[U-Boot] [PATCH v12 5/9] ARM: socfpga: Add FPGA drivers for Arria 10 FPGA bitstream loading

Simon Goldschmidt
2019-04-30T12:24:06Z

On Tue, Apr 30, 2019 at 2:09 PM Chee, Tien Fong
<tien.fong.chee@intel.com> wrote:
>
> On Sat, 2019-04-27 at 21:57 +0200, Simon Goldschmidt wrote:
> >
> > On 19.03.19 09:50, 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 v12
> > > - No changes.
> > >
> > > changes for v11
> > > - No changes.
> > >
> > > changes for v10
> > > -Cleaned up the codes.
> > > -Return -EPERM when programing core on non early IO release mode. >
> > > -Using live function to get rid of gd->
> > You got rid of gd-> in v10? How come I see numerous references to it
> > below?
>
> get rid of using gd->fdt_blob for finding the node_offset.
> Details in https://patchwork.ozlabs.org/patch/1044415/

Ah, ok. But still, here you're introducing yet more references to gd->fdt_blob.
That wouldn't work with a live tree, either, or would it?

Regards,
Simon

>
> -/*
> - * FPGA Manager to program the FPGA. This is the interface used by
> FPGA driver.
> - * Return 0 for sucess, non-zero for error.
> - */
> +ofnode get_fpga_mgr_ofnode(void)
> +{
> + int node_offset;
> +
> + fdtdec_find_aliases_for_id(gd->fdt_blob, "fpga_mgr",
>
> nit: using of live functions would be better to get rid of gd->.
>
> + COMPAT_ALTERA_SOCFPGA_FPGA0,
> + &node_offset, 1);
>
> Thanks.
> >
> > >
> > > -Removed @0 for fs-loader node
> > >
> > > changes for v9
> > > - Support data offset
> > > - Added default DDR load address
> > > - Squashed the image.h
> > > - Changed to phandle
> > > - Ensure the DDR is fully up running by checking the gd->ram
> > >
> > > changes for v8
> > > - Added codes to discern bitstream type based on fpga node name.
> > >
> > > 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 | 17 +
> > > .../include/mach/fpga_manager_arria10.h | 39 +-
> > > drivers/fpga/socfpga_arria10.c | 497
> > > ++++++++++++++++++++-
> > > include/image.h | 4 +
> > > 4 files changed, 542 insertions(+), 15 deletions(-)
> > >
> > > diff --git a/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > > b/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > > index 998d811210..cc761967c7 100644
> > > --- a/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > > +++ b/arch/arm/dts/socfpga_arria10_socdk_sdmmc.dts
> > > @@ -18,6 +18,23 @@
> > > /dts-v1/;
> > > #include "socfpga_arria10_socdk.dtsi"
> > >
> > > +/ {
> > > + chosen {
> > > + firmware-loader = <&fs_loader0>;
> > > + };
> > > +
> > > + fs_loader0: fs-loader {
> > > + 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";
> > > +};
> > > +
> > > &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 09d13f6fd3..c5f67714aa 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
> > > +};
> > > +
> > > +enum rbf_security {
> > > + invalid,
> > > + unencrypted,
> > > + encrypted
> > > +};
> > > +
> > > +struct rbf_info {
> > > + enum rbf_type section;
> > > + enum rbf_security security;
> > > +};
> > > +
> > > +struct fpga_loadfs_info {
> > > + fpga_fs_info *fpga_fsinfo;
> > > + u32 remaining;
> > > + u32 offset;
> > > + struct rbf_info rbfinfo;
> > > +};
> > > +
> > > /* Functions */
> > > int fpgamgr_program_init(u32 * rbf_data, size_t rbf_size);
> > > int fpgamgr_program_finish(void);
> > > int is_fpgamgr_user_mode(void);
> > > int fpgamgr_wait_early_user_mode(void);
> > > -
