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arm: vf610: improve evaluation of reset source
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1 /*
2  * Copyright 2014 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <i2c.h>
9 #include <asm/io.h>
10 #include <asm/arch/immap_ls102xa.h>
11 #include <asm/arch/clock.h>
12 #include <asm/arch/fsl_serdes.h>
13 #include <mmc.h>
14 #include <fsl_esdhc.h>
15 #include <fsl_ifc.h>
16 #include <netdev.h>
17 #include <fsl_mdio.h>
18 #include <tsec.h>
19 #include <fsl_sec.h>
20
21 DECLARE_GLOBAL_DATA_PTR;
22
23 #define VERSION_MASK            0x00FF
24 #define BANK_MASK               0x0001
25 #define CONFIG_RESET            0x1
26 #define INIT_RESET              0x1
27
28 #define CPLD_SET_MUX_SERDES     0x20
29 #define CPLD_SET_BOOT_BANK      0x40
30
31 #define BOOT_FROM_UPPER_BANK    0x0
32 #define BOOT_FROM_LOWER_BANK    0x1
33
34 #define LANEB_SATA              (0x01)
35 #define LANEB_SGMII1            (0x02)
36 #define LANEC_SGMII1            (0x04)
37 #define LANEC_PCIEX1            (0x08)
38 #define LANED_PCIEX2            (0x10)
39 #define LANED_SGMII2            (0x20)
40
41 #define MASK_LANE_B             0x1
42 #define MASK_LANE_C             0x2
43 #define MASK_LANE_D             0x4
44 #define MASK_SGMII              0x8
45
46 #define KEEP_STATUS             0x0
47 #define NEED_RESET              0x1
48
49 struct cpld_data {
50         u8 cpld_ver;            /* cpld revision */
51         u8 cpld_ver_sub;        /* cpld sub revision */
52         u8 pcba_ver;            /* pcb revision number */
53         u8 system_rst;          /* reset system by cpld */
54         u8 soft_mux_on;         /* CPLD override physical switches Enable */
55         u8 cfg_rcw_src1;        /* Reset config word 1 */
56         u8 cfg_rcw_src2;        /* Reset config word 2 */
57         u8 vbank;               /* Flash bank selection Control */
58         u8 gpio;                /* GPIO for TWR-ELEV */
59         u8 i2c3_ifc_mux;
60         u8 mux_spi2;
61         u8 can3_usb2_mux;       /* CAN3 and USB2 Selection */
62         u8 qe_lcd_mux;          /* QE and LCD Selection */
63         u8 serdes_mux;          /* Multiplexed pins for SerDes Lanes */
64         u8 global_rst;          /* reset with init CPLD reg to default */
65         u8 rev1;                /* Reserved */
66         u8 rev2;                /* Reserved */
67 };
68
69 static void convert_serdes_mux(int type, int need_reset);
70
71 void cpld_show(void)
72 {
73         struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
74
75         printf("CPLD:  V%x.%x\nPCBA:  V%x.0\nVBank: %d\n",
76                in_8(&cpld_data->cpld_ver) & VERSION_MASK,
77                in_8(&cpld_data->cpld_ver_sub) & VERSION_MASK,
78                in_8(&cpld_data->pcba_ver) & VERSION_MASK,
79                in_8(&cpld_data->vbank) & BANK_MASK);
80
81 #ifdef CONFIG_DEBUG
82         printf("soft_mux_on =%x\n",
83                in_8(&cpld_data->soft_mux_on));
84         printf("cfg_rcw_src1 =%x\n",
85                in_8(&cpld_data->cfg_rcw_src1));
86         printf("cfg_rcw_src2 =%x\n",
87                in_8(&cpld_data->cfg_rcw_src2));
88         printf("vbank =%x\n",
89                in_8(&cpld_data->vbank));
90         printf("gpio =%x\n",
91                in_8(&cpld_data->gpio));
92         printf("i2c3_ifc_mux =%x\n",
