Merge branch 'master' of git://git.denx.de/u-boot-arm

* 'master' of git://git.denx.de/u-boot-arm: (146 commits)
  arm: Use common .lds file where possible
  arm: add a common .lds link script
  arm: Remove unneeded setting of LDCSRIPT
  Define CPUDIR for the .lds link script
  arm: Remove zipitz2 link script
  Allow arch directory to contain .lds without requiring Makefile
  OMAP: Remove omap1610inn-based boards
  arch/arm/cpu/armv7/omap-common/clocks-common.c: Fix build warnings
  board/ti/beagle/beagle.c: Fix build warnings
  sdrc.c: Fix typo in do_sdrc_init() for SPL
  tegra: i2c: Add I2C driver
  tegra: fdt: i2c: Add extra I2C bindings for U-Boot
  tegra: i2c: Select I2C ordering for Seaboard
  tegra: i2c: Enable I2C on Seaboard
  tegra: i2c: Select number of controllers for Tegra2 boards
  tegra: i2c: Initialise I2C on Nvidia boards
  tegra: Enhance clock support to handle 16-bit clock divisors
  fdt: Add function to allow aliases to refer to multiple nodes
  tegra: Rename NV_PA_PMC_BASE to TEGRA2_PMC_BASE
  tegra: fdt: Enable FDT support for Ventana
  tegra: fdt: Enable FDT support for Seaboard
  tegra: usb: Enable USB on Seaboard
  tegra: usb: Add common USB defines for tegra2 boards
  tegra: usb: Add USB support to nvidia boards
  arm: Check for valid FDT after console is up
  fdt: Avoid early panic() when there is no FDT present
  tegra: usb: Add support for Tegra USB peripheral
  tegra: fdt: Add function to return peripheral/clock ID
  usb: Add support for txfifo threshold
  tegra: usb: fdt: Add USB definitions for Tegra2 Seaboard
  tegra: usb: fdt: Add additional device tree definitions for USB ports
  tegra: fdt: Add clock bindings for Tegra2 Seaboard
  tegra: fdt: Add clock bindings
  tegra: fdt: Add additional USB binding
  fdt: Add tegra-usb bindings file from linux
  fdt: Add staging area for device tree binding documentation
  tegra: fdt: Add device tree file for Tegra2 Seaboard from kernel
  tegra: fdt: Add Tegra2x device tree file from kernel
  arm: fdt: Add skeleton device tree file from kernel
  fdt: Add basic support for decoding GPIO definitions
  fdt: Add functions to access phandles, arrays and bools
  fdt: Tidy up a few fdtdec problems
  fdt: Add tests for fdtdec
  fdt: Add fdtdec_find_aliases() to deal with alias nodes
  arm: Tegra2: Fix ELDK42 gcc failure with inline asm stack pointer load
  net: fec_mxc: allow use with cache enabled
  net: force PKTALIGN to ARCH_DMA_MINALIGN
  i.MX28: Enable caches by default
  i.MX28: Make use of the bounce buffer
  i.MX28: Do data transfers via DMA in MMC driver
  MMC: Implement generic bounce buffer
  i.MX28: Add cache support to MXS NAND driver
  i.MX28: Add cache support into the APBH DMA driver
  ARM926EJS: Implement cache operations
  board/vpac270/onenand.c: Fix build errors
  nhk8815: fix build errors
  atmel-boards: add missing atmel_mci.h
  ARM: highbank: setup env from boot source register
  ARM: highbank: change env config to use nvram
  ARM: highbank: add reset support
  ARM: highbank: Add boot counter support
  ARM: highbank: change TEXT_BASE to 0x8000
