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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Dinh Nguyen9bbd2132015-06-02 22:52:48 -05002/*
3 * Copyright Altera Corporation (C) 2014-2015
Dinh Nguyen9bbd2132015-06-02 22:52:48 -05004 */
5#include <common.h>
Simon Goldschmidt29873c72019-04-16 22:04:39 +02006#include <dm.h>
Marek Vasut99f453e2015-08-01 22:25:29 +02007#include <errno.h>
Dinh Nguyen9bbd2132015-06-02 22:52:48 -05008#include <div64.h>
Simon Glass9b4a2052019-12-28 10:45:05 -07009#include <init.h>
Simon Goldschmidt29873c72019-04-16 22:04:39 +020010#include <ram.h>
11#include <reset.h>
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050012#include <watchdog.h>
13#include <asm/arch/fpga_manager.h>
Simon Goldschmidt29873c72019-04-16 22:04:39 +020014#include <asm/arch/reset_manager.h>
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050015#include <asm/arch/sdram.h>
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050016#include <asm/arch/system_manager.h>
17#include <asm/io.h>
Simon Glass336d4612020-02-03 07:36:16 -070018#include <dm/device_compat.h>
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050019
Simon Goldschmidt29873c72019-04-16 22:04:39 +020020#include "sequencer.h"
21
22#ifdef CONFIG_SPL_BUILD
23
24struct altera_gen5_sdram_priv {
25 struct ram_info info;
26};
27
28struct altera_gen5_sdram_platdata {
29 struct socfpga_sdr *sdr;
30};
31
Marek Vasut42f7ebb2015-07-26 10:37:54 +020032struct sdram_prot_rule {
Marek Vasut08eb9472015-08-01 23:12:11 +020033 u32 sdram_start; /* SDRAM start address */
34 u32 sdram_end; /* SDRAM end address */
Marek Vasut42f7ebb2015-07-26 10:37:54 +020035 u32 rule; /* SDRAM protection rule number: 0-19 */
36 int valid; /* Rule valid or not? 1 - valid, 0 not*/
37
38 u32 security;
39 u32 portmask;
40 u32 result;
41 u32 lo_prot_id;
42 u32 hi_prot_id;
43};
44
Simon Goldschmidt29873c72019-04-16 22:04:39 +020045static unsigned long sdram_calculate_size(struct socfpga_sdr_ctrl *sdr_ctrl);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050046
Marek Vasutf3671692015-08-01 19:20:19 +020047/**
48 * get_errata_rows() - Up the number of DRAM rows to cover entire address space
Marek Vasut764aa9a2015-08-01 21:16:20 +020049 * @cfg: SDRAM controller configuration data
Marek Vasutf3671692015-08-01 19:20:19 +020050 *
51 * SDRAM Failure happens when accessing non-existent memory. Artificially
52 * increase the number of rows so that the memory controller thinks it has
53 * 4GB of RAM. This function returns such amount of rows.
54 */
Marek Vasut5af91412015-08-01 21:35:18 +020055static int get_errata_rows(const struct socfpga_sdram_config *cfg)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050056{
Marek Vasutf3671692015-08-01 19:20:19 +020057 /* Define constant for 4G memory - used for SDRAM errata workaround */
58#define MEMSIZE_4G (4ULL * 1024ULL * 1024ULL * 1024ULL)
59 const unsigned long long memsize = MEMSIZE_4G;
Marek Vasut764aa9a2015-08-01 21:16:20 +020060 const unsigned int cs =
61 ((cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_CSBITS_MASK) >>
62 SDR_CTRLGRP_DRAMADDRW_CSBITS_LSB) + 1;
63 const unsigned int rows =
64 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
65 SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
66 const unsigned int banks =
67 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_BANKBITS_MASK) >>
68 SDR_CTRLGRP_DRAMADDRW_BANKBITS_LSB;
69 const unsigned int cols =
70 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_COLBITS_MASK) >>
71 SDR_CTRLGRP_DRAMADDRW_COLBITS_LSB;
Marek Vasutf3671692015-08-01 19:20:19 +020072 const unsigned int width = 8;
73
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050074 unsigned long long newrows;
Marek Vasutf3671692015-08-01 19:20:19 +020075 int bits, inewrowslog2;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050076
77 debug("workaround rows - memsize %lld\n", memsize);
78 debug("workaround rows - cs %d\n", cs);
79 debug("workaround rows - width %d\n", width);
80 debug("workaround rows - rows %d\n", rows);
81 debug("workaround rows - banks %d\n", banks);
82 debug("workaround rows - cols %d\n", cols);
83
Marek Vasut791d20e2015-08-01 18:54:34 +020084 newrows = lldiv(memsize, cs * (width / 8));
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050085 debug("rows workaround - term1 %lld\n", newrows);
86
Marek Vasut791d20e2015-08-01 18:54:34 +020087 newrows = lldiv(newrows, (1 << banks) * (1 << cols));
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050088 debug("rows workaround - term2 %lld\n", newrows);
89
Marek Vasut791d20e2015-08-01 18:54:34 +020090 /*
91 * Compute the hamming weight - same as number of bits set.
