8 files changed, 0 insertions, 701 deletions

diff --git a/drivers/staging/gs_fpgaboot/Kconfig b/drivers/staging/gs_fpgaboot/Kconfig
deleted file mode 100644
index 968a153c4ab6..000000000000
--- a/drivers/staging/gs_fpgaboot/Kconfig
+++ /dev/null
@@ -1,8 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# "xilinx FPGA firmware download, fpgaboot"
-#
-config GS_FPGABOOT
-	tristate "Xilinx FPGA firmware download module"
-	help
-	  Xilinx FPGA firmware download module
diff --git a/drivers/staging/gs_fpgaboot/Makefile b/drivers/staging/gs_fpgaboot/Makefile
deleted file mode 100644
index 33e238be63d6..000000000000
--- a/drivers/staging/gs_fpgaboot/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-gs_fpga-y	+= gs_fpgaboot.o io.o
-obj-$(CONFIG_GS_FPGABOOT)	+= gs_fpga.o
diff --git a/drivers/staging/gs_fpgaboot/README b/drivers/staging/gs_fpgaboot/README
deleted file mode 100644
index ec1235a21bcc..000000000000
--- a/drivers/staging/gs_fpgaboot/README
+++ /dev/null
@@ -1,70 +0,0 @@
-==============================================================================
-Linux Driver Source for Xilinx FPGA firmware download
-==============================================================================
-
-
-TABLE OF CONTENTS.
-
-1.  SUMMARY
-2.  BACKGROUND
-3.  DESIGN
-4.  HOW TO USE
-5.  REFERENCE
-
-1. SUMMARY
-
-	- Download Xilinx FPGA firmware
-	- This module downloads Xilinx FPGA firmware using gpio pins.
-
-2. BACKGROUND
-
-	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 firmware.
-
-3. DESIGN
-
-	- load Xilinx FPGA bitstream format[1] firmware image file 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
-
-4. HOW TO USE
-
-	$ insmod gs_fpga.ko file="xlinx_fpga_top_bitstream.bit"
-	$ rmmod gs_fpga
-
-5. USE CASE (from a mailing list discussion with Greg)
-
-	a. As an FPGA development support tool,
-	During FPGA firmware development, you need to download a new FPGA
-	image frequently.
-	You would do that with a dedicated JTAG, which usually a limited
-	resource in the lab.
-	However, if you use my driver, you don't have to have a dedicated JTAG.
-	This is a real gain :)
-
-	b. For the FPGA that runs without config after the download, which
-	doesn't talk to any of Linux interfaces (such as PCIE).
-
-	We download FPGA firmware from user triggered or some other way, and that's it.
-	Since that FPGA runs on its own, it doesn't require a linux driver
-	after the download.
-
-	c. For the FPGA that requires config after the download, which talk to
-	any of linux interfaces (such as PCIE)
-
-	Then, this type of FPGA config can be put into device tree and have a
-	separate driver (pcie or others), then THAT driver calls my driver to
-	download FPGA firmware during the Linux boot, the take over the device
-	through the interface.
-
-6. REFERENCE
-
-	1. Xilinx APP NOTE XAPP583:
-	  https://www.xilinx.com/support/documentation/application_notes/xapp583-fpga-configuration.pdf
-	2. bitstream file info:
-	  http://home.earthlink.net/~davesullins/software/bitinfo.html
diff --git a/drivers/staging/gs_fpgaboot/TODO b/drivers/staging/gs_fpgaboot/TODO
deleted file mode 100644
index 2d9fb17d606d..000000000000
--- a/drivers/staging/gs_fpgaboot/TODO
+++ /dev/null
@@ -1,7 +0,0 @@
-TODO:
-	- get bus width input instead of hardcoded bus width
-	- get it reviewed
-
-Please send any patches for this driver to Insop Song<insop.song@gainspeed.com>
-and Greg Kroah-Hartman <gregkh@linuxfoundation.org>.
