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* serial-arc: switch to DMAlexey Brodkin2015-04-03-32/+70
| | | | | | | | Now when all infrastructure in ARC is ready for it let's switch ARC UART to driver model. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Simon Glass <sjg@chromium.org>
* serial/serial_arc: set registers address during compilationAlexey Brodkin2015-04-03-2/+1
| | | | | | | | | | Being global variable with 0 value it falls into .bss area which we may only use after relocation to RAM. And right afetr relocation we zero .bss - effectively cleaing register address set for early console. Now with pre-set value "regs" variable is no longer in .bss and this way safely survives relocation. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
* serial: arc: Convert to use default_serial_putsAxel Lin2014-02-21-7/+1
| | | | | | Use default_serial_puts() instead of duplicating the implementation. Signed-off-by: Axel Lin <axel.lin@ingics.com>
* serial/serial_arc: switch from {read|write}l to {read|write}b accessorsAlexey Brodkin2014-02-21-9/+9
| | | | | | | | | | | | | This is required for proper functionality on big-endian targets. Memory-mapped registres of ARC UART are not 32-bit words but 8-bit bytes so on little-endian target either acessor (_l or _b) works fine. On big-endian only _b accessors works as expected. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Noam Camus <noamc@ezchip.com> Cc: Tom Rini <trini@ti.com>
* serial/serial_arc: add work-around of ISS bugAlexey Brodkin2014-02-21-0/+16
| | | | | | | | | | Explanation is in in-lined comment. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Noam Camus <noamc@ezchip.com> Cc: Tom Rini <trini@ti.com>
* serial/serial_arc - add driver for ARC UARTAlexey Brodkin2014-02-07-0/+105
Driver for non-standard on-chip UART, instantiated in the ARC (Synopsys) FPGA Boards such as ARCAngel4/ML50x Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Mischa Jonker <mjonker@synopsys.com> Cc: Francois Bedard <fbedard@synopsys.com> Cc: Tom Rini <trini@ti.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Stefano Babic <sbabic@denx.de>