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050092 * Need to see if result is ordinal power of 2 before
93 * attempting log2 of result.
94 */
Marek Vasut58d86142015-08-01 18:46:55 +020095 bits = generic_hweight32(newrows);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -050096
97 debug("rows workaround - bits %d\n", bits);
98
99 if (bits != 1) {
100 printf("SDRAM workaround failed, bits set %d\n", bits);
101 return rows;
102 }
103
104 if (newrows > UINT_MAX) {
105 printf("SDRAM workaround rangecheck failed, %lld\n", newrows);
106 return rows;
107 }
108
Marek Vasut791d20e2015-08-01 18:54:34 +0200109 inewrowslog2 = __ilog2(newrows);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500110
Marek Vasut791d20e2015-08-01 18:54:34 +0200111 debug("rows workaround - ilog2 %d, %lld\n", inewrowslog2, newrows);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500112
113 if (inewrowslog2 == -1) {
Marek Vasut791d20e2015-08-01 18:54:34 +0200114 printf("SDRAM workaround failed, newrows %lld\n", newrows);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500115 return rows;
116 }
117
118 return inewrowslog2;
119}
120
121/* SDRAM protection rules vary from 0-19, a total of 20 rules. */
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200122static void sdram_set_rule(struct socfpga_sdr_ctrl *sdr_ctrl,
123 struct sdram_prot_rule *prule)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500124{
Marek Vasut08eb9472015-08-01 23:12:11 +0200125 u32 lo_addr_bits;
126 u32 hi_addr_bits;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500127 int ruleno = prule->rule;
128
129 /* Select the rule */
130 writel(ruleno, &sdr_ctrl->prot_rule_rdwr);
131
132 /* Obtain the address bits */
Marek Vasuta0037402015-08-01 22:40:48 +0200133 lo_addr_bits = prule->sdram_start >> 20ULL;
Marek Vasut164eb232016-04-04 17:52:21 +0200134 hi_addr_bits = (prule->sdram_end - 1) >> 20ULL;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500135
Marek Vasut08eb9472015-08-01 23:12:11 +0200136 debug("sdram set rule start %x, %d\n", lo_addr_bits,
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500137 prule->sdram_start);
Marek Vasut08eb9472015-08-01 23:12:11 +0200138 debug("sdram set rule end %x, %d\n", hi_addr_bits,
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500139 prule->sdram_end);
140
141 /* Set rule addresses */
142 writel(lo_addr_bits | (hi_addr_bits << 12), &sdr_ctrl->prot_rule_addr);
143
144 /* Set rule protection ids */
145 writel(prule->lo_prot_id | (prule->hi_prot_id << 12),
146 &sdr_ctrl->prot_rule_id);
147
148 /* Set the rule data */
149 writel(prule->security | (prule->valid << 2) |
150 (prule->portmask << 3) | (prule->result << 13),
151 &sdr_ctrl->prot_rule_data);
152
153 /* write the rule */
Marek Vasuta0037402015-08-01 22:40:48 +0200154 writel(ruleno | (1 << 5), &sdr_ctrl->prot_rule_rdwr);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500155
156 /* Set rule number to 0 by default */
157 writel(0, &sdr_ctrl->prot_rule_rdwr);
158}
159
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200160static void sdram_get_rule(struct socfpga_sdr_ctrl *sdr_ctrl,
161 struct sdram_prot_rule *prule)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500162{
Marek Vasut6d015952015-08-01 23:21:23 +0200163 u32 addr;
164 u32 id;
165 u32 data;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500166 int ruleno = prule->rule;
167
168 /* Read the rule */
169 writel(ruleno, &sdr_ctrl->prot_rule_rdwr);
