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https://github.com/AsahiLinux/u-boot
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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
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)
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#define insw(port, buf, ns) _insw((u16 *)port, buf, ns)
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#define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns)
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/* For systemace.c */
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#define out16(addr, val)
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#define in16(addr) 0
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#include <iotrace.h>
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#include <asm/types.h>
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@ -81,9 +81,6 @@ CONFIG_DEVRES=y
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CONFIG_DEBUG_DEVRES=y
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CONFIG_ADC=y
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CONFIG_ADC_SANDBOX=y
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CONFIG_SYSTEMACE=y
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CONFIG_SYS_SYSTEMACE_BASE=0x0
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CONFIG_SYS_SYSTEMACE_WIDTH=16
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CONFIG_CLK=y
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CONFIG_CPU=y
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CONFIG_DM_DEMO=y
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@ -44,22 +44,3 @@ config IDE
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This allows access to raw blocks and filesystems on an IDE drive
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from U-Boot. See also CMD_IDE which provides an 'ide' command for
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performing various IDE operations.
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config SYSTEMACE
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bool "Xilinx SystemACE support"
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select HAVE_BLOCK_DEVICE
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help
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Adding this option adds support for Xilinx SystemACE chips attached
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via some sort of local bus. The address of the chip must also be
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defined in the CONFIG_SYS_SYSTEMACE_BASE macro.
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When SystemACE support is added, the "ace" device type becomes
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available to the fat commands, i.e. fatls.
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config SYS_SYSTEMACE_BASE
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hex "Base address of SystemACE chip"
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depends on SYSTEMACE
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config SYS_SYSTEMACE_WIDTH
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int "Word size of access to the of SystemACE chip"
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depends on SYSTEMACE
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@ -13,5 +13,4 @@ endif
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obj-$(CONFIG_IDE) += ide.o
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obj-$(CONFIG_SANDBOX) += sandbox.o
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obj-$(CONFIG_SYSTEMACE) += systemace.o
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obj-$(CONFIG_BLOCK_CACHE) += blkcache.o
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@ -22,7 +22,6 @@ static const char *if_typename_str[IF_TYPE_COUNT] = {
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[IF_TYPE_SD] = "sd",
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[IF_TYPE_SATA] = "sata",
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[IF_TYPE_HOST] = "host",
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[IF_TYPE_SYSTEMACE] = "ace",
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[IF_TYPE_NVME] = "nvme",
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[IF_TYPE_EFI] = "efi",
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};
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@ -37,7 +36,6 @@ static enum uclass_id if_type_uclass_id[IF_TYPE_COUNT] = {
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[IF_TYPE_SD] = UCLASS_INVALID,
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[IF_TYPE_SATA] = UCLASS_AHCI,
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[IF_TYPE_HOST] = UCLASS_ROOT,
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[IF_TYPE_SYSTEMACE] = UCLASS_INVALID,
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[IF_TYPE_NVME] = UCLASS_NVME,
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[IF_TYPE_EFI] = UCLASS_EFI,
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};
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@ -1,303 +0,0 @@
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/*
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* Copyright (c) 2004 Picture Elements, Inc.
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* Stephen Williams (XXXXXXXXXXXXXXXX)
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* The Xilinx SystemACE chip support is activated by defining
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* CONFIG_SYSTEMACE to turn on support, and CONFIG_SYS_SYSTEMACE_BASE
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* to set the base address of the device. This code currently
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* assumes that the chip is connected via a byte-wide bus.
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*
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* The CONFIG_SYSTEMACE also adds to fat support the device class
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* "ace" that allows the user to execute "fatls ace 0" and the
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* like. This works by making the systemace_get_dev function
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* available to cmd_fat.c:get_dev and filling in a block device
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* description that has all the bits needed for FAT support to
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* read sectors.
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*
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* According to Xilinx technical support, before accessing the
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* SystemACE CF you need to set the following control bits:
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* FORCECFGMODE : 1
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* CFGMODE : 0
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* CFGSTART : 0
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <part.h>
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#include <asm/io.h>
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/*
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* The ace_readw and writew functions read/write 16bit words, but the
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* offset value is the BYTE offset as most used in the Xilinx
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* datasheet for the SystemACE chip. The CONFIG_SYS_SYSTEMACE_BASE is defined
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* to be the base address for the chip, usually in the local
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* peripheral bus.
