[rb532] add 2.6.28 patches and kernel config

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14884 3c298f89-4303-0410-b956-a3cf2f4a3e73

24 files changed, 984 insertions, 0 deletions

diff --git a/target/linux/rb532/patches-2.6.28/002-pci_io_map_base.patch b/target/linux/rb532/patches-2.6.28/002-pci_io_map_base.patch
new file mode 100644
index 000000000..5786803e4
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/002-pci_io_map_base.patch
@@ -0,0 +1,42 @@
+The code is rather based on trial-and-error than knowledge. Verified Via
+Rhine functionality in PIO as well as MMIO mode.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+Tested-by: Florian Fainelli <florian@openwrt.org>
+---
+ arch/mips/pci/pci-rc32434.c |   11 +++++++++++
+ 1 files changed, 11 insertions(+), 0 deletions(-)
+
+diff --git a/arch/mips/pci/pci-rc32434.c b/arch/mips/pci/pci-rc32434.c
+index 1c2821e..71f7d27 100644
+--- a/arch/mips/pci/pci-rc32434.c
++++ b/arch/mips/pci/pci-rc32434.c
+@@ -205,6 +205,8 @@ static int __init rc32434_pcibridge_init(void)
+ 
+ static int __init rc32434_pci_init(void)
+ {
++	void __iomem *io_map_base;
++
+ 	pr_info("PCI: Initializing PCI\n");
+ 
+ 	ioport_resource.start = rc32434_res_pci_io1.start;
+@@ -212,6 +214,15 @@ static int __init rc32434_pci_init(void)
+ 
+ 	rc32434_pcibridge_init();
+ 
++	io_map_base = ioremap(rc32434_res_pci_io1.start,
++		rc32434_res_pci_io1.end - rc32434_res_pci_io1.start + 1);
++
++	if (!io_map_base)
++		return -ENOMEM;
++
++	rc32434_controller.io_map_base =
++		(unsigned long)io_map_base - rc32434_res_pci_io1.start;
++
+ 	register_pci_controller(&rc32434_controller);
+ 	rc32434_sync();
+ 
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/003-gpio_bit_setting.patch b/target/linux/rb532/patches-2.6.28/003-gpio_bit_setting.patch
new file mode 100644
index 000000000..49f9f4b3b
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/003-gpio_bit_setting.patch
@@ -0,0 +1,35 @@
+The algorithm works unconditionally. If bitval is one, the first line is
+a no op and the second line sets the bit at offset position. Vice versa,
+if bitval is zero, the first line clears the bit at offset position and
+the second line is a no op.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ arch/mips/rb532/gpio.c |    6 ++----
+ 1 files changed, 2 insertions(+), 4 deletions(-)
+
+diff --git a/arch/mips/rb532/gpio.c b/arch/mips/rb532/gpio.c
+index 0e84c8a..e35cb75 100644
+--- a/arch/mips/rb532/gpio.c
++++ b/arch/mips/rb532/gpio.c
+@@ -119,13 +119,11 @@ static inline void rb532_set_bit(unsigned bitval,
+ 	unsigned long flags;
+ 	u32 val;
+ 
+-	bitval = !!bitval;              /* map parameter to {0,1} */
+-
+ 	local_irq_save(flags);
+ 
+ 	val = readl(ioaddr);
+-	val &= ~( ~bitval << offset );   /* unset bit if bitval == 0 */
+-	val |=  (  bitval << offset );   /* set bit if bitval == 1 */
++	val &= ~(!bitval << offset);   /* unset bit if bitval == 0 */
++	val |= (!!bitval << offset);   /* set bit if bitval == 1 */
+ 	writel(val, ioaddr);
+ 
+ 	local_irq_restore(flags);
+-- 
+1.5.6.4
+
+
+
diff --git a/target/linux/rb532/patches-2.6.28/004-fix_pata_rb532_cf.patch b/target/linux/rb532/patches-2.6.28/004-fix_pata_rb532_cf.patch
new file mode 100644
index 000000000..d1d73ac9c
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/004-fix_pata_rb532_cf.patch
@@ -0,0 +1,52 @@
+After applying the following changes I could verify functionality by
+mounting a filesystem on the cfdisk and reading/writing files in it.