-And please CC to "Staging subsystem" mail list <devel@driverdev.osuosl.org> too.
diff --git a/drivers/staging/gs_fpgaboot/gs_fpgaboot.c b/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
deleted file mode 100644
index 3e154562c64d..000000000000
--- a/drivers/staging/gs_fpgaboot/gs_fpgaboot.c
+++ /dev/null
@@ -1,394 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/device.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/firmware.h>
-#include <asm/unaligned.h>
-
-#include "gs_fpgaboot.h"
-#include "io.h"
-
-#define DEVICE_NAME "device"
-#define CLASS_NAME  "fpgaboot"
-
-static u8 bits_magic[] = {
-	0x0, 0x9, 0xf, 0xf0, 0xf, 0xf0,
-	0xf, 0xf0, 0xf, 0xf0, 0x0, 0x0, 0x1};
-
-/* fake device for request_firmware */
-static struct platform_device	*firmware_pdev;
-
-static char	*file = "xlinx_fpga_firmware.bit";
-module_param(file, charp, 0444);
-MODULE_PARM_DESC(file, "Xilinx FPGA firmware file.");
-
-static void read_bitstream(u8 *bitdata, u8 *buf, int *offset, int rdsize)
-{
-	memcpy(buf, bitdata + *offset, rdsize);
-	*offset += rdsize;
-}
-
-static int readinfo_bitstream(u8 *bitdata, u8 *buf, int size, int *offset)
-{
-	u8 tbuf[2];
-	u16 len;
-
-	/* read section char */
-	read_bitstream(bitdata, tbuf, offset, 1);
-
-	/* read length */
-	read_bitstream(bitdata, tbuf, offset, 2);
-
-	len = get_unaligned_be16(tbuf);
-	if (len >= size) {
-		pr_err("error: readinfo buffer too small\n");
-		return -EINVAL;
-	}
-
-	read_bitstream(bitdata, buf, offset, len);
-	buf[len] = '\0';
-
-	return 0;
-}
-
-/*
- * read bitdata length
- */
-static int readlength_bitstream(u8 *bitdata, int *lendata, int *offset)
-{
-	u8 tbuf[4];
-
-	/* read section char */
-	read_bitstream(bitdata, tbuf, offset, 1);
-
-	/* make sure it is section 'e' */
-	if (tbuf[0] != 'e') {
-		pr_err("error: length section is not 'e', but %c\n", tbuf[0]);
-		return -EINVAL;
-	}
-
-	/* read 4bytes length */
-	read_bitstream(bitdata, tbuf, offset, 4);
-
-	*lendata = get_unaligned_be32(tbuf);
-
-	return 0;
-}
-
-/*
- * read first 13 bytes to check bitstream magic number
- */
-static int readmagic_bitstream(u8 *bitdata, int *offset)
-{
-	u8 buf[13];
-	int r;
-
-	read_bitstream(bitdata, buf, offset, 13);
-	r = memcmp(buf, bits_magic, 13);
-	if (r) {
-		pr_err("error: corrupted header\n");
-		return -EINVAL;
-	}
-	pr_info("bitstream file magic number Ok\n");
-
-	*offset = 13;	/* magic length */
-
-	return 0;
-}
-
-/*
- * NOTE: supports only bitstream format
- */
-static enum fmt_image get_imageformat(void)
-{
-	return f_bit;
-}
-
-static void gs_print_header(struct fpgaimage *fimage)
-{
-	pr_info("file: %s\n", fimage->filename);
-	pr_info("part: %s\n", fimage->part);
-	pr_info("date: %s\n", fimage->date);
-	pr_info("time: %s\n", fimage->time);
-	pr_info("lendata: %d\n", fimage->lendata);
-}
-
-static int gs_read_bitstream(struct fpgaimage *fimage)
-{
-	u8 *bitdata;
-	int offset;
-	int err;
-
-	offset = 0;
-	bitdata = (u8 *)fimage->fw_entry->data;
-
-	err = readmagic_bitstream(bitdata, &offset);
-	if (err)
-		return err;
-
-	err = readinfo_bitstream(bitdata, fimage->filename, MAX_STR, &offset);