> > > +const char *get_fpga_filename(void);
> > > +int socfpga_loadfs(fpga_fs_info *fpga_fsinfo, const void *buf,
> > > size_t bsize,
> > > + u32 offset);
> > > +void fpgamgr_program(const void *buf, size_t bsize, u32 offset);
> > > #endif /* __ASSEMBLY__ */
> > >
> > > #endif /* _FPGA_MANAGER_ARRIA10_H_ */
> > > diff --git a/drivers/fpga/socfpga_arria10.c
> > > b/drivers/fpga/socfpga_arria10.c
> > > index 9499d1a014..9df2c430d7 100644
> > > --- a/drivers/fpga/socfpga_arria10.c
> > > +++ b/drivers/fpga/socfpga_arria10.c
> > > @@ -1,8 +1,7 @@
> > > // SPDX-License-Identifier: GPL-2.0
> > > /*
> > > - * Copyright (C) 2017 Intel Corporation <www.intel.com>
> > > + * Copyright (C) 2017-2019 Intel Corporation <www.intel.com>
> > > */
> > > -
> > > #include <asm/io.h>
> > > #include <asm/arch/fpga_manager.h>
> > > #include <asm/arch/reset_manager.h>
> > > @@ -10,8 +9,11 @@
> > > #include <asm/arch/sdram.h>
> > > #include <asm/arch/misc.h>
> > > #include <altera.h>
> > > +#include <asm/arch/pinmux.h>
> > > #include <common.h>
> > > +#include <dm/ofnode.h>
> > > #include <errno.h>
> > > +#include <fs_loader.h>
> > > #include <wait_bit.h>
> > > #include <watchdog.h>
> > >
> > > @@ -21,6 +23,9 @@
> > > #define COMPRESSION_OFFSET 229
> > > #define FPGA_TIMEOUT_MSEC 1000 /* timeout in ms */
> > > #define FPGA_TIMEOUT_CNT 0x1000000
> > > +#define DEFAULT_DDR_LOAD_ADDRESS 0x400
> > > +
> > > +DECLARE_GLOBAL_DATA_PTR;
> > >
> > > static const struct socfpga_fpga_manager *fpga_manager_base =
> > > (void *)SOCFPGA_FPGAMGRREGS_ADDRESS;
> > > @@ -448,13 +453,461 @@ int fpgamgr_program_finish(void)
> > > return 0;
> > > }
> > >
> > > -/*
> > > - * FPGA Manager to program the FPGA. This is the interface used by
> > > FPGA driver.
> > > - * Return 0 for sucess, non-zero for error.
> > > - */
> > > +ofnode get_fpga_mgr_ofnode(ofnode from)
> > > +{
> > > + return ofnode_by_compatible(from, "altr,socfpga-a10-fpga-
> > > mgr");
> > > +}
> > > +
> > > +const char *get_fpga_filename(void)
> > > +{
> > > + const char *fpga_filename = NULL;
> > > +
> > > + ofnode fpgamgr_node = get_fpga_mgr_ofnode(ofnode_null());
> > > +
> > > + if (ofnode_valid(fpgamgr_node))
> > > + fpga_filename = ofnode_read_string(fpgamgr_node,
> > > + "altr,bitstream");
> > > +
> > > + return fpga_filename;
> > > +}
> > > +
> > > +static void get_rbf_image_info(struct rbf_info *rbf, u16 *buffer)
> > > +{
> > > + /*
> > > + * Magic ID starting at:
> > > + * -> 1st dword[15:0] in periph.rbf
> > > + * -> 2nd dword[15:0] in core.rbf
> > > + * Note: dword == 32 bits
> > > + */
> > > + u32 word_reading_max = 2;
> > > + u32 i;
> > > +
> > > + for (i = 0; i < word_reading_max; i++) {
> > > + if (*(buffer + i) ==
> > > FPGA_SOCFPGA_A10_RBF_UNENCRYPTED) {
> > > + rbf->security = unencrypted;
> > > + } else if (*(buffer + i) ==
> > > FPGA_SOCFPGA_A10_RBF_ENCRYPTED) {
> > > + rbf->security = encrypted;
> > > + } else if (*(buffer + i + 1) ==
> > > + FPGA_SOCFPGA_A10_RBF_UNENCRYPTED)
> > > {
> > > + rbf->security = unencrypted;
> > > + } else if (*(buffer + i + 1) ==
> > > + FPGA_SOCFPGA_A10_RBF_ENCRYPTED) {
> > > + rbf->security = encrypted;
> > > + } else {
> > > + rbf->security = invalid;
> > > + continue;
> > > + }
> > > +
> > > + /* PERIPH RBF(buffer + i + 1), CORE RBF(buffer + i
> > > + 2) */
> > > + if (*(buffer + i + 1) ==
> > > FPGA_SOCFPGA_A10_RBF_PERIPH) {
> > > + rbf->section = periph_section;
