[U-Boot] [PATCH v7 3/7] ARM: socfpga: Add FPGA drivers for Arria 10 FPGA bitstream loading

[Chee, Tien Fong <tien.fong.chee@intel.com>]

On Thu, 2019-01-31 at 15:55 +0100, Marek Vasut wrote:
> On 1/31/19 3:51 PM, tien.fong.chee at intel.com wrote:
> > 
> > From: Tien Fong Chee <tien.fong.chee@intel.com>
> > 
> > Add FPGA driver to support program FPGA with FPGA bitstream loading
> > from
> > filesystem. The driver are designed based on generic firmware
> > loader
> > framework. The driver can handle FPGA program operation from
> > loading FPGA
> > bitstream in flash to memory and then to program FPGA.
> > 
> > Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
> > 
> > ---
> > 
> > changes for v7
> > - Restructure the FPGA driver to support both peripheral bitstream
> > and core
> >   bitstream bundled into FIT image.
> > - Support loadable property for core bitstream. User can set
> > loadable
> >   in DDR for better performance. This loading would be done in one
> > large
> >   chunk instead of chunk by chunk loading with small memory buffer.
> > ---
> >  arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts       |  18 +
> >  .../include/mach/fpga_manager_arria10.h            |  39 +-
> >  drivers/fpga/socfpga_arria10.c                     | 417
> > ++++++++++++++++++++-
> >  3 files changed, 457 insertions(+), 17 deletions(-)
> > 
> > diff --git a/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > b/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > index 998d811..dc55618 100644
> > --- a/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > +++ b/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > @@ -18,6 +18,24 @@
> >  /dts-v1/;
> >  #include "socfpga_arria10_socdk.dtsi"
> >  
> > +/ {
> > +	chosen {
> > +		firmware-loader = &fs_loader0;
> Shouldn't this be <&fs_loader0>; ?
> How did this even pass the DTC ?
So <> is compulsory required for phandle? No error complaint from DTC.
> 
> > 
> > +	};
> > +
> > +	fs_loader0: fs-loader at 0 {
> > +		u-boot,dm-pre-reloc;
> > +		compatible = "u-boot,fs-loader";
> > +		phandlepart = <&mmc 1>;
> > +	};
> > +};
> > +
> > +&fpga_mgr {
> > +	u-boot,dm-pre-reloc;
> > +	altr,bitstream = "fit_spl_fpga.itb";
> > +	altr,bitstream-core = "fit_spl_fpga.itb";
> > +};
> > +
> >  &mmc {
> >  	u-boot,dm-pre-reloc;
> >  	status = "okay";
> > diff --git a/arch/arm/mach-
> > socfpga/include/mach/fpga_manager_arria10.h b/arch/arm/mach-
> > socfpga/include/mach/fpga_manager_arria10.h
> > index 09d13f6..683c84c 100644
> > --- a/arch/arm/mach-socfpga/include/mach/fpga_manager_arria10.h
> > +++ b/arch/arm/mach-socfpga/include/mach/fpga_manager_arria10.h
> > @@ -1,9 +1,13 @@
> >  /* SPDX-License-Identifier: GPL-2.0 */
> >  /*
> > - * Copyright (C) 2017 Intel Corporation <www.intel.com>
> > + * Copyright (C) 2017-2019 Intel Corporation <www.intel.com>
> >   * All rights reserved.
> >   */
> >  
> > +#include <asm/cache.h>
> > +#include <altera.h>
> > +#include <image.h>
> > +
> >  #ifndef _FPGA_MANAGER_ARRIA10_H_
> >  #define _FPGA_MANAGER_ARRIA10_H_
> >  
> > @@ -51,6 +55,10 @@
> >  #define ALT_FPGAMGR_IMGCFG_CTL_02_CFGWIDTH_SET_MSK		
> > BIT(24)
> >  #define ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_LSB			
> > 16
> >  
> > +#define FPGA_SOCFPGA_A10_RBF_UNENCRYPTED	0xa65c
> > +#define FPGA_SOCFPGA_A10_RBF_ENCRYPTED		0xa65d
> > +#define FPGA_SOCFPGA_A10_RBF_PERIPH		0x0001
> > +#define FPGA_SOCFPGA_A10_RBF_CORE		0x8001
> >  #ifndef __ASSEMBLY__
> >  
> >  struct socfpga_fpga_manager {
> > @@ -88,12 +96,39 @@ struct socfpga_fpga_manager {
> >  	u32  imgcfg_fifo_status;
> >  };
> >  
> > +enum rbf_type {
> > +	unknown,
> > +	periph_section,
> > +	core_section
> > +};
> [...]
> 
>