1 /*
2 *
3 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
4 *
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the
16 * distribution.
17 *
18 * Neither the name of Texas Instruments Incorporated nor the names of
19 * its contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
38 /*****************************************************************************************
39 * FILE PURPOSE: Perform the top level boot
40 *****************************************************************************************
41 * FILE NAME: iblmain.c
42 *
43 * DESCRIPTION: The top level boot examines the boot configuration and performs boot
44 * based on this configuration
45 *
46 * @file iblmain.c
47 *
48 * @brief
49 * This file is used to launch a boot based on the boot configuration structure
50 *
51 *****************************************************************************************/
52 #include "ibl.h"
53 #include "iblloc.h"
54 #include "iblcfg.h"
55 #include "device.h"
56 #include "ethboot.h"
57 #include "nandboot.h"
58 #include "norboot.h"
59 #include "bis.h"
60 #include "coffwrap.h"
61 #include "iblbtbl.h"
62 #include "iblblob.h"
63 #include "timer.h"
64 #include "i2c.h"
65 #include "spi_api.h"
66 #include "ibl_elf.h"
67 #include <string.h>
69 extern cregister unsigned int IER;
71 uint32 iblEndianIdx = 0;
72 uint32 iblImageIdx = 0;
74 /**
75 * @brief
76 * Data structures shared between the 1st and 2nd stage IBL load
77 * are declared in a single header file, included in both stages
78 */
79 #include "iblStage.h"
83 /* Eat printfs */
84 void mprintf(char *x, ...) { }
86 /**
87 * @b Description
88 * @n
89 *
90 * Returns TRUE if the input priority is valid and enabled
91 */
92 BOOL iblPriorityIsValid (uint32 priority)
93 {
94 if ( (priority >= ibl_HIGHEST_PRIORITY) &&
95 (priority <= ibl_LOWEST_PRIORITY) )
97 return (TRUE);
100 return (FALSE);
102 }
104 /**
105 * @b Description
106 * @n
107 *
108 * Returns TRUE if the mac address is 0
109 */
110 BOOL iblMacAddrIsZero (uint8 *maddr)
111 {
112 int32 i;
114 for (i = 0; i < 6; i++)
115 if (maddr[i] != 0)
116 return (FALSE);
118 return (TRUE);
120 }
122 /**
123 * @b Description
124 * @n
125 *
126 * For NAND and NOR boots, configure the specified peripheral or memory interface
127 */
128 void iblPmemCfg (int32 interface, int32 port, bool enableNand)
129 {
130 int32 ret;
132 switch (interface) {
134 #if (!defined(EXCLUDE_NAND_GPIO))
136 case ibl_PMEM_IF_GPIO:
137 ret = devicePowerPeriph (TARGET_PWR_GPIO);
138 break;
139 #endif
141 #if (!defined(EXCLUDE_NOR_SPI) && !defined(EXCLUDE_NAND_SPI))
143 case ibl_PMEM_IF_SPI: {
145 Uint32 v;
146 spiConfig_t cfg;
148 ret = devicePowerPeriph (TARGET_PWR_SPI);
149 if (ret != 0)
150 break;
152 cfg.port = port;
153 cfg.mode = ibl.spiConfig.mode;
154 cfg.addrWidth = ibl.spiConfig.addrWidth;
155 cfg.npin = ibl.spiConfig.nPins;
156 cfg.csel = ibl.spiConfig.csel;
157 cfg.c2tdelay = ibl.spiConfig.c2tdelay;
159 /* On c66x devices the PLL module has a built in divide by 6, and the SPI
160 * has a maximum clock divider value of 0xff */
161 v = ibl.pllConfig[ibl_MAIN_PLL].pllOutFreqMhz / (DEVICE_SPI_MOD_DIVIDER * ibl.spiConfig.busFreqMHz);
162 if (v > 0xff)
163 v = 0xff;
165 cfg.clkdiv = (UINT16) v;
167 ret = hwSpiConfig (&cfg);
168 if (ret != 0) {
169 iblStatus.iblFail = ibl_FAIL_CODE_SPI_PARAMS;
170 return;
171 }
173 }
174 break;
175 #endif
177 #if (!defined(EXCLUDE_NOR_EMIF) || !defined(EXCLUDE_NAND_EMIF))
179 case ibl_PMEM_IF_CHIPSEL_2:
180 case ibl_PMEM_IF_CHIPSEL_3:
181 case ibl_PMEM_IF_CHIPSEL_4:
182 case ibl_PMEM_IF_CHIPSEL_5: {
184 int i;
186 /* Locate the configuration corresponding to this chip select space */
187 for (i = 0; i < ibl_MAX_EMIF_PMEM; i++)
188 if (ibl.emifConfig[i].csSpace == interface)
189 break;
191 if (i == ibl_MAX_EMIF_PMEM) {
192 iblStatus.iblFail = ibl_FAIL_CODE_NO_EMIF_CFG;
193 return;
194 }
196 ret = devicePowerPeriph (TARGET_PWR_EMIF);
197 if (ret != 0)
198 break;
200 if (hwEmif25Init (interface, ibl.emifConfig[i].busWidth, ibl.emifConfig[i].waitEnable, enableNand) != 0)
201 iblStatus.iblFail = ibl_FAIL_CODE_EMIF_CFG_FAIL;
203 }
204 break;
206 #endif
208 default:
212 iblStatus.iblFail = ibl_FAIL_CODE_INVALID_NAND_PERIPH;
213 return;
214 }
216 if (ret != 0) {
217 iblStatus.iblFail = ibl_FAIL_CODE_PERIPH_POWER_UP;
218 return;
219 }
221 }
225 /**
226 * @b Description
227 * @n
228 *
229 * The main function kicks off the boot. If it does not find the magic value in the
230 * configuration array then default values are loaded. This default load
231 * is done only once at the start of boot.