  ARM: highbank: fix us_to_tick calculation
  ARM: highbank: add missing get_tbclk
  ARM: highbank: fix warning for calxedaxgmac_initialize
  net: calxedaxgmac: fix build due to missing __aligned definition
  EXYNOS: Add structure for Exynos4 DMC
  EXYNOS: SMDK5250: Support all 4 UARTs
  ARM: fix s3c2410 timer code
  ARM: davinci: fixes for cam_enc_4xx board
  omap3_spi: receive transmit mode
  calimain, enbw_cmc: Fix typo in comments
  Davinci: ea20: use gpio framework to access gpios
  OMAP3: mt_ventoux: sets its own mtdparts
  OMAP3: mt_ventoux: updated timing for FPGA
  twl4030: fix potential power supply handling issues
  NAND: TI: fix warnings in omap_gpmc.c
  cam_enc_4xx: Rename 'images' to 'imgs'
  arm: Add Prep subcommand support to bootm
  OMAP3: twister: add support to boot Linux from SPL
  SPL: call cleanup_before_linux() before booting Linux
  OMAP3: SPL: do not call I2C init if no I2C is set.
  Add cache functions to SPL for armv7
  devkit8000: Implement and activate direct OS boot
  omap/spl: change output of spl_parse_image_header
  omap-common/spl: Add linux boot to SPL
  devkit8000/spl: init GPMC for dm9000 in SPL
  omap-common: Add NAND SPL linux booting
  devkit8000: add config for spl command
  Add cmd_spl command
  mx53ard: Initialize return code with error
  mx53: Make PLL2 to be the parent of UART clock
  configs: imx: Use CONFIG_SF_DEFAULT_CS
  mx28evk: Provide default values for SPI bus and chip select
  USB: ehci-mx6: Add proper IO accessors
  mx6: Read silicon revision from register
  i.MX28: Drop __naked function from spl_mem_init
  mxs_spi: Return proper timeout error
  i.MX28: Make the stabilization delays shorter
  pmic_i2c: Return error in case of invalid pmic_i2c_tx_num
  mx6: Remove duplicate definition of ANATOP_BASE_ADDR
  mx6: Fix reset cause for Power On Reset case
  i.MX6: mx6qsabrelite: add MACH_TYPE_MX6Q_SABRELITE
  i.MX6: mx6q_sabrelite: add CONFIG_REVISION_TAG
  i.MX28: Enable additional DRAM address bits
  mx6q: mx6qsabrelite: setup_spi() should be called in board_init to allow use for environment
  mx31: add "ARM11P power gating" to get_reset_cause
  mx31pdk: Fix CONFIG_SYS_MEMTEST_END
  efikamx: Fix CONFIG_SYS_MEMTEST_END
  mx53smd: Fix CONFIG_SYS_MEMTEST_END
  mx53evk: Fix CONFIG_SYS_MEMTEST_END
  mx51evk: Fix CONFIG_SYS_MEMTEST_END
  i.MX6: mx6qsabrelite: add ext2 support
  imximage: Remove overwriting of flash_offset
  IXP: Fix GPIO_INT_ACT_LOW_SET()
  IXP: Fix NAND build warning on PDNB3 and SCPU
  IXP: Move PDNB3 and SCPU from Makefile to boards.cfg
  IXP: Squash warnings in IXP NPE
  IXP: Fix missing MACH_TYPE_{ACTUX?,PNB3,DVLHOST}
  IXP: Make IXP buildable with arm-linux- toolchains
  Examples: Properly append LDFLAGS to LD command
  SPL: Enable YMODEM support on BeagleBone and AM335x EVM
  SPL: Add YMODEM over UART load support
  SPL: Add README.omap3
  README: document more SPL config options
  spl.c: Use __noreturn decorator
  config.mk: Check for -fstack-usage support
  config.mk: Make cc-option create a file under include/generated
  ...

