1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 #include <fdt_support.h>
13 #include <asm/mpc8349_pci.h>
19 #include <linux/delay.h>
20 #include <mtd/cfi_flash.h>
22 DECLARE_GLOBAL_DATA_PTR;
24 #define IOSYNC asm("eieio")
25 #define ISYNC asm("isync")
26 #define SYNC asm("sync")
27 #define FPW FLASH_PORT_WIDTH
28 #define FPWV FLASH_PORT_WIDTHV
30 #define DDR_MAX_SIZE_PER_CS 0x20000000
32 #if defined(DDR_CASLAT_20)
33 #define TIMING_CASLAT TIMING_CFG1_CASLAT_20
34 #define MODE_CASLAT DDR_MODE_CASLAT_20
36 #define TIMING_CASLAT TIMING_CFG1_CASLAT_25
37 #define MODE_CASLAT DDR_MODE_CASLAT_25
40 #define INITIAL_CS_CONFIG (CSCONFIG_EN | CSCONFIG_ROW_BIT_12 | \
43 /* External definitions */
44 ulong flash_get_size (ulong base, int banknum);
47 static int detect_num_flash_banks(void);
48 static long int get_ddr_bank_size(short cs, long *base);
49 static void set_cs_bounds(short cs, ulong base, ulong size);
50 static void set_cs_config(short cs, long config);
51 static void set_ddr_config(void);
54 static volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
56 /**************************************************************************
57 * Board initialzation after relocation to RAM. Used to detect the number
58 * of Flash banks on TQM834x.
60 int board_early_init_r (void) {
61 /* sanity check, IMMARBAR should be mirrored at offset zero of IMMR */
62 if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
65 /* detect the number of Flash banks */
66 return detect_num_flash_banks();
69 /**************************************************************************
70 * DRAM initalization and size detection
78 /* during size detection, set up the max DDRLAW size */
79 im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE;
80 im->sysconf.ddrlaw[0].ar = (LAWAR_EN | LAWAR_SIZE_2G);
82 /* set CS bounds to maximum size */
83 for(cs = 0; cs < 4; ++cs) {
85 CONFIG_SYS_SDRAM_BASE + (cs * DDR_MAX_SIZE_PER_CS),
88 set_cs_config(cs, INITIAL_CS_CONFIG);
91 /* configure ddr controller */
96 /* enable DDR controller */
97 im->ddr.sdram_cfg = (SDRAM_CFG_MEM_EN |
99 SDRAM_CFG_SDRAM_TYPE_DDR1);
105 for(cs = 0; cs < 4; ++cs) {
106 debug("\nDetecting Bank%d\n", cs);
108 bank_size = get_ddr_bank_size(cs,
109 (long *)(CONFIG_SYS_SDRAM_BASE + size));
112 debug("DDR Bank%d size: %ld MiB\n\n", cs, bank_size >> 20);
114 /* exit if less than one bank */
115 if(size < DDR_MAX_SIZE_PER_CS) break;
123 /**************************************************************************
126 int checkboard (void)
128 puts("Board: TQM834x\n");
131 volatile immap_t * immr;
134 immr = (immap_t *)CONFIG_SYS_IMMR;
135 if (!(immr->reset.rcwh & HRCWH_PCI_HOST)) {
136 printf("PCI: NOT in host mode..?!\n");
142 if (immr->reset.rcwh & HRCWH_64_BIT_PCI)
148 printf("PCI1: %d bit, %d MHz\n", w, f / 1000000);
150 printf("PCI: disabled\n");
156 /**************************************************************************
160 *************************************************************************/
162 /**************************************************************************
163 * Detect the number of flash banks (1 or 2). Store it in
164 * a global variable tqm834x_num_flash_banks.
165 * Bank detection code based on the Monitor code.
