Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'

8 files changed, 35 insertions, 13 deletions

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index da95e285b..ec5b9db66 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -560,7 +560,6 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
 		}
 		memset(fec->tbd_base, 0, size);
 		fec_tbd_init(fec);
-		flush_dcache_range((unsigned)fec->tbd_base, size);
 	}
 
 	/*
@@ -738,6 +737,28 @@ static int fec_send(struct eth_device *dev, void *packet, int length)
 	flush_dcache_range(addr, addr + size);
 
 	/*
+	 * Below we read the DMA descriptor's last four bytes back from the
+	 * DRAM. This is important in order to make sure that all WRITE
+	 * operations on the bus that were triggered by previous cache FLUSH
+	 * have completed.
+	 *
+	 * Otherwise, on MX28, it is possible to observe a corruption of the
+	 * DMA descriptors. Please refer to schematic "Figure 1-2" in MX28RM
+	 * for the bus structure of MX28. The scenario is as follows:
+	 *
+	 * 1) ARM core triggers a series of WRITEs on the AHB_ARB2 bus going
+	 *    to DRAM due to flush_dcache_range()
+	 * 2) ARM core writes the FEC registers via AHB_ARB2
+	 * 3) FEC DMA starts reading/writing from/to DRAM via AHB_ARB3
+	 *
+	 * Note that 2) does sometimes finish before 1) due to reordering of
+	 * WRITE accesses on the AHB bus, therefore triggering 3) before the
+	 * DMA descriptor is fully written into DRAM. This results in occasional
+	 * corruption of the DMA descriptor.
+	 */
+	readl(addr + size - 4);
+
+	/*
 	 * Enable SmartDMA transmit task
 	 */
 	fec_tx_task_enable(fec);
diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h
index 5b3fa43eb..10ccc3bc3 100644
--- a/include/configs/m28evk.h
+++ b/include/configs/m28evk.h
@@ -70,6 +70,7 @@
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_MMC
 #define CONFIG_CMD_NAND
+#define CONFIG_CMD_NAND_TRIMFFS
 #define CONFIG_CMD_NET
 #define CONFIG_CMD_NFS
 #define CONFIG_CMD_PING
diff --git a/include/configs/mx51evk.h b/include/configs/mx51evk.h
index 13d1839eb..4383375d0 100644
--- a/include/configs/mx51evk.h
+++ b/include/configs/mx51evk.h
@@ -162,8 +162,8 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=0\0" \
-	"mmcpart=2\0" \
-	"mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
+	"mmcpart=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
 	"mmcargs=setenv bootargs console=ttymxc0,${baudrate} " \
 		"root=${mmcroot}\0" \
 	"loadbootscript=" \
diff --git a/include/configs/mx53ard.h b/include/configs/mx53ard.h
index b0a965fbb..fa160e415 100644
--- a/include/configs/mx53ard.h
+++ b/include/configs/mx53ard.h
@@ -118,8 +118,8 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
-	"mmcpart=2\0" \
-	"mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
+	"mmcpart=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
 	"update_sd_firmware_filename=u-boot.imx\0" \
 	"update_sd_firmware=" \
 		"if test ${ip_dyn} = yes; then " \
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index a4b610f9b..cc31e9b4e 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -124,8 +124,8 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=0\0" \
-	"mmcpart=2\0" \
-	"mmcroot=/dev/mmcblk0p3 rw rootwait\0" \
+	"mmcpart=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rw rootwait\0" \
 	"mmcargs=setenv bootargs console=ttymxc0,${baudrate} root=${mmcroot}\0" \
 	"loadbootscript=" \
 		"fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \
diff --git a/include/configs/mx6qsabrelite.h b/include/configs/mx6qsabrelite.h
index b81441848..c7db81d0d 100644
--- a/include/configs/mx6qsabrelite.h
+++ b/include/configs/mx6qsabrelite.h
@@ -170,8 +170,8 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=0\0" \
-	"mmcpart=2\0" \
-	"mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
+	"mmcpart=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
 	"mmcargs=setenv bootargs console=${console},${baudrate} " \
 		"root=${mmcroot}\0" \
 	"loadbootscript=" \
diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
index 19dcdd605..55e3ad97a 100644
--- a/include/configs/mx6slevk.h
+++ b/include/configs/mx6slevk.h
@@ -73,8 +73,8 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=0\0" \
-	"mmcpart=2\0" \
-	"mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
+	"mmcpart=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
 	"mmcargs=setenv bootargs console=${console},${baudrate} " \
 		"root=${mmcroot}\0" \
 	"loadbootscript=" \
diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h
index b2995d8ea..ee6bf216b 100644
--- a/include/configs/wandboard.h
+++ b/include/configs/wandboard.h
@@ -120,8 +120,8 @@
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
 	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
-	"mmcpart=2\0" \
-	"mmcroot=/dev/mmcblk0p3 rootwait rw\0" \
+	"mmcpart=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
 	"update_sd_firmware_filename=u-boot.imx\0" \
 	"update_sd_firmware=" \
 		"if test ${ip_dyn} = yes; then " \