93                in_8(&cpld_data->i2c3_ifc_mux));
94         printf("mux_spi2 =%x\n",
95                in_8(&cpld_data->mux_spi2));
96         printf("can3_usb2_mux =%x\n",
97                in_8(&cpld_data->can3_usb2_mux));
98         printf("qe_lcd_mux =%x\n",
99                in_8(&cpld_data->qe_lcd_mux));
100         printf("serdes_mux =%x\n",
101                in_8(&cpld_data->serdes_mux));
102 #endif
103 }
104
105 int checkboard(void)
106 {
107         puts("Board: LS1021ATWR\n");
108         cpld_show();
109
110         return 0;
111 }
112
113 void ddrmc_init(void)
114 {
115         struct ccsr_ddr *ddr = (struct ccsr_ddr *)CONFIG_SYS_FSL_DDR_ADDR;
116
117         out_be32(&ddr->sdram_cfg, DDR_SDRAM_CFG);
118
119         out_be32(&ddr->cs0_bnds, DDR_CS0_BNDS);
120         out_be32(&ddr->cs0_config, DDR_CS0_CONFIG);
121
122         out_be32(&ddr->timing_cfg_0, DDR_TIMING_CFG_0);
123         out_be32(&ddr->timing_cfg_1, DDR_TIMING_CFG_1);
124         out_be32(&ddr->timing_cfg_2, DDR_TIMING_CFG_2);
125         out_be32(&ddr->timing_cfg_3, DDR_TIMING_CFG_3);
126         out_be32(&ddr->timing_cfg_4, DDR_TIMING_CFG_4);
127         out_be32(&ddr->timing_cfg_5, DDR_TIMING_CFG_5);
128
129         out_be32(&ddr->sdram_cfg_2,  DDR_SDRAM_CFG_2);
130
131         out_be32(&ddr->sdram_mode, DDR_SDRAM_MODE);
132         out_be32(&ddr->sdram_mode_2, DDR_SDRAM_MODE_2);
133
134         out_be32(&ddr->sdram_interval, DDR_SDRAM_INTERVAL);
135
136         out_be32(&ddr->ddr_wrlvl_cntl, DDR_DDR_WRLVL_CNTL);
137
138         out_be32(&ddr->ddr_wrlvl_cntl_2, DDR_DDR_WRLVL_CNTL_2);
139         out_be32(&ddr->ddr_wrlvl_cntl_3, DDR_DDR_WRLVL_CNTL_3);
140
141         out_be32(&ddr->ddr_cdr1, DDR_DDR_CDR1);
142         out_be32(&ddr->ddr_cdr2, DDR_DDR_CDR2);
143
144         out_be32(&ddr->sdram_clk_cntl, DDR_SDRAM_CLK_CNTL);
145         out_be32(&ddr->ddr_zq_cntl, DDR_DDR_ZQ_CNTL);
146
147         out_be32(&ddr->cs0_config_2, DDR_CS0_CONFIG_2);
148         udelay(1);
149         out_be32(&ddr->sdram_cfg, DDR_SDRAM_CFG | DDR_SDRAM_CFG_MEM_EN);
150 }
151
152 int dram_init(void)
153 {
154 #if (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD))
155         ddrmc_init();
156 #endif
157
158         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
159         return 0;
160 }
161
162 #ifdef CONFIG_FSL_ESDHC
163 struct fsl_esdhc_cfg esdhc_cfg[1] = {
164         {CONFIG_SYS_FSL_ESDHC_ADDR},
165 };
166
167 int board_mmc_init(bd_t *bis)
168 {
169         esdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
170
171         return fsl_esdhc_initialize(bis, &esdhc_cfg[0]);
172 }
173 #endif
174
175 #ifdef CONFIG_TSEC_ENET
176 int board_eth_init(bd_t *bis)
177 {
178         struct fsl_pq_mdio_info mdio_info;
179         struct tsec_info_struct tsec_info[4];
180         int num = 0;
181
182 #ifdef CONFIG_TSEC1
183         SET_STD_TSEC_INFO(tsec_info[num], 1);
184         if (is_serdes_configured(SGMII_TSEC1)) {
185                 puts("eTSEC1 is in sgmii mode.\n");
186                 tsec_info[num].flags |= TSEC_SGMII;
187         }
188         num++;
189 #endif
190 #ifdef CONFIG_TSEC2
191         SET_STD_TSEC_INFO(tsec_info[num], 2);
192         if (is_serdes_configured(SGMII_TSEC2)) {
193                 puts("eTSEC2 is in sgmii mode.\n");
194                 tsec_info[num].flags |= TSEC_SGMII;
195         }
196         num++;
197 #endif
198 #ifdef CONFIG_TSEC3