Marek Vasut6d015952015-08-01 23:21:23 +0200170 writel(ruleno | (1 << 6), &sdr_ctrl->prot_rule_rdwr);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500171
172 /* Get the addresses */
173 addr = readl(&sdr_ctrl->prot_rule_addr);
174 prule->sdram_start = (addr & 0xFFF) << 20;
175 prule->sdram_end = ((addr >> 12) & 0xFFF) << 20;
176
177 /* Get the configured protection IDs */
178 id = readl(&sdr_ctrl->prot_rule_id);
179 prule->lo_prot_id = id & 0xFFF;
180 prule->hi_prot_id = (id >> 12) & 0xFFF;
181
182 /* Get protection data */
183 data = readl(&sdr_ctrl->prot_rule_data);
184
185 prule->security = data & 0x3;
186 prule->valid = (data >> 2) & 0x1;
187 prule->portmask = (data >> 3) & 0x3FF;
188 prule->result = (data >> 13) & 0x1;
189}
190
Marek Vasut08eb9472015-08-01 23:12:11 +0200191static void
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200192sdram_set_protection_config(struct socfpga_sdr_ctrl *sdr_ctrl,
193 const u32 sdram_start, const u32 sdram_end)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500194{
195 struct sdram_prot_rule rule;
196 int rules;
197
198 /* Start with accepting all SDRAM transaction */
199 writel(0x0, &sdr_ctrl->protport_default);
200
201 /* Clear all protection rules for warm boot case */
Marek Vasuta0037402015-08-01 22:40:48 +0200202 memset(&rule, 0, sizeof(rule));
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500203
204 for (rules = 0; rules < 20; rules++) {
205 rule.rule = rules;
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200206 sdram_set_rule(sdr_ctrl, &rule);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500207 }
208
209 /* new rule: accept SDRAM */
210 rule.sdram_start = sdram_start;
211 rule.sdram_end = sdram_end;
212 rule.lo_prot_id = 0x0;
213 rule.hi_prot_id = 0xFFF;
214 rule.portmask = 0x3FF;
215 rule.security = 0x3;
216 rule.result = 0;
217 rule.valid = 1;
218 rule.rule = 0;
219
220 /* set new rule */
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200221 sdram_set_rule(sdr_ctrl, &rule);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500222
223 /* default rule: reject everything */
224 writel(0x3ff, &sdr_ctrl->protport_default);
225}
226
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200227static void sdram_dump_protection_config(struct socfpga_sdr_ctrl *sdr_ctrl)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500228{
229 struct sdram_prot_rule rule;
230 int rules;
231
232 debug("SDRAM Prot rule, default %x\n",
233 readl(&sdr_ctrl->protport_default));
234
235 for (rules = 0; rules < 20; rules++) {
Marek Vasut1720fad2015-12-29 09:38:52 +0100236 rule.rule = rules;
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200237 sdram_get_rule(sdr_ctrl, &rule);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500238 debug("Rule %d, rules ...\n", rules);
Marek Vasut08eb9472015-08-01 23:12:11 +0200239 debug(" sdram start %x\n", rule.sdram_start);
240 debug(" sdram end %x\n", rule.sdram_end);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500241 debug(" low prot id %d, hi prot id %d\n",
242 rule.lo_prot_id,
243 rule.hi_prot_id);
244 debug(" portmask %x\n", rule.portmask);
245 debug(" security %d\n", rule.security);
246 debug(" result %d\n", rule.result);
247 debug(" valid %d\n", rule.valid);
248 }
249}
250
Marek Vasut269de4f2015-08-01 22:26:11 +0200251/**
252 * sdram_write_verify() - write to register and verify the write.
253 * @addr: Register address
254 * @val: Value to be written and verified
255 *
256 * This function writes to a register, reads back the value and compares
257 * the result with the written value to check if the data match.