> > > + break;
> > > + } else if (*(buffer + i + 1) ==
> > > FPGA_SOCFPGA_A10_RBF_CORE) {
> > > + rbf->section = core_section;
> > > + break;
> > > + } else if (*(buffer + i + 2) ==
> > > FPGA_SOCFPGA_A10_RBF_PERIPH) {
> > > + rbf->section = periph_section;
> > > + break;
> > > + } else if (*(buffer + i + 2) ==
> > > FPGA_SOCFPGA_A10_RBF_CORE) {
> > > + rbf->section = core_section;
> > > + break;
> > > + }
> > > +
> > > + rbf->section = unknown;
> > > + break;
> > > +
> > > + WATCHDOG_RESET();
> > > + }
> > > +}
> > > +
> > > +#ifdef CONFIG_FS_LOADER
> > > +static int first_loading_rbf_to_buffer(struct udevice *dev,
> > > + struct fpga_loadfs_info
> > > *fpga_loadfs,
> > > + u32 *buffer, size_t *buffer_bsize)
> > > +{
> > > + u32 *buffer_p = (u32 *)*buffer;
> > > + u32 *loadable = buffer_p;
> > > + size_t buffer_size = *buffer_bsize;
> > > + size_t fit_size;
> > > + int ret, i, count, confs_noffset, images_noffset,
> > > rbf_offset, rbf_size;
> > > + const char *fpga_node_name = NULL;
> > > + const char *uname = NULL;
> > > +
> > > + /* Load image header into buffer */
> > > + ret = request_firmware_into_buf(dev,
> > > + fpga_loadfs->fpga_fsinfo-
> > > >filename,
> > > + buffer_p, sizeof(struct
> > > image_header),
> > > + 0);
> > > + if (ret < 0) {
> > > + debug("FPGA: Failed to read image header from
> > > flash.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + if (image_get_magic((struct image_header *)buffer_p) !=
> > > FDT_MAGIC) {
> > > + debug("FPGA: No FDT magic was found.\n");
> > > + return -EBADF;
> > > + }
> > > +
> > > + fit_size = fdt_totalsize(buffer_p);
> > > +
> > > + if (fit_size > buffer_size) {
> > > + debug("FPGA: FIT image is larger than available
> > > buffer.\n");
> > > + debug("Please use FIT external data or increasing
> > > buffer.\n");
> > > + return -ENOMEM;
> > > + }
> > > +
> > > + /* Load entire FIT into buffer */
> > > + ret = request_firmware_into_buf(dev,
> > > + fpga_loadfs->fpga_fsinfo-
> > > >filename,
> > > + buffer_p, fit_size, 0);
> > > + if (ret < 0)
> > > + return ret;
> > > +
> > > + ret = fit_check_format(buffer_p);
> > > + if (!ret) {
> > > + debug("FPGA: No valid FIT image was found.\n");
> > > + return -EBADF;
> > > + }
> > > +
> > > + confs_noffset = fdt_path_offset(buffer_p, FIT_CONFS_PATH);
> > > + images_noffset = fdt_path_offset(buffer_p,
> > > FIT_IMAGES_PATH);
> > > + if (confs_noffset < 0 || images_noffset < 0) {
> > > + debug("FPGA: No Configurations or images nodes
> > > were found.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + /* Get default configuration unit name from default
> > > property */
> > > + confs_noffset = fit_conf_get_node(buffer_p, NULL);
> > > + if (confs_noffset < 0) {
> > > + debug("FPGA: No default configuration was found in
> > > config.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + count = fit_conf_get_prop_node_count(buffer_p,
> > > confs_noffset,
> > > + FIT_FPGA_PROP);
> > > + if (count < 0) {
> > > + debug("FPGA: Invalid configuration format for FPGA
> > > node.\n");
> > > + return count;
> > > + }
> > > + debug("FPGA: FPGA node count: %d\n", count);
> > > +
> > > + for (i = 0; i < count; i++) {
> > > + images_noffset =
> > > fit_conf_get_prop_node_index(buffer_p,
> > > + confs
> > > _noffset,
> > > + FIT_F
> > > PGA_PROP, i);
> > > + uname = fit_get_name(buffer_p, images_noffset,
> > > NULL);
> > > + if (uname) {