-	if (err)
-		return err;
-	err = readinfo_bitstream(bitdata, fimage->part, MAX_STR, &offset);
-	if (err)
-		return err;
-	err = readinfo_bitstream(bitdata, fimage->date, MAX_STR, &offset);
-	if (err)
-		return err;
-	err = readinfo_bitstream(bitdata, fimage->time, MAX_STR, &offset);
-	if (err)
-		return err;
-
-	err = readlength_bitstream(bitdata, &fimage->lendata, &offset);
-	if (err)
-		return err;
-
-	fimage->fpgadata = bitdata + offset;
-
-	return 0;
-}
-
-static int gs_read_image(struct fpgaimage *fimage)
-{
-	int img_fmt;
-	int err;
-
-	img_fmt = get_imageformat();
-
-	switch (img_fmt) {
-	case f_bit:
-		pr_info("image is bitstream format\n");
-		err = gs_read_bitstream(fimage);
-		if (err)
-			return err;
-		break;
-	default:
-		pr_err("unsupported fpga image format\n");
-		return -EINVAL;
-	}
-
-	gs_print_header(fimage);
-
-	return 0;
-}
-
-static int gs_load_image(struct fpgaimage *fimage, char *fw_file)
-{
-	int err;
-
-	pr_info("load fpgaimage %s\n", fw_file);
-
-	err = request_firmware(&fimage->fw_entry, fw_file, &firmware_pdev->dev);
-	if (err != 0) {
-		pr_err("firmware %s is missing, cannot continue.\n", fw_file);
-		return err;
-	}
-
-	return 0;
-}
-
-static int gs_download_image(struct fpgaimage *fimage, enum wbus bus_bytes)
-{
-	u8 *bitdata;
-	int size, i, cnt;
-
-	cnt = 0;
-	bitdata = (u8 *)fimage->fpgadata;
-	size = fimage->lendata;
-
-#ifdef DEBUG_FPGA
-	print_hex_dump_bytes("bitfile sample: ", DUMP_PREFIX_OFFSET,
-			     bitdata, 0x100);
-#endif /* DEBUG_FPGA */
-	if (!xl_supported_prog_bus_width(bus_bytes)) {
-		pr_err("unsupported program bus width %d\n",
-		       bus_bytes);
-		return -EINVAL;
-	}
-
-	/* Bring csi_b, rdwr_b Low and program_b High */
-	xl_program_b(1);
-	xl_rdwr_b(0);
-	xl_csi_b(0);
-
-	/* Configuration reset */
-	xl_program_b(0);
-	msleep(20);
-	xl_program_b(1);
-
-	/* Wait for Device Initialization */
-	while (xl_get_init_b() == 0)
-		;
-
-	pr_info("device init done\n");
-
-	for (i = 0; i < size; i += bus_bytes)
-		xl_shift_bytes_out(bus_bytes, bitdata + i);
-
-	pr_info("program done\n");
-
-	/* Check INIT_B */
-	if (xl_get_init_b() == 0) {
-		pr_err("init_b 0\n");
-		return -EIO;
-	}
-
-	while (xl_get_done_b() == 0) {
-		if (cnt++ > MAX_WAIT_DONE) {
-			pr_err("init_B %d\n", xl_get_init_b());
-			break;
-		}
-	}
-
-	if (cnt > MAX_WAIT_DONE) {
-		pr_err("fpga download fail\n");
-		return -EIO;
-	}
-
-	pr_info("download fpgaimage\n");
-
-	/* Compensate for Special Startup Conditions */
-	xl_shift_cclk(8);
-
-	return 0;
-}
-
-static int gs_release_image(struct fpgaimage *fimage)
-{
-	release_firmware(fimage->fw_entry);
-	pr_info("release fpgaimage\n");
-
-	return 0;
-}
-
-/*
- * NOTE: supports systemmap parallel programming
- */
-static int gs_set_download_method(struct fpgaimage *fimage)
-{
-	pr_info("set program method\n");
-
-	fimage->dmethod = m_systemmap;
-
-	pr_info("systemmap program method\n");
-
-	return 0;
-}
-
-static int init_driver(void)
-{
-	firmware_pdev = platform_device_register_simple("fpgaboot", -1,
-							NULL, 0);
-	return PTR_ERR_OR_ZERO(firmware_pdev);
