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https://github.com/brain-hackers/u-boot-brain
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81afac1238
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>
44 lines
750 B
C
44 lines
750 B
C
/*
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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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