258 */
259static unsigned sdram_write_verify(const u32 *addr, const u32 val)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500260{
Marek Vasut269de4f2015-08-01 22:26:11 +0200261 u32 rval;
262
263 debug(" Write - Address 0x%p Data 0x%08x\n", addr, val);
264 writel(val, addr);
265
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500266 debug(" Read and verify...");
Marek Vasut269de4f2015-08-01 22:26:11 +0200267 rval = readl(addr);
268 if (rval != val) {
269 debug("FAIL - Address 0x%p Expected 0x%08x Data 0x%08x\n",
270 addr, val, rval);
271 return -EINVAL;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500272 }
Marek Vasut269de4f2015-08-01 22:26:11 +0200273
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500274 debug("correct!\n");
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500275 return 0;
276}
277
Marek Vasut96b869b2015-08-01 22:28:30 +0200278/**
279 * sdr_get_ctrlcfg() - Get the value of DRAM CTRLCFG register
280 * @cfg: SDRAM controller configuration data
281 *
282 * Return the value of DRAM CTRLCFG register.
283 */
Marek Vasut5af91412015-08-01 21:35:18 +0200284static u32 sdr_get_ctrlcfg(const struct socfpga_sdram_config *cfg)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500285{
Marek Vasut764aa9a2015-08-01 21:16:20 +0200286 const u32 csbits =
287 ((cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_CSBITS_MASK) >>
288 SDR_CTRLGRP_DRAMADDRW_CSBITS_LSB) + 1;
289 u32 addrorder =
290 (cfg->ctrl_cfg & SDR_CTRLGRP_CTRLCFG_ADDRORDER_MASK) >>
291 SDR_CTRLGRP_CTRLCFG_ADDRORDER_LSB;
292
Marek Vasut04ae4482015-08-01 20:30:10 +0200293 u32 ctrl_cfg = cfg->ctrl_cfg;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500294
Marek Vasut067c8532015-08-01 19:33:40 +0200295 /*
296 * SDRAM Failure When Accessing Non-Existent Memory
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500297 * Set the addrorder field of the SDRAM control register
298 * based on the CSBITs setting.
299 */
Marek Vasut764aa9a2015-08-01 21:16:20 +0200300 if (csbits == 1) {
301 if (addrorder != 0)
Marek Vasut067c8532015-08-01 19:33:40 +0200302 debug("INFO: Changing address order to 0 (chip, row, bank, column)\n");
Marek Vasut764aa9a2015-08-01 21:16:20 +0200303 addrorder = 0;
304 } else if (csbits == 2) {
305 if (addrorder != 2)
Marek Vasut067c8532015-08-01 19:33:40 +0200306 debug("INFO: Changing address order to 2 (row, chip, bank, column)\n");
Marek Vasut764aa9a2015-08-01 21:16:20 +0200307 addrorder = 2;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500308 }
309
Marek Vasut764aa9a2015-08-01 21:16:20 +0200310 ctrl_cfg &= ~SDR_CTRLGRP_CTRLCFG_ADDRORDER_MASK;
Marek Vasut067c8532015-08-01 19:33:40 +0200311 ctrl_cfg |= addrorder << SDR_CTRLGRP_CTRLCFG_ADDRORDER_LSB;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500312
Marek Vasut9d6b0122015-08-01 21:24:31 +0200313 return ctrl_cfg;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500314}
315
Marek Vasut96b869b2015-08-01 22:28:30 +0200316/**
317 * sdr_get_addr_rw() - Get the value of DRAM ADDRW register
318 * @cfg: SDRAM controller configuration data
319 *
320 * Return the value of DRAM ADDRW register.
321 */
Marek Vasut5af91412015-08-01 21:35:18 +0200322static u32 sdr_get_addr_rw(const struct socfpga_sdram_config *cfg)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500323{
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500324 /*
325 * SDRAM Failure When Accessing Non-Existent Memory
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500326 * Set SDR_CTRLGRP_DRAMADDRW_CSBITS_LSB to
327 * log2(number of chip select bits). Since there's only
328 * 1 or 2 chip selects, log2(1) => 0, and log2(2) => 1,
329 * which is the same as "chip selects" - 1.
