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Diffstat (limited to 'u-boot/doc/README.PXA_CF')
| -rw-r--r-- | u-boot/doc/README.PXA_CF | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/u-boot/doc/README.PXA_CF b/u-boot/doc/README.PXA_CF new file mode 100644 index 0000000..1d76b32 --- /dev/null +++ b/u-boot/doc/README.PXA_CF @@ -0,0 +1,56 @@ + +These are brief instructions on how to add support for CF adapters to +custom designed PXA boards. You need to set the parameters in the +config file. This should work for most implementations especially if you +follow the connections of the standard lubbock. Anyway just the block +marked memory configuration should be touched since the other parameters +are imposed by the PXA architecture. + +EDIT 2010-07-01: in common/cmd_ide.c, having CONFIG_PXA_PCMCIA defined +would cause looping on inw()/outw() rather than using insw()/outsw(), +thus making sure IDE / ATA bytes are properly swapped. This behaviour +is now controlled by CONFIG_IDE_SWAP_IO, therefore PXA boards with +PCMCIA should #define CONFIG_IDE_SWAP_IO. + +#define CONFIG_IDE_SWAP_IO + +#define CONFIG_PXA_PCMCIA 1 +#define CONFIG_PXA_IDE 1 + +#define CONFIG_PCMCIA_SLOT_A 1 +/* just to keep build system happy */ + +#define CONFIG_SYS_PCMCIA_MEM_ADDR 0x28000000 +#define CONFIG_SYS_PCMCIA_MEM_SIZE 0x10000000 + +#define CONFIG_SYS_MECR_VAL 0x00000000 +#define CONFIG_SYS_MCMEM0_VAL 0x00004204 +#define CONFIG_SYS_MCMEM1_VAL 0x00000000 +#define CONFIG_SYS_MCATT0_VAL 0x00010504 +#define CONFIG_SYS_MCATT1_VAL 0x00000000 +#define CONFIG_SYS_MCIO0_VAL 0x00008407 +#define CONFIG_SYS_MCIO1_VAL 0x00000000 +/* memory configuration */ + +#define CONFIG_SYS_IDE_MAXBUS 1 +/* max. 1 IDE bus */ +#define CONFIG_SYS_IDE_MAXDEVICE 1 +/* max. 1 drive per IDE bus */ + +#define CONFIG_SYS_ATA_IDE0_OFFSET 0x0000 + +#define CONFIG_SYS_ATA_BASE_ADDR 0x20000000 + +/* Offset for data I/O */ +#define CONFIG_SYS_ATA_DATA_OFFSET 0x1f0 + +/* Offset for normal register accesses */ +#define CONFIG_SYS_ATA_REG_OFFSET 0x1f0 + +/* Offset for alternate registers */ +#define CONFIG_SYS_ATA_ALT_OFFSET 0x3f0 + + +Another important point is that maybe you have to power the pcmcia +subsystem. This is very board specific, for an example on how to +do it please search for CONFIG_EXADRON1 in cmd_pcmcia.c |