167 static int detect_num_flash_banks(void)
169 typedef unsigned long FLASH_PORT_WIDTH;
170 typedef volatile unsigned long FLASH_PORT_WIDTHV;
179 cfi_flash_num_flash_banks = 2; /* assume two banks */
181 /* Get bank 1 and 2 information */
182 bank1_size = flash_get_size(CONFIG_SYS_FLASH_BASE, 0);
183 debug("Bank1 size: %lu\n", bank1_size);
184 bank2_size = flash_get_size(CONFIG_SYS_FLASH_BASE + bank1_size, 1);
185 debug("Bank2 size: %lu\n", bank2_size);
186 total_size = bank1_size + bank2_size;
188 if (bank2_size > 0) {
189 /* Seems like we've got bank 2, but maybe it's mirrored 1 */
191 /* Set the base addresses */
192 bank1_base = (FPWV *) (CONFIG_SYS_FLASH_BASE);
193 bank2_base = (FPWV *) (CONFIG_SYS_FLASH_BASE + bank1_size);
195 /* Put bank 2 into CFI command mode and read */
196 bank2_base[0x55] = 0x00980098;
199 bank2_read = bank2_base[0x10];
201 /* Read from bank 1 (it's in read mode) */
202 bank1_read = bank1_base[0x10];
205 bank1_base[0] = 0x00F000F0;
206 bank2_base[0] = 0x00F000F0;
208 if (bank2_read == bank1_read) {
210 * Looks like just one bank, but not sure yet. Let's
211 * read from bank 2 in autosoelect mode.
213 bank2_base[0x0555] = 0x00AA00AA;
214 bank2_base[0x02AA] = 0x00550055;
215 bank2_base[0x0555] = 0x00900090;
218 bank2_read = bank2_base[0x10];
220 /* Read from bank 1 (it's in read mode) */
221 bank1_read = bank1_base[0x10];
224 bank1_base[0] = 0x00F000F0;
225 bank2_base[0] = 0x00F000F0;
227 if (bank2_read == bank1_read) {
229 * In both CFI command and autoselect modes,
230 * we got the some data reading from Flash.
231 * There is only one mirrored bank.
233 cfi_flash_num_flash_banks = 1;
234 total_size = bank1_size;
239 debug("Number of flash banks detected: %d\n", cfi_flash_num_flash_banks);
241 /* set OR0 and BR0 */
242 set_lbc_or(0, OR_GPCM_CSNT | OR_GPCM_ACS_DIV4 | OR_GPCM_SCY_5 |
243 OR_GPCM_TRLX | (-(total_size) & OR_GPCM_AM));
244 set_lbc_br(0, (CONFIG_SYS_FLASH_BASE & BR_BA) |
245 (BR_MS_GPCM | BR_PS_32 | BR_V));
250 /*************************************************************************
251 * Detect the size of a ddr bank. Sets CS bounds and CS config accordingly.
253 static long int get_ddr_bank_size(short cs, long *base)
255 /* This array lists all valid DDR SDRAM configurations, with
256 * Bank sizes in bytes. (Refer to Table 9-27 in the MPC8349E RM).
257 * The last entry has to to have size equal 0 and is igonred during
258 * autodection. Bank sizes must be in increasing order of size
265 {CSCONFIG_ROW_BIT_12, CSCONFIG_COL_BIT_8, 32 << 20},
266 {CSCONFIG_ROW_BIT_12, CSCONFIG_COL_BIT_9, 64 << 20},
267 {CSCONFIG_ROW_BIT_12, CSCONFIG_COL_BIT_10, 128 << 20},
268 {CSCONFIG_ROW_BIT_13, CSCONFIG_COL_BIT_9, 128 << 20},
269 {CSCONFIG_ROW_BIT_13, CSCONFIG_COL_BIT_10, 256 << 20},
270 {CSCONFIG_ROW_BIT_13, CSCONFIG_COL_BIT_11, 512 << 20},
271 {CSCONFIG_ROW_BIT_14, CSCONFIG_COL_BIT_10, 512 << 20},
272 {CSCONFIG_ROW_BIT_14, CSCONFIG_COL_BIT_11, 1024 << 20},
281 for(i = 0; conf[i].size != 0; ++i) {
283 /* set sdram bank configuration */
284 set_cs_config(cs, CSCONFIG_EN | conf[i].col | conf[i].row);
286 debug("Getting RAM size...\n");
287 size = get_ram_size(base, DDR_MAX_SIZE_PER_CS);
289 if((size == conf[i].size) && (i == detected + 1))
292 debug("Trying %ld x %ld (%ld MiB) at addr %p, detected: %ld MiB\n",
301 /* disable empty cs */
302 debug("\nNo valid configurations for CS%d, disabling...\n", cs);
303 set_cs_config(cs, 0);
307 debug("\nDetected configuration %ld x %ld (%ld MiB) at addr %p\n",
308 conf[detected].row, conf[detected].col, conf[detected].size >> 20, base);
310 /* configure cs ro detected params */
311 set_cs_config(cs, CSCONFIG_EN | conf[detected].row |
314 set_cs_bounds(cs, (long)base, conf[detected].size);
316 return(conf[detected].size);
319 /**************************************************************************
320 * Sets DDR bank CS bounds.
