Hi Greg,
Here is a patch for downloading xilinx fpga program image:
* Download Xilinx FPGA image
* This module downloads Xilinx FPGA image using gpio pins.
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Patch checklist:
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[x] run checkpatch
[x] specify where to apply the patch
[x] build test using "ppc64e_defconfig"
[x] running test, running code is built with 3.8.13 kernel due to target
specific kernel
Thank you,
Insop Song
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1. SUMMARY
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* Download Xilinx FPGA image
* This module downloads Xilinx FPGA image using gpio pins.
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1.b Patch is prepared at:
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- git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
- branch: staging-next
- after 98e54917311609d29d4a0aae3a4a08f8ab502984 (latest as of when sending
this)
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2. BACKGROUND
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An FPGA (Field Programmable Gate Array) is a programmable hardware that is
used in various applications. Hardware design needs to programmed through
a dedicated device or CPU assisted way (serial or parallel).
This driver provides a way to download FPGA image.
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3. DESIGN
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* load Xilinx FPGA bitstream format[1] image using kernel firmware framework,
request_firmware()
* program the Xilinx FPGA using SelectMAP (parallel) mode [2]
* FPGA prgram is done by gpio based bit-banging, as an example
* platform independent file: gs_fpgaboot.c
* platform dependent file: io.c
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4. HOW TO USE
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$ insmod gs_fpga.ko file="xlinx_fpga_top_bitstream.bit"
$ rmmod gs_fpga
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5. REFERENCE
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1. Xilinx APP NOTE XAPP583:
http://www.xilinx.com/support/documentation/application_notes/xapp583-fpga-configuration.pdf
2. bitstream file info:
http://home.earthlink.net/~davesullins/software/bitinfo.html
Insop Song (1):
Download Xilinx FPGA image
drivers/staging/Kconfig | 2 +
drivers/staging/Makefile | 1 +
drivers/staging/gs_fpgaboot/Kconfig | 8 +
drivers/staging/gs_fpgaboot/Makefile | 4 +
drivers/staging/gs_fpgaboot/README | 60 ++++
drivers/staging/gs_fpgaboot/gs_fpgaboot.c | 505 +++++++++++++++++++++++++++++
drivers/staging/gs_fpgaboot/gs_fpgaboot.h | 56 ++++
drivers/staging/gs_fpgaboot/io.c | 331 +++++++++++++++++++
drivers/staging/gs_fpgaboot/io.h | 90 +++++
9 files changed, 1057 insertions(+)
create mode 100644 drivers/staging/gs_fpgaboot/Kconfig
create mode 100644 drivers/staging/gs_fpgaboot/Makefile
create mode 100644 drivers/staging/gs_fpgaboot/README
create mode 100644 drivers/staging/gs_fpgaboot/gs_fpgaboot.c
create mode 100644 drivers/staging/gs_fpgaboot/gs_fpgaboot.h
create mode 100644 drivers/staging/gs_fpgaboot/io.c
create mode 100644 drivers/staging/gs_fpgaboot/io.h
--
1.7.9.5
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