SystemACE: Remove

This driver is no longer used on any supported platform in U-Boot and
there is no interest in maintaining it further from people that have
used it historically.

Cc: Simon Glass <sjg@chromium.org>
Cc: Michal Simek <michal.simek@xilinx.com>
c: Alexey Brodkin <alexey.brodkin@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>

4 files changed, 0 insertions, 325 deletions

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 73836ada09..15fd1bcb2b 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -44,22 +44,3 @@ config IDE
 	  This allows access to raw blocks and filesystems on an IDE drive
 	  from U-Boot. See also CMD_IDE which provides an 'ide' command for
 	  performing various IDE operations.
-
-config SYSTEMACE
-	bool "Xilinx SystemACE support"
-	select HAVE_BLOCK_DEVICE
-	help
-	  Adding this option adds support for Xilinx SystemACE chips attached
-	  via some sort of local bus. The address of the chip must also be
-	  defined in the CONFIG_SYS_SYSTEMACE_BASE macro.
-
-	  When SystemACE support is added, the "ace" device type becomes
-	  available to the fat commands, i.e. fatls.
-
-config SYS_SYSTEMACE_BASE
-	hex "Base address of SystemACE chip"
-	depends on SYSTEMACE
-
-config SYS_SYSTEMACE_WIDTH
-	int "Word size of access to the of SystemACE chip"
-	depends on SYSTEMACE
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index d06a598f14..3d52bd8f46 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -13,5 +13,4 @@ endif
 