+
+The set_irq_type() function must be wrong, as there is no set_type()
+function defined for the rb532 IRQ chip. But as the used IRQ actually is
+being triggered by a GPIO, setting it's interrupt level should be the
+right alternative. Also to clear a GPIO triggered IRQ, the source has to
+be cleared. This is being done at the end of rb532_pata_irq_handler.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+Acked-by: Florian Fainelli <florian@openwrt.org>
+---
+diff -urN linux-2.6.28.7/drivers/ata/pata_rb532_cf.c linux-2.6.28.7.new/drivers/ata/pata_rb532_cf.c
+--- linux-2.6.28.7/drivers/ata/pata_rb532_cf.c	2009-02-20 23:41:27.000000000 +0100
++++ linux-2.6.28.7.new/drivers/ata/pata_rb532_cf.c	2009-03-15 13:21:06.000000000 +0100
+@@ -31,6 +31,7 @@
+ #include <scsi/scsi_host.h>
+ 
+ #include <asm/gpio.h>
++#include <asm/mach-rc32434/gpio.h>
+ 
+ #define DRV_NAME	"pata-rb532-cf"
+ #define DRV_VERSION	"0.1.0"
+@@ -63,8 +64,8 @@
+ 	   ata_sff_sync might be sufficient. */
+ 	ata_sff_dma_pause(ap);
+ 	ndelay(RB500_CF_IO_DELAY);
+-
+-	set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH);
++	
++	rb532_gpio_set_ilevel(1, info->gpio_line);
+ }
+ 
+ static void rb532_pata_exec_command(struct ata_port *ap,
+@@ -113,13 +114,15 @@
+ 	struct rb532_cf_info *info = ah->private_data;
+ 
+ 	if (gpio_get_value(info->gpio_line)) {
+-		set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW);
++		rb532_gpio_set_ilevel(0, info->gpio_line);
+ 		if (!info->frozen)
+ 			ata_sff_interrupt(info->irq, dev_instance);
+ 	} else {
+-		set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH);
++		rb532_gpio_set_ilevel(1, info->gpio_line);
+ 	}
+ 
++	rb532_gpio_set_istat(0, info->gpio_line);
++
+ 	return IRQ_HANDLED;
+ }
+ 
diff --git a/target/linux/rb532/patches-2.6.28/005-pata_rb532_cf_4bytes_rw.patch b/target/linux/rb532/patches-2.6.28/005-pata_rb532_cf_4bytes_rw.patch
new file mode 100644
index 000000000..1af14ad6f
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/005-pata_rb532_cf_4bytes_rw.patch
@@ -0,0 +1,33 @@
+* rename the offset definition to avoid abiguity with the standard ATA
+  IO address
+* read and write four bytes at once like the original driver does
+* use writesl() and readsl() which implicitly iterate over the data
+
+This patch assumes buflen to be a multiple of four, which is true for
+ATA devices. ATAPI support is not known, though unlikely, as the
+original driver always transfers 512 Bytes at once.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+Acked-by: Sergei Shtyltov <sshtylyov@ru.mvista.com>
+---
+diff -urN linux-2.6.28.7/drivers/ata/pata_rb532_cf.c linux-2.6.28.7.new/drivers/ata/pata_rb532_cf.c
+--- linux-2.6.28.7/drivers/ata/pata_rb532_cf.c	2009-03-15 13:24:24.000000000 +0100
++++ linux-2.6.28.7.new/drivers/ata/pata_rb532_cf.c	2009-03-15 13:26:19.000000000 +0100
+@@ -82,13 +82,10 @@
+ 	void __iomem *ioaddr = ap->ioaddr.data_addr;
+ 	int retlen = buflen;
+ 
+-	if (write_data) {
+-		for (; buflen > 0; buflen--, buf++)
+-			writeb(*buf, ioaddr);
+-	} else {
+-		for (; buflen > 0; buflen--, buf++)
+-			*buf = readb(ioaddr);
+-	}
++	if (write_data)
++		writesl(ioaddr, buf, buflen / sizeof(u32));
++	else
++		readsl(ioaddr, buf, buflen / sizeof(u32));
+ 
+ 	rb532_pata_finish_io(adev->link->ap);
+ 	return retlen;
diff --git a/target/linux/rb532/patches-2.6.28/006-pata_rb532_cf_fix_prototype.patch b/target/linux/rb532/patches-2.6.28/006-pata_rb532_cf_fix_prototype.patch
new file mode 100644
index 000000000..7a25bcb68
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/006-pata_rb532_cf_fix_prototype.patch
@@ -0,0 +1,19 @@
+Per definition, this function should return the number of bytes
+consumed. Also take care of the unlikely case when buflen is not a
+multiple of four; while transferring, the division cuts the remaining
+bytes, so alter the return value accordingly.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+diff -urN linux-2.6.28.7/drivers/ata/pata_rb532_cf.c linux-2.6.28.7.new/drivers/ata/pata_rb532_cf.c
+--- linux-2.6.28.7/drivers/ata/pata_rb532_cf.c	2009-03-15 13:29:09.000000000 +0100
++++ linux-2.6.28.7.new/drivers/ata/pata_rb532_cf.c	2009-03-15 13:29:46.000000000 +0100
+@@ -88,7 +88,7 @@
+ 		readsl(ioaddr, buf, buflen / sizeof(u32));
+ 
+ 	rb532_pata_finish_io(adev->link->ap);
+-	return retlen;
++	return buflen - (buflen % sizeof(u32));;
+ }
+ 
+ static void rb532_pata_freeze(struct ata_port *ap)
diff --git a/target/linux/rb532/patches-2.6.28/007-cmdline_hack.patch b/target/linux/rb532/patches-2.6.28/007-cmdline_hack.patch
new file mode 100644
index 000000000..5f2ed2f2f
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/007-cmdline_hack.patch
@@ -0,0 +1,15 @@
+diff -urN linux-2.6.27.5/arch/mips/kernel/head.S linux-2.6.27.5.new/arch/mips/kernel/head.S
+--- linux-2.6.27.5/arch/mips/kernel/head.S	2008-11-15 19:24:03.000000000 +0100
++++ linux-2.6.27.5.new/arch/mips/kernel/head.S	2008-11-15 19:24:55.000000000 +0100
+@@ -123,6 +123,11 @@
+ 
+ 	j kernel_entry
+ 	nop
++
++
++EXPORT(_image_cmdline)
++	.ascii "CMDLINE:"
++
+ #ifndef CONFIG_NO_EXCEPT_FILL
+ 	/*
+ 	 * Reserved space for exception handlers.