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*/
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static u32 base = CONFIG_SYS_SYSTEMACE_BASE;
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static u32 width = CONFIG_SYS_SYSTEMACE_WIDTH;
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static void ace_writew(u16 val, unsigned off)
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{
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if (width == 8) {
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#if !defined(__BIG_ENDIAN)
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writeb(val >> 8, base + off);
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writeb(val, base + off + 1);
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#else
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writeb(val, base + off);
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writeb(val >> 8, base + off + 1);
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#endif
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} else
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out16(base + off, val);
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}
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static u16 ace_readw(unsigned off)
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{
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if (width == 8) {
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#if !defined(__BIG_ENDIAN)
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return (readb(base + off) << 8) | readb(base + off + 1);
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#else
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return readb(base + off) | (readb(base + off + 1) << 8);
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#endif
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}
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return in16(base + off);
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}
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#ifndef CONFIG_BLK
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static struct blk_desc systemace_dev = { 0 };
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#endif
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static int get_cf_lock(void)
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{
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int retry = 10;
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/* CONTROLREG = LOCKREG */
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unsigned val = ace_readw(0x18);
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val |= 0x0002;
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ace_writew((val & 0xffff), 0x18);
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/* Wait for MPULOCK in STATUSREG[15:0] */
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while (!(ace_readw(0x04) & 0x0002)) {
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if (retry < 0)
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return -1;
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udelay(100000);
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retry -= 1;
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}
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return 0;
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}
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static void release_cf_lock(void)
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{
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unsigned val = ace_readw(0x18);
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val &= ~(0x0002);
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ace_writew((val & 0xffff), 0x18);
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}
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/*
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* This function is called (by dereferencing the block_read pointer in
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* the dev_desc) to read blocks of data. The return value is the
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* number of blocks read. A zero return indicates an error.
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*/
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#ifdef CONFIG_BLK
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static unsigned long systemace_read(struct udevice *dev, unsigned long start,
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lbaint_t blkcnt, void *buffer)
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#else
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static unsigned long systemace_read(struct blk_desc *block_dev,
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unsigned long start, lbaint_t blkcnt,
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void *buffer)
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#endif
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{
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int retry;
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unsigned blk_countdown;
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unsigned char *dp = buffer;
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unsigned val;
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if (get_cf_lock() < 0) {
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unsigned status = ace_readw(0x04);
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/* If CFDETECT is false, card is missing. */
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if (!(status & 0x0010)) {
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printf("** CompactFlash card not present. **\n");
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return 0;
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}
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printf("**** ACE locked away from me (STATUSREG=%04x)\n",
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status);
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return 0;
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}
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#ifdef DEBUG_SYSTEMACE
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printf("... systemace read %lu sectors at %lu\n", blkcnt, start);
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#endif
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retry = 2000;
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for (;;) {
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val = ace_readw(0x04);
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/* If CFDETECT is false, card is missing. */
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if (!(val & 0x0010)) {
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printf("**** ACE CompactFlash not found.\n");
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release_cf_lock();
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return 0;
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}
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/* If RDYFORCMD, then we are ready to go. */
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if (val & 0x0100)
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break;
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if (retry < 0) {
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printf("**** SystemACE not ready.\n");
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release_cf_lock();
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return 0;
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}
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udelay(1000);
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retry -= 1;
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}
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/* The SystemACE can only transfer 256 sectors at a time, so
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limit the current chunk of sectors. The blk_countdown
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variable is the number of sectors left to transfer. */
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blk_countdown = blkcnt;
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while (blk_countdown > 0) {
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unsigned trans = blk_countdown;
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if (trans > 256)
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trans = 256;
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#ifdef DEBUG_SYSTEMACE
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printf("... transfer %lu sector in a chunk\n", trans);
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#endif
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/* Write LBA block address */
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ace_writew((start >> 0) & 0xffff, 0x10);
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ace_writew((start >> 16) & 0x0fff, 0x12);
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/* NOTE: in the Write Sector count below, a count of 0
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causes a transfer of 256, so &0xff gives the right
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value for whatever transfer count we want. */
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/* Write sector count | ReadMemCardData. */
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ace_writew((trans & 0xff) | 0x0300, 0x14);
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/*
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* For FPGA configuration via SystemACE is reset unacceptable
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* CFGDONE bit in STATUSREG is not set to 1.