199         SET_STD_TSEC_INFO(tsec_info[num], 3);
200         num++;
201 #endif
202         if (!num) {
203                 printf("No TSECs initialized\n");
204                 return 0;
205         }
206
207         mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR;
208         mdio_info.name = DEFAULT_MII_NAME;
209         fsl_pq_mdio_init(bis, &mdio_info);
210
211         tsec_eth_init(bis, tsec_info, num);
212
213         return pci_eth_init(bis);
214 }
215 #endif
216
217 int config_serdes_mux(void)
218 {
219         struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
220         u32 protocol = in_be32(&gur->rcwsr[4]) & RCWSR4_SRDS1_PRTCL_MASK;
221
222         protocol >>= RCWSR4_SRDS1_PRTCL_SHIFT;
223         switch (protocol) {
224         case 0x10:
225                 convert_serdes_mux(LANEB_SATA, KEEP_STATUS);
226                 convert_serdes_mux(LANED_PCIEX2 |
227                                 LANEC_PCIEX1, KEEP_STATUS);
228                 break;
229         case 0x20:
230                 convert_serdes_mux(LANEB_SGMII1, KEEP_STATUS);
231                 convert_serdes_mux(LANEC_PCIEX1, KEEP_STATUS);
232                 convert_serdes_mux(LANED_SGMII2, KEEP_STATUS);
233                 break;
234         case 0x30:
235                 convert_serdes_mux(LANEB_SATA, KEEP_STATUS);
236                 convert_serdes_mux(LANEC_SGMII1, KEEP_STATUS);
237                 convert_serdes_mux(LANED_SGMII2, KEEP_STATUS);
238                 break;
239         case 0x70:
240                 convert_serdes_mux(LANEB_SATA, KEEP_STATUS);
241                 convert_serdes_mux(LANEC_PCIEX1, KEEP_STATUS);
242                 convert_serdes_mux(LANED_SGMII2, KEEP_STATUS);
243                 break;
244         }
245
246         return 0;
247 }
248
249 int board_early_init_f(void)
250 {
251         struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
252
253 #ifdef CONFIG_TSEC_ENET
254         out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_REV);
255         out_be32(&scfg->etsecdmamcr, SCFG_ETSECDMAMCR_LE_BD_FR);
256         out_be32(&scfg->etsecmcr, SCFG_ETSECCMCR_GE2_CLK125);
257         udelay(10);
258         out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_NOREV);
259 #endif
260
261 #ifdef CONFIG_FSL_IFC
262         init_early_memctl_regs();
263 #endif
264
265 #ifdef CONFIG_FSL_DCU_FB
266         out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_REV);
267         out_be32(&scfg->pixclkcr, SCFG_PIXCLKCR_PXCKEN);
268         out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_NOREV);
269 #endif
270
271         return 0;
272 }
273
274 int board_init(void)
275 {
276 #ifndef CONFIG_SYS_FSL_NO_SERDES
277         fsl_serdes_init();
278         config_serdes_mux();
279 #endif
280
281         return 0;
282 }
283
284 #if defined(CONFIG_MISC_INIT_R)
285 int misc_init_r(void)
286 {
287 #ifdef CONFIG_FSL_CAAM
288         return sec_init();
289 #endif
290 }
291 #endif
292
293 void ft_board_setup(void *blob, bd_t *bd)
294 {
295         ft_cpu_setup(blob, bd);
296 }
297
298 u8 flash_read8(void *addr)
299 {
300         return __raw_readb(addr + 1);
301 }
302
303 void flash_write16(u16 val, void *addr)
304 {
305         u16 shftval = (((val >> 8) & 0xff) | ((val << 8) & 0xff00));
306
307         __raw_writew(shftval, addr);
308 }
309
310 u16 flash_read16(void *addr)
311 {
312         u16 val = __raw_readw(addr);
313
