diff options
author | Simon Glass <sjg@chromium.org> | 2016-01-19 03:19:19 (GMT) |
---|---|---|
committer | Bin Meng <bmeng.cn@gmail.com> | 2016-01-24 04:07:17 (GMT) |
commit | 81afac123896cdd560411f78f673d5bdccbcafbb (patch) | |
tree | 58237ef467d9a861b14861be25beab87d62009c5 /drivers | |
parent | 1ff4f321b69950acca1b06daed89d872a52a337c (diff) | |
download | u-boot-81afac123896cdd560411f78f673d5bdccbcafbb.tar.xz |
dm: x86: Add a driver for Intel PCH9
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>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/pch/Makefile | 1 | ||||
-rw-r--r-- | drivers/pch/pch9.c | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/drivers/pch/Makefile b/drivers/pch/Makefile index 33aa727..dde9e86 100644 --- a/drivers/pch/Makefile +++ b/drivers/pch/Makefile @@ -4,3 +4,4 @@ obj-y += pch-uclass.o obj-y += pch7.o +obj-y += pch9.o diff --git a/drivers/pch/pch9.c b/drivers/pch/pch9.c new file mode 100644 index 0000000..529cb02 --- /dev/null +++ b/drivers/pch/pch9.c @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2014 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <pch.h> + +#define SBASE_ADDR 0x54 + +static int pch9_get_sbase(struct udevice *dev, ulong *sbasep) +{ + uint32_t sbase_addr; + + dm_pci_read_config32(dev, SBASE_ADDR, &sbase_addr); + *sbasep = sbase_addr & 0xfffffe00; + + return 0; +} + +static enum pch_version pch9_get_version(struct udevice *dev) +{ + return PCHV_9; +} + +static const struct pch_ops pch9_ops = { + .get_sbase = pch9_get_sbase, + .get_version = pch9_get_version, +}; + +static const struct udevice_id pch9_ids[] = { + { .compatible = "intel,pch9" }, + { } +}; + +U_BOOT_DRIVER(pch9_drv) = { + .name = "intel-pch9", + .id = UCLASS_PCH, + .of_match = pch9_ids, + .ops = &pch9_ops, +}; |