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*/
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#ifndef SYSTEMACE_CONFIG_FPGA
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/* Reset the configruation controller */
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val = ace_readw(0x18);
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val |= 0x0080;
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ace_writew(val, 0x18);
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#endif
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retry = trans * 16;
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while (retry > 0) {
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int idx;
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/* Wait for buffer to become ready. */
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while (!(ace_readw(0x04) & 0x0020)) {
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udelay(100);
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}
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/* Read 16 words of 2bytes from the sector buffer. */
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for (idx = 0; idx < 16; idx += 1) {
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unsigned short val = ace_readw(0x40);
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*dp++ = val & 0xff;
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*dp++ = (val >> 8) & 0xff;
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}
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retry -= 1;
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}
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/* Clear the configruation controller reset */
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val = ace_readw(0x18);
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val &= ~0x0080;
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ace_writew(val, 0x18);
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/* Count the blocks we transfer this time. */
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start += trans;
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blk_countdown -= trans;
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}
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release_cf_lock();
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return blkcnt;
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}
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#ifdef CONFIG_BLK
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static int systemace_bind(struct udevice *dev)
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{
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struct blk_desc *bdesc;
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struct udevice *bdev;
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int ret;
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ret = blk_create_devicef(dev, "systemace_blk", "blk", IF_TYPE_SYSTEMACE,
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-1, 512, 0, &bdev);
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if (ret) {
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debug("Cannot create block device\n");
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return ret;
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}
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bdesc = dev_get_uclass_platdata(bdev);
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bdesc->removable = 1;
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bdesc->part_type = PART_TYPE_UNKNOWN;
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bdesc->log2blksz = LOG2(bdesc->blksz);
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/* Ensure the correct bus mode (8/16 bits) gets enabled */
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ace_writew(width == 8 ? 0 : 0x0001, 0);
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return 0;
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}
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static const struct blk_ops systemace_blk_ops = {
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.read = systemace_read,
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};
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U_BOOT_DRIVER(systemace_blk) = {
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.name = "systemace_blk",
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.id = UCLASS_BLK,
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.ops = &systemace_blk_ops,
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.bind = systemace_bind,
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};
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#else
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static int systemace_get_dev(int dev, struct blk_desc **descp)
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{
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/* The first time through this, the systemace_dev object is
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not yet initialized. In that case, fill it in. */
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if (systemace_dev.blksz == 0) {
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systemace_dev.if_type = IF_TYPE_UNKNOWN;
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systemace_dev.devnum = 0;
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systemace_dev.part_type = PART_TYPE_UNKNOWN;
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systemace_dev.type = DEV_TYPE_HARDDISK;
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systemace_dev.blksz = 512;
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systemace_dev.log2blksz = LOG2(systemace_dev.blksz);
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systemace_dev.removable = 1;
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systemace_dev.block_read = systemace_read;
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/*
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* Ensure the correct bus mode (8/16 bits) gets enabled
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*/
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ace_writew(width == 8 ? 0 : 0x0001, 0);
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part_init(&systemace_dev);
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}
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*descp = &systemace_dev;
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return 0;
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}
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U_BOOT_LEGACY_BLK(systemace) = {
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.if_typename = "ace",
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.if_type = IF_TYPE_SYSTEMACE,
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.max_devs = 1,
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.get_dev = systemace_get_dev,
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};
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#endif
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@ -32,7 +32,6 @@ enum if_type {
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IF_TYPE_SD,
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IF_TYPE_SATA,
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IF_TYPE_HOST,
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IF_TYPE_SYSTEMACE,
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IF_TYPE_NVME,
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IF_TYPE_EFI,
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