314         return (((val) >> 8) & 0x00ff) | (((val) << 8) & 0xff00);
315 }
316
317 static void convert_flash_bank(char bank)
318 {
319         struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
320
321         printf("Now switch to boot from flash bank %d.\n", bank);
322         cpld_data->soft_mux_on = CPLD_SET_BOOT_BANK;
323         cpld_data->vbank = bank;
324
325         printf("Reset board to enable configuration.\n");
326         cpld_data->system_rst = CONFIG_RESET;
327 }
328
329 static int flash_bank_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
330                           char * const argv[])
331 {
332         if (argc != 2)
333                 return CMD_RET_USAGE;
334         if (strcmp(argv[1], "0") == 0)
335                 convert_flash_bank(BOOT_FROM_UPPER_BANK);
336         else if (strcmp(argv[1], "1") == 0)
337                 convert_flash_bank(BOOT_FROM_LOWER_BANK);
338         else
339                 return CMD_RET_USAGE;
340
341         return 0;
342 }
343
344 U_BOOT_CMD(
345         boot_bank, 2, 0, flash_bank_cmd,
346         "Flash bank Selection Control",
347         "bank[0-upper bank/1-lower bank] (e.g. boot_bank 0)"
348 );
349
350 static int cpld_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
351                           char * const argv[])
352 {
353         struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
354
355         if (argc > 2)
356                 return CMD_RET_USAGE;
357         if ((argc == 1) || (strcmp(argv[1], "conf") == 0))
358                 cpld_data->system_rst = CONFIG_RESET;
359         else if (strcmp(argv[1], "init") == 0)
360                 cpld_data->global_rst = INIT_RESET;
361         else
362                 return CMD_RET_USAGE;
363
364         return 0;
365 }
366
367 U_BOOT_CMD(
368         cpld_reset, 2, 0, cpld_reset_cmd,
369         "Reset via CPLD",
370         "conf\n"
371         "       -reset with current CPLD configuration\n"
372         "init\n"
373         "       -reset and initial CPLD configuration with default value"
374
375 );
376
377 static void convert_serdes_mux(int type, int need_reset)
378 {
379         char current_serdes;
380         struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
381
382         current_serdes = cpld_data->serdes_mux;
383
384         switch (type) {
385         case LANEB_SATA:
386                 current_serdes &= ~MASK_LANE_B;
387                 break;
388         case LANEB_SGMII1:
389                 current_serdes |= (MASK_LANE_B | MASK_SGMII | MASK_LANE_C);
390                 break;
391         case LANEC_SGMII1:
392                 current_serdes &= ~(MASK_LANE_B | MASK_SGMII | MASK_LANE_C);
393                 break;
394         case LANED_SGMII2:
395                 current_serdes |= MASK_LANE_D;
396                 break;
397         case LANEC_PCIEX1:
398                 current_serdes |= MASK_LANE_C;
399                 break;
400         case (LANED_PCIEX2 | LANEC_PCIEX1):
401                 current_serdes |= MASK_LANE_C;
402                 current_serdes &= ~MASK_LANE_D;
403                 break;
404         default:
405                 printf("CPLD serdes MUX: unsupported MUX type 0x%x\n", type);
406                 return;
407         }
408
409         cpld_data->soft_mux_on |= CPLD_SET_MUX_SERDES;
410         cpld_data->serdes_mux = current_serdes;
411
412         if (need_reset == 1) {
