diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-11-13 14:07:30 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2020-11-22 20:22:38 +0000 |
| commit | 737f111d2c5b981b3fe9bca03105fb79ceea1e81 (patch) | |
| tree | 35ad422561888f6c64dfab154626c8b6249901f8 | |
| parent | 8137806326a22fcff2a2029245e415117df77c38 (diff) | |
nb/intel/sandybridge: Use bitfield for GDCRCMDPICODING
This register's layout makes no sense, so use bitfields for clarity.
Tested on Asus P8H61-M PRO, still boots.
Change-Id: I61efc7349badc2c3297c9b71535dceecaba509d0
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47571
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_common.c | 19 | ||||
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_common.h | 19 |
2 files changed, 31 insertions, 7 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_common.c b/src/northbridge/intel/sandybridge/raminit_common.c index d18e302de0..60f9e1fdd6 100644 --- a/src/northbridge/intel/sandybridge/raminit_common.c +++ b/src/northbridge/intel/sandybridge/raminit_common.c @@ -917,7 +917,7 @@ static const u32 lane_base[] = { void program_timings(ramctr_timing *ctrl, int channel) { - u32 reg32, reg_roundtrip_latency, reg_pi_code, reg_logic_delay, reg_io_latency; + u32 reg_roundtrip_latency, reg_pi_code, reg_logic_delay, reg_io_latency; int lane; int slotrank, slot; int full_shift = 0; @@ -950,13 +950,18 @@ void program_timings(ramctr_timing *ctrl, int channel) } /* Enable CMD XOVER */ - reg32 = get_XOVER_CMD(ctrl->rankmap[channel]); - reg32 |= (pi_coding_ctrl[0] & 0x3f) << 6; - reg32 |= (pi_coding_ctrl[0] & 0x40) << 9; - reg32 |= (pi_coding_ctrl[1] & 0x7f) << 18; - reg32 |= (full_shift & 0x3f) | ((full_shift & 0x40) << 6); + union gdcr_cmd_pi_coding_reg cmd_pi_coding = { + .raw = get_XOVER_CMD(ctrl->rankmap[channel]), + }; + cmd_pi_coding.cmd_pi_code = full_shift & 0x3f; + cmd_pi_coding.cmd_logic_delay = !!(full_shift & 0x40); + + cmd_pi_coding.ctl_pi_code_d0 = pi_coding_ctrl[0] & 0x3f; + cmd_pi_coding.ctl_pi_code_d1 = pi_coding_ctrl[1] & 0x3f; + cmd_pi_coding.ctl_logic_delay_d0 = !!(pi_coding_ctrl[0] & 0x40); + cmd_pi_coding.ctl_logic_delay_d1 = !!(pi_coding_ctrl[1] & 0x40); - MCHBAR32(GDCRCMDPICODING_ch(channel)) = reg32; + MCHBAR32(GDCRCMDPICODING_ch(channel)) = cmd_pi_coding.raw; /* Enable CLK XOVER */ reg_pi_code = get_XOVER_CLK(ctrl->rankmap[channel]); diff --git a/src/northbridge/intel/sandybridge/raminit_common.h b/src/northbridge/intel/sandybridge/raminit_common.h index 0aa687da70..798b4828e5 100644 --- a/src/northbridge/intel/sandybridge/raminit_common.h +++ b/src/northbridge/intel/sandybridge/raminit_common.h @@ -98,6 +98,25 @@ struct iosav_ssq { } addr_update; }; +union gdcr_cmd_pi_coding_reg { + struct { + u32 cmd_pi_code : 6; /* [ 5.. 0] */ + u32 ctl_pi_code_d0 : 6; /* [11.. 6] */ + u32 cmd_logic_delay : 1; /* [12..12] */ + u32 cmd_phase_delay : 1; /* [13..13] */ + u32 cmd_xover_enable : 1; /* [14..14] */ + u32 ctl_logic_delay_d0 : 1; /* [15..15] */ + u32 ctl_phase_delay_d0 : 1; /* [16..16] */ + u32 ctl_xover_enable_d0 : 1; /* [17..17] */ + u32 ctl_pi_code_d1 : 6; /* [23..18] */ + u32 ctl_logic_delay_d1 : 1; /* [24..24] */ + u32 ctl_phase_delay_d1 : 1; /* [25..25] */ + u32 ctl_xover_enable_d1 : 1; /* [26..26] */ + u32 : 5; + }; + u32 raw; +}; + union tc_dbp_reg { struct { u32 tRCD : 4; /* [ 3.. 0] */ |