3 files changed, 193 insertions, 104 deletions

diff --git a/drivers/net/calxedaxgmac.c b/drivers/net/calxedaxgmac.c
index 01b2eee..00e26c2 100644
--- a/drivers/net/calxedaxgmac.c
+++ b/drivers/net/calxedaxgmac.c
@@ -16,6 +16,7 @@
  */
 #include <common.h>
 #include <malloc.h>
+#include <linux/compiler.h>
 #include <linux/err.h>
 #include <asm/io.h>
 
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 1fdd071..d8db9f0 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -38,16 +38,28 @@ DECLARE_GLOBAL_DATA_PTR;
 #error "CONFIG_MII has to be defined!"
 #endif
 
-#ifndef	CONFIG_FEC_XCV_TYPE
-#define	CONFIG_FEC_XCV_TYPE	MII100
+#ifndef CONFIG_FEC_XCV_TYPE
+#define CONFIG_FEC_XCV_TYPE MII100
 #endif
 
 /*
  * The i.MX28 operates with packets in big endian. We need to swap them before
  * sending and after receiving.
  */
-#ifdef	CONFIG_MX28
-#define	CONFIG_FEC_MXC_SWAP_PACKET
+#ifdef CONFIG_MX28
+#define CONFIG_FEC_MXC_SWAP_PACKET
+#endif
+
+#define RXDESC_PER_CACHELINE (ARCH_DMA_MINALIGN/sizeof(struct fec_bd))
+
+/* Check various alignment issues at compile time */
+#if ((ARCH_DMA_MINALIGN < 16) || (ARCH_DMA_MINALIGN % 16 != 0))
+#error "ARCH_DMA_MINALIGN must be multiple of 16!"
+#endif
+
+#if ((PKTALIGN < ARCH_DMA_MINALIGN) || \
+	(PKTALIGN % ARCH_DMA_MINALIGN != 0))
+#error "PKTALIGN must be multiple of ARCH_DMA_MINALIGN!"
 #endif
 
 #undef DEBUG
@@ -59,7 +71,7 @@ struct nbuf {
 	uint8_t head[16];	/**< MAC header(6 + 6 + 2) + 2(aligned) */
 };
 
-#ifdef	CONFIG_FEC_MXC_SWAP_PACKET
+#ifdef CONFIG_FEC_MXC_SWAP_PACKET
 static void swap_packet(uint32_t *packet, int length)
 {
 	int i;
@@ -259,43 +271,52 @@ static int fec_tx_task_disable(struct fec_priv *fec)
  * Initialize receive task's buffer descriptors
  * @param[in] fec all we know about the device yet
  * @param[in] count receive buffer count to be allocated
- * @param[in] size size of each receive buffer
+ * @param[in] dsize desired size of each receive buffer
  * @return 0 on success
  *
  * For this task we need additional memory for the data buffers. And each
  * data buffer requires some alignment. Thy must be aligned to a specific
- * boundary each (DB_DATA_ALIGNMENT).
+ * boundary each.
  */
-static int fec_rbd_init(struct fec_priv *fec, int count, int size)
+static int fec_rbd_init(struct fec_priv *fec, int count, int dsize)
 {
-	int ix;
-	uint32_t p = 0;
-
-	/* reserve data memory and consider alignment */
-	if (fec->rdb_ptr == NULL)
-		fec->rdb_ptr = malloc(size * count + DB_DATA_ALIGNMENT);
-	p = (uint32_t)fec->rdb_ptr;
-	if (!p) {
-		puts("fec_mxc: not enough malloc memory\n");
-		return -ENOMEM;
-	}
-	memset((void *)p, 0, size * count + DB_DATA_ALIGNMENT);
-	p += DB_DATA_ALIGNMENT-1;
-	p &= ~(DB_DATA_ALIGNMENT-1);
-
-	for (ix = 0; ix < count; ix++) {
-		writel(p, &fec->rbd_base[ix].data_pointer);
-		p += size;
-		writew(FEC_RBD_EMPTY, &fec->rbd_base[ix].status);
-		writew(0, &fec->rbd_base[ix].data_length);
-	}
+	uint32_t size;
+	int i;
+
 	/*
-	 * mark the last RBD to close the ring
+	 * Allocate memory for the buffers. This allocation respects the
+	 * alignment
 	 */
-	writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &fec->rbd_base[ix - 1].status);
+	size = roundup(dsize, ARCH_DMA_MINALIGN);
+	for (i = 0; i < count; i++) {
+		uint32_t data_ptr = readl(&fec->rbd_base[i].data_pointer);
+		if (data_ptr == 0) {
+			uint8_t *data = memalign(ARCH_DMA_MINALIGN,
+						 size);
+			if (!data) {
+				printf("%s: error allocating rxbuf %d\n",
+				       __func__, i);
+				goto err;
+			}
+			writel((uint32_t)data, &fec->rbd_base[i].data_pointer);
+		} /* needs allocation */
+		writew(FEC_RBD_EMPTY, &fec->rbd_base[i].status);
+		writew(0, &fec->rbd_base[i].data_length);
+	}
+
+	/* Mark the last RBD to close the ring. */
+	writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &fec->rbd_base[i - 1].status);
 	fec->rbd_index = 0;
 
