1 // SPDX-License-Identifier: GPL-2.0+
4 * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
12 #include <dt-bindings/memory/mpc83xx-sdram.h>
14 DECLARE_GLOBAL_DATA_PTR;
16 /* Masks for the CS config register */
17 static const u32 CSCONFIG_ENABLE = 0x80000000;
19 static const u32 BANK_BITS_2;
20 static const u32 BANK_BITS_3 = 0x00004000;
22 static const u32 ROW_BITS_12;
23 static const u32 ROW_BITS_13 = 0x00000100;
24 static const u32 ROW_BITS_14 = 0x00000200;
26 static const u32 COL_BITS_8;
27 static const u32 COL_BITS_9 = 0x00000001;
28 static const u32 COL_BITS_10 = 0x00000002;
29 static const u32 COL_BITS_11 = 0x00000003;
31 /* Shifts for the DDR SDRAM Timing Configuration 3 register */
32 static const uint TIMING_CFG3_EXT_REFREC_SHIFT = (31 - 15);
34 /* Shifts for the DDR SDRAM Timing Configuration 0 register */
35 static const uint TIMING_CFG0_RWT_SHIFT = (31 - 1);
36 static const uint TIMING_CFG0_WRT_SHIFT = (31 - 3);
37 static const uint TIMING_CFG0_RRT_SHIFT = (31 - 5);
38 static const uint TIMING_CFG0_WWT_SHIFT = (31 - 7);
39 static const uint TIMING_CFG0_ACT_PD_EXIT_SHIFT = (31 - 11);
40 static const uint TIMING_CFG0_PRE_PD_EXIT_SHIFT = (31 - 15);
41 static const uint TIMING_CFG0_ODT_PD_EXIT_SHIFT = (31 - 23);
42 static const uint TIMING_CFG0_MRS_CYC_SHIFT = (31 - 31);
44 /* Shifts for the DDR SDRAM Timing Configuration 1 register */
45 static const uint TIMING_CFG1_PRETOACT_SHIFT = (31 - 3);
46 static const uint TIMING_CFG1_ACTTOPRE_SHIFT = (31 - 7);
47 static const uint TIMING_CFG1_ACTTORW_SHIFT = (31 - 11);
48 static const uint TIMING_CFG1_CASLAT_SHIFT = (31 - 15);
49 static const uint TIMING_CFG1_REFREC_SHIFT = (31 - 19);
50 static const uint TIMING_CFG1_WRREC_SHIFT = (31 - 23);
51 static const uint TIMING_CFG1_ACTTOACT_SHIFT = (31 - 27);
52 static const uint TIMING_CFG1_WRTORD_SHIFT = (31 - 31);
54 /* Shifts for the DDR SDRAM Timing Configuration 2 register */
55 static const uint TIMING_CFG2_CPO_SHIFT = (31 - 8);
56 static const uint TIMING_CFG2_WR_DATA_DELAY_SHIFT = (31 - 21);
57 static const uint TIMING_CFG2_ADD_LAT_SHIFT = (31 - 3);
58 static const uint TIMING_CFG2_WR_LAT_DELAY_SHIFT = (31 - 12);
59 static const uint TIMING_CFG2_RD_TO_PRE_SHIFT = (31 - 18);
60 static const uint TIMING_CFG2_CKE_PLS_SHIFT = (31 - 25);
61 static const uint TIMING_CFG2_FOUR_ACT_SHIFT;
63 /* Shifts for the DDR SDRAM Control Configuration register */
64 static const uint SDRAM_CFG_SREN_SHIFT = (31 - 1);
65 static const uint SDRAM_CFG_ECC_EN_SHIFT = (31 - 2);
66 static const uint SDRAM_CFG_RD_EN_SHIFT = (31 - 3);
67 static const uint SDRAM_CFG_SDRAM_TYPE_SHIFT = (31 - 7);
68 static const uint SDRAM_CFG_DYN_PWR_SHIFT = (31 - 10);
69 static const uint SDRAM_CFG_DBW_SHIFT = (31 - 12);
70 static const uint SDRAM_CFG_NCAP_SHIFT = (31 - 14);
71 static const uint SDRAM_CFG_2T_EN_SHIFT = (31 - 16);
72 static const uint SDRAM_CFG_BA_INTLV_CTL_SHIFT = (31 - 23);
73 static const uint SDRAM_CFG_PCHB8_SHIFT = (31 - 27);
74 static const uint SDRAM_CFG_HSE_SHIFT = (31 - 28);
75 static const uint SDRAM_CFG_BI_SHIFT = (31 - 31);
77 /* Shifts for the DDR SDRAM Control Configuration 2 register */
78 static const uint SDRAM_CFG2_FRC_SR_SHIFT = (31 - 0);
79 static const uint SDRAM_CFG2_DLL_RST_DIS = (31 - 2);
80 static const uint SDRAM_CFG2_DQS_CFG = (31 - 5);
81 static const uint SDRAM_CFG2_ODT_CFG = (31 - 10);
82 static const uint SDRAM_CFG2_NUM_PR = (31 - 19);
84 /* Shifts for the DDR SDRAM Mode register */
85 static const uint SDRAM_MODE_ESD_SHIFT = (31 - 15);
86 static const uint SDRAM_MODE_SD_SHIFT = (31 - 31);
88 /* Shifts for the DDR SDRAM Mode 2 register */
89 static const uint SDRAM_MODE2_ESD2_SHIFT = (31 - 15);
