At some point we may need to distinguish between different types of PCHs, but for existing supported platforms we only need to worry about version 7 and version 9 bridges. Add a driver for the PCH9. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>master
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/*
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* Copyright (C) 2014 Google, Inc |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <pch.h> |
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#define SBASE_ADDR 0x54 |
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static int pch9_get_sbase(struct udevice *dev, ulong *sbasep) |
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{ |
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uint32_t sbase_addr; |
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dm_pci_read_config32(dev, SBASE_ADDR, &sbase_addr); |
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*sbasep = sbase_addr & 0xfffffe00; |
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return 0; |
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} |
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static enum pch_version pch9_get_version(struct udevice *dev) |
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{ |
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return PCHV_9; |
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} |
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static const struct pch_ops pch9_ops = { |
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.get_sbase = pch9_get_sbase, |
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.get_version = pch9_get_version, |
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}; |
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static const struct udevice_id pch9_ids[] = { |
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{ .compatible = "intel,pch9" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(pch9_drv) = { |
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.name = "intel-pch9", |
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.id = UCLASS_PCH, |
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.of_match = pch9_ids, |
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.ops = &pch9_ops, |
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}; |
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