 	return 0;
+
+err:
+	for (; i >= 0; i--) {
+		uint32_t data_ptr = readl(&fec->rbd_base[i].data_pointer);
+		free((void *)data_ptr);
+	}
+
+	return -ENOMEM;
 }
 
 /**
@@ -312,9 +333,13 @@ static int fec_rbd_init(struct fec_priv *fec, int count, int size)
  */
 static void fec_tbd_init(struct fec_priv *fec)
 {
+	unsigned addr = (unsigned)fec->tbd_base;
+	unsigned size = roundup(2 * sizeof(struct fec_bd),
+				ARCH_DMA_MINALIGN);
 	writew(0x0000, &fec->tbd_base[0].status);
 	writew(FEC_TBD_WRAP, &fec->tbd_base[1].status);
 	fec->tbd_index = 0;
+	flush_dcache_range(addr, addr+size);
 }
 
 /**
@@ -324,16 +349,10 @@ static void fec_tbd_init(struct fec_priv *fec)
  */
 static void fec_rbd_clean(int last, struct fec_bd *pRbd)
 {
-	/*
-	 * Reset buffer descriptor as empty
-	 */
+	unsigned short flags = FEC_RBD_EMPTY;
 	if (last)
-		writew(FEC_RBD_WRAP | FEC_RBD_EMPTY, &pRbd->status);
-	else
-		writew(FEC_RBD_EMPTY, &pRbd->status);
-	/*
-	 * no data in it
-	 */
+		flags |= FEC_RBD_WRAP;
+	writew(flags, &pRbd->status);
 	writew(0, &pRbd->data_length);
 }
 
@@ -387,12 +406,25 @@ static int fec_open(struct eth_device *edev)
 {
 	struct fec_priv *fec = (struct fec_priv *)edev->priv;
 	int speed;
+	uint32_t addr, size;
+	int i;
 
 	debug("fec_open: fec_open(dev)\n");
 	/* full-duplex, heartbeat disabled */
 	writel(1 << 2, &fec->eth->x_cntrl);
 	fec->rbd_index = 0;
 
+	/* Invalidate all descriptors */
+	for (i = 0; i < FEC_RBD_NUM - 1; i++)
+		fec_rbd_clean(0, &fec->rbd_base[i]);
+	fec_rbd_clean(1, &fec->rbd_base[i]);
+
+	/* Flush the descriptors into RAM */
+	size = roundup(FEC_RBD_NUM * sizeof(struct fec_bd),
+			ARCH_DMA_MINALIGN);
+	addr = (uint32_t)fec->rbd_base;
+	flush_dcache_range(addr, addr + size);
+
 #ifdef FEC_QUIRK_ENET_MAC
 	/* Enable ENET HW endian SWAP */
 	writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_DBSWAP,
@@ -478,38 +510,55 @@ static int fec_open(struct eth_device *edev)
 
 static int fec_init(struct eth_device *dev, bd_t* bd)
 {
-	uint32_t base;
 	struct fec_priv *fec = (struct fec_priv *)dev->priv;
 	uint32_t mib_ptr = (uint32_t)&fec->eth->rmon_t_drop;
 	uint32_t rcntrl;
-	int i;
+	uint32_t size;
+	int i, ret;
 
 	/* Initialize MAC address */
 	fec_set_hwaddr(dev);
 