322 static void set_cs_bounds(short cs, ulong base, ulong size)
324 debug("Setting bounds %08lx, %08lx for cs %d\n", base, size, cs);
326 im->ddr.csbnds[cs].csbnds = 0x00000000;
328 im->ddr.csbnds[cs].csbnds =
329 ((base >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
330 (((base + size - 1) >> CSBNDS_EA_SHIFT) &
336 /**************************************************************************
337 * Sets DDR banks CS configuration.
338 * config == 0x00000000 disables the CS.
340 static void set_cs_config(short cs, long config)
342 debug("Setting config %08lx for cs %d\n", config, cs);
343 im->ddr.cs_config[cs] = config;
347 /**************************************************************************
348 * Sets DDR clocks, timings and configuration.
350 static void set_ddr_config(void) {
352 im->ddr.sdram_clk_cntl = DDR_SDRAM_CLK_CNTL_SS_EN |
353 DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05;
356 /* timing configuration */
357 im->ddr.timing_cfg_1 =
358 (4 << TIMING_CFG1_PRETOACT_SHIFT) |
359 (7 << TIMING_CFG1_ACTTOPRE_SHIFT) |
360 (4 << TIMING_CFG1_ACTTORW_SHIFT) |
361 (5 << TIMING_CFG1_REFREC_SHIFT) |
362 (3 << TIMING_CFG1_WRREC_SHIFT) |
363 (3 << TIMING_CFG1_ACTTOACT_SHIFT) |
364 (1 << TIMING_CFG1_WRTORD_SHIFT) |
365 (TIMING_CFG1_CASLAT & TIMING_CASLAT);
367 im->ddr.timing_cfg_2 =
368 TIMING_CFG2_CPO_DEF |
369 (2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT);
372 /* don't enable DDR controller yet */
375 SDRAM_CFG_SDRAM_TYPE_DDR1;
380 ((DDR_MODE_EXT_MODEREG | DDR_MODE_WEAK) <<
381 SDRAM_MODE_ESD_SHIFT) |
382 ((DDR_MODE_MODEREG | DDR_MODE_BLEN_4) <<
383 SDRAM_MODE_SD_SHIFT) |
384 ((DDR_MODE_CASLAT << SDRAM_MODE_SD_SHIFT) &
388 /* Set fast SDRAM refresh rate */
389 im->ddr.sdram_interval =
390 (DDR_REFINT_166MHZ_7US << SDRAM_INTERVAL_REFINT_SHIFT) |
391 (DDR_BSTOPRE << SDRAM_INTERVAL_BSTOPRE_SHIFT);
394 /* Workaround for DDR6 Erratum
395 * see MPC8349E Device Errata Rev.8, 2/2006
396 * This workaround influences the MPC internal "input enables"
397 * dependent on CAS latency and MPC revision. According to errata
398 * sheet the internal reserved registers for this workaround are
399 * not available from revision 2.0 and up.
402 /* Get REVID from register SPRIDR. Skip workaround if rev >= 2.0
405 if ((im->sysconf.spridr & SPRIDR_REVID) < 0x200) {
407 /* There is a internal reserved register at IMMRBAR+0x2F00
408 * which has to be written with a certain value defined by
411 u32 *reserved_p = (u32 *)((u8 *)im + 0x2f00);
413 #if defined(DDR_CASLAT_20)
414 *reserved_p = 0x201c0000;
416 *reserved_p = 0x202c0000;
421 #ifdef CONFIG_OF_BOARD_SETUP
422 int ft_board_setup(void *blob, bd_t *bd)
424 ft_cpu_setup(blob, bd);
427 ft_pci_setup(blob, bd);
428 #endif /* CONFIG_PCI */
432 #endif /* CONFIG_OF_BOARD_SETUP */