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>
This commit is contained in:
Tom Rini 2018-02-12 09:51:33 -05:00
parent fbca0e66cc
commit 34a5c4257a
7 changed files with 0 additions and 333 deletions

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@ -171,10 +171,6 @@ static inline void _outsw(volatile u16 *port, const void *buf, int ns)
#define insw(port, buf, ns) _insw((u16 *)port, buf, ns)
#define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns)
/* For systemace.c */
#define out16(addr, val)
#define in16(addr) 0
#include <iotrace.h>
#include <asm/types.h>

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@ -81,9 +81,6 @@ CONFIG_DEVRES=y
CONFIG_DEBUG_DEVRES=y
CONFIG_ADC=y
CONFIG_ADC_SANDBOX=y
CONFIG_SYSTEMACE=y
CONFIG_SYS_SYSTEMACE_BASE=0x0
CONFIG_SYS_SYSTEMACE_WIDTH=16
CONFIG_CLK=y
CONFIG_CPU=y
CONFIG_DM_DEMO=y

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@ -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

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@ -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

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@ -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,
};

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@ -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

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@ -32,7 +32,6 @@ enum if_type {
IF_TYPE_SD,
IF_TYPE_SATA,
IF_TYPE_HOST,
IF_TYPE_SYSTEMACE,
IF_TYPE_NVME,
IF_TYPE_EFI,