diff --git a/target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch b/target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch
new file mode 100644
index 000000000..1db2e0ecb
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch
@@ -0,0 +1,31 @@
+The new value is the one used in the external patch before and allows at
+least a standard MTU of 1500 to be handled correctly. Impact of this
+change gets visible when bigger packets are to be received, issuing:
+| ping -s 492 <IP>
+and bigger payload sized led to 100% packet loss.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    5 ++++-
+ 1 files changed, 4 insertions(+), 1 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index fefb33d..e30c2f4 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -84,7 +84,10 @@
+ #define KORINA_NUM_RDS	64  /* number of receive descriptors */
+ #define KORINA_NUM_TDS	64  /* number of transmit descriptors */
+ 
+-#define KORINA_RBSIZE	536 /* size of one resource buffer = Ether MTU */
++/* KORINA_RBSIZE is the hardware's default maximum receive
++ * frame size in bytes. Having this hardcoded means that there
++ * is no support for MTU sizes greater than 1500. */
++#define KORINA_RBSIZE	1536 /* size of one resource buffer = Ether MTU */
+ #define KORINA_RDS_MASK	(KORINA_NUM_RDS - 1)
+ #define KORINA_TDS_MASK	(KORINA_NUM_TDS - 1)
+ #define RD_RING_SIZE 	(KORINA_NUM_RDS * sizeof(struct dma_desc))
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/009-korina_disable_napi_on_close_and_restart.patch b/target/linux/rb532/patches-2.6.28/009-korina_disable_napi_on_close_and_restart.patch
new file mode 100644
index 000000000..4eec6fd05
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/009-korina_disable_napi_on_close_and_restart.patch
@@ -0,0 +1,33 @@
+Without this the driver will crash when the NIC is being restarted.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    4 ++++
+ 1 files changed, 4 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index e30c2f4..65b8487 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -904,6 +904,8 @@ static int korina_restart(struct net_device *dev)
+ 
+ 	korina_free_ring(dev);
+ 
++	napi_disable(&lp->napi);
++
+ 	ret = korina_init(dev);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR DRV_NAME "%s: cannot restart device\n",
+@@ -1070,6 +1072,8 @@ static int korina_close(struct net_device *dev)
+ 
+ 	korina_free_ring(dev);
+ 
++	napi_disable(&lp->napi);
++
+ 	free_irq(lp->rx_irq, dev);
+ 	free_irq(lp->tx_irq, dev);
+ 	free_irq(lp->ovr_irq, dev);
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch b/target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch
new file mode 100644
index 000000000..177678b98
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch
@@ -0,0 +1,138 @@
+This function needs an early exit condition to function properly, or
+else caller assumes napi workload wasn't enough to handle all received
+packets and korina_rx is called again (and again and again and ...).
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+--- a/drivers/net/korina.c	2009-01-19 23:19:10.000000000 +0100
++++ b/drivers/net/korina.c	2009-01-19 23:25:31.000000000 +0100
+@@ -353,15 +353,20 @@
+ 	struct dma_desc *rd = &lp->rd_ring[lp->rx_next_done];
+ 	struct sk_buff *skb, *skb_new;
+ 	u8 *pkt_buf;
+-	u32 devcs, pkt_len, dmas, rx_free_desc;
++	u32 devcs, pkt_len, dmas;
+ 	int count;
+ 
+ 	dma_cache_inv((u32)rd, sizeof(*rd));
+ 
+ 	for (count = 0; count < limit; count++) {
++		skb = lp->rx_skb[lp->rx_next_done];
++		skb_new = NULL;
+ 
+ 		devcs = rd->devcs;
+ 
++		if ((KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) == 0)
++			break;
++
+ 		/* Update statistics counters */
+ 		if (devcs & ETH_RX_CRC)
+ 			dev->stats.rx_crc_errors++;
+@@ -384,64 +389,53 @@
+ 			 * in Rc32434 (errata ref #077) */
+ 			dev->stats.rx_errors++;
+ 			dev->stats.rx_dropped++;
+-		}
+-
+-		while ((rx_free_desc = KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) != 0) {
+-			/* init the var. used for the later
+-			 * operations within the while loop */
+-			skb_new = NULL;
++		} else if ((devcs & ETH_RX_ROK)) {
+ 			pkt_len = RCVPKT_LENGTH(devcs);
+-			skb = lp->rx_skb[lp->rx_next_done];
++			/* must be the (first and) last
++			 * descriptor then */
++			pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data;
++
++			/* invalidate the cache */
++			dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4);
++
++			/* Malloc up new buffer. */
++			skb_new = netdev_alloc_skb(dev, KORINA_RBSIZE + 2);
++
++			if (!skb_new)
++				break;
++			/* Do not count the CRC */
++			skb_put(skb, pkt_len - 4);
++			skb->protocol = eth_type_trans(skb, dev);
++
++			/* Pass the packet to upper layers */
++			netif_receive_skb(skb);
++			dev->stats.rx_packets++;
++			dev->stats.rx_bytes += pkt_len;
++
++			/* Update the mcast stats */
++			if (devcs & ETH_RX_MP)
++				dev->stats.multicast++;
+ 
+-			if ((devcs & ETH_RX_ROK)) {
+-				/* must be the (first and) last
+-				 * descriptor then */
+-				pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data;
+-
+-				/* invalidate the cache */