 obj-$(CONFIG_IDE) += ide.o
 obj-$(CONFIG_SANDBOX) += sandbox.o
-obj-$(CONFIG_SYSTEMACE) += systemace.o
 obj-$(CONFIG_BLOCK_CACHE) += blkcache.o
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index bfda2211f0..c32aee6760 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -22,7 +22,6 @@ static const char *if_typename_str[IF_TYPE_COUNT] = {
 	[IF_TYPE_SD]		= "sd",
 	[IF_TYPE_SATA]		= "sata",
 	[IF_TYPE_HOST]		= "host",
-	[IF_TYPE_SYSTEMACE]	= "ace",
 	[IF_TYPE_NVME]		= "nvme",
 	[IF_TYPE_EFI]		= "efi",
 };
@@ -37,7 +36,6 @@ static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
 	[IF_TYPE_SD]		= UCLASS_INVALID,
 	[IF_TYPE_SATA]		= UCLASS_AHCI,
 	[IF_TYPE_HOST]		= UCLASS_ROOT,
-	[IF_TYPE_SYSTEMACE]	= UCLASS_INVALID,
 	[IF_TYPE_NVME]		= UCLASS_NVME,
 	[IF_TYPE_EFI]		= UCLASS_EFI,
 };
diff --git a/drivers/block/systemace.c b/drivers/block/systemace.c
deleted file mode 100644
index 9392beaf05..0000000000
--- a/drivers/block/systemace.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * Copyright (c) 2004 Picture Elements, Inc.
- *    Stephen Williams (XXXXXXXXXXXXXXXX)
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-/*
- * The Xilinx SystemACE chip support is activated by defining
- * CONFIG_SYSTEMACE to turn on support, and CONFIG_SYS_SYSTEMACE_BASE
- * to set the base address of the device. This code currently
- * assumes that the chip is connected via a byte-wide bus.
- *
- * The CONFIG_SYSTEMACE also adds to fat support the device class
- * "ace" that allows the user to execute "fatls ace 0" and the
- * like. This works by making the systemace_get_dev function
- * available to cmd_fat.c:get_dev and filling in a block device
- * description that has all the bits needed for FAT support to
- * read sectors.
- *
- * According to Xilinx technical support, before accessing the
- * SystemACE CF you need to set the following control bits:
- *      FORCECFGMODE : 1
- *      CFGMODE : 0
- *      CFGSTART : 0
- */
-
-#include <common.h>
-#include <command.h>
-#include <dm.h>
-#include <part.h>
-#include <asm/io.h>
-
-/*
- * The ace_readw and writew functions read/write 16bit words, but the
- * offset value is the BYTE offset as most used in the Xilinx
- * datasheet for the SystemACE chip. The CONFIG_SYS_SYSTEMACE_BASE is defined
- * to be the base address for the chip, usually in the local
- * peripheral bus.
- */
-
-static u32 base = CONFIG_SYS_SYSTEMACE_BASE;
-static u32 width = CONFIG_SYS_SYSTEMACE_WIDTH;
-
-static void ace_writew(u16 val, unsigned off)
-{
-	if (width == 8) {
-#if !defined(__BIG_ENDIAN)
-		writeb(val >> 8, base + off);
-		writeb(val, base + off + 1);
-#else
-		writeb(val, base + off);
-		writeb(val >> 8, base + off + 1);
-#endif
-	} else
-		out16(base + off, val);
-}
-
-static u16 ace_readw(unsigned off)
-{
-	if (width == 8) {
-#if !defined(__BIG_ENDIAN)
-		return (readb(base + off) << 8) | readb(base + off + 1);
-#else
-		return readb(base + off) | (readb(base + off + 1) << 8);
-#endif
-	}
-
-	return in16(base + off);
-}
-
-#ifndef CONFIG_BLK
-static struct blk_desc systemace_dev = { 0 };
-#endif
-
-static int get_cf_lock(void)
-{
-	int retry = 10;
-
-	/* CONTROLREG = LOCKREG */
-	unsigned val = ace_readw(0x18);
-	val |= 0x0002;
-	ace_writew((val & 0xffff), 0x18);
-
-	/* Wait for MPULOCK in STATUSREG[15:0] */
-	while (!(ace_readw(0x04) & 0x0002)) {
-
-		if (retry < 0)
-			return -1;
-
-		udelay(100000);
-		retry -= 1;
-	}
-
-	return 0;
-}
-
-static void release_cf_lock(void)
-{
-	unsigned val = ace_readw(0x18);
-	val &= ~(0x0002);
-	ace_writew((val & 0xffff), 0x18);
-}
-
-/*
- * This function is called (by dereferencing the block_read pointer in
- * the dev_desc) to read blocks of data. The return value is the
- * number of blocks read. A zero return indicates an error.
- */
-#ifdef CONFIG_BLK
-static unsigned long systemace_read(struct udevice *dev, unsigned long start,
-				    lbaint_t blkcnt, void *buffer)
-#else
-static unsigned long systemace_read(struct blk_desc *block_dev,
-				    unsigned long start, lbaint_t blkcnt,
-				    void *buffer)
-#endif
-{
-	int retry;
-	unsigned blk_countdown;
-	unsigned char *dp = buffer;
-	unsigned val;
-
-	if (get_cf_lock() < 0) {
-		unsigned status = ace_readw(0x04);
-
