device/dram/ddr3: Drop unused MRS helpers

These aren't used anywhere anymore.

Change-Id: I4cf2fc0d07a772886e90fba4f66591a7b0a40e6c
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47343
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>

src/include/device/dram/ddr3.h

@@ -181,135 +181,5 @@ int spd_xmp_decode_ddr3(struct dimm_attr_ddr3_st *dimm,
 enum cb_err spd_add_smbios17(const u8 channel, const u8 slot,
 			     const u16 selected_freq,
 			     const struct dimm_attr_ddr3_st *info);
-/**
- * \brief Read double word from specified address
- *
- * Should be useful when doing an MRS to the DIMM
- */
-static inline u32 volatile_read(volatile uintptr_t addr)
-{
-	volatile u32 result;
-	result = *(volatile u32 *)addr;
-	return result;
-}
-
-/**
- * \brief Representation of an MRS command
- *
- * This represents an MRS command as seen by the DIMM. This is not a memory
- * address that can be read to generate an MRS command. The mapping of CPU
- * to memory pins is hardware-dependent.
- * \n
- * The idea is to generalize the MRS code, and only need a hardware-specific
- * function to map the MRS bits to CPU address bits. An MRS command can be
- * sent like:
- * @code{.c}
- *	u32 addr;
- *	mrs_cmd_t mrs;
- *	chipset_enable_mrs_command_mode();
- *	mrs = ddr3_get_mr2(rtt_wr, srt, asr, cwl)
- *	if (rank_has_mirrorred_pins)
- *		mrs = ddr3_mrs_mirror_pins(mrs);
- *	addr = chipset_specific_get_mrs_addr(mrs);
- *	volatile_read(addr);
- * @endcode
- *
- * The MRS representation has the following structure:
- *	- cmd[15:0] = Address pins MA[15:0]
- *	- cmd[18:16] = Bank address BA[2:0]
- */
-typedef u32 mrs_cmd_t;
-
-enum ddr3_mr0_precharge {
-	DDR3_MR0_PRECHARGE_SLOW = 0,
-	DDR3_MR0_PRECHARGE_FAST = 1,
-};
-enum ddr3_mr0_mode {
-	DDR3_MR0_MODE_NORMAL = 0,
-	DDR3_MR0_MODE_TEST = 1,
-};
-enum ddr3_mr0_dll_reset {
-	DDR3_MR0_DLL_RESET_NO = 0,
-	DDR3_MR0_DLL_RESET_YES = 1,
-};
-enum ddr3_mr0_burst_type {
-	DDR3_MR0_BURST_TYPE_SEQUENTIAL = 0,
-	DDR3_MR0_BURST_TYPE_INTERLEAVED = 1,
-};
-enum ddr3_mr0_burst_length {
-	DDR3_MR0_BURST_LENGTH_8 = 0,
-	DDR3_MR0_BURST_LENGTH_CHOP = 1,
-	DDR3_MR0_BURST_LENGTH_4 = 2,
-};
-mrs_cmd_t ddr3_get_mr0(enum ddr3_mr0_precharge precharge_pd,
-		       u8 write_recovery,
-		       enum ddr3_mr0_dll_reset dll_reset,
-		       enum ddr3_mr0_mode mode,
-		       u8 cas,
-		       enum ddr3_mr0_burst_type interleaved_burst,
-		       enum ddr3_mr0_burst_length burst_length);
-
-enum ddr3_mr1_qoff {
-	DDR3_MR1_QOFF_ENABLE = 0,
-	DDR3_MR1_QOFF_DISABLE = 1,
-};
-enum ddr3_mr1_tqds {
-	DDR3_MR1_TQDS_DISABLE = 0,
-	DDR3_MR1_TQDS_ENABLE = 1,
-};
-enum ddr3_mr1_write_leveling {
-	DDR3_MR1_WRLVL_DISABLE = 0,
-	DDR3_MR1_WRLVL_ENABLE = 1,
-};
-enum ddr3_mr1_rtt_nom {
-	DDR3_MR1_RTT_NOM_OFF = 0,
-	DDR3_MR1_RTT_NOM_RZQ4 = 1,
-	DDR3_MR1_RTT_NOM_RZQ2 = 2,
-	DDR3_MR1_RTT_NOM_RZQ6 = 3,
-	DDR3_MR1_RTT_NOM_RZQ12 = 4,
-	DDR3_MR1_RTT_NOM_RZQ8 = 5,
-};
-enum ddr3_mr1_additive_latency {
-	DDR3_MR1_AL_DISABLE = 0,
-	DDR3_MR1_AL_CL_MINUS_1 = 1,
-	DDR3_MR1_AL_CL_MINUS_2 = 2,
-};
-enum ddr3_mr1_ods {
-	DDR3_MR1_ODS_RZQ6 = 0,
-	DDR3_MR1_ODS_RZQ7 = 1,
-};
-enum ddr3_mr1_dll {
-	DDR3_MR1_DLL_ENABLE = 0,
-	DDR3_MR1_DLL_DISABLE = 1,
-};
-
-mrs_cmd_t ddr3_get_mr1(enum ddr3_mr1_qoff qoff,
-		       enum ddr3_mr1_tqds tqds,
-		       enum ddr3_mr1_rtt_nom rtt_nom,
-		       enum ddr3_mr1_write_leveling write_leveling,
-		       enum ddr3_mr1_ods output_drive_strenght,
-		       enum ddr3_mr1_additive_latency additive_latency,
-		       enum ddr3_mr1_dll dll_disable);
-
-enum ddr3_mr2_rttwr {
-	DDR3_MR2_RTTWR_OFF = 0,
-	DDR3_MR2_RTTWR_RZQ4 = 1,
-	DDR3_MR2_RTTWR_RZQ2 = 2,
-};
-enum ddr3_mr2_srt_range {
-	DDR3_MR2_SRT_NORMAL = 0,
-	DDR3_MR2_SRT_EXTENDED = 1,
-};
-enum ddr3_mr2_asr {
-	DDR3_MR2_ASR_MANUAL = 0,
-	DDR3_MR2_ASR_AUTO = 1,
-};
-
-mrs_cmd_t ddr3_get_mr2(enum ddr3_mr2_rttwr rtt_wr,
-		       enum ddr3_mr2_srt_range extended_temp,
-		       enum ddr3_mr2_asr self_refresh, u8 cas_cwl);
-
-mrs_cmd_t ddr3_get_mr3(char dataflow_from_mpr);
-mrs_cmd_t ddr3_mrs_mirror_pins(mrs_cmd_t cmd);
 
 #endif /* DEVICE_DRAM_DDR3L_H */