> > > + debug("FPGA: %s\n", uname);
> > > +
> > > + if (strstr(uname, "fpga-periph") &&
> > > + (!is_fpgamgr_early_user_mode() ||
> > > + is_fpgamgr_user_mode())) {
> > > + fpga_node_name = uname;
> > > + printf("FPGA: Start to program ");
> > > + printf("peripheral/full bitstream
> > > ...\n");
> > > + break;
> > > + } else if (strstr(uname, "fpga-core") &&
> > > + (is_fpgamgr_early_user_mod
> > > e() &&
> > > + !is_fpgamgr_user_mode()))
> > > {
> > > + fpga_node_name = uname;
> > > + printf("FPGA: Start to program
> > > core ");
> > > + printf("bitstream ...\n");
> > > + break;
> > > + }
> > > + }
> > > + WATCHDOG_RESET();
> > > + }
> > > +
> > > + if (!fpga_node_name) {
> > > + debug("FPGA: No suitable bitstream was found,
> > > count: %d.\n", i);
> > > + return 1;
> > > + }
> > > +
> > > + images_noffset = fit_image_get_node(buffer_p,
> > > fpga_node_name);
> > > + if (images_noffset < 0) {
> > > + debug("FPGA: No node '%s' was found in FIT.\n",
> > > + fpga_node_name);
> > > + return -ENOENT;
> > > + }
> > > +
> > > + if (!fit_image_get_data_position(buffer_p, images_noffset,
> > > + &rbf_offset)) {
> > > + debug("FPGA: Data position was found.\n");
> > > + } else if (!fit_image_get_data_offset(buffer_p,
> > > images_noffset,
> > > + &rbf_offset)) {
> > > + /*
> > > + * For FIT with external data, figure out where
> > > + * the external images start. This is the base
> > > + * for the data-offset properties in each image.
> > > + */
> > > + rbf_offset += ((fdt_totalsize(buffer_p) + 3) &
> > > ~3);
> > > + debug("FPGA: Data offset was found.\n");
> > > + } else {
> > > + debug("FPGA: No data position/offset was
> > > found.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + ret = fit_image_get_data_size(buffer_p, images_noffset,
> > > &rbf_size);
> > > + if (ret < 0) {
> > > + debug("FPGA: No data size was found (err=%d).\n",
> > > ret);
> > > + return -ENOENT;
> > > + }
> > > +
> > > + if (gd->ram_size < rbf_size) {
> > > + debug("FPGA: Using default OCRAM buffer and
> > > size.\n");
> > > + } else {
> > > + ret = fit_image_get_load(buffer_p, images_noffset,
> > > + (ulong *)loadable);
> > > + if (ret < 0) {
> > > + buffer_p = (u32
> > > *)DEFAULT_DDR_LOAD_ADDRESS;
> > > + debug("FPGA: No loadable was found.\n");
> > > + debug("FPGA: Using default DDR load
> > > address: 0x%x .\n",
> > > + DEFAULT_DDR_LOAD_ADDRESS);
> > > + } else {
> > > + buffer_p = (u32 *)*loadable;
> > > + debug("FPGA: Found loadable address =
> > > 0x%x.\n",
> > > + *loadable);
> > > + }
> > > +
> > > + buffer_size = rbf_size;
> > > + }
> > > +
> > > + debug("FPGA: External data: offset = 0x%x, size =
> > > 0x%x.\n",
> > > + rbf_offset, rbf_size);
> > > +
> > > + fpga_loadfs->remaining = rbf_size;
> > > +
> > > + /*
> > > + * Determine buffer size vs bitstream size, and
> > > calculating number of
> > > + * chunk by chunk transfer is required due to smaller
> > > buffer size
> > > + * compare to bitstream
> > > + */
> > > + if (rbf_size <= buffer_size) {
> > > + /* Loading whole bitstream into buffer */
> > > + buffer_size = rbf_size;
> > > + fpga_loadfs->remaining = 0;
> > > + } else {
> > > + fpga_loadfs->remaining -= buffer_size;
> > > + }
> > > +
> > > + fpga_loadfs->offset = rbf_offset;
> > > + /* Loading bitstream into buffer */
> > > + ret = request_firmware_into_buf(dev,
> > > + fpga_loadfs->fpga_fsinfo-
> > > >filename,
