From 875e5aa96c8d9e767d24b99015abb66bf7e0ef75 Mon Sep 17 00:00:00 2001 From: Felix Held Date: Tue, 1 Dec 2020 00:34:11 +0100 Subject: soc/amd: factor out SMBUS controller registers into common header The patch also rewrites the bit definition using shifts to make them easier to read. The older non-SoC chips can probably also use the new header file, but for this patch the scope is limited to soc/amd, since the older non-SoC chips don't use the SMBUS controller code in soc/amd/common. TEST=Timeless build for amd/mandolin and amd/gardenia doesn't change. Change-Id: Ifd5e7e64a41f1cb20cdc4d6ad1e675d7f2de352b Signed-off-by: Felix Held Reviewed-on: https://review.coreboot.org/c/coreboot/+/48188 Tested-by: build bot (Jenkins) Reviewed-by: Marshall Dawson --- src/soc/amd/common/block/include/amdblocks/smbus.h | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 src/soc/amd/common/block/include/amdblocks/smbus.h (limited to 'src/soc/amd/common/block/include/amdblocks') diff --git a/src/soc/amd/common/block/include/amdblocks/smbus.h b/src/soc/amd/common/block/include/amdblocks/smbus.h new file mode 100644 index 0000000000..b618b78c34 --- /dev/null +++ b/src/soc/amd/common/block/include/amdblocks/smbus.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef AMD_BLOCK_SMBUS_H +#define AMD_BLOCK_SMBUS_H + +/* SMBUS MMIO offsets 0xfed80a00 */ +#define SMBHSTSTAT 0x0 +#define SMBHST_STAT_FAILED (1 << 4) +#define SMBHST_STAT_COLLISION (1 << 3) +#define SMBHST_STAT_ERROR (1 << 2) +#define SMBHST_STAT_INTERRUPT (1 << 1) +#define SMBHST_STAT_BUSY (1 << 0) +#define SMBHST_STAT_CLEAR 0xff +#define SMBHST_STAT_NOERROR (1 << 1) /* TODO: this one looks odd */ +#define SMBHST_STAT_VAL_BITS 0x1f +#define SMBHST_STAT_ERROR_BITS 0x1c + +#define SMBSLVSTAT 0x1 +#define SMBSLV_STAT_ALERT (1 << 5) +#define SMBSLV_STAT_SHADOW2 (1 << 4) +#define SMBSLV_STAT_SHADOW1 (1 << 3) +#define SMBSLV_STAT_SLV_STS (1 << 2) +#define SMBSLV_STAT_SLV_INIT (1 << 1) +#define SMBSLV_STAT_SLV_BUSY (1 << 0) +#define SMBSLV_STAT_CLEAR 0x1f + +#define SMBHSTCTRL 0x2 +#define SMBHST_CTRL_RST (1 << 7) +#define SMBHST_CTRL_STRT (1 << 6) +#define SMBHST_CTRL_QCK_RW (0x0 << 2) +#define SMBHST_CTRL_BTE_RW (0x1 << 2) +#define SMBHST_CTRL_BDT_RW (0x2 << 2) +#define SMBHST_CTRL_WDT_RW (0x3 << 2) +#define SMBHST_CTRL_BLK_RW (0x5 << 2) +#define SMBHST_CTRL_MODE_BITS (0x7 << 2) +#define SMBHST_CTRL_KILL (1 << 1) +#define SMBHST_CTRL_IEN (1 << 0) + +#define SMBHSTCMD 0x3 +#define SMBHSTADDR 0x4 +#define SMBHSTDAT0 0x5 +#define SMBHSTDAT1 0x6 +#define SMBHSTBLKDAT 0x7 +#define SMBSLVCTRL 0x8 +#define SMBSLVCMD_SHADOW 0x9 +#define SMBSLVEVT 0xa +#define SMBSLVDAT 0xc +#define SMBTIMING 0xe + +#endif /* AMD_BLOCK_SMBUS_H */ -- cgit v1.2.3