330 */
Marek Vasut764aa9a2015-08-01 21:16:20 +0200331 const int rows = get_errata_rows(cfg);
332 u32 dram_addrw = cfg->dram_addrw & ~SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK;
Marek Vasut04ae4482015-08-01 20:30:10 +0200333
Marek Vasut9d6b0122015-08-01 21:24:31 +0200334 return dram_addrw | (rows << SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500335}
336
Marek Vasut1a302a42015-08-01 21:26:55 +0200337/**
338 * sdr_load_regs() - Load SDRAM controller registers
339 * @cfg: SDRAM controller configuration data
340 *
341 * This function loads the register values into the SDRAM controller block.
342 */
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200343static void sdr_load_regs(struct socfpga_sdr_ctrl *sdr_ctrl,
344 const struct socfpga_sdram_config *cfg)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500345{
Marek Vasut9d6b0122015-08-01 21:24:31 +0200346 const u32 ctrl_cfg = sdr_get_ctrlcfg(cfg);
347 const u32 dram_addrw = sdr_get_addr_rw(cfg);
348
Marek Vasut9d6b0122015-08-01 21:24:31 +0200349 debug("\nConfiguring CTRLCFG\n");
350 writel(ctrl_cfg, &sdr_ctrl->ctrl_cfg);
Marek Vasut076470e2015-08-01 21:21:21 +0200351
352 debug("Configuring DRAMTIMING1\n");
353 writel(cfg->dram_timing1, &sdr_ctrl->dram_timing1);
354
355 debug("Configuring DRAMTIMING2\n");
356 writel(cfg->dram_timing2, &sdr_ctrl->dram_timing2);
357
358 debug("Configuring DRAMTIMING3\n");
359 writel(cfg->dram_timing3, &sdr_ctrl->dram_timing3);
360
361 debug("Configuring DRAMTIMING4\n");
362 writel(cfg->dram_timing4, &sdr_ctrl->dram_timing4);
363
364 debug("Configuring LOWPWRTIMING\n");
365 writel(cfg->lowpwr_timing, &sdr_ctrl->lowpwr_timing);
366
Marek Vasut9d6b0122015-08-01 21:24:31 +0200367 debug("Configuring DRAMADDRW\n");
368 writel(dram_addrw, &sdr_ctrl->dram_addrw);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500369
370 debug("Configuring DRAMIFWIDTH\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200371 writel(cfg->dram_if_width, &sdr_ctrl->dram_if_width);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500372
373 debug("Configuring DRAMDEVWIDTH\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200374 writel(cfg->dram_dev_width, &sdr_ctrl->dram_dev_width);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500375
376 debug("Configuring LOWPWREQ\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200377 writel(cfg->lowpwr_eq, &sdr_ctrl->lowpwr_eq);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500378
379 debug("Configuring DRAMINTR\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200380 writel(cfg->dram_intr, &sdr_ctrl->dram_intr);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500381
Marek Vasut076470e2015-08-01 21:21:21 +0200382 debug("Configuring STATICCFG\n");
383 writel(cfg->static_cfg, &sdr_ctrl->static_cfg);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500384
385 debug("Configuring CTRLWIDTH\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200386 writel(cfg->ctrl_width, &sdr_ctrl->ctrl_width);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500387
388 debug("Configuring PORTCFG\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200389 writel(cfg->port_cfg, &sdr_ctrl->port_cfg);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500390
Marek Vasut076470e2015-08-01 21:21:21 +0200391 debug("Configuring FIFOCFG\n");
392 writel(cfg->fifo_cfg, &sdr_ctrl->fifo_cfg);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500393
394 debug("Configuring MPPRIORITY\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200395 writel(cfg->mp_priority, &sdr_ctrl->mp_priority);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500396
Marek Vasut076470e2015-08-01 21:21:21 +0200397 debug("Configuring MPWEIGHT_MPWEIGHT_0\n");
398 writel(cfg->mp_weight0, &sdr_ctrl->mp_weight0);
399 writel(cfg->mp_weight1, &sdr_ctrl->mp_weight1);
400 writel(cfg->mp_weight2, &sdr_ctrl->mp_weight2);
401 writel(cfg->mp_weight3, &sdr_ctrl->mp_weight3);