 	/*
-	 * reserve memory for both buffer descriptor chains at once
-	 * Datasheet forces the startaddress of each chain is 16 byte
-	 * aligned
+	 * Allocate transmit descriptors, there are two in total. This
+	 * allocation respects cache alignment.
 	 */
-	if (fec->base_ptr == NULL)
-		fec->base_ptr = malloc((2 + FEC_RBD_NUM) *
-				sizeof(struct fec_bd) + DB_ALIGNMENT);
-	base = (uint32_t)fec->base_ptr;
-	if (!base) {
-		puts("fec_mxc: not enough malloc memory\n");
-		return -ENOMEM;
+	if (!fec->tbd_base) {
+		size = roundup(2 * sizeof(struct fec_bd),
+				ARCH_DMA_MINALIGN);
+		fec->tbd_base = memalign(ARCH_DMA_MINALIGN, size);
+		if (!fec->tbd_base) {
+			ret = -ENOMEM;
+			goto err1;
+		}
+		memset(fec->tbd_base, 0, size);
+		fec_tbd_init(fec);
+		flush_dcache_range((unsigned)fec->tbd_base, size);
 	}
-	memset((void *)base, 0, (2 + FEC_RBD_NUM) *
-			sizeof(struct fec_bd) + DB_ALIGNMENT);
-	base += (DB_ALIGNMENT-1);
-	base &= ~(DB_ALIGNMENT-1);
-
-	fec->rbd_base = (struct fec_bd *)base;
 
-	base += FEC_RBD_NUM * sizeof(struct fec_bd);
-
-	fec->tbd_base = (struct fec_bd *)base;
+	/*
+	 * Allocate receive descriptors. This allocation respects cache
+	 * alignment.
+	 */
+	if (!fec->rbd_base) {
+		size = roundup(FEC_RBD_NUM * sizeof(struct fec_bd),
+				ARCH_DMA_MINALIGN);
+		fec->rbd_base = memalign(ARCH_DMA_MINALIGN, size);
+		if (!fec->rbd_base) {
+			ret = -ENOMEM;
+			goto err2;
+		}
+		memset(fec->rbd_base, 0, size);
+		/*
+		 * Initialize RxBD ring
+		 */
+		if (fec_rbd_init(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE) < 0) {
+			ret = -ENOMEM;
+			goto err3;
+		}
+		flush_dcache_range((unsigned)fec->rbd_base,
+				   (unsigned)fec->rbd_base + size);
+	}
 
 	/*
 	 * Set interrupt mask register
@@ -566,23 +615,19 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
 	writel((uint32_t)fec->tbd_base, &fec->eth->etdsr);
 	writel((uint32_t)fec->rbd_base, &fec->eth->erdsr);
 
-	/*
-	 * Initialize RxBD/TxBD rings
-	 */
-	if (fec_rbd_init(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE) < 0) {
-		free(fec->base_ptr);
-		fec->base_ptr = NULL;
-		return -ENOMEM;
-	}
-	fec_tbd_init(fec);
-
-
 #ifndef CONFIG_PHYLIB
 	if (fec->xcv_type != SEVENWIRE)
 		miiphy_restart_aneg(dev);
 #endif
 	fec_open(dev);
 	return 0;
+
+err3:
+	free(fec->rbd_base);
+err2:
+	free(fec->tbd_base);
+err1:
+	return ret;
 }
 
 /**
@@ -631,9 +676,11 @@ static void fec_halt(struct eth_device *dev)
  * @param[in] length Data count in bytes
  * @return 0 on success
  */
-static int fec_send(struct eth_device *dev, volatile void* packet, int length)
+static int fec_send(struct eth_device *dev, volatile void *packet, int length)
 {
 	unsigned int status;
+	uint32_t size;
+	uint32_t addr;
 
 	/*
 	 * This routine transmits one frame.  This routine only accepts
@@ -650,15 +697,21 @@ static int fec_send(struct eth_device *dev, volatile void* packet, int length)
 	}
 