232 *
233 * @retval
234 * None
235 */
236 void main (void)
237 {
238 int32 i, j;
239 UINT32 v, boot_mode_idx, boot_para_idx;
240 unsigned int dip_setting;
242 /* Initialize the status structure */
243 iblMemset (&iblStatus, 0, sizeof(iblStatus_t));
244 iblStatus.iblMagic = ibl_MAGIC_VALUE;
245 iblStatus.iblVersion = ibl_VERSION;
248 /* Power up the timer */
249 devicePowerPeriph (TARGET_PWR_TIMER_0);
251 /* Initialize the system timer (software tracking of the hardware timer state) */
252 timer_init ();
254 /* Load default mac addresses for ethernet boot if requested */
255 for (i = 0; i < ibl_N_BOOT_MODES; i++) {
257 if (ibl.bootModes[i].bootMode == ibl_BOOT_MODE_TFTP) {
259 if (iblMacAddrIsZero (ibl.bootModes[i].u.ethBoot.ethInfo.hwAddress))
261 deviceLoadDefaultEthAddress (ibl.bootModes[i].u.ethBoot.ethInfo.hwAddress);
262 }
263 }
266 /* DDR configuration is device specific */
267 deviceDdrConfig ();
269 /* Try booting forever */
270 for (;;) {
272 #ifndef EXCLUDE_MULTI_BOOT
273 v = DEVICE_REG32_R(DEVICE_JTAG_ID_REG);
274 v &= DEVICE_JTAG_ID_MASK;
275 if (
276 (v == DEVICE_C6678_JTAG_ID_VAL) ||
277 (v == DEVICE_C6670_JTAG_ID_VAL)
278 )
279 {
280 IER = 0;
282 /* For C66x devices, check the DEVSTAT register to find which image on which device to boot. */
283 v = DEVICE_REG32_R(DEVICE_REG_DEVSTAT);
285 /* Get the Endianness */
286 if (ibl_N_ENDIANS == 1)
287 {
288 iblEndianIdx = 0;
289 }
290 else
291 {
292 if (v & ibl_ENDIAN_LITTLE)
293 {
294 iblEndianIdx = 0;
295 }
296 else
297 {
298 iblEndianIdx = 1;
299 }
300 }
302 /* Get the boot mode index */
303 boot_para_idx = BOOT_READ_BITFIELD(v,8,4);
305 /* Only 1 image supported for TFTP boot */
306 if (boot_para_idx > (ibl_N_IMAGES*(ibl_N_BOOT_MODES-1)))
307 {
308 /* boot parameter index not supported */
309 continue;
310 }
311 boot_mode_idx = boot_para_idx/ibl_N_IMAGES;
312 /* Get the boot image index */
313 iblImageIdx = boot_para_idx & (ibl_N_IMAGES - 1);
315 iblStatus.activeBoot = ibl.bootModes[boot_mode_idx].bootMode;
317 switch (ibl.bootModes[boot_mode_idx].bootMode)
318 {
319 #ifndef EXCLUDE_ETH
320 case ibl_BOOT_MODE_TFTP:
321 iblStatus.activeDevice = ibl_ACTIVE_DEVICE_ETH;
322 iblMemcpy (&iblStatus.ethParams, &ibl.bootModes[boot_mode_idx].u.ethBoot.ethInfo, sizeof(iblEthBootInfo_t));
323 iblEthBoot (boot_mode_idx);
324 break;
325 #endif
327 #if ((!defined(EXCLUDE_NAND_EMIF)) || (!defined(EXCLUDE_NAND_GPIO)))
328 case ibl_BOOT_MODE_NAND:
329 iblPmemCfg (ibl.bootModes[boot_mode_idx].u.nandBoot.interface, ibl.bootModes[boot_mode_idx].port, TRUE);
330 memset ((void *)0x80000000, 0, 0x20000000);
331 iblNandBoot (boot_mode_idx);
332 break;
333 #endif
335 #if (!defined(EXCLUDE_NOR_EMIF) && !defined(EXCLUDE_NOR_SPI))
336 case ibl_BOOT_MODE_NOR:
337 iblPmemCfg (ibl.bootModes[boot_mode_idx].u.norBoot.interface, ibl.bootModes[boot_mode_idx].port, TRUE);
338 iblNorBoot (boot_mode_idx);
339 break;