> > > + buffer_p, buffer_size,
> > > + fpga_loadfs->offset);
> > > + if (ret < 0) {
> > > + debug("FPGA: Failed to read bitstream from
> > > flash.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + /* Getting info about bitstream types */
> > > + get_rbf_image_info(&fpga_loadfs->rbfinfo, (u16
> > > *)buffer_p);
> > > +
> > > + /* Update next reading bitstream offset */
> > > + fpga_loadfs->offset += buffer_size;
> > > +
> > > + /* Update the final addr for bitstream */
> > > + *buffer = (u32)buffer_p;
> > > +
> > > + /* Update the size of bitstream to be programmed into FPGA
> > > */
> > > + *buffer_bsize = buffer_size;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int subsequent_loading_rbf_to_buffer(struct udevice *dev,
> > > + struct fpga_loadfs_info
> > > *fpga_loadfs,
> > > + u32 *buffer, size_t
> > > *buffer_bsize)
> > > +{
> > > + int ret = 0;
> > > + u32 *buffer_p = (u32 *)*buffer;
> > > +
> > > + /* Read the bitstream chunk by chunk. */
> > > + if (fpga_loadfs->remaining > *buffer_bsize) {
> > > + fpga_loadfs->remaining -= *buffer_bsize;
> > > + } else {
> > > + *buffer_bsize = fpga_loadfs->remaining;
> > > + fpga_loadfs->remaining = 0;
> > > + }
> > > +
> > > + ret = request_firmware_into_buf(dev,
> > > + fpga_loadfs->fpga_fsinfo-
> > > >filename,
> > > + buffer_p, *buffer_bsize,
> > > + fpga_loadfs->offset);
> > > + if (ret < 0) {
> > > + debug("FPGA: Failed to read bitstream from
> > > flash.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + /* Update next reading bitstream offset */
> > > + fpga_loadfs->offset += *buffer_bsize;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int socfpga_loadfs(fpga_fs_info *fpga_fsinfo, const void *buf,
> > > size_t bsize,
> > > + u32 offset)
> > > +{
> > > + struct fpga_loadfs_info fpga_loadfs;
> > > + struct udevice *dev;
> > > + int status, ret, size;
> > > + u32 buffer = (uintptr_t)buf;
> > > + size_t buffer_sizebytes = bsize;
> > > + size_t buffer_sizebytes_ori = bsize;
> > > + size_t total_sizeof_image = 0;
> > > + ofnode node;
> > > + const fdt32_t *phandle_p;
> > > + u32 phandle;
> > > +
> > > + node = get_fpga_mgr_ofnode(ofnode_null());
> > > +
> > > + if (ofnode_valid(node)) {
> > > + phandle_p = ofnode_get_property(node, "firmware-
> > > loader", &size);
> > > + if (!phandle_p) {
> > > + node = ofnode_path("/chosen");
> > > + if (!ofnode_valid(node)) {
> > > + debug("FPGA: /chosen node was not
> > > found.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + phandle_p = ofnode_get_property(node,
> > > "firmware-loader",
> > > + &size);
> > > + if (!phandle_p) {
> > > + debug("FPGA: firmware-loader
> > > property was not");
> > > + debug(" found.\n");
> > > + return -ENOENT;
> > > + }
> > > + }
> > > + } else {
> > > + debug("FPGA: FPGA manager node was not found.\n");
> > > + return -ENOENT;
> > > + }
> > > +
> > > + phandle = fdt32_to_cpu(*phandle_p);
> > > + ret =
> > > uclass_get_device_by_phandle_id(UCLASS_FS_FIRMWARE_LOADER,
> > > + phandle, &dev);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + memset(&fpga_loadfs, 0, sizeof(fpga_loadfs));
> > > +
> > > + fpga_loadfs.fpga_fsinfo = fpga_fsinfo;
> > > + fpga_loadfs.offset = offset;
> > > +
> > > + printf("FPGA: Checking FPGA configuration setting ...\n");
> > > +
> > > + /*
> > > + * Note: Both buffer and buffer_sizebytes values can be
> > > altered by
> > > + * function below.
