_BLK_DEV_ALI14XX is not set
+CONFIG_BLK_DEV_CS5536=y
# CONFIG_BLK_DEV_DTC2278 is not set
CONFIG_BLK_DEV_GENERIC=y
# CONFIG_BLK_DEV_HT6560B is not set
diff -Nur unpatched/target/linux/generic-2.6/patches-2.6.28/925-cs5536_ide_driver.patch trunk/target/linux/generic-2.6/patches-2.6.28/925-cs5536_ide_driver.patch
--- unpatched/target/linux/generic-2.6/patches-2.6.28/925-cs5536_ide_driver.patch 1970-01-01 01:00:00.0 +0100
+++ trunk/target/linux/generic-2.6/patches-2.6.28/925-cs5536_ide_driver.patch 2009-02-07 14:48:18.0 +0100
@@ -0,0 +1,347 @@
+diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
+index b1c6f68..3dad229 100644
+--- a/drivers/ide/Kconfig
b/drivers/ide/Kconfig
+@@ -465,6 +465,16 @@ config BLK_DEV_CS5535
+
+ It is safe to say Y to this question.
+
++config BLK_DEV_CS5536
++ tristate CS5536 chipset support
++ depends on X86_32
++ select BLK_DEV_IDEDMA_PCI
++ help
++ This option enables support for the AMD CS5536
++ companion chip used with the Geode LX processor family.
++
++ If unsure, say N.
++
+ config BLK_DEV_HPT366
+ tristate HPT36X/37X chipset support
+ select BLK_DEV_IDEDMA_PCI
+diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
+index c2b9c93..d0e3d7d 100644
+--- a/drivers/ide/Makefile
b/drivers/ide/Makefile
+@@ -43,6 +43,7 @@ obj-$(CONFIG_BLK_DEV_CMD64X) += cmd64x.o
+ obj-$(CONFIG_BLK_DEV_CS5520) += cs5520.o
+ obj-$(CONFIG_BLK_DEV_CS5530) += cs5530.o
+ obj-$(CONFIG_BLK_DEV_CS5535) += cs5535.o
++obj-$(CONFIG_BLK_DEV_CS5536) += cs5536.o
+ obj-$(CONFIG_BLK_DEV_SC1200) += sc1200.o
+ obj-$(CONFIG_BLK_DEV_CY82C693) += cy82c693.o
+ obj-$(CONFIG_BLK_DEV_DELKIN) += delkin_cb.o
+diff --git a/drivers/ide/cs5536.c b/drivers/ide/cs5536.c
+new file mode 100644
+index 000..7a62db7
+--- /dev/null
b/drivers/ide/cs5536.c
+@@ -0,0 +1,308 @@
++/*
++ * CS5536 PATA support
++ * (C) 2007 Martin K. Petersen m...@mkp.net
++ * (C) 2009 Bartlomiej Zolnierkiewicz
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ *
++ * Documentation:
++ * Available from AMD web site.
++ *
++ * The IDE timing registers for the CS5536 live in the Geode Machine
++ * Specific Register file and not PCI config space. Most BIOSes
++ * virtualize the PCI registers so the chip looks like a standard IDE
++ * controller. Unfortunately not all implementations get this right.
++ * In particular some have problems with unaligned accesses to the
++ * virtualized PCI registers. This driver always does full dword
++ * writes to work around the issue. Also, in case of a bad BIOS this
++ * driver can be loaded with the msr=1 parameter which forces using
++ * the Machine Specific Registers to configure the device.
++ */
++
++#include linux/kernel.h
++#include linux/module.h
++#include linux/pci.h
++#include linux/init.h
++#include linux/ide.h
++#include asm/msr.h
++
++#define DRV_NAME cs5536
++
++enum {
++ MSR_IDE_CFG = 0x51300010,
++ PCI_IDE_CFG = 0x40,
++
++ CFG = 0,
++ DTC = 2,
++ CAST = 3,
++ ETC = 4,
++
++ IDE_CFG_CHANEN = (1 1),
++ IDE_CFG_CABLE = (1 17) | (1 16),
++
++ IDE_D0_SHIFT = 24,
++ IDE_D1_SHIFT = 16,
++ IDE_DRV_MASK = 0xff,
++
++ IDE_CAST_D0_SHIFT = 6,
++ IDE_CAST_D1_SHIFT = 4,
++ IDE_CAST_DRV_MASK = 0x3,
++
++ IDE_CAST_CMD_SHIFT = 24,
++ IDE_CAST_CMD_MASK = 0xff,
++
++ IDE_ETC_UDMA_MASK = 0xc0,
++};
++
++static int use_msr;
++
++static int cs5536_read(struct pci_dev *pdev, int reg, u32 *val)
++{
++ if (unlikely(use_msr)) {
++ u32 dummy;
++
++ rdmsr(MSR_IDE_CFG + reg, *val, dummy);
++ return 0;
++ }
++
++ return
