diff options
Diffstat (limited to 'packages/linux/nas100d-kernel/2.6.14/10-ixp4xx-le.patch')
| -rw-r--r-- | packages/linux/nas100d-kernel/2.6.14/10-ixp4xx-le.patch | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/packages/linux/nas100d-kernel/2.6.14/10-ixp4xx-le.patch b/packages/linux/nas100d-kernel/2.6.14/10-ixp4xx-le.patch deleted file mode 100644 index 0b50e4e1a0..0000000000 --- a/packages/linux/nas100d-kernel/2.6.14/10-ixp4xx-le.patch +++ /dev/null @@ -1,54 +0,0 @@ ---- linux-2.6.14/drivers/mtd/maps/ixp4xx.c 2005-10-27 17:02:08.000000000 -0700 -+++ linux-2.6.14/drivers/mtd/maps/ixp4xx.c 2005-10-29 23:11:24.990820968 -0700 -@@ -22,6 +22,7 @@ - #include <linux/string.h> - #include <linux/mtd/mtd.h> - #include <linux/mtd/map.h> -+#include <linux/mtd/cfi_endian.h> - #include <linux/mtd/partitions.h> - #include <linux/ioport.h> - #include <linux/device.h> -@@ -30,17 +31,40 @@ - - #include <linux/reboot.h> - -+/* On a little-endian IXP4XX system (tested on NSLU2) an LDRH or STRH -+ * will flip the second address bit - i.e. XOR the address with 10b. -+ * This causes the cfi commands (sent to the command address, 0xAA for -+ * 16 bit flash) to fail. This is fixed here by XOR'ing the address -+ * before use with 10b. The cost of this is that the flash layout ends -+ * up with pdp-endiannes (on an LE system), however this is not a problem -+ * as the access code consistently only accesses half words - so the -+ * endianness is not determinable on stuff which is written and read -+ * consistently in the little endian world. -+ * -+ * For flash data from the big-endian world, however, the results are -+ * weird - the pdp-endianness results in the data apparently being -+ * 2-byte swapped (as in dd conv=swab). To work round this the 16 -+ * bit values are written and read using cpu_to_cfi16 and cfi16_to_cpu, -+ * by default these are no-ops, but if the MTD driver is configed with -+ * CONFIG_MTD_CFI_BE_BYTE_SWAP the macros will byte swap the data, -+ * resulting in a consistently BE view of the flash on both BE (no -+ * op) and LE systems. This config setting also causes the command -+ * data from the CFI implementation to get swapped - as is required -+ * so that this code will *unswap* it and give the correct command -+ * data to the flash. -+ */ - #ifndef __ARMEB__ - #define BYTE0(h) ((h) & 0xFF) - #define BYTE1(h) (((h) >> 8) & 0xFF) -+#define FLASHWORD(a) (*(__u16*)((u32)(a) ^ 2)) - #else - #define BYTE0(h) (((h) >> 8) & 0xFF) - #define BYTE1(h) ((h) & 0xFF) -+#define FLASHWORD(a) (*(__u16*)(a)) - #endif - --#define FLASHWORD(a) (*(__u16*)(a)) --#define FLASHVAL(a) FLASHWORD(a) --#define FLASHSET(a,v) do { FLASHWORD(a) = (v); } while (0) -+#define FLASHVAL(a) cfi16_to_cpu(FLASHWORD(a)) -+#define FLASHSET(a,v) (FLASHWORD(a) = cpu_to_cfi16(v)) - - static map_word ixp4xx_read16(struct map_info *map, unsigned long ofs) - { |