> > > + */
> > > + ret = first_loading_rbf_to_buffer(dev, &fpga_loadfs,
> > > &buffer,
> > > + &buffer_sizebytes);
> > > + if (ret == 1) {
> > > + printf("FPGA: Skipping configuration ...\n");
> > > + return 0;
> > > + } else if (ret) {
> > > + return ret;
> > > + }
> > > +
> > > + if (fpga_loadfs.rbfinfo.section == core_section &&
> > > + !(is_fpgamgr_early_user_mode() &&
> > > !is_fpgamgr_user_mode())) {
> > > + debug("FPGA : Must be in Early Release mode to
> > > program ");
> > > + debug("core bitstream.\n");
> > > + return -EPERM;
> > > + }
> > > +
> > > + /* Disable all signals from HPS peripheral controller to
> > > FPGA */
> > > + writel(0, &system_manager_base->fpgaintf_en_global);
> > > +
> > > + /* Disable all axi bridges (hps2fpga, lwhps2fpga &
> > > fpga2hps) */
> > > + socfpga_bridges_reset();
> > > +
> > > + if (fpga_loadfs.rbfinfo.section == periph_section) {
> > > + /* Initialize the FPGA Manager */
> > > + status = fpgamgr_program_init((u32 *)buffer,
> > > buffer_sizebytes);
> > > + if (status) {
> > > + debug("FPGA: Init with peripheral
> > > bitstream failed.\n");
> > > + return -EPERM;
> > > + }
> > > + }
> > > +
> > > + /* Transfer bitstream to FPGA Manager */
> > > + fpgamgr_program_write((void *)buffer, buffer_sizebytes);
> > > +
> > > + total_sizeof_image += buffer_sizebytes;
> > > +
> > > + while (fpga_loadfs.remaining) {
> > > + ret = subsequent_loading_rbf_to_buffer(dev,
> > > + &fpga_load
> > > fs,
> > > + &buffer,
> > > + &buffer_si
> > > zebytes_ori);
> > > +
> > > + if (ret)
> > > + return ret;
> > > +
> > > + /* Transfer data to FPGA Manager */
> > > + fpgamgr_program_write((void *)buffer,
> > > + buffer_sizebytes_ori);
> > > +
> > > + total_sizeof_image += buffer_sizebytes_ori;
> > > +
> > > + WATCHDOG_RESET();
> > > + }
> > > +
> > > + if (fpga_loadfs.rbfinfo.section == periph_section) {
> > > + if (fpgamgr_wait_early_user_mode() != -ETIMEDOUT)
> > > {
> > > + config_pins(gd->fdt_blob, "shared");
> > > + puts("FPGA: Early Release Succeeded.\n");
> > > + } else {
> > > + debug("FPGA: Failed to see Early
> > > Release.\n");
> > > + return -EIO;
> > > + }
> > > +
> > > + /* For monolithic bitstream */
> > > + if (is_fpgamgr_user_mode()) {
> > > + /* Ensure the FPGA entering config done */
> > > + status = fpgamgr_program_finish();
> > > + if (status)
> > > + return status;
> > > +
> > > + config_pins(gd->fdt_blob, "fpga");
> > > + puts("FPGA: Enter user mode.\n");
> > > + }
> > > + } else if (fpga_loadfs.rbfinfo.section == core_section) {
> > > + /* Ensure the FPGA entering config done */
> > > + status = fpgamgr_program_finish();
> > > + if (status)
> > > + return status;
> > > +
> > > + config_pins(gd->fdt_blob, "fpga");
> > > + puts("FPGA: Enter user mode.\n");
> > > + } else {
> > > + debug("FPGA: Config Error: Unsupported bitstream
> > > type.\n");
> > > + return -ENOEXEC;
> > > + }