413                 printf("Reset board to enable configuration\n");
414                 cpld_data->system_rst = CONFIG_RESET;
415         }
416 }
417
418 void print_serdes_mux(void)
419 {
420         char current_serdes;
421         struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
422
423         current_serdes = cpld_data->serdes_mux;
424
425         printf("Serdes Lane B: ");
426         if ((current_serdes & MASK_LANE_B) == 0)
427                 printf("SATA,\n");
428         else
429                 printf("SGMII 1,\n");
430
431         printf("Serdes Lane C: ");
432         if ((current_serdes & MASK_LANE_C) == 0)
433                 printf("SGMII 1,\n");
434         else
435                 printf("PCIe,\n");
436
437         printf("Serdes Lane D: ");
438         if ((current_serdes & MASK_LANE_D) == 0)
439                 printf("PCIe,\n");
440         else
441                 printf("SGMII 2,\n");
442
443         printf("SGMII 1 is on lane ");
444         if ((current_serdes & MASK_SGMII) == 0)
445                 printf("C.\n");
446         else
447                 printf("B.\n");
448 }
449
450 static int serdes_mux_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
451                           char * const argv[])
452 {
453         if (argc != 2)
454                 return CMD_RET_USAGE;
455         if (strcmp(argv[1], "sata") == 0) {
456                 printf("Set serdes lane B to SATA.\n");
457                 convert_serdes_mux(LANEB_SATA, NEED_RESET);
458         } else if (strcmp(argv[1], "sgmii1b") == 0) {
459                 printf("Set serdes lane B to SGMII 1.\n");
460                 convert_serdes_mux(LANEB_SGMII1, NEED_RESET);
461         } else if (strcmp(argv[1], "sgmii1c") == 0) {
462                 printf("Set serdes lane C to SGMII 1.\n");
463                 convert_serdes_mux(LANEC_SGMII1, NEED_RESET);
464         } else if (strcmp(argv[1], "sgmii2") == 0) {
465                 printf("Set serdes lane D to SGMII 2.\n");
466                 convert_serdes_mux(LANED_SGMII2, NEED_RESET);
467         } else if (strcmp(argv[1], "pciex1") == 0) {
468                 printf("Set serdes lane C to PCIe X1.\n");
469                 convert_serdes_mux(LANEC_PCIEX1, NEED_RESET);
470         } else if (strcmp(argv[1], "pciex2") == 0) {
471                 printf("Set serdes lane C & lane D to PCIe X2.\n");
472                 convert_serdes_mux((LANED_PCIEX2 | LANEC_PCIEX1), NEED_RESET);
473         } else if (strcmp(argv[1], "show") == 0) {
474                 print_serdes_mux();
475         } else {
476                 return CMD_RET_USAGE;
477         }
478
479         return 0;
480 }
481
482 U_BOOT_CMD(
483         lane_bank, 2, 0, serdes_mux_cmd,
484         "Multiplexed function setting for SerDes Lanes",
485         "sata\n"
486         "       -change lane B to sata\n"
487         "lane_bank sgmii1b\n"
488         "       -change lane B to SGMII1\n"
489         "lane_bank sgmii1c\n"
490         "       -change lane C to SGMII1\n"
491         "lane_bank sgmii2\n"
492         "       -change lane D to SGMII2\n"
493         "lane_bank pciex1\n"
494         "       -change lane C to PCIeX1\n"
495         "lane_bank pciex2\n"
496         "       -change lane C & lane D to PCIeX2\n"
497         "\nWARNING: If you aren't familiar with the setting of serdes, don't try to change anything!\n"
498 );