+-				dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4);
+-
+-				/* Malloc up new buffer. */
+-				skb_new = netdev_alloc_skb(dev, KORINA_RBSIZE + 2);
+-
+-				if (!skb_new)
+-					break;
+-				/* Do not count the CRC */
+-				skb_put(skb, pkt_len - 4);
+-				skb->protocol = eth_type_trans(skb, dev);
+-
+-				/* Pass the packet to upper layers */
+-				netif_receive_skb(skb);
+-				dev->last_rx = jiffies;
+-				dev->stats.rx_packets++;
+-				dev->stats.rx_bytes += pkt_len;
+-
+-				/* Update the mcast stats */
+-				if (devcs & ETH_RX_MP)
+-					dev->stats.multicast++;
+-
+-				lp->rx_skb[lp->rx_next_done] = skb_new;
+-			}
+-
+-			rd->devcs = 0;
+-
+-			/* Restore descriptor's curr_addr */
+-			if (skb_new)
+-				rd->ca = CPHYSADDR(skb_new->data);
+-			else
+-				rd->ca = CPHYSADDR(skb->data);
++			lp->rx_skb[lp->rx_next_done] = skb_new;
++		}
++		rd->devcs = 0;
++
++		/* Restore descriptor's curr_addr */
++		if (skb_new)
++			rd->ca = CPHYSADDR(skb_new->data);
++		else
++			rd->ca = CPHYSADDR(skb->data);
+ 
+-			rd->control = DMA_COUNT(KORINA_RBSIZE) |
++		rd->control = DMA_COUNT(KORINA_RBSIZE) |
+ 				DMA_DESC_COD | DMA_DESC_IOD;
+-			lp->rd_ring[(lp->rx_next_done - 1) &
+-				KORINA_RDS_MASK].control &=
+-				~DMA_DESC_COD;
+-
+-			lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK;
+-			dma_cache_wback((u32)rd, sizeof(*rd));
+-			rd = &lp->rd_ring[lp->rx_next_done];
+-			writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas);
+-		}
++		lp->rd_ring[(lp->rx_next_done - 1) &
++			KORINA_RDS_MASK].control &=
++			~DMA_DESC_COD;
++
++		lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK;
++		dma_cache_wback((u32)rd, sizeof(*rd));
++		rd = &lp->rd_ring[lp->rx_next_done];
++		writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas);
+ 	}
+ 
+ 	dmas = readl(&lp->rx_dma_regs->dmas);
diff --git a/target/linux/rb532/patches-2.6.28/011-korina_do_schedule_napi_after_testing_it.patch b/target/linux/rb532/patches-2.6.28/011-korina_do_schedule_napi_after_testing_it.patch
new file mode 100644
index 000000000..c5e1b9a40
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/011-korina_do_schedule_napi_after_testing_it.patch
@@ -0,0 +1,18 @@
+The called netif_rx_schedule() does all the work for us:
+- it checks the return value of netif_rx_schedule_prep() and
+- if everything is ok calls __netif_rx_schedule().
+Before this change, the driver received absolutely nothing.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+--- a/drivers/net/korina.c	2009-01-19 23:26:19.000000000 +0100
++++ b/drivers/net/korina.c	2009-01-19 23:27:06.000000000 +0100
+@@ -330,7 +330,7 @@
+ 
+ 	dmas = readl(&lp->rx_dma_regs->dmas);
+ 	if (dmas & (DMA_STAT_DONE | DMA_STAT_HALT | DMA_STAT_ERR)) {
+-		netif_rx_schedule_prep(dev, &lp->napi);
++		netif_rx_schedule(dev, &lp->napi);
+ 
+ 		dmasm = readl(&lp->rx_dma_regs->dmasm);
+ 		writel(dmasm | (DMA_STAT_DONE |
diff --git a/target/linux/rb532/patches-2.6.28/012-korina_do_tx_at_right_position.patch b/target/linux/rb532/patches-2.6.28/012-korina_do_tx_at_right_position.patch
new file mode 100644
index 000000000..101e869d0
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/012-korina_do_tx_at_right_position.patch
@@ -0,0 +1,40 @@
+Triggering TX before the write to the DMA status mask register leads to
+transferring packets with maximum payload no matter what the actual
+packet size is.
+While here, also trigger RX scheduling after writing the DMA status mask
+register, like it was in the original driver before it was sent
+upstream.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+--- a/drivers/net/korina.c	2009-01-19 23:27:41.000000000 +0100
++++ b/drivers/net/korina.c	2009-01-19 23:29:08.000000000 +0100
+@@ -330,12 +330,12 @@
+ 
+ 	dmas = readl(&lp->rx_dma_regs->dmas);
+ 	if (dmas & (DMA_STAT_DONE | DMA_STAT_HALT | DMA_STAT_ERR)) {
+-		netif_rx_schedule(dev, &lp->napi);
+-
+ 		dmasm = readl(&lp->rx_dma_regs->dmasm);
+ 		writel(dmasm | (DMA_STAT_DONE |
+ 				DMA_STAT_HALT | DMA_STAT_ERR),
+ 				&lp->rx_dma_regs->dmasm);
++		
++		netif_rx_schedule(dev, &lp->napi);
+ 
+ 		if (dmas & DMA_STAT_ERR)
+ 			printk(KERN_ERR DRV_NAME "%s: DMA error\n", dev->name);
+@@ -621,11 +621,11 @@
+ 	dmas = readl(&lp->tx_dma_regs->dmas);
+ 
+ 	if (dmas & (DMA_STAT_FINI | DMA_STAT_ERR)) {
+-		korina_tx(dev);
+-
+ 		dmasm = readl(&lp->tx_dma_regs->dmasm);
+ 		writel(dmasm | (DMA_STAT_FINI | DMA_STAT_ERR),
+ 				&lp->tx_dma_regs->dmasm);
++		
++		korina_tx(dev);
+ 
+ 		if (lp->tx_chain_status == desc_filled &&
+ 			(readl(&(lp->tx_dma_regs->dmandptr)) == 0)) {
diff --git a/target/linux/rb532/patches-2.6.28/013-korina_fix_handling_tx_chain_tail.patch b/target/linux/rb532/patches-2.6.28/013-korina_fix_handling_tx_chain_tail.patch
new file mode 100644
index 000000000..6babc3230
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/013-korina_fix_handling_tx_chain_tail.patch
@@ -0,0 +1,87 @@
+Originally this must have been a rewrite error when introducing
+'chain_index'. But the original driver did not use the previous chain
+item everywhere: when altering the address tx_chain_tail points to, it
+should move forward, not backwards.
