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Now as the colibri_vf61 configuration supports memory size as well as
module type auto detection actually rename it to colibri_vf to be
universally used for Colibri VF50 as well as VF61.
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Implement module type (e.g. VF50 vs. VF61) auto detection based on L2
cache availability. Set specific ARM core clock (e.g. 400 vs. 500 MHz)
as well as Linux machine id number.
While at it actually use memargs instead of hard-coded mem= value.
While at it fix sdboot command if initially booting U-Boot from NAND by
doing an explicit mmc part 0.
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Add initial Colibri VF61 support based off Timesys' implementation for
Freescale's Vybrid Tower System TWR-VF65GS10:
- New machine ID.
- Default UART_A on SCI0.
- ESDHC2 only.
- 8-bit NAND.
- No quad SPI.
- FEC1 only.
- Enabled command line editing.
- PLL5 based RMII clocking (e.g. no external crystal).
- UART_A, UART_B and UART_C I/O muxing.
- Increase the available space for the U-Boot binary to half a megabyte
by booting from gfxRAM rather than sysRAM0.
- Integrate factory configuration block handling for hardware version,
MAC address and serial number to be passed to Linux.
- The U-Boot environment is stored in NAND flash.
- Fix long standing boot hang issue introduced by Freescale's Vybrid
1.1 silicon.
- Proper 256 MB Nanya DDR3 RAM timings.
Tested on early Colibri VF61 prototypes V1.0b and V1.0c using SD card
(mandatory for initial loading) as well as NAND boot.
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