-}
-
-static int gs_fpgaboot(void)
-{
-	int err;
-	struct fpgaimage	*fimage;
-
-	fimage = kmalloc(sizeof(*fimage), GFP_KERNEL);
-	if (!fimage)
-		return -ENOMEM;
-
-	err = gs_load_image(fimage, file);
-	if (err) {
-		pr_err("gs_load_image error\n");
-		goto err_out1;
-	}
-
-	err = gs_read_image(fimage);
-	if (err) {
-		pr_err("gs_read_image error\n");
-		goto err_out2;
-	}
-
-	err = gs_set_download_method(fimage);
-	if (err) {
-		pr_err("gs_set_download_method error\n");
-		goto err_out2;
-	}
-
-	err = gs_download_image(fimage, bus_2byte);
-	if (err) {
-		pr_err("gs_download_image error\n");
-		goto err_out2;
-	}
-
-	err = gs_release_image(fimage);
-	if (err) {
-		pr_err("gs_release_image error\n");
-		goto err_out1;
-	}
-
-	kfree(fimage);
-	return 0;
-
-err_out2:
-	err = gs_release_image(fimage);
-	if (err)
-		pr_err("gs_release_image error\n");
-err_out1:
-	kfree(fimage);
-
-	return err;
-}
-
-static int __init gs_fpgaboot_init(void)
-{
-	int err;
-
-	pr_info("FPGA DOWNLOAD --->\n");
-
-	pr_info("FPGA image file name: %s\n", file);
-
-	err = init_driver();
-	if (err) {
-		pr_err("FPGA DRIVER INIT FAIL!!\n");
-		return err;
-	}
-
-	err = xl_init_io();
-	if (err) {
-		pr_err("GPIO INIT FAIL!!\n");
-		goto errout;
-	}
-
-	err = gs_fpgaboot();
-	if (err) {
-		pr_err("FPGA DOWNLOAD FAIL!!\n");
-		goto errout;
-	}
-
-	pr_info("FPGA DOWNLOAD DONE <---\n");
-
-	return 0;
-
-errout:
-	platform_device_unregister(firmware_pdev);
-
-	return err;
-}
-
-static void __exit gs_fpgaboot_exit(void)
-{
-	platform_device_unregister(firmware_pdev);
-	pr_info("FPGA image download module removed\n");
-}
-
-module_init(gs_fpgaboot_init);
-module_exit(gs_fpgaboot_exit);
-
-MODULE_AUTHOR("Insop Song");
-MODULE_DESCRIPTION("Xlinix FPGA firmware download");
-MODULE_LICENSE("GPL");
diff --git a/drivers/staging/gs_fpgaboot/gs_fpgaboot.h b/drivers/staging/gs_fpgaboot/gs_fpgaboot.h
deleted file mode 100644
index 5cf12c14cca4..000000000000
--- a/drivers/staging/gs_fpgaboot/gs_fpgaboot.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-
-#include <linux/firmware.h>
-
-#define	MAX_STR	256
-
-enum fmt_image {
-	f_bit,	/* only bitstream is supported */
-	f_rbt,
-	f_bin,
-	f_mcs,
-	f_hex,
-};
-
-enum mdownload {
-	m_systemmap,	/* only system map is supported */
-	m_serial,
-	m_jtag,
-};
-
-/*
- * xilinx fpgaimage information
- * NOTE: use MAX_STR instead of dynamic alloc for simplicity
- */
-struct fpgaimage {
-	enum fmt_image	fmt_img;
-	enum mdownload	dmethod;
-
-	const struct	firmware	*fw_entry;
-
-	/*
-	 * the following can be read from bitstream,
-	 * but other image format should have as well
-	 */
-	char	filename[MAX_STR];
-	char	part[MAX_STR];
-	char	date[MAX_STR];
-	char	time[MAX_STR];
-	int	lendata;
-	u8	*fpgadata;
-};
diff --git a/drivers/staging/gs_fpgaboot/io.c b/drivers/staging/gs_fpgaboot/io.c
deleted file mode 100644
index 80903ec36b76..000000000000
--- a/drivers/staging/gs_fpgaboot/io.c
+++ /dev/null
@@ -1,105 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/device.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/firmware.h>