 	/*
-	 * Setup the transmit buffer
-	 * Note: We are always using the first buffer for transmission,
-	 * the second will be empty and only used to stop the DMA engine
+	 * Setup the transmit buffer. We are always using the first buffer for
+	 * transmission, the second will be empty and only used to stop the DMA
+	 * engine. We also flush the packet to RAM here to avoid cache trouble.
 	 */
-#ifdef	CONFIG_FEC_MXC_SWAP_PACKET
+#ifdef CONFIG_FEC_MXC_SWAP_PACKET
 	swap_packet((uint32_t *)packet, length);
 #endif
+
+	addr = (uint32_t)packet;
+	size = roundup(length, ARCH_DMA_MINALIGN);
+	flush_dcache_range(addr, addr + size);
+
 	writew(length, &fec->tbd_base[fec->tbd_index].data_length);
-	writel((uint32_t)packet, &fec->tbd_base[fec->tbd_index].data_pointer);
+	writel(addr, &fec->tbd_base[fec->tbd_index].data_pointer);
+
 	/*
 	 * update BD's status now
 	 * This block:
@@ -672,16 +725,30 @@ static int fec_send(struct eth_device *dev, volatile void* packet, int length)
 	writew(status, &fec->tbd_base[fec->tbd_index].status);
 
 	/*
+	 * Flush data cache. This code flushes both TX descriptors to RAM.
+	 * After this code, the descriptors will be safely in RAM and we
+	 * can start DMA.
+	 */
+	size = roundup(2 * sizeof(struct fec_bd), ARCH_DMA_MINALIGN);
+	addr = (uint32_t)fec->tbd_base;
+	flush_dcache_range(addr, addr + size);
+
+	/*
 	 * Enable SmartDMA transmit task
 	 */
 	fec_tx_task_enable(fec);
 
 	/*
-	 * wait until frame is sent .
+	 * Wait until frame is sent. On each turn of the wait cycle, we must
+	 * invalidate data cache to see what's really in RAM. Also, we need
+	 * barrier here.
 	 */
+	invalidate_dcache_range(addr, addr + size);
 	while (readw(&fec->tbd_base[fec->tbd_index].status) & FEC_TBD_READY) {
 		udelay(1);
+		invalidate_dcache_range(addr, addr + size);
 	}
+
 	debug("fec_send: status 0x%x index %d\n",
 			readw(&fec->tbd_base[fec->tbd_index].status),
 			fec->tbd_index);
@@ -707,6 +774,8 @@ static int fec_recv(struct eth_device *dev)
 	int frame_length, len = 0;
 	struct nbuf *frame;
 	uint16_t bd_status;
+	uint32_t addr, size;
+	int i;
 	uchar buff[FEC_MAX_PKT_SIZE];
 
 	/*
@@ -737,8 +806,23 @@ static int fec_recv(struct eth_device *dev)
 	}
 
 	/*
-	 * ensure reading the right buffer status
+	 * Read the buffer status. Before the status can be read, the data cache
+	 * must be invalidated, because the data in RAM might have been changed
+	 * by DMA. The descriptors are properly aligned to cachelines so there's
+	 * no need to worry they'd overlap.
+	 *
+	 * WARNING: By invalidating the descriptor here, we also invalidate
+	 * the descriptors surrounding this one. Therefore we can NOT change the
+	 * contents of this descriptor nor the surrounding ones. The problem is
+	 * that in order to mark the descriptor as processed, we need to change
+	 * the descriptor. The solution is to mark the whole cache line when all
+	 * descriptors in the cache line are processed.
 	 */
+	addr = (uint32_t)rbd;
+	addr &= ~(ARCH_DMA_MINALIGN - 1);
+	size = roundup(sizeof(struct fec_bd), ARCH_DMA_MINALIGN);
+	invalidate_dcache_range(addr, addr + size);
+
 	bd_status = readw(&rbd->status);
 	debug("fec_recv: status 0x%x\n", bd_status);
 
