mtk_wdt.c 17 KB

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  1. /* Copyright Statement:
  2. *
  3. * This software/firmware and related documentation ("MediaTek Software") are
  4. * protected under relevant copyright laws. The information contained herein
  5. * is confidential and proprietary to MediaTek Inc. and/or its licensors.
  6. * Without the prior written permission of MediaTek inc. and/or its licensors,
  7. * any reproduction, modification, use or disclosure of MediaTek Software,
  8. * and information contained herein, in whole or in part, shall be strictly prohibited.
  9. */
  10. /* MediaTek Inc. (C) 2015. All rights reserved.
  11. *
  12. * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
  13. * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
  14. * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
  15. * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
  16. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
  17. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
  18. * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
  19. * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
  20. * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
  21. * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
  22. * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
  23. * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
  24. * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
  25. * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
  26. * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
  27. * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
  28. * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
  29. * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
  30. */
  31. #include <platform/mt_reg_base.h>
  32. #include <platform/mt_typedefs.h>
  33. #include <platform/mtk_wdt.h>
  34. #include <platform/boot_mode.h>
  35. #include <platform/mt_gpt.h>
  36. #include <platform/mt_pmic.h>
  37. #include <platform/mt_pmic_wrap_init.h>
  38. #include <platform/upmu_common.h>
  39. #include <debug.h>
  40. #include <lk_builtin_dtb.h>
  41. #ifdef DEVICE_TREE_SUPPORT
  42. #include <libfdt.h>
  43. #endif
  44. #include "log_store_lk.h"
  45. #define WDTTAG "[WDT] "
  46. #define WDTLOG(fmt, arg...) dprintf(INFO, WDTTAG fmt, ##arg)
  47. #define WDTCRI(fmt, arg...) dprintf(CRITICAL,WDTTAG fmt, ##arg)
  48. #define WDTMSG(fmt, arg...) dprintf(INFO, fmt, ##arg)
  49. #define WDTERR(fmt, arg...) dprintf(INFO, WDTTAG "%5d: "fmt, __LINE__, ##arg)
  50. #define TOPRGU_DTS_NAME "/toprgu@10007000"
  51. #define TOPRGU_DT_NODE_PROP_NAME "apwdt_en"
  52. #if ENABLE_WDT_MODULE
  53. static unsigned int timeout;
  54. static unsigned int is_rgu_trigger_rst;
  55. #define WDT_CLR_IRQ 0
  56. void mtk_wdt_disable(void)
  57. {
  58. u32 tmp;
  59. tmp = DRV_Reg32(MTK_WDT_MODE);
  60. tmp &= ~MTK_WDT_MODE_ENABLE; /* disable watchdog */
  61. tmp |= (MTK_WDT_MODE_KEY); /* need key then write is allowed */
  62. DRV_WriteReg32(MTK_WDT_MODE, tmp);
  63. }
  64. void mtk_wdt_doe_setup(void)
  65. {
  66. int apwdt_en = 1;
  67. int len = 0, offset = 0;
  68. unsigned int *data = NULL;
  69. void *wdt_fdt = get_lk_overlayed_dtb();
  70. offset = fdt_path_offset(wdt_fdt, TOPRGU_DTS_NAME);
  71. WDTLOG("[WDT] Found " TOPRGU_DTS_NAME " at offset %d\n", offset);
  72. if (offset < 0) {
  73. WDTERR("[WDT] Failed to find " TOPRGU_DTS_NAME " in dtb\n");
  74. apwdt_en = 1;
  75. } else {
  76. data = (unsigned int *)fdt_getprop(wdt_fdt, offset, TOPRGU_DT_NODE_PROP_NAME, &len);
  77. if (len <= 0 || !data) {
  78. WDTERR("[WDT] Fail to found property " TOPRGU_DT_NODE_PROP_NAME "\n");
  79. apwdt_en = 1;
  80. } else
  81. apwdt_en = fdt32_to_cpu(*(unsigned int *)data);
  82. }
  83. if (apwdt_en == 0) {
  84. /* disable wdt timeout */
  85. mtk_wdt_disable();
  86. /* disable all reset source's reset and irq mode */
  87. DRV_WriteReg32(MTK_WDT_REQ_MODE, MTK_WDT_REQ_MODE_KEY);
  88. DRV_WriteReg32(MTK_WDT_REQ_IRQ_EN, MTK_WDT_REQ_IRQ_KEY);
  89. WDTLOG("apwdt is disabled by doe\n