+Also this is not an "index" but rather the penultimate element in the
+chain, so rename it accordingly.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |   22 +++++++++++-----------
+ 1 files changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index dced5e7..f200175 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -199,7 +199,7 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
+ 	struct korina_private *lp = netdev_priv(dev);
+ 	unsigned long flags;
+ 	u32 length;
+-	u32 chain_index;
++	u32 chain_prev, chain_next;
+ 	struct dma_desc *td;
+ 
+ 	spin_lock_irqsave(&lp->lock, flags);
+@@ -231,8 +231,8 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
+ 	/* Setup the transmit descriptor. */
+ 	dma_cache_inv((u32) td, sizeof(*td));
+ 	td->ca = CPHYSADDR(skb->data);
+-	chain_index = (lp->tx_chain_tail - 1) &
+-			KORINA_TDS_MASK;
++	chain_prev = (lp->tx_chain_tail - 1) & KORINA_TDS_MASK;
++	chain_next = (lp->tx_chain_tail + 1) & KORINA_TDS_MASK;
+ 
+ 	if (readl(&(lp->tx_dma_regs->dmandptr)) == 0) {
+ 		if (lp->tx_chain_status == desc_empty) {
+@@ -240,7 +240,7 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
+ 			td->control = DMA_COUNT(length) |
+ 					DMA_DESC_COF | DMA_DESC_IOF;
+ 			/* Move tail */
+-			lp->tx_chain_tail = chain_index;
++			lp->tx_chain_tail = chain_next;
+ 			/* Write to NDPTR */
+ 			writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]),
+ 					&lp->tx_dma_regs->dmandptr);
+@@ -251,12 +251,12 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
+ 			td->control = DMA_COUNT(length) |
+ 					DMA_DESC_COF | DMA_DESC_IOF;
+ 			/* Link to prev */
+-			lp->td_ring[chain_index].control &=
++			lp->td_ring[chain_prev].control &=
+ 					~DMA_DESC_COF;
+ 			/* Link to prev */
+-			lp->td_ring[chain_index].link =  CPHYSADDR(td);
++			lp->td_ring[chain_prev].link =  CPHYSADDR(td);
+ 			/* Move tail */
+-			lp->tx_chain_tail = chain_index;
++			lp->tx_chain_tail = chain_next;
+ 			/* Write to NDPTR */
+ 			writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]),
+ 					&(lp->tx_dma_regs->dmandptr));
+@@ -270,17 +270,17 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
+ 			td->control = DMA_COUNT(length) |
+ 					DMA_DESC_COF | DMA_DESC_IOF;
+ 			/* Move tail */
+-			lp->tx_chain_tail = chain_index;
++			lp->tx_chain_tail = chain_next;
+ 			lp->tx_chain_status = desc_filled;
+ 			netif_stop_queue(dev);
+ 		} else {
+ 			/* Update tail */
+ 			td->control = DMA_COUNT(length) |
+ 					DMA_DESC_COF | DMA_DESC_IOF;
+-			lp->td_ring[chain_index].control &=
++			lp->td_ring[chain_prev].control &=
+ 					~DMA_DESC_COF;
+-			lp->td_ring[chain_index].link =  CPHYSADDR(td);
+-			lp->tx_chain_tail = chain_index;
++			lp->td_ring[chain_prev].link =  CPHYSADDR(td);
++			lp->tx_chain_tail = chain_next;
+ 		}
+ 	}
+ 	dma_cache_wback((u32) td, sizeof(*td));
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/014-korina_do_not_stop_queue_here.patch b/target/linux/rb532/patches-2.6.28/014-korina_do_not_stop_queue_here.patch
new file mode 100644
index 000000000..79ae024b6
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/014-korina_do_not_stop_queue_here.patch
@@ -0,0 +1,25 @@
+Apparently this doesn't make sense. Otherwise the queue gets disabled as
+soon as it's getting empty and can only be resurrected by a driver
+restart.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    1 -
+ 1 files changed, 0 insertions(+), 1 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index f200175..bd33fa9 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -272,7 +272,6 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
+ 			/* Move tail */
+ 			lp->tx_chain_tail = chain_next;
+ 			lp->tx_chain_status = desc_filled;
+-			netif_stop_queue(dev);
+ 		} else {
+ 			/* Update tail */
+ 			td->control = DMA_COUNT(length) |
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/015-korina_irqf_flags.patch b/target/linux/rb532/patches-2.6.28/015-korina_irqf_flags.patch
new file mode 100644
index 000000000..74059fbeb
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/015-korina_irqf_flags.patch
@@ -0,0 +1,53 @@
+As the kernel warning states: "IRQF_DISABLED is not guaranteed on shared
+IRQs". Since these IRQs' values are hardcoded and my test system doesn't
+show any shared use of IRQs at all, rather make them non-shared than
+non-disabled.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    8 ++++----
+ 1 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index bd33fa9..1d6e48e 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -1000,14 +1000,14 @@ static int korina_open(struct net_device *dev)
+ 	 * that handles the Done Finished
+ 	 * Ovr and Und Events */
+ 	ret = request_irq(lp->rx_irq, &korina_rx_dma_interrupt,
+-		IRQF_SHARED | IRQF_DISABLED, "Korina ethernet Rx", dev);
++			IRQF_DISABLED, "Korina ethernet Rx", dev);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR DRV_NAME "%s: unable to get Rx DMA IRQ %d\n",