340 #endif
341 }
342 iblStatus.heartBeat += 1;
343 }
344 else
345 #endif
346 {
348 dip_setting = get_device_switch_setting();
350 if (dip_setting == 0)
351 boot_mode_idx = 0;
352 else if (dip_setting == 1)
353 boot_mode_idx = 1;
355 iblStatus.activeBoot = ibl.bootModes[boot_mode_idx].bootMode;
357 switch (ibl.bootModes[boot_mode_idx].bootMode) {
358 #ifndef EXCLUDE_ETH
359 case ibl_BOOT_MODE_TFTP:
360 iblStatus.activeDevice = ibl_ACTIVE_DEVICE_ETH;
361 iblMemcpy (&iblStatus.ethParams, &ibl.bootModes[boot_mode_idx].u.ethBoot.ethInfo, sizeof(iblEthBootInfo_t));
362 iblEthBoot (boot_mode_idx);
363 break;
364 #endif
366 #if ((!defined(EXCLUDE_NAND_EMIF)) || (!defined(EXCLUDE_NAND_GPIO)))
367 case ibl_BOOT_MODE_NAND:
368 iblPmemCfg (ibl.bootModes[boot_mode_idx].u.nandBoot.interface, ibl.bootModes[boot_mode_idx].port, TRUE);
369 iblNandBoot (boot_mode_idx);
370 break;
371 #endif
372 }
373 iblStatus.heartBeat += 1;
374 }
376 }
377 } /* main */
381 /**
382 * @b Description
383 * @n
384 *
385 * The ibl boot function links a device to a data format. The data format
386 * parser pulls data from the boot device
387 *
388 * @param[in] bootFxn The structure containing the boot device functions
389 *
390 * @retval
391 * None
392 */
393 Uint32 iblBoot (BOOT_MODULE_FXN_TABLE *bootFxn, Int32 dataFormat, void *formatParams)
394 {
395 Uint32 entry = 0;
396 Uint32 value32;
397 Uint8 dataBuf[4];
398 Uint16 value16;
400 /* Determine the data format if required */
401 if (dataFormat == ibl_BOOT_FORMAT_AUTO) {
403 (*bootFxn->peek)(dataBuf, sizeof(dataBuf));
404 value32 = (dataBuf[0] << 24) | (dataBuf[1] << 16) | (dataBuf[2] << 8) | (dataBuf[3] << 0);
405 value16 = (dataBuf[0] << 8) | (dataBuf[1] << 0);
407 /* BIS */
408 #ifndef EXCLUDE_BIS
409 if (value32 == BIS_MAGIC_NUMBER)
410 dataFormat = ibl_BOOT_FORMAT_BIS;
411 #endif
413 #ifndef EXCLUDE_COFF
414 if (iblIsCoff (value16))
415 dataFormat = ibl_BOOT_FORMAT_COFF;
416 #endif
418 #ifndef EXCLUDE_ELF
419 if (iblIsElf (dataBuf))
420 dataFormat = ibl_BOOT_FORMAT_ELF;
421 #endif
423 if (dataFormat == ibl_BOOT_FORMAT_AUTO) {
424 iblStatus.autoDetectFailCnt += 1;
425 return (0);
426 }
427 }
430 iblStatus.activeFileFormat = dataFormat;
433 /* Invoke the parser */
434 switch (dataFormat) {
436 #ifndef EXCLUDE_BIS
437 case ibl_BOOT_FORMAT_BIS:
438 iblBootBis (bootFxn, &entry);
439 break;
440 #endif
442 #ifndef EXCLUDE_COFF
443 case ibl_BOOT_FORMAT_COFF:
444 iblBootCoff (bootFxn, &entry);
445 break;
446 #endif
448 case ibl_BOOT_FORMAT_BTBL:
449 iblBootBtbl (bootFxn, &entry);
450 break;
452 #ifndef EXCLUDE_BLOB
453 case ibl_BOOT_FORMAT_BBLOB:
454 iblBootBlob (bootFxn, &entry, formatParams);
455 break;
456 #endif
458 #ifndef EXCLUDE_ELF
459 case ibl_BOOT_FORMAT_ELF:
460 iblBootElf (bootFxn, &entry);
461 break;
462 #endif
464 default:
465 iblStatus.invalidDataFormatSpec += 1;
466 break;
468 }
471 return (entry);
473 }