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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2021 SiFive
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*/
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#include <common.h>
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#include <cache.h>
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#include <dm.h>
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#include <asm/io.h>
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#include <dm/device.h>
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#include <linux/bitfield.h>
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#define SIFIVE_CCACHE_CONFIG 0x000
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#define SIFIVE_CCACHE_CONFIG_WAYS GENMASK(15, 8)
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#define SIFIVE_CCACHE_WAY_ENABLE 0x008
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struct sifive_ccache {
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void __iomem *base;
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};
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static int sifive_ccache_enable(struct udevice *dev)
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{
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struct sifive_ccache *priv = dev_get_priv(dev);
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u32 config;
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u32 ways;
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/* Enable all ways of composable cache */
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config = readl(priv->base + SIFIVE_CCACHE_CONFIG);
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ways = FIELD_GET(SIFIVE_CCACHE_CONFIG_WAYS, config);
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writel(ways - 1, priv->base + SIFIVE_CCACHE_WAY_ENABLE);
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return 0;
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}
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static int sifive_ccache_get_info(struct udevice *dev, struct cache_info *info)
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{
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struct sifive_ccache *priv = dev_get_priv(dev);
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info->base = (uintptr_t)priv->base;
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return 0;
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}
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static const struct cache_ops sifive_ccache_ops = {
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.enable = sifive_ccache_enable,
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.get_info = sifive_ccache_get_info,
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};
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static int sifive_ccache_probe(struct udevice *dev)
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{
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struct sifive_ccache *priv = dev_get_priv(dev);
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priv->base = dev_read_addr_ptr(dev);
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if (!priv->base)
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return -EINVAL;
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return 0;
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}
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static const struct udevice_id sifive_ccache_ids[] = {
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{ .compatible = "sifive,fu540-c000-ccache" },
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{ .compatible = "sifive,fu740-c000-ccache" },
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{ .compatible = "sifive,ccache0" },
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{}
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};
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U_BOOT_DRIVER(sifive_ccache) = {
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.name = "sifive_ccache",
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.id = UCLASS_CACHE,
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.of_match = sifive_ccache_ids,
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.probe = sifive_ccache_probe,
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.priv_auto = sizeof(struct sifive_ccache),
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.ops = &sifive_ccache_ops,
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};
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