+ 		    dev->name, lp->rx_irq);
+ 		goto err_release;
+ 	}
+ 	ret = request_irq(lp->tx_irq, &korina_tx_dma_interrupt,
+-		IRQF_SHARED | IRQF_DISABLED, "Korina ethernet Tx", dev);
++			IRQF_DISABLED, "Korina ethernet Tx", dev);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR DRV_NAME "%s: unable to get Tx DMA IRQ %d\n",
+ 		    dev->name, lp->tx_irq);
+@@ -1016,7 +1016,7 @@ static int korina_open(struct net_device *dev)
+ 
+ 	/* Install handler for overrun error. */
+ 	ret = request_irq(lp->ovr_irq, &korina_ovr_interrupt,
+-			IRQF_SHARED | IRQF_DISABLED, "Ethernet Overflow", dev);
++			IRQF_DISABLED, "Ethernet Overflow", dev);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR DRV_NAME"%s: unable to get OVR IRQ %d\n",
+ 		    dev->name, lp->ovr_irq);
+@@ -1025,7 +1025,7 @@ static int korina_open(struct net_device *dev)
+ 
+ 	/* Install handler for underflow error. */
+ 	ret = request_irq(lp->und_irq, &korina_und_interrupt,
+-			IRQF_SHARED | IRQF_DISABLED, "Ethernet Underflow", dev);
++			IRQF_DISABLED, "Ethernet Underflow", dev);
+ 	if (ret < 0) {
+ 		printk(KERN_ERR DRV_NAME "%s: unable to get UND IRQ %d\n",
+ 		    dev->name, lp->und_irq);
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/016-korina_drop_left_over_assignment.patch b/target/linux/rb532/patches-2.6.28/016-korina_drop_left_over_assignment.patch
new file mode 100644
index 000000000..ab82cb5af
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/016-korina_drop_left_over_assignment.patch
@@ -0,0 +1,34 @@
+As the assigned value is being overwritten shortly after, it can be
+dropped and so the whole variable definition moved to the start of the
+function.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    3 +--
+ 1 files changed, 1 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index 60ae7bf..75010ca 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -743,6 +743,7 @@ static struct ethtool_ops netdev_ethtool_ops = {
+ static void korina_alloc_ring(struct net_device *dev)
+ {
+ 	struct korina_private *lp = netdev_priv(dev);
++	struct sk_buff *skb;
+ 	int i;
+ 
+ 	/* Initialize the transmit descriptors */
+@@ -758,8 +759,6 @@ static void korina_alloc_ring(struct net_device *dev)
+ 
+ 	/* Initialize the receive descriptors */
+ 	for (i = 0; i < KORINA_NUM_RDS; i++) {
+-		struct sk_buff *skb = lp->rx_skb[i];
+-
+ 		skb = dev_alloc_skb(KORINA_RBSIZE + 2);
+ 		if (!skb)
+ 			break;
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/017-korina_fix_loop_back_rx_desc.patch b/target/linux/rb532/patches-2.6.28/017-korina_fix_loop_back_rx_desc.patch
new file mode 100644
index 000000000..0484f2cbe
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/017-korina_fix_loop_back_rx_desc.patch
@@ -0,0 +1,36 @@
+After the last loop iteration, i has the value RC32434_NUM_RDS and
+therefore leads to an index overflow when used afterwards to address the
+last element. This is yet another another bug introduced when rewriting
+parts of the driver for upstream preparation, as the original driver
+used 'RC32434_NUM_RDS - 1' instead.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    9 +++++----
+ 1 files changed, 5 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index 1d6e48e..67fbdf4 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -769,11 +769,12 @@ static void korina_alloc_ring(struct net_device *dev)
+ 		lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[i+1]);
+ 	}
+ 
+-	/* loop back */
+-	lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[0]);
+-	lp->rx_next_done  = 0;
++	/* loop back receive descriptors, so the last
++	 * descriptor points to the first one */
++	lp->rd_ring[i - 1].link = CPHYSADDR(&lp->rd_ring[0]);
++	lp->rd_ring[i - 1].control |= DMA_DESC_COD;
+ 
+-	lp->rd_ring[i].control |= DMA_DESC_COD;
++	lp->rx_next_done  = 0;
+ 	lp->rx_chain_head = 0;
+ 	lp->rx_chain_tail = 0;
+ 	lp->rx_chain_status = desc_empty;
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/018-korina_adjust_headroom.patch b/target/linux/rb532/patches-2.6.28/018-korina_adjust_headroom.patch
new file mode 100644
index 000000000..f9f8daccc
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/018-korina_adjust_headroom.patch
@@ -0,0 +1,28 @@
+This is copy and paste from the original driver. As skb_reserve() is
+also called within korina_alloc_ring() when initially allocating the
+receive descriptors, the same should be done when allocating new space
+after passing an skb to upper layers.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    3 +++
+ 1 files changed, 3 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index 67fbdf4..60ae7bf 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -416,6 +416,9 @@ static int korina_rx(struct net_device *dev, int limit)
+ 			if (devcs & ETH_RX_MP)
+ 				dev->stats.multicast++;
+ 
++			/* 16 bit align */
++			skb_reserve(skb_new, 2);
++
+ 			lp->rx_skb[lp->rx_next_done] = skb_new;
