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soc/amd/common/block/acpimmio: Add fch_disable_legacy_dma_io

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Add a method to disable decoding the legacy DMA IO ports.

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I979445cfa8317334e62e9ebf12256ece9f8058bf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51075
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Raul E Rangel 2021-02-24 16:17:54 -07:00 committed by Patrick Georgi
parent bda338a1be
commit 69ff428159
2 changed files with 9 additions and 0 deletions
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6
src/soc/amd/common/block/acpimmio/mmio_util.c
View file

@ -69,6 +69,12 @@ void fch_enable_legacy_io(void)
pm_write32(PM_DECODE_EN, pm_read32(PM_DECODE_EN) | LEGACY_IO_EN);
}
void fch_disable_legacy_dma_io(void)
{
pm_write32(PM_DECODE_EN, pm_read32(PM_DECODE_EN) &
~(LEGACY_DMA_IO_EN | LEGACY_DMA_IO_80_EN));
}
void fch_io_enable_legacy_io(void)
{
pm_io_write32(PM_DECODE_EN, pm_io_read32(PM_DECODE_EN) | LEGACY_IO_EN);

3
src/soc/amd/common/block/include/amdblocks/acpimmio.h
View file

@ -22,6 +22,8 @@
#define HPET_EN (1 << 6) /* decode HPET MMIO at 0xfed00000 */
#define FCH_IOAPIC_EN (1 << 5)
#define SMBUS_ASF_IO_EN (1 << 4)
#define LEGACY_DMA_IO_80_EN (1 << 3) /* pass 0x80-0x83 to legacy DMA IO range */
#define LEGACY_DMA_IO_EN (1 << 2)
#define CF9_IO_EN (1 << 1)
#define LEGACY_IO_EN (1 << 0)
#define PM_RST_STATUS 0xc0
@ -78,6 +80,7 @@ void enable_acpimmio_decode_pm24(void);
void enable_acpimmio_decode_pm04(void);
void fch_enable_cf9_io(void);
void fch_enable_legacy_io(void);
void fch_disable_legacy_dma_io(void);
void fch_io_enable_legacy_io(void);
void fch_enable_ioapic_decode(void);
void fch_configure_hpet(void);