-		/* If CFDETECT is false, card is missing. */
-		if (!(status & 0x0010)) {
-			printf("** CompactFlash card not present. **\n");
-			return 0;
-		}
-
-		printf("**** ACE locked away from me (STATUSREG=%04x)\n",
-		       status);
-		return 0;
-	}
-#ifdef DEBUG_SYSTEMACE
-	printf("... systemace read %lu sectors at %lu\n", blkcnt, start);
-#endif
-
-	retry = 2000;
-	for (;;) {
-		val = ace_readw(0x04);
-
-		/* If CFDETECT is false, card is missing. */
-		if (!(val & 0x0010)) {
-			printf("**** ACE CompactFlash not found.\n");
-			release_cf_lock();
-			return 0;
-		}
-
-		/* If RDYFORCMD, then we are ready to go. */
-		if (val & 0x0100)
-			break;
-
-		if (retry < 0) {
-			printf("**** SystemACE not ready.\n");
-			release_cf_lock();
-			return 0;
-		}
-
-		udelay(1000);
-		retry -= 1;
-	}
-
-	/* The SystemACE can only transfer 256 sectors at a time, so
-	   limit the current chunk of sectors. The blk_countdown
-	   variable is the number of sectors left to transfer. */
-
-	blk_countdown = blkcnt;
-	while (blk_countdown > 0) {
-		unsigned trans = blk_countdown;
-
-		if (trans > 256)
-			trans = 256;
-
-#ifdef DEBUG_SYSTEMACE
-		printf("... transfer %lu sector in a chunk\n", trans);
-#endif
-		/* Write LBA block address */
-		ace_writew((start >> 0) & 0xffff, 0x10);
-		ace_writew((start >> 16) & 0x0fff, 0x12);
-
-		/* NOTE: in the Write Sector count below, a count of 0
-		   causes a transfer of 256, so &0xff gives the right
-		   value for whatever transfer count we want. */
-
-		/* Write sector count | ReadMemCardData. */
-		ace_writew((trans & 0xff) | 0x0300, 0x14);
-
-/*
- * For FPGA configuration via SystemACE is reset unacceptable
- * CFGDONE bit in STATUSREG is not set to 1.
- */
-#ifndef SYSTEMACE_CONFIG_FPGA
-		/* Reset the configruation controller */
-		val = ace_readw(0x18);
-		val |= 0x0080;
-		ace_writew(val, 0x18);
-#endif
-
-		retry = trans * 16;
-		while (retry > 0) {
-			int idx;
-
-			/* Wait for buffer to become ready. */
-			while (!(ace_readw(0x04) & 0x0020)) {
-				udelay(100);
-			}
-
-			/* Read 16 words of 2bytes from the sector buffer. */
-			for (idx = 0; idx < 16; idx += 1) {
-				unsigned short val = ace_readw(0x40);
-				*dp++ = val & 0xff;
-				*dp++ = (val >> 8) & 0xff;
-			}
-
-			retry -= 1;
-		}
-
-		/* Clear the configruation controller reset */
-		val = ace_readw(0x18);
-		val &= ~0x0080;
-		ace_writew(val, 0x18);
-
-		/* Count the blocks we transfer this time. */
-		start += trans;
-		blk_countdown -= trans;
-	}
-
-	release_cf_lock();
-
-	return blkcnt;
-}
-
-#ifdef CONFIG_BLK
-static int systemace_bind(struct udevice *dev)
-{
-	struct blk_desc *bdesc;
-	struct udevice *bdev;
-	int ret;
-
-	ret = blk_create_devicef(dev, "systemace_blk", "blk", IF_TYPE_SYSTEMACE,
-				 -1, 512, 0, &bdev);
-	if (ret) {
-		debug("Cannot create block device\n");
-		return ret;
-	}
-	bdesc = dev_get_uclass_platdata(bdev);
-	bdesc->removable = 1;
-	bdesc->part_type = PART_TYPE_UNKNOWN;
-	bdesc->log2blksz = LOG2(bdesc->blksz);
-
-	/* Ensure the correct bus mode (8/16 bits) gets enabled */
-	ace_writew(width == 8 ? 0 : 0x0001, 0);
-
-	return 0;
-}
-
-static const struct blk_ops systemace_blk_ops = {
-	.read	= systemace_read,
-};
-
-U_BOOT_DRIVER(systemace_blk) = {
-	.name		= "systemace_blk",
-	.id		= UCLASS_BLK,
-	.ops		= &systemace_blk_ops,
-	.bind		= systemace_bind,
-};
-#else
-static int systemace_get_dev(int dev, struct blk_desc **descp)
-{
-	/* The first time through this, the systemace_dev object is
-	   not yet initialized. In that case, fill it in. */
-	if (systemace_dev.blksz == 0) {
-		systemace_dev.if_type = IF_TYPE_UNKNOWN;
-		systemace_dev.devnum = 0;
-		systemace_dev.part_type = PART_TYPE_UNKNOWN;
-		systemace_dev.type = DEV_TYPE_HARDDISK;
-		systemace_dev.blksz = 512;
-		systemace_dev.log2blksz = LOG2(systemace_dev.blksz);
-		systemace_dev.removable = 1;
-		systemace_dev.block_read = systemace_read;
-
-		/*
-		 * Ensure the correct bus mode (8/16 bits) gets enabled
-		 */
-		ace_writew(width == 8 ? 0 : 0x0001, 0);
-
-		part_init(&systemace_dev);
-	}
-	*descp = &systemace_dev;
-
-	return 0;
-}
-
-U_BOOT_LEGACY_BLK(systemace) = {
-	.if_typename	= "ace",
-	.if_type	= IF_TYPE_SYSTEMACE,
-	.max_devs	= 1,
-	.get_dev	= systemace_get_dev,
-};
-#endif