-#include <linux/io.h>
-
-#include "io.h"
-
-static inline void byte0_out(unsigned char data);
-static inline void byte1_out(unsigned char data);
-static inline void xl_cclk_b(int32_t i);
-
-/* Assert and Deassert CCLK */
-void xl_shift_cclk(int count)
-{
-	int i;
-
-	for (i = 0; i < count; i++) {
-		xl_cclk_b(1);
-		xl_cclk_b(0);
-	}
-}
-
-int xl_supported_prog_bus_width(enum wbus bus_bytes)
-{
-	switch (bus_bytes) {
-	case bus_1byte:
-		break;
-	case bus_2byte:
-		break;
-	default:
-		pr_err("unsupported program bus width %d\n", bus_bytes);
-		return 0;
-	}
-
-	return 1;
-}
-
-/* Serialize byte and clock each bit on target's DIN and CCLK pins */
-void xl_shift_bytes_out(enum wbus bus_byte, unsigned char *pdata)
-{
-	/*
-	 * supports 1 and 2 bytes programming mode
-	 */
-	if (likely(bus_byte == bus_2byte))
-		byte0_out(pdata[0]);
-
-	byte1_out(pdata[1]);
-	xl_shift_cclk(1);
-}
-
-/*
- * generic bit swap for xilinx SYSTEMMAP FPGA programming
- */
-void xl_program_b(int32_t i)
-{
-}
-
-void xl_rdwr_b(int32_t i)
-{
-}
-
-void xl_csi_b(int32_t i)
-{
-}
-
-int xl_get_init_b(void)
-{
-	return -1;
-}
-
-int xl_get_done_b(void)
-{
-	return -1;
-}
-
-static inline void byte0_out(unsigned char data)
-{
-}
-
-static inline void byte1_out(unsigned char data)
-{
-}
-
-static inline void xl_cclk_b(int32_t i)
-{
-}
-
-/*
- * configurable per device type for different I/O config
- */
-int xl_init_io(void)
-{
-	return -1;
-}
diff --git a/drivers/staging/gs_fpgaboot/io.h b/drivers/staging/gs_fpgaboot/io.h
deleted file mode 100644
index 9bd86a92e90f..000000000000
--- a/drivers/staging/gs_fpgaboot/io.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-
-#define GPDIR	0
-#define GPCFG	4	/* open drain or not */
-#define GPDAT	8
-
-/*
- * gpio port and pin definitions
- * NOTE: port number starts from 0
- */
-#define	XL_INITN_PORT	1
-#define	XL_INITN_PIN	14
-#define	XL_RDWRN_PORT	1
-#define	XL_RDWRN_PIN	13
-#define	XL_CCLK_PORT	1
-#define	XL_CCLK_PIN	10
-#define	XL_PROGN_PORT	1
-#define	XL_PROGN_PIN	25
-#define	XL_CSIN_PORT	1
-#define	XL_CSIN_PIN	26
-#define	XL_DONE_PORT	1
-#define	XL_DONE_PIN	27
-
-/*
- * gpio mapping
- *
-	XL_config_D0 – gpio1_31
-	Xl_config_d1 – gpio1_30
-	Xl_config_d2 – gpio1_29
-	Xl_config_d3 – gpio1_28
-	Xl_config_d4 – gpio1_27
-	Xl_config_d5 – gpio1_26
-	Xl_config_d6 – gpio1_25
-	Xl_config_d7 – gpio1_24
-	Xl_config_d8 – gpio1_23
-	Xl_config_d9 – gpio1_22
-	Xl_config_d10 – gpio1_21
-	Xl_config_d11 – gpio1_20
-	Xl_config_d12 – gpio1_19
-	Xl_config_d13 – gpio1_18
-	Xl_config_d14 – gpio1_16
-	Xl_config_d15 – gpio1_14
-*
-*/
-
-/*
- * program bus width in bytes
- */
-enum wbus {
-	bus_1byte	= 1,
-	bus_2byte	= 2,
-};
-
-#define MAX_WAIT_DONE	10000
-
-struct gpiobus {
-	int	ngpio;
-	void __iomem *r[4];
-};
-
-int xl_supported_prog_bus_width(enum wbus bus_bytes);
-
-void xl_program_b(int32_t i);
-void xl_rdwr_b(int32_t i);
-void xl_csi_b(int32_t i);
-
-int xl_get_init_b(void);
-int xl_get_done_b(void);
-
-void xl_shift_cclk(int count);
-void xl_shift_bytes_out(enum wbus bus_byte, unsigned char *pdata);
-
-int xl_init_io(void);