> > > +
> > > + return (int)total_sizeof_image;
> > > +}
> > > +
> > > +void fpgamgr_program(const void *buf, size_t bsize, u32 offset)
> > > +{
> > > + fpga_fs_info fpga_fsinfo;
> > > +
> > > + fpga_fsinfo.filename = get_fpga_filename();
> > > +
> > > + if (fpga_fsinfo.filename)
> > > + socfpga_loadfs(&fpga_fsinfo, buf, bsize, offset);
> > > +}
> > > +#endif
> > > +
> > > +/* This function is used to load the core bitstream from the
> > > OCRAM. */
> > > int socfpga_load(Altera_desc *desc, const void *rbf_data, size_t
> > > rbf_size)
> > > {
> > > - int status;
> > > + unsigned long status;
> > > + struct rbf_info rbfinfo;
> > > +
> > > + memset(&rbfinfo, 0, sizeof(rbfinfo));
> > >
> > > /* Disable all signals from hps peripheral controller to
> > > fpga */
> > > writel(0, &system_manager_base->fpgaintf_en_global);
> > > @@ -462,13 +915,31 @@ int socfpga_load(Altera_desc *desc, const
> > > void *rbf_data, size_t rbf_size)
> > > /* Disable all axi bridge (hps2fpga, lwhps2fpga &
> > > fpga2hps) */
> > > socfpga_bridges_reset();
> > >
> > > - /* Initialize the FPGA Manager */
> > > - status = fpgamgr_program_init((u32 *)rbf_data, rbf_size);
> > > - if (status)
> > > - return status;
> > > + /* Getting info about bitstream types */
> > > + get_rbf_image_info(&rbfinfo, (u16 *)rbf_data);
> > > +
> > > + if (rbfinfo.section == periph_section) {
> > > + /* Initialize the FPGA Manager */
> > > + status = fpgamgr_program_init((u32 *)rbf_data,
> > > rbf_size);
> > > + if (status)
> > > + return status;
> > > + }
> > >
> > > - /* Write the RBF data to FPGA Manager */
> > > + if (rbfinfo.section == core_section &&
> > > + !(is_fpgamgr_early_user_mode() &&
> > > !is_fpgamgr_user_mode())) {
> > > + debug("FPGA : Must be in early release mode to
> > > program ");
> > > + debug("core bitstream.\n");
> > > + return -EPERM;
> > > + }
> > > +
> > > + /* Write the bitstream to FPGA Manager */
> > > fpgamgr_program_write(rbf_data, rbf_size);
> > >
> > > - return fpgamgr_program_finish();
> > > + status = fpgamgr_program_finish();
> > > + if (status) {
> > > + config_pins(gd->fdt_blob, "fpga");
> > > + puts("FPGA: Enter user mode.\n");
> > > + }
> > > +
> > > + return status;
> > > }
> > > diff --git a/include/image.h b/include/image.h
> > > index 765ffecee0..cc976f70ce 100644
> > > --- a/include/image.h
> > > +++ b/include/image.h
> > > @@ -1046,6 +1046,10 @@ int fit_check_format(const void *fit);
> > >
> > > int fit_conf_find_compat(const void *fit, const void *fdt);
> > > int fit_conf_get_node(const void *fit, const char *conf_uname);
> > > +int fit_conf_get_prop_node_count(const void *fit, int noffset,
> > > + const char *prop_name);
> > > +int fit_conf_get_prop_node_index(const void *fit, int noffset,
> > > + const char *prop_name, int index);
> > >
> > > /**
> > > * fit_conf_get_prop_node() - Get node refered to by a
> > > configuration
> > >