+ 		}
+ 
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/019-korina_set_dev_field_allocated_skb.patch b/target/linux/rb532/patches-2.6.28/019-korina_set_dev_field_allocated_skb.patch
new file mode 100644
index 000000000..bec351488
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/019-korina_set_dev_field_allocated_skb.patch
@@ -0,0 +1,33 @@
+I'm not sure if this is necessary, but the original driver did it and
+apparently also many other drivers do it, so it should not be completely
+wrong to do it.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ drivers/net/korina.c |    2 ++
+ 1 files changed, 2 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/net/korina.c b/drivers/net/korina.c
+index 75010ca..56b4db2 100644
+--- a/drivers/net/korina.c
++++ b/drivers/net/korina.c
+@@ -419,6 +419,7 @@ static int korina_rx(struct net_device *dev, int limit)
+ 			/* 16 bit align */
+ 			skb_reserve(skb_new, 2);
+ 
++			skb_new->dev = dev;
+ 			lp->rx_skb[lp->rx_next_done] = skb_new;
+ 		}
+ 
+@@ -763,6 +764,7 @@ static void korina_alloc_ring(struct net_device *dev)
+ 		if (!skb)
+ 			break;
+ 		skb_reserve(skb, 2);
++		skb->dev = dev;
+ 		lp->rx_skb[i] = skb;
+ 		lp->rd_ring[i].control = DMA_DESC_IOD |
+ 				DMA_COUNT(KORINA_RBSIZE);
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/020-rc32434_res_name.patch b/target/linux/rb532/patches-2.6.28/020-rc32434_res_name.patch
new file mode 100644
index 000000000..e61ec8330
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/020-rc32434_res_name.patch
@@ -0,0 +1,12 @@
+diff -urN linux-2.6.27.5/drivers/watchdog/rc32434_wdt.c linux-2.6.27.5.new/drivers/watchdog/rc32434_wdt.c
+--- linux-2.6.27.5/drivers/watchdog/rc32434_wdt.c	2008-11-07 18:55:34.000000000 +0100
++++ linux-2.6.27.5.new/drivers/watchdog/rc32434_wdt.c	2008-11-15 22:06:28.000000000 +0100
+@@ -261,7 +261,7 @@
+ 	int ret;
+ 	struct resource *r;
+ 
+-	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb500_wdt_res");
++	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb532_wdt_res");
+ 	if (!r) {
+ 		printk(KERN_ERR KBUILD_MODNAME
+ 			"failed to retrieve resources\n");
diff --git a/target/linux/rb532/patches-2.6.28/021-rb532_driver_data.patch b/target/linux/rb532/patches-2.6.28/021-rb532_driver_data.patch
new file mode 100644
index 000000000..9aaeef334
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/021-rb532_driver_data.patch
@@ -0,0 +1,26 @@
+As the korina ethernet driver uses platform_get_drvdata() to extract the
+driver specific data from the platform device, driver_data has to be
+used here.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ arch/mips/rb532/devices.c |    2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/arch/mips/rb532/devices.c b/arch/mips/rb532/devices.c
+index 9b6b744..3c74561 100644
+--- a/arch/mips/rb532/devices.c
++++ b/arch/mips/rb532/devices.c
+@@ -89,7 +89,7 @@ static struct korina_device korina_dev0_data = {
+ static struct platform_device korina_dev0 = {
+ 	.id = -1,
+ 	.name = "korina",
+-	.dev.platform_data = &korina_dev0_data,
++	.dev.driver_data = &korina_dev0_data,
+ 	.resource = korina_dev0_res,
+ 	.num_resources = ARRAY_SIZE(korina_dev0_res),
+ };
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/022-rb532_uart_autodetect.patch b/target/linux/rb532/patches-2.6.28/022-rb532_uart_autodetect.patch
new file mode 100644
index 000000000..ae42a4dbc
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/022-rb532_uart_autodetect.patch
@@ -0,0 +1,91 @@
+Auto-detection works just fine, so use it instead of specifying the type
+manually. Also define a platform device for the uart, as suggested by
+David Daney.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+ arch/mips/rb532/devices.c |   26 ++++++++++++++++++++++++++
+ arch/mips/rb532/serial.c  |    2 +-
+ 2 files changed, 27 insertions(+), 1 deletions(-)
+
+diff --git a/arch/mips/rb532/devices.c b/arch/mips/rb532/devices.c
+index c1c2918..9b6b744 100644
+--- a/arch/mips/rb532/devices.c
++++ b/arch/mips/rb532/devices.c
+@@ -24,6 +24,7 @@
+ #include <linux/mtd/partitions.h>
+ #include <linux/gpio_keys.h>
+ #include <linux/input.h>
++#include <linux/serial_8250.h>
+ 
+ #include <asm/bootinfo.h>
+ 
+@@ -39,6 +40,8 @@
+ #define ETH0_RX_DMA_ADDR  (DMA0_BASE_ADDR + 0 * DMA_CHAN_OFFSET)
+ #define ETH0_TX_DMA_ADDR  (DMA0_BASE_ADDR + 1 * DMA_CHAN_OFFSET)
+ 
++extern unsigned int idt_cpu_freq;
++
+ static struct resource korina_dev0_res[] = {
+ 	{
+ 		.name = "korina_regs",
+@@ -214,12 +217,32 @@ static struct platform_device rb532_wdt = {
+ 	.num_resources	= ARRAY_SIZE(rb532_wdt_res),
+ };
+ 
++static struct plat_serial8250_port rb532_uart_res[] = {
++	{
++		.membase	= (char *)KSEG1ADDR(REGBASE + UART0BASE),
++		.irq		= UART0_IRQ,
++		.regshift	= 2,
++		.iotype		= UPIO_MEM,
++		.flags		= UPF_BOOT_AUTOCONF,
++	},
++	{
++		.flags		= 0,
++	}
++};
++
++static struct platform_device rb532_uart = {
