diff options
| author | Marshall Dawson <marshalldawson3rd@gmail.com> | 2019-09-04 11:00:06 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2019-09-09 22:19:33 +0000 |
| commit | ba2533f0ee952a2bbe90ed60d5ab3d4c19513aa0 (patch) | |
| tree | c2475556183b1e5dee88872b8f546b9e27b84e66 /src/soc/amd/common/block/include/amdblocks/lpc.h | |
| parent | 5aacda4b9824cebcc7d5f816419b6f9cc82be8a0 (diff) | |
soc/amd/common/lpc: Add decode disable function
It is already trivial to set D14F3x44 to 0, but add a function to wipe
both that and the settings in D14F3x48, along with x48's associated
addresses.
Change-Id: Ibec25562b2a1568681aea7caf86f00094c436a50
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35270
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Diffstat (limited to 'src/soc/amd/common/block/include/amdblocks/lpc.h')
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/lpc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/lpc.h b/src/soc/amd/common/block/include/amdblocks/lpc.h index 6b6745d9cb..f956ba3aa9 100644 --- a/src/soc/amd/common/block/include/amdblocks/lpc.h +++ b/src/soc/amd/common/block/include/amdblocks/lpc.h @@ -68,6 +68,7 @@ #define DECODE_IO_PORT_ENABLE2 BIT(18) #define DECODE_IO_PORT_ENABLE1 BIT(17) #define DECODE_IO_PORT_ENABLE0 BIT(16) +#define LPC_SYNC_TIMEOUT_COUNT_MASK (0xff << 8) #define LPC_SYNC_TIMEOUT_COUNT_ENABLE BIT(7) #define LPC_DECODE_RTC_IO_ENABLE BIT(6) #define DECODE_MEM_PORT_ENABLE0 BIT(5) @@ -134,6 +135,9 @@ #define PREFETCH_EN_SPI_FROM_HOST BIT(0) #define T_START_ENH BIT(3) +/* Clear all decoding to the LPC bus and erase any range registers associated + * with the enable bits. */ +void lpc_disable_decodes(void); /* LPC is typically enabled very early, but this function is last opportunity */ void soc_late_lpc_bridge_enable(void); void lpc_enable_port80(void); |