@@ -751,9 +835,16 @@ static int fec_recv(struct eth_device *dev)
 			frame = (struct nbuf *)readl(&rbd->data_pointer);
 			frame_length = readw(&rbd->data_length) - 4;
 			/*
+			 * Invalidate data cache over the buffer
+			 */
+			addr = (uint32_t)frame;
+			size = roundup(frame_length, ARCH_DMA_MINALIGN);
+			invalidate_dcache_range(addr, addr + size);
+
+			/*
 			 *  Fill the buffer and pass it to upper layers
 			 */
-#ifdef	CONFIG_FEC_MXC_SWAP_PACKET
+#ifdef CONFIG_FEC_MXC_SWAP_PACKET
 			swap_packet((uint32_t *)frame->data, frame_length);
 #endif
 			memcpy(buff, frame->data, frame_length);
@@ -765,11 +856,25 @@ static int fec_recv(struct eth_device *dev)
 						(ulong)rbd->data_pointer,
 						bd_status);
 		}
+
 		/*
-		 * free the current buffer, restart the engine
-		 * and move forward to the next buffer
+		 * Free the current buffer, restart the engine and move forward
+		 * to the next buffer. Here we check if the whole cacheline of
+		 * descriptors was already processed and if so, we mark it free
+		 * as whole.
 		 */
-		fec_rbd_clean(fec->rbd_index == (FEC_RBD_NUM - 1) ? 1 : 0, rbd);
+		size = RXDESC_PER_CACHELINE - 1;
+		if ((fec->rbd_index & size) == size) {
+			i = fec->rbd_index - size;
+			addr = (uint32_t)&fec->rbd_base[i];
+			for (; i <= fec->rbd_index ; i++) {
+				fec_rbd_clean(i == (FEC_RBD_NUM - 1),
+					      &fec->rbd_base[i]);
+			}
+			flush_dcache_range(addr,
+				addr + ARCH_DMA_MINALIGN);
+		}
+
 		fec_rx_task_enable(fec);
 		fec->rbd_index = (fec->rbd_index + 1) % FEC_RBD_NUM;
 	}
@@ -866,7 +971,7 @@ static int fec_probe(bd_t *bd, int dev_id, int phy_id, uint32_t base_addr)
 	bus->read = fec_phy_read;
 	bus->write = fec_phy_write;
 	sprintf(bus->name, edev->name);
-#ifdef	CONFIG_MX28
+#ifdef CONFIG_MX28
 	/*
 	 * The i.MX28 has two ethernet interfaces, but they are not equal.
 	 * Only the first one can access the MDIO bus.
@@ -901,7 +1006,7 @@ err1:
 	return ret;
 }
 
-#ifndef	CONFIG_FEC_MXC_MULTI
+#ifndef CONFIG_FEC_MXC_MULTI
 int fecmxc_initialize(bd_t *bd)
 {
 	int lout = 1;
diff --git a/drivers/net/fec_mxc.h b/drivers/net/fec_mxc.h
index 2eb7803..852b2e0 100644
--- a/drivers/net/fec_mxc.h
+++ b/drivers/net/fec_mxc.h
@@ -234,22 +234,6 @@ struct ethernet_regs {
 #endif
 
 /**
- * @brief Descriptor buffer alignment
- *
- * i.MX27 requires a 16 byte alignment (but for the first element only)
- */
-#define DB_ALIGNMENT		16
-
-/**
- * @brief Data buffer alignment
- *
- * i.MX27 requires a four byte alignment for transmit and 16 bits
- * alignment for receive so take 16
- * Note: Valid for member data_pointer in struct buffer_descriptor
- */
-#define DB_DATA_ALIGNMENT	16
-
-/**
  * @brief Receive & Transmit Buffer Descriptor definitions
  *
  * Note: The first BD must be aligned (see DB_ALIGNMENT)
@@ -282,8 +266,7 @@ struct fec_priv {
 	struct fec_bd *tbd_base;	/* TBD ring */
 	int tbd_index;			/* next transmit BD to write */
 	bd_t *bd;
-	void *rdb_ptr;
-	void *base_ptr;
+	uint8_t *tdb_ptr;
 	int dev_id;
 	int phy_id;
 	struct mii_dev *bus;