The t3corp board has an Xilinx DS617 flash chip connected to the
onboard FPGA. This patch adds support for these chips. Board
specific flash accessor functions are needed, since the chips
can only be read correctly in 16bit mode.
Additionally the FPGA chip-selects are configured for device-paced
transfers (ready is enabled).
Signed-off-by: Stefan Roese <sr@denx.de>
This patch moves some ppc4xx related headers from the common include
directory (include/) to the powerpc specific one
(arch/powerpc/include/asm/). This way to common include directory is not
so cluttered with files.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch fixes some problems for the T3CORP board. Here the list
of the changes:
- Add 600-67 and 677 CPU frequency setting to chip_config
command
- Define CONFIG_DDR_RFDC_FIXED on t3corp:
While using the "normal" auto calibration code, sometimes values for
RFDC were picked (>= T3) that resulted in a non-working U-Boot (hang
upon relocation, while running from SDRAM). With this optimized RFDC
value we can force this register and use the auto-calibration code to
setup the remaining calibration registers.
- Increase sizes of FPGA chips selects
- EBC timing updated OEN=3 for 66 MHz EBC speed
- Change ext. IRQ2 setup to level-low active
- Enable CONFIG_SYS_CFI_FLASH_STATUS_POLL
By defining CONFIG_SYS_CFI_FLASH_STATUS_POLL, DQ7 is polled to detect the
chip busy status. This is now used instead of the data toggle method which
is used historically by default in the common CFI driver. With this change
a problem with not written data is solved on this board, where a 32 byte
block of data is still erased instead of filled with the correct content
after these commands:
=> erase 0xfc100000 +0x1000000
....................................................................
done
Erased 128 sectors
=> cp.b 0x100000 0xfc100000 0x1000000
Copy to Flash... done
=> cmp.b 0x100000 0xfc100000 0x1000000
byte at 0x00d0d6c0 (0x00) != byte at 0xfcd0d6c0 (0xff)
Total of 12637888 bytes were the same
Signed-off-by: Stefan Roese <sr@denx.de>