402
403 debug("Configuring MPPACING_MPPACING_0\n");
404 writel(cfg->mp_pacing0, &sdr_ctrl->mp_pacing0);
405 writel(cfg->mp_pacing1, &sdr_ctrl->mp_pacing1);
406 writel(cfg->mp_pacing2, &sdr_ctrl->mp_pacing2);
407 writel(cfg->mp_pacing3, &sdr_ctrl->mp_pacing3);
408
409 debug("Configuring MPTHRESHOLDRST_MPTHRESHOLDRST_0\n");
410 writel(cfg->mp_threshold0, &sdr_ctrl->mp_threshold0);
411 writel(cfg->mp_threshold1, &sdr_ctrl->mp_threshold1);
412 writel(cfg->mp_threshold2, &sdr_ctrl->mp_threshold2);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500413
414 debug("Configuring PHYCTRL_PHYCTRL_0\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200415 writel(cfg->phy_ctrl0, &sdr_ctrl->phy_ctrl0);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500416
417 debug("Configuring CPORTWIDTH\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200418 writel(cfg->cport_width, &sdr_ctrl->cport_width);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500419
420 debug("Configuring CPORTWMAP\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200421 writel(cfg->cport_wmap, &sdr_ctrl->cport_wmap);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500422
423 debug("Configuring CPORTRMAP\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200424 writel(cfg->cport_rmap, &sdr_ctrl->cport_rmap);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500425
426 debug("Configuring RFIFOCMAP\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200427 writel(cfg->rfifo_cmap, &sdr_ctrl->rfifo_cmap);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500428
429 debug("Configuring WFIFOCMAP\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200430 writel(cfg->wfifo_cmap, &sdr_ctrl->wfifo_cmap);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500431
432 debug("Configuring CPORTRDWR\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200433 writel(cfg->cport_rdwr, &sdr_ctrl->cport_rdwr);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500434
435 debug("Configuring DRAMODT\n");
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200436 writel(cfg->dram_odt, &sdr_ctrl->dram_odt);
Chin Liang See89a54ab2016-09-21 10:25:56 +0800437
Marek Vasut9a5a90a2019-10-18 00:22:31 +0200438 if (dram_is_ddr(3)) {
439 debug("Configuring EXTRATIME1\n");
440 writel(cfg->extratime1, &sdr_ctrl->extratime1);
441 }
Marek Vasut1a302a42015-08-01 21:26:55 +0200442}
443
Marek Vasut1e8a85f2015-08-01 22:03:48 +0200444/**
445 * sdram_mmr_init_full() - Function to initialize SDRAM MMR
446 * @sdr_phy_reg: Value of the PHY control register 0
447 *
448 * Initialize the SDRAM MMR.
449 */
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200450int sdram_mmr_init_full(struct socfpga_sdr_ctrl *sdr_ctrl,
451 unsigned int sdr_phy_reg)
Marek Vasut1a302a42015-08-01 21:26:55 +0200452{
Marek Vasut5af91412015-08-01 21:35:18 +0200453 const struct socfpga_sdram_config *cfg = socfpga_get_sdram_config();
Marek Vasut1a302a42015-08-01 21:26:55 +0200454 const unsigned int rows =
455 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
456 SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
Marek Vasut269de4f2015-08-01 22:26:11 +0200457 int ret;
Marek Vasut1a302a42015-08-01 21:26:55 +0200458
Ley Foon Tandb5741f2019-11-08 10:38:20 +0800459 writel(rows,
460 socfpga_get_sysmgr_addr() + SYSMGR_ISWGRP_HANDOFF_OFFSET(4));
Marek Vasut1a302a42015-08-01 21:26:55 +0200461
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200462 sdr_load_regs(sdr_ctrl, cfg);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500463
464 /* saving this value to SYSMGR.ISWGRP.HANDOFF.FPGA2SDR */
Ley Foon Tandb5741f2019-11-08 10:38:20 +0800465 writel(cfg->fpgaport_rst,
466 socfpga_get_sysmgr_addr() + SYSMGR_ISWGRP_HANDOFF_OFFSET(3));
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500467
468 /* only enable if the FPGA is programmed */
469 if (fpgamgr_test_fpga_ready()) {
Marek Vasut269de4f2015-08-01 22:26:11 +0200470 ret = sdram_write_verify(&sdr_ctrl->fpgaport_rst,