90 static const uint SDRAM_MODE2_ESD3_SHIFT = (31 - 31);
92 /* Shifts for the DDR SDRAM Interval Configuration register */
93 static const uint SDRAM_INTERVAL_REFINT_SHIFT = (31 - 15);
94 static const uint SDRAM_INTERVAL_BSTOPRE_SHIFT = (31 - 31);
96 /* Mask for the DDR SDRAM Mode Control register */
97 static const u32 SDRAM_CFG_MEM_EN = 0x80000000;
101 struct udevice *ram_ctrl;
104 /* Current assumption: There is only one RAM controller */
105 ret = uclass_first_device_err(UCLASS_RAM, &ram_ctrl);
107 debug("%s: uclass_first_device_err failed: %d\n",
112 /* FIXME(mario.six@gdsys.cc): Set gd->ram_size? */
117 phys_size_t get_effective_memsize(void)
119 if (!IS_ENABLED(CONFIG_VERY_BIG_RAM))
122 /* Limit stack to what we can reasonable map */
123 return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
124 CONFIG_MAX_MEM_MAPPED : gd->ram_size);
128 * struct mpc83xx_sdram_priv - Private data for MPC83xx RAM controllers
129 * @total_size: The total size of all RAM modules associated with this RAM
130 * controller in bytes
132 struct mpc83xx_sdram_priv {
137 * mpc83xx_sdram_static_init() - Statically initialize a RAM module.
138 * @node: Device tree node associated with ths module in question
139 * @cs: The chip select to use for this RAM module
140 * @mapaddr: The address where the RAM module should be mapped
141 * @size: The size of the RAM module to be mapped in bytes
143 * Return: 0 if OK, -ve on error
145 static int mpc83xx_sdram_static_init(ofnode node, u32 cs, u32 mapaddr, u32 size)
147 immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
149 u32 msize_log2 = __ilog2(msize);
150 u32 auto_precharge, odt_rd_cfg, odt_wr_cfg, bank_bits, row_bits,
152 u32 bank_bits_mask, row_bits_mask, col_bits_mask;
154 /* Configure the DDR local access window */
155 out_be32(&im->sysconf.ddrlaw[cs].bar, mapaddr & 0xfffff000);
156 out_be32(&im->sysconf.ddrlaw[cs].ar, LBLAWAR_EN | (msize_log2 - 1));
158 out_be32(&im->ddr.csbnds[cs].csbnds, (msize - 1) >> 24);
160 auto_precharge = ofnode_read_u32_default(node, "auto_precharge", 0);
161 switch (auto_precharge) {
162 case AUTO_PRECHARGE_ENABLE:
163 case AUTO_PRECHARGE_DISABLE:
166 debug("%s: auto_precharge value %d invalid.\n",
167 ofnode_get_name(node), auto_precharge);
171 odt_rd_cfg = ofnode_read_u32_default(node, "odt_rd_cfg", 0);
172 switch (odt_rd_cfg) {
173 case ODT_RD_ONLY_OTHER_DIMM:
174 if (!IS_ENABLED(CONFIG_ARCH_MPC8360) &&
175 !IS_ENABLED(CONFIG_ARCH_MPC837X)) {
176 debug("%s: odt_rd_cfg value %d invalid.\n",
177 ofnode_get_name(node), odt_rd_cfg);
182 case ODT_RD_ONLY_CURRENT:
183 case ODT_RD_ONLY_OTHER_CS:
184 if (!IS_ENABLED(CONFIG_ARCH_MPC830X) &&
185 !IS_ENABLED(CONFIG_ARCH_MPC831X) &&
186 !IS_ENABLED(CONFIG_ARCH_MPC8360) &&
187 !IS_ENABLED(CONFIG_ARCH_MPC837X)) {
188 debug("%s: odt_rd_cfg value %d invalid.\n",
189 ofnode_get_name(node), odt_rd_cfg);
193 /* Only MPC832x knows this value */
197 debug("%s: odt_rd_cfg value %d invalid.\n",
198 ofnode_get_name(node), odt_rd_cfg);
202 odt_wr_cfg = ofnode_read_u32_default(node, "odt_wr_cfg", 0);
203 switch (odt_wr_cfg) {
204 case ODT_WR_ONLY_OTHER_DIMM:
205 if (!IS_ENABLED(CONFIG_ARCH_MPC8360) &&
206 !IS_ENABLED(CONFIG_ARCH_MPC837X)) {
207 debug("%s: odt_wr_cfg value %d invalid.\n",
208 ofnode_get_name(node), odt_wr_cfg);
213 case ODT_WR_ONLY_CURRENT:
214 case ODT_WR_ONLY_OTHER_CS:
215 if (!IS_ENABLED(CONFIG_ARCH_MPC830X) &&
216 !IS_ENABLED(CONFIG_ARCH_MPC831X) &&
217 !IS_ENABLED(CONFIG_ARCH_MPC8360) &&
218 !IS_ENABLED(CONFIG_ARCH_MPC837X)) {
219 debug("%s: odt_wr_cfg value %d invalid.\n",
220 ofnode_get_name(node), odt_wr_cfg);
224 /* MPC832x only knows this value */
228 debug("%s: odt_wr_cfg value %d invalid.\n",
229 ofnode_get_name(node), odt_wr_cfg);
233 bank_bits = ofnode_read_u32_default(node, "bank_bits", 0);
236 bank_bits_mask = BANK_BITS_2;
239 bank_bits_mask = BANK_BITS_3;
242 debug("%s: bank_bits value %d invalid.\n",
243 ofnode_get_name(node), bank_bits);
247 row_bits = ofnode_read_u32_default(node, "row_bits", 0);
250 row_bits_mask = ROW_BITS_12;
253 row_bits_mask = ROW_BITS_13;
256 row_bits_mask = ROW_BITS_14;
259 debug("%s: row_bits value %d invalid.\n",
260 ofnode_get_name(node), row_bits);
264 col_bits = ofnode_read_u32_default(node, "col_bits", 0);
267 col_bits_mask = COL_BITS_8;
270 col_bits_mask = COL_BITS_9;
273 col_bits_mask = COL_BITS_10;
276 col_bits_mask = COL_BITS_11;
279 debug("%s: col_bits value %d invalid.\n",
280 ofnode_get_name(node), col_bits);
284 /* Write CS config value */
285 out_be32(&im->ddr.cs_config[cs], CSCONFIG_ENABLE | auto_precharge |
286 odt_rd_cfg | odt_wr_cfg |
287 bank_bits_mask | row_bits_mask |
293 * mpc83xx_sdram_spd_init() - Initialize a RAM module using a SPD flash.
294 * @node: Device tree node associated with ths module in question
295 * @cs: The chip select to use for this RAM module
296 * @mapaddr: The address where the RAM module should be mapped
297 * @size: The size of the RAM module to be mapped in bytes
299 * Return: 0 if OK, -ve on error
301 static int mpc83xx_sdram_spd_init(ofnode node, u32 cs, u32 mapaddr, u32 size)
303 /* TODO(mario.six@gdsys.cc): Implement */
307 static int mpc83xx_sdram_ofdata_to_platdata(struct udevice *dev)
312 static int mpc83xx_sdram_probe(struct udevice *dev)
314 struct mpc83xx_sdram_priv *priv = dev_get_priv(dev);
315 immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
318 /* DDR control driver register values */
319 u32 dso, pz_override, nz_override, odt_term, ddr_type, mvref_sel, m_odr;
321 /* DDR SDRAM Clock Control register values */
323 /* DDR SDRAM Timing Configuration 3 register values */
324 u32 ext_refresh_rec, ext_refresh_rec_mask;
325 /* DDR SDRAM Timing Configuration 0 register values */
326 u32 read_to_write, write_to_read, read_to_read, write_to_write,
327 active_powerdown_exit, precharge_powerdown_exit,
328 odt_powerdown_exit, mode_reg_set_cycle;
330 /* DDR SDRAM Timing Configuration 1 register values */
331 u32 precharge_to_activate, activate_to_precharge,
332 activate_to_readwrite, mcas_latency, refresh_recovery,
333 last_data_to_precharge, activate_to_activate,
334 last_write_data_to_read;
336 /* DDR SDRAM Timing Configuration 2 register values */
337 u32 additive_latency, mcas_to_preamble_override, write_latency,
338 read_to_precharge, write_cmd_to_write_data,
339 minimum_cke_pulse_width, four_activates_window;
341 /* DDR SDRAM Control Configuration register values */
342 u32 self_refresh, ecc, registered_dram, sdram_type,
343 dynamic_power_management, databus_width, nc_auto_precharge,
344 timing_2t, bank_interleaving_ctrl, precharge_bit_8, half_strength,
345 bypass_initialization;
347 /* DDR SDRAM Control Configuration 2 register values */
348 u32 force_self_refresh, dll_reset, dqs_config, odt_config,
351 /* DDR SDRAM Mode Configuration register values */
354 /* DDR SDRAM Mode Configuration 2 register values */
355 u32 esdmode2, esdmode3;
357 /* DDR SDRAM Interval Configuration register values */
358 u32 refresh_interval, precharge_interval;
361 priv->total_size = 0;
363 /* Disable both banks initially (might be re-enabled in loop below) */
364 out_be32(&im->ddr.cs_config[0], 0);
365 out_be32(&im->ddr.cs_config[1], 0);
367 dso = dev_read_u32_default(dev, "driver_software_override", 0);
369 debug("%s: driver_software_override value %d invalid.\n",
374 pz_override = dev_read_u32_default(dev, "p_impedance_override", 0);
376 switch (pz_override) {
377 case DSO_P_IMPEDANCE_HIGHEST_Z:
378 case DSO_P_IMPEDANCE_MUCH_HIGHER_Z:
379 case DSO_P_IMPEDANCE_HIGHER_Z:
380 case DSO_P_IMPEDANCE_NOMINAL:
381 case DSO_P_IMPEDANCE_LOWER_Z:
384 debug("%s: p_impedance_override value %d invalid.\n",
385 dev->name, pz_override);
389 nz_override = dev_read_u32_default(dev, "n_impedance_override", 0);
391 switch (nz_override) {
392 case DSO_N_IMPEDANCE_HIGHEST_Z:
393 case DSO_N_IMPEDANCE_MUCH_HIGHER_Z:
394 case DSO_N_IMPEDANCE_HIGHER_Z:
395 case DSO_N_IMPEDANCE_NOMINAL:
396 case DSO_N_IMPEDANCE_LOWER_Z:
399 debug("%s: n_impedance_override value %d invalid.\n",
400 dev->name, nz_override);
404 odt_term = dev_read_u32_default(dev, "odt_termination_value", 0);
406 debug("%s: odt_termination_value value %d invalid.\n",
407 dev->name, odt_term);
411 ddr_type = dev_read_u32_default(dev, "ddr_type", 0);
413 debug("%s: ddr_type value %d invalid.\n",
414 dev->name, ddr_type);
418 mvref_sel = dev_read_u32_default(dev, "mvref_sel", 0);
420 debug("%s: mvref_sel value %d invalid.\n",
421 dev->name, mvref_sel);
425 m_odr = dev_read_u32_default(dev, "m_odr", 0);
427 debug("%s: m_odr value %d invalid.\n",
432 ddrcdr = dso << (31 - 1) |
433 pz_override << (31 - 5) |
434 nz_override << (31 - 9) |
435 odt_term << (31 - 12) |
436 ddr_type << (31 - 13) |
437 mvref_sel << (31 - 29) |
438 m_odr << (31 - 30) | 1;
440 /* Configure the DDR control driver register */
441 out_be32(&im->sysconf.ddrcdr, ddrcdr);
443 dev_for_each_subnode(subnode, dev) {
447 /* CS, map address, size -> three values */
448 ofnode_read_u32_array(subnode, "reg", val, 3);
455 debug("%s: chip select value %d invalid.\n",
460 /* TODO(mario.six@gdsys.cc): Sanity check for size. */
462 if (ofnode_read_bool(subnode, "read-spd"))
463 ret = mpc83xx_sdram_spd_init(subnode, cs, addr, size);
465 ret = mpc83xx_sdram_static_init(subnode, cs, addr,
468 debug("%s: RAM init failed.\n", dev->name);
474 * TODO(mario.six@gdsys.cc): This should only occur for static
478 clock_adjust = dev_read_u32_default(dev, "clock_adjust", 0);
479 switch (clock_adjust) {
480 case CLOCK_ADJUST_025:
481 case CLOCK_ADJUST_05:
482 case CLOCK_ADJUST_075:
486 debug("%s: clock_adjust value %d invalid.\n",
487 dev->name, clock_adjust);
491 /* Configure the DDR SDRAM Clock Control register */
492 out_be32(&im->ddr.sdram_clk_cntl, clock_adjust);
494 ext_refresh_rec = dev_read_u32_default(dev, "ext_refresh_rec", 0);
495 switch (ext_refresh_rec) {
497 ext_refresh_rec_mask = 0 << TIMING_CFG3_EXT_REFREC_SHIFT;
500 ext_refresh_rec_mask = 1 << TIMING_CFG3_EXT_REFREC_SHIFT;
503 ext_refresh_rec_mask = 2 << TIMING_CFG3_EXT_REFREC_SHIFT;
506 ext_refresh_rec_mask = 3 << TIMING_CFG3_EXT_REFREC_SHIFT;
509 ext_refresh_rec_mask = 4 << TIMING_CFG3_EXT_REFREC_SHIFT;
512 ext_refresh_rec_mask = 5 << TIMING_CFG3_EXT_REFREC_SHIFT;
515 ext_refresh_rec_mask = 6 << TIMING_CFG3_EXT_REFREC_SHIFT;
518 ext_refresh_rec_mask = 7 << TIMING_CFG3_EXT_REFREC_SHIFT;
521 debug("%s: ext_refresh_rec value %d invalid.\n",
522 dev->name, ext_refresh_rec);
526 /* Configure the DDR SDRAM Timing Configuration 3 register */
527 out_be32(&im->ddr.timing_cfg_3, ext_refresh_rec_mask);
529 read_to_write = dev_read_u32_default(dev, "read_to_write", 0);
530 if (read_to_write > 3) {
531 debug("%s: read_to_write value %d invalid.\n",
532 dev->name, read_to_write);
536 write_to_read = dev_read_u32_default(dev, "write_to_read", 0);
537 if (write_to_read > 3) {
538 debug("%s: write_to_read value %d invalid.\n",
539 dev->name, write_to_read);
543 read_to_read = dev_read_u32_default(dev, "read_to_read", 0);
544 if (read_to_read > 3) {
545 debug("%s: read_to_read value %d invalid.\n",
546 dev->name, read_to_read);
550 write_to_write = dev_read_u32_default(dev, "write_to_write", 0);
551 if (write_to_write > 3) {
552 debug("%s: write_to_write value %d invalid.\n",
553 dev->name, write_to_write);
557 active_powerdown_exit =
558 dev_read_u32_default(dev, "active_powerdown_exit", 0);
559 if (active_powerdown_exit > 7) {
560 debug("%s: active_powerdown_exit value %d invalid.\n",
561 dev->name, active_powerdown_exit);
565 precharge_powerdown_exit =
566 dev_read_u32_default(dev, "precharge_powerdown_exit", 0);
567 if (precharge_powerdown_exit > 7) {
568 debug("%s: precharge_powerdown_exit value %d invalid.\n",
569 dev->name, precharge_powerdown_exit);
573 odt_powerdown_exit = dev_read_u32_default(dev, "odt_powerdown_exit", 0);
574 if (odt_powerdown_exit > 15) {
575 debug("%s: odt_powerdown_exit value %d invalid.\n",
576 dev->name, odt_powerdown_exit);
580 mode_reg_set_cycle = dev_read_u32_default(dev, "mode_reg_set_cycle", 0);
581 if (mode_reg_set_cycle > 15) {
582 debug("%s: mode_reg_set_cycle value %d invalid.\n",
583 dev->name, mode_reg_set_cycle);
587 timing_cfg_0 = read_to_write << TIMING_CFG0_RWT_SHIFT |
588 write_to_read << TIMING_CFG0_WRT_SHIFT |
589 read_to_read << TIMING_CFG0_RRT_SHIFT |
590 write_to_write << TIMING_CFG0_WWT_SHIFT |
591 active_powerdown_exit << TIMING_CFG0_ACT_PD_EXIT_SHIFT |
592 precharge_powerdown_exit << TIMING_CFG0_PRE_PD_EXIT_SHIFT |
593 odt_powerdown_exit << TIMING_CFG0_ODT_PD_EXIT_SHIFT |
594 mode_reg_set_cycle << TIMING_CFG0_MRS_CYC_SHIFT;
596 out_be32(&im->ddr.timing_cfg_0, timing_cfg_0);
598 precharge_to_activate =
599 dev_read_u32_default(dev, "precharge_to_activate", 0);
600 if (precharge_to_activate > 7 || precharge_to_activate == 0) {
601 debug("%s: precharge_to_activate value %d invalid.\n",
602 dev->name, precharge_to_activate);
606 activate_to_precharge =
607 dev_read_u32_default(dev, "activate_to_precharge", 0);
608 if (activate_to_precharge > 19) {
609 debug("%s: activate_to_precharge value %d invalid.\n",
610 dev->name, activate_to_precharge);
614 activate_to_readwrite =
615 dev_read_u32_default(dev, "activate_to_readwrite", 0);
616 if (activate_to_readwrite > 7 || activate_to_readwrite == 0) {
617 debug("%s: activate_to_readwrite value %d invalid.\n",
618 dev->name, activate_to_readwrite);
622 mcas_latency = dev_read_u32_default(dev, "mcas_latency", 0);
623 switch (mcas_latency) {
626 if (!IS_ENABLED(CONFIG_ARCH_MPC8308)) {
627 debug("%s: MCAS latency < 3.0 unsupported on MPC8308\n",
645 debug("%s: mcas_latency value %d invalid.\n",
646 dev->name, mcas_latency);
650 refresh_recovery = dev_read_u32_default(dev, "refresh_recovery", 0);
651 if (refresh_recovery > 23 || refresh_recovery < 8) {
652 debug("%s: refresh_recovery value %d invalid.\n",
653 dev->name, refresh_recovery);
657 last_data_to_precharge =
658 dev_read_u32_default(dev, "last_data_to_precharge", 0);
659 if (last_data_to_precharge > 7 || last_data_to_precharge == 0) {
660 debug("%s: last_data_to_precharge value %d invalid.\n",
661 dev->name, last_data_to_precharge);
665 activate_to_activate =
666 dev_read_u32_default(dev, "activate_to_activate", 0);
667 if (activate_to_activate > 7 || activate_to_activate == 0) {
668 debug("%s: activate_to_activate value %d invalid.\n",
669 dev->name, activate_to_activate);
673 last_write_data_to_read =
674 dev_read_u32_default(dev, "last_write_data_to_read", 0);
675 if (last_write_data_to_read > 7 || last_write_data_to_read == 0) {
676 debug("%s: last_write_data_to_read value %d invalid.\n",
677 dev->name, last_write_data_to_read);
681 timing_cfg_1 = precharge_to_activate << TIMING_CFG1_PRETOACT_SHIFT |
682 (activate_to_precharge > 15 ?
683 activate_to_precharge - 16 :
684 activate_to_precharge) << TIMING_CFG1_ACTTOPRE_SHIFT |
685 activate_to_readwrite << TIMING_CFG1_ACTTORW_SHIFT |
686 mcas_latency << TIMING_CFG1_CASLAT_SHIFT |
687 (refresh_recovery - 8) << TIMING_CFG1_REFREC_SHIFT |
688 last_data_to_precharge << TIMING_CFG1_WRREC_SHIFT |
689 activate_to_activate << TIMING_CFG1_ACTTOACT_SHIFT |
690 last_write_data_to_read << TIMING_CFG1_WRTORD_SHIFT;
692 /* Configure the DDR SDRAM Timing Configuration 1 register */
693 out_be32(&im->ddr.timing_cfg_1, timing_cfg_1);
695 additive_latency = dev_read_u32_default(dev, "additive_latency", 0);
696 if (additive_latency > 5) {
697 debug("%s: additive_latency value %d invalid.\n",
698 dev->name, additive_latency);
702 mcas_to_preamble_override =
703 dev_read_u32_default(dev, "mcas_to_preamble_override", 0);
704 switch (mcas_to_preamble_override) {
705 case READ_LAT_PLUS_1:
707 case READ_LAT_PLUS_1_4:
708 case READ_LAT_PLUS_1_2:
709 case READ_LAT_PLUS_3_4:
710 case READ_LAT_PLUS_5_4:
711 case READ_LAT_PLUS_3_2:
712 case READ_LAT_PLUS_7_4:
713 case READ_LAT_PLUS_2:
714 case READ_LAT_PLUS_9_4:
715 case READ_LAT_PLUS_5_2:
716 case READ_LAT_PLUS_11_4:
717 case READ_LAT_PLUS_3:
718 case READ_LAT_PLUS_13_4:
719 case READ_LAT_PLUS_7_2:
720 case READ_LAT_PLUS_15_4:
721 case READ_LAT_PLUS_4:
722 case READ_LAT_PLUS_17_4:
723 case READ_LAT_PLUS_9_2:
724 case READ_LAT_PLUS_19_4:
727 debug("%s: mcas_to_preamble_override value %d invalid.\n",
728 dev->name, mcas_to_preamble_override);
732 write_latency = dev_read_u32_default(dev, "write_latency", 0);
733 if (write_latency > 7 || write_latency == 0) {
734 debug("%s: write_latency value %d invalid.\n",
735 dev->name, write_latency);
739 read_to_precharge = dev_read_u32_default(dev, "read_to_precharge", 0);
740 if (read_to_precharge > 4 || read_to_precharge == 0) {
741 debug("%s: read_to_precharge value %d invalid.\n",
742 dev->name, read_to_precharge);
746 write_cmd_to_write_data =
747 dev_read_u32_default(dev, "write_cmd_to_write_data", 0);
748 switch (write_cmd_to_write_data) {
750 case CLOCK_DELAY_1_4:
751 case CLOCK_DELAY_1_2:
752 case CLOCK_DELAY_3_4:
754 case CLOCK_DELAY_5_4:
755 case CLOCK_DELAY_3_2:
758 debug("%s: write_cmd_to_write_data value %d invalid.\n",
759 dev->name, write_cmd_to_write_data);
763 minimum_cke_pulse_width =
764 dev_read_u32_default(dev, "minimum_cke_pulse_width", 0);
765 if (minimum_cke_pulse_width > 4 || minimum_cke_pulse_width == 0) {
766 debug("%s: minimum_cke_pulse_width value %d invalid.\n",
767 dev->name, minimum_cke_pulse_width);
771 four_activates_window =
772 dev_read_u32_default(dev, "four_activates_window", 0);
773 if (four_activates_window > 20 || four_activates_window == 0) {
774 debug("%s: four_activates_window value %d invalid.\n",
775 dev->name, four_activates_window);
779 timing_cfg_2 = additive_latency << TIMING_CFG2_ADD_LAT_SHIFT |
780 mcas_to_preamble_override << TIMING_CFG2_CPO_SHIFT |
781 write_latency << TIMING_CFG2_WR_LAT_DELAY_SHIFT |
782 read_to_precharge << TIMING_CFG2_RD_TO_PRE_SHIFT |
783 write_cmd_to_write_data << TIMING_CFG2_WR_DATA_DELAY_SHIFT |
784 minimum_cke_pulse_width << TIMING_CFG2_CKE_PLS_SHIFT |
785 four_activates_window << TIMING_CFG2_FOUR_ACT_SHIFT;
787 out_be32(&im->ddr.timing_cfg_2, timing_cfg_2);
789 self_refresh = dev_read_u32_default(dev, "self_refresh", 0);
790 switch (self_refresh) {
795 debug("%s: self_refresh value %d invalid.\n",
796 dev->name, self_refresh);
800 ecc = dev_read_u32_default(dev, "ecc", 0);
806 debug("%s: ecc value %d invalid.\n", dev->name, ecc);
810 registered_dram = dev_read_u32_default(dev, "registered_dram", 0);
811 switch (registered_dram) {
816 debug("%s: registered_dram value %d invalid.\n",
817 dev->name, registered_dram);
821 sdram_type = dev_read_u32_default(dev, "sdram_type", 0);
822 switch (sdram_type) {
827 debug("%s: sdram_type value %d invalid.\n",
828 dev->name, sdram_type);
832 dynamic_power_management =
833 dev_read_u32_default(dev, "dynamic_power_management", 0);
834 switch (dynamic_power_management) {
835 case DYN_PWR_DISABLE:
839 debug("%s: dynamic_power_management value %d invalid.\n",
840 dev->name, dynamic_power_management);
844 databus_width = dev_read_u32_default(dev, "databus_width", 0);
845 switch (databus_width) {
846 case DATA_BUS_WIDTH_16:
847 case DATA_BUS_WIDTH_32:
850 debug("%s: databus_width value %d invalid.\n",
851 dev->name, databus_width);
855 nc_auto_precharge = dev_read_u32_default(dev, "nc_auto_precharge", 0);
856 switch (nc_auto_precharge) {
861 debug("%s: nc_auto_precharge value %d invalid.\n",
862 dev->name, nc_auto_precharge);
866 timing_2t = dev_read_u32_default(dev, "timing_2t", 0);
872 debug("%s: timing_2t value %d invalid.\n",
873 dev->name, timing_2t);
877 bank_interleaving_ctrl =
878 dev_read_u32_default(dev, "bank_interleaving_ctrl", 0);
879 switch (bank_interleaving_ctrl) {
880 case INTERLEAVE_NONE:
881 case INTERLEAVE_1_AND_2:
884 debug("%s: bank_interleaving_ctrl value %d invalid.\n",
885 dev->name, bank_interleaving_ctrl);
889 precharge_bit_8 = dev_read_u32_default(dev, "precharge_bit_8", 0);
890 switch (precharge_bit_8) {
891 case PRECHARGE_MA_10:
895 debug("%s: precharge_bit_8 value %d invalid.\n",
896 dev->name, precharge_bit_8);
900 half_strength = dev_read_u32_default(dev, "half_strength", 0);
901 switch (half_strength) {
906 debug("%s: half_strength value %d invalid.\n",
907 dev->name, half_strength);
911 bypass_initialization =
912 dev_read_u32_default(dev, "bypass_initialization", 0);
913 switch (bypass_initialization) {
914 case INITIALIZATION_DONT_BYPASS:
915 case INITIALIZATION_BYPASS:
918 debug("%s: bypass_initialization value %d invalid.\n",
919 dev->name, bypass_initialization);
923 sdram_cfg = self_refresh << SDRAM_CFG_SREN_SHIFT |
924 ecc << SDRAM_CFG_ECC_EN_SHIFT |
925 registered_dram << SDRAM_CFG_RD_EN_SHIFT |
926 sdram_type << SDRAM_CFG_SDRAM_TYPE_SHIFT |
927 dynamic_power_management << SDRAM_CFG_DYN_PWR_SHIFT |
928 databus_width << SDRAM_CFG_DBW_SHIFT |
929 nc_auto_precharge << SDRAM_CFG_NCAP_SHIFT |
930 timing_2t << SDRAM_CFG_2T_EN_SHIFT |
931 bank_interleaving_ctrl << SDRAM_CFG_BA_INTLV_CTL_SHIFT |
932 precharge_bit_8 << SDRAM_CFG_PCHB8_SHIFT |
933 half_strength << SDRAM_CFG_HSE_SHIFT |
934 bypass_initialization << SDRAM_CFG_BI_SHIFT;
936 out_be32(&im->ddr.sdram_cfg, sdram_cfg);
938 force_self_refresh = dev_read_u32_default(dev, "force_self_refresh", 0);
939 switch (force_self_refresh) {
944 debug("%s: force_self_refresh value %d invalid.\n",
945 dev->name, force_self_refresh);
949 dll_reset = dev_read_u32_default(dev, "dll_reset", 0);
951 case DLL_RESET_ENABLE:
952 case DLL_RESET_DISABLE:
955 debug("%s: dll_reset value %d invalid.\n",
956 dev->name, dll_reset);
960 dqs_config = dev_read_u32_default(dev, "dqs_config", 0);
961 switch (dqs_config) {
965 debug("%s: dqs_config value %d invalid.\n",
966 dev->name, dqs_config);
970 odt_config = dev_read_u32_default(dev, "odt_config", 0);
971 switch (odt_config) {
972 case ODT_ASSERT_NEVER:
973 case ODT_ASSERT_WRITES:
974 case ODT_ASSERT_READS:
975 case ODT_ASSERT_ALWAYS:
978 debug("%s: odt_config value %d invalid.\n",
979 dev->name, odt_config);
983 posted_refreshes = dev_read_u32_default(dev, "posted_refreshes", 0);
984 if (posted_refreshes > 8 || posted_refreshes == 0) {
985 debug("%s: posted_refreshes value %d invalid.\n",
986 dev->name, posted_refreshes);
990 sdram_cfg2 = force_self_refresh << SDRAM_CFG2_FRC_SR_SHIFT |
991 dll_reset << SDRAM_CFG2_DLL_RST_DIS |
992 dqs_config << SDRAM_CFG2_DQS_CFG |
993 odt_config << SDRAM_CFG2_ODT_CFG |
994 posted_refreshes << SDRAM_CFG2_NUM_PR;
996 out_be32(&im->ddr.sdram_cfg2, sdram_cfg2);
998 sdmode = dev_read_u32_default(dev, "sdmode", 0);
999 if (sdmode > 0xFFFF) {
1000 debug("%s: sdmode value %d invalid.\n",
1005 esdmode = dev_read_u32_default(dev, "esdmode", 0);
1006 if (esdmode > 0xFFFF) {
1007 debug("%s: esdmode value %d invalid.\n", dev->name, esdmode);
1011 sdram_mode = sdmode << SDRAM_MODE_SD_SHIFT |
1012 esdmode << SDRAM_MODE_ESD_SHIFT;
1014 out_be32(&im->ddr.sdram_mode, sdram_mode);
1016 esdmode2 = dev_read_u32_default(dev, "esdmode2", 0);
1017 if (esdmode2 > 0xFFFF) {
1018 debug("%s: esdmode2 value %d invalid.\n", dev->name, esdmode2);
1022 esdmode3 = dev_read_u32_default(dev, "esdmode3", 0);
1023 if (esdmode3 > 0xFFFF) {
1024 debug("%s: esdmode3 value %d invalid.\n", dev->name, esdmode3);
1028 sdram_mode2 = esdmode2 << SDRAM_MODE2_ESD2_SHIFT |
1029 esdmode3 << SDRAM_MODE2_ESD3_SHIFT;
1031 out_be32(&im->ddr.sdram_mode2, sdram_mode2);
1033 refresh_interval = dev_read_u32_default(dev, "refresh_interval", 0);
1034 if (refresh_interval > 0xFFFF) {
1035 debug("%s: refresh_interval value %d invalid.\n",
1036 dev->name, refresh_interval);
1040 precharge_interval = dev_read_u32_default(dev, "precharge_interval", 0);
1041 if (precharge_interval > 0x3FFF) {
1042 debug("%s: precharge_interval value %d invalid.\n",
1043 dev->name, precharge_interval);
1047 sdram_interval = refresh_interval << SDRAM_INTERVAL_REFINT_SHIFT |
1048 precharge_interval << SDRAM_INTERVAL_BSTOPRE_SHIFT;
1050 out_be32(&im->ddr.sdram_interval, sdram_interval);
1053 /* Enable DDR controller */
1054 setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);
1057 dev_for_each_subnode(subnode, dev) {
1061 /* CS, map address, size -> three values */
1062 ofnode_read_u32_array(subnode, "reg", val, 3);
1067 priv->total_size += get_ram_size((long int *)addr, size);
1070 gd->ram_size = priv->total_size;
1075 static int mpc83xx_sdram_get_info(struct udevice *dev, struct ram_info *info)
1077 /* TODO(mario.six@gdsys.cc): Implement */
1081 static struct ram_ops mpc83xx_sdram_ops = {
1082 .get_info = mpc83xx_sdram_get_info,
1085 static const struct udevice_id mpc83xx_sdram_ids[] = {
1086 { .compatible = "fsl,mpc83xx-mem-controller" },
1090 U_BOOT_DRIVER(mpc83xx_sdram) = {
1091 .name = "mpc83xx_sdram",
1093 .of_match = mpc83xx_sdram_ids,
1094 .ops = &mpc83xx_sdram_ops,
1095 .ofdata_to_platdata = mpc83xx_sdram_ofdata_to_platdata,
1096 .probe = mpc83xx_sdram_probe,
1097 .priv_auto_alloc_size = sizeof(struct mpc83xx_sdram_priv),