++	.name              = "serial8250",
++	.id                = PLAT8250_DEV_PLATFORM,
++	.dev.platform_data = &rb532_uart_res,
++};
++
+ static struct platform_device *rb532_devs[] = {
+ 	&korina_dev0,
+ 	&nand_slot0,
+ 	&cf_slot0,
+ 	&rb532_led,
+ 	&rb532_button,
++	&rb532_uart,
+ 	&rb532_wdt
+ };
+ 
+@@ -294,6 +317,9 @@ static int __init plat_setup_devices(void)
+ 	/* Initialise the NAND device */
+ 	rb532_nand_setup();
+ 
++	/* set the uart clock to the current cpu frequency */
++	rb532_uart_res[0].uartclk = idt_cpu_freq;
++
+ 	return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs));
+ }
+ 
+diff --git a/arch/mips/rb532/serial.c b/arch/mips/rb532/serial.c
+index 3e0d7ec..00ed19f 100644
+--- a/arch/mips/rb532/serial.c
++++ b/arch/mips/rb532/serial.c
+@@ -36,7 +36,7 @@
+ extern unsigned int idt_cpu_freq;
+ 
+ static struct uart_port rb532_uart = {
+-	.type = PORT_16550A,
++	.flags = UPF_BOOT_AUTOCONF,
+ 	.line = 0,
+ 	.irq = UART0_IRQ,
+ 	.iotype = UPIO_MEM,
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/023-rb532_fix_init_of_rb532_dev3_ctl_res.patch b/target/linux/rb532/patches-2.6.28/023-rb532_fix_init_of_rb532_dev3_ctl_res.patch
new file mode 100644
index 000000000..64a6d8934
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/023-rb532_fix_init_of_rb532_dev3_ctl_res.patch
@@ -0,0 +1,32 @@
+This register just contains the address of the actual resource, so
+initialisation has to be the same as cf_slot0_res and nand_slot0_res.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+diff --git a/arch/mips/rb532/gpio.c b/arch/mips/rb532/gpio.c
+index d75eb19..40deb11 100644
+--- a/arch/mips/rb532/gpio.c
++++ b/arch/mips/rb532/gpio.c
+@@ -55,8 +55,6 @@ static struct resource rb532_gpio_reg0_res[] = {
+ static struct resource rb532_dev3_ctl_res[] = {
+ 	{
+ 		.name	= "dev3_ctl",
+-		.start	= REGBASE + DEV3BASE,
+-		.end	= REGBASE + DEV3BASE + sizeof(struct dev_reg) - 1,
+ 		.flags	= IORESOURCE_MEM,
+ 	}
+ };
+@@ -243,6 +241,9 @@ int __init rb532_gpio_init(void)
+ 	/* Register our GPIO chip */
+ 	gpiochip_add(&rb532_gpio_chip->chip);
+ 
++	rb532_dev3_ctl_res[0].start = readl(IDT434_REG_BASE + DEV3BASE);
++	rb532_dev3_ctl_res[0].end = rb532_dev3_ctl_res[0].start + 0x1000;
++
+ 	r = rb532_dev3_ctl_res;
+ 	dev3.base = ioremap_nocache(r->start, r->end - r->start);
+ 
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/024-rb532_fix_set_latch_u5.patch b/target/linux/rb532/patches-2.6.28/024-rb532_fix_set_latch_u5.patch
new file mode 100644
index 000000000..fc0c77ec2
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/024-rb532_fix_set_latch_u5.patch
@@ -0,0 +1,23 @@
+The data to be written is just a byte, so use writeb instead of writel.
+Also, dev3.base contains the address, not the data so referencing here
+is wrong.
+
+Signed-off-by: Phil Sutter <n0-1@freewrt.org>
+---
+diff --git a/arch/mips/rb532/gpio.c b/arch/mips/rb532/gpio.c
+index 40deb11..7e0cb4f 100644
+--- a/arch/mips/rb532/gpio.c
++++ b/arch/mips/rb532/gpio.c
+@@ -93,7 +93,7 @@ void set_latch_u5(unsigned char or_mask, unsigned char nand_mask)
+ 	spin_lock_irqsave(&dev3.lock, flags);
+ 
+ 	dev3.state = (dev3.state | or_mask) & ~nand_mask;
+-	writel(dev3.state, &dev3.base);
++	writeb(dev3.state, dev3.base);
+ 
+ 	spin_unlock_irqrestore(&dev3.lock, flags);
+ }
+-- 
+1.5.6.4
+
+
diff --git a/target/linux/rb532/patches-2.6.28/025-rb532_nand_fixup.patch b/target/linux/rb532/patches-2.6.28/025-rb532_nand_fixup.patch
new file mode 100644
index 000000000..709160980
--- /dev/null
+++ b/target/linux/rb532/patches-2.6.28/025-rb532_nand_fixup.patch
@@ -0,0 +1,48 @@
+--- a/arch/mips/rb532/devices.c	2009-01-25 13:36:15.000000000 +0100
++++ b/arch/mips/rb532/devices.c	2009-01-25 14:00:56.000000000 +0100
+@@ -119,6 +119,19 @@
+ };
+ 
+ /* Resources and device for NAND */
++
++/*
++ * We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader
++ * will not be able to find the kernel that we load.  So set the oobinfo
++ * when creating the partitions
++ */
++static struct nand_ecclayout rb532_nand_ecclayout = {
++	.eccbytes       = 6,
++	.eccpos         = { 8, 9, 10, 13, 14, 15 },
++	.oobavail       = 9,
++	.oobfree        = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
++};
++
+ static int rb532_dev_ready(struct mtd_info *mtd)
+ {
+ 	return gpio_get_value(GPIO_RDY);
+@@ -277,6 +290,16 @@
+ /* NAND definitions */
+ #define NAND_CHIP_DELAY	25
+ 
++static int rb532_nand_fixup(struct mtd_info *mtd)
++{
++	struct nand_chip *chip = mtd->priv;
++
++	if (mtd->writesize == 512)
++		chip->ecc.layout = &rb532_nand_ecclayout;
++
++	return 0;
++}
++
+ static void __init rb532_nand_setup(void)
+ {
+ 	switch (mips_machtype) {
+@@ -296,6 +319,8 @@
+ 	rb532_nand_data.chip.partitions = rb532_partition_info;
+ 	rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY;
+ 	rb532_nand_data.chip.options = NAND_NO_AUTOINCR;
++	
++	rb532_nand_data.chip.chip_fixup = &rb532_nand_fixup;
+ }
+ 
+