471 cfg->fpgaport_rst);
472 if (ret)
473 return ret;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500474 }
475
476 /* Restore the SDR PHY Register if valid */
477 if (sdr_phy_reg != 0xffffffff)
478 writel(sdr_phy_reg, &sdr_ctrl->phy_ctrl0);
479
Marek Vasutdc3b91d2015-08-01 20:58:44 +0200480 /* Final step - apply configuration changes */
481 debug("Configuring STATICCFG\n");
482 clrsetbits_le32(&sdr_ctrl->static_cfg,
483 SDR_CTRLGRP_STATICCFG_APPLYCFG_MASK,
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500484 1 << SDR_CTRLGRP_STATICCFG_APPLYCFG_LSB);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500485
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200486 sdram_set_protection_config(sdr_ctrl, 0,
487 sdram_calculate_size(sdr_ctrl) - 1);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500488
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200489 sdram_dump_protection_config(sdr_ctrl);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500490
Marek Vasut269de4f2015-08-01 22:26:11 +0200491 return 0;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500492}
493
Marek Vasutf97606f2015-08-01 21:47:16 +0200494/**
495 * sdram_calculate_size() - Calculate SDRAM size
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500496 *
Marek Vasutf97606f2015-08-01 21:47:16 +0200497 * Calculate SDRAM device size based on SDRAM controller parameters.
498 * Size is specified in bytes.
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500499 */
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200500static unsigned long sdram_calculate_size(struct socfpga_sdr_ctrl *sdr_ctrl)
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500501{
502 unsigned long temp;
503 unsigned long row, bank, col, cs, width;
Marek Vasutbb056d92015-08-01 21:44:00 +0200504 const struct socfpga_sdram_config *cfg = socfpga_get_sdram_config();
505 const unsigned int csbits =
506 ((cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_CSBITS_MASK) >>
507 SDR_CTRLGRP_DRAMADDRW_CSBITS_LSB) + 1;
508 const unsigned int rowbits =
509 (cfg->dram_addrw & SDR_CTRLGRP_DRAMADDRW_ROWBITS_MASK) >>
510 SDR_CTRLGRP_DRAMADDRW_ROWBITS_LSB;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500511
512 temp = readl(&sdr_ctrl->dram_addrw);
513 col = (temp & SDR_CTRLGRP_DRAMADDRW_COLBITS_MASK) >>
514 SDR_CTRLGRP_DRAMADDRW_COLBITS_LSB;
515
Marek Vasutf97606f2015-08-01 21:47:16 +0200516 /*
517 * SDRAM Failure When Accessing Non-Existent Memory
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500518 * Use ROWBITS from Quartus/QSys to calculate SDRAM size
519 * since the FB specifies we modify ROWBITs to work around SDRAM
520 * controller issue.
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500521 */
Ley Foon Tandb5741f2019-11-08 10:38:20 +0800522 row = readl(socfpga_get_sysmgr_addr() +
523 SYSMGR_ISWGRP_HANDOFF_OFFSET(4));
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500524 if (row == 0)
Marek Vasutbb056d92015-08-01 21:44:00 +0200525 row = rowbits;
Marek Vasutf97606f2015-08-01 21:47:16 +0200526 /*
527 * If the stored handoff value for rows is greater than
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500528 * the field width in the sdr.dramaddrw register then
529 * something is very wrong. Revert to using the the #define
530 * value handed off by the SOCEDS tool chain instead of
531 * using a broken value.
532 */
533 if (row > 31)
Marek Vasutbb056d92015-08-01 21:44:00 +0200534 row = rowbits;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500535
536 bank = (temp & SDR_CTRLGRP_DRAMADDRW_BANKBITS_MASK) >>
537 SDR_CTRLGRP_DRAMADDRW_BANKBITS_LSB;
538
Marek Vasutf97606f2015-08-01 21:47:16 +0200539 /*
540 * SDRAM Failure When Accessing Non-Existent Memory
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500541 * Use CSBITs from Quartus/QSys to calculate SDRAM size
542 * since the FB specifies we modify CSBITs to work around SDRAM
543 * controller issue.
544 */
Marek Vasutbb056d92015-08-01 21:44:00 +0200545 cs = csbits;
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500546
547 width = readl(&sdr_ctrl->dram_if_width);
Marek Vasutf97606f2015-08-01 21:47:16 +0200548
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500549 /* ECC would not be calculated as its not addressible */
550 if (width == SDRAM_WIDTH_32BIT_WITH_ECC)
551 width = 32;
552 if (width == SDRAM_WIDTH_16BIT_WITH_ECC)
553 width = 16;
554
555 /* calculate the SDRAM size base on this info */
556 temp = 1 << (row + bank + col);
557 temp = temp * cs * (width / 8);
558
Marek Vasutf97606f2015-08-01 21:47:16 +0200559 debug("%s returns %ld\n", __func__, temp);
Dinh Nguyen9bbd2132015-06-02 22:52:48 -0500560
561 return temp;
562}
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200563
564static int altera_gen5_sdram_ofdata_to_platdata(struct udevice *dev)
565{
566 struct altera_gen5_sdram_platdata *plat = dev->platdata;
567
568 plat->sdr = (struct socfpga_sdr *)devfdt_get_addr_index(dev, 0);
569 if (!plat->sdr)
570 return -ENODEV;
571
572 return 0;
573}
574
575static int altera_gen5_sdram_probe(struct udevice *dev)
576{
577 int ret;
578 unsigned long sdram_size;
579 struct altera_gen5_sdram_platdata *plat = dev->platdata;
580 struct altera_gen5_sdram_priv *priv = dev_get_priv(dev);
581 struct socfpga_sdr_ctrl *sdr_ctrl = &plat->sdr->sdr_ctrl;
582 struct reset_ctl_bulk resets;
583
584 ret = reset_get_bulk(dev, &resets);
585 if (ret) {
586 dev_err(dev, "Can't get reset: %d\n", ret);
587 return -ENODEV;
588 }
589 reset_deassert_bulk(&resets);
590
591 if (sdram_mmr_init_full(sdr_ctrl, 0xffffffff) != 0) {
592 puts("SDRAM init failed.\n");
593 goto failed;
594 }
595
596 debug("SDRAM: Calibrating PHY\n");
597 /* SDRAM calibration */
598 if (sdram_calibration_full(plat->sdr) == 0) {
599 puts("SDRAM calibration failed.\n");
600 goto failed;
601 }
602
603 sdram_size = sdram_calculate_size(sdr_ctrl);
604 debug("SDRAM: %ld MiB\n", sdram_size >> 20);
605
606 /* Sanity check ensure correct SDRAM size specified */
607 if (get_ram_size(0, sdram_size) != sdram_size) {
608 puts("SDRAM size check failed!\n");
609 goto failed;
610 }
611
612 priv->info.base = 0;
613 priv->info.size = sdram_size;
614
615 return 0;
616
617failed:
618 reset_release_bulk(&resets);
619 return -ENODEV;
620}
621
622static int altera_gen5_sdram_get_info(struct udevice *dev,
623 struct ram_info *info)
624{
625 struct altera_gen5_sdram_priv *priv = dev_get_priv(dev);
626
627 info->base = priv->info.base;
628 info->size = priv->info.size;
629
630 return 0;
631}
632
Simon Goldschmidtaacd7b92019-10-23 22:19:37 +0200633static const struct ram_ops altera_gen5_sdram_ops = {
Simon Goldschmidt29873c72019-04-16 22:04:39 +0200634 .get_info = altera_gen5_sdram_get_info,
635};
636
637static const struct udevice_id altera_gen5_sdram_ids[] = {
638 { .compatible = "altr,sdr-ctl" },
639 { /* sentinel */ }
640};
641
642U_BOOT_DRIVER(altera_gen5_sdram) = {
643 .name = "altr_sdr_ctl",
644 .id = UCLASS_RAM,
645 .of_match = altera_gen5_sdram_ids,
646 .ops = &altera_gen5_sdram_ops,
647 .ofdata_to_platdata = altera_gen5_sdram_ofdata_to_platdata,
648 .platdata_auto_alloc_size = sizeof(struct altera_gen5_sdram_platdata),
649 .probe = altera_gen5_sdram_probe,
650 .priv_auto_alloc_size = sizeof(struct altera_gen5_sdram_priv),
651};
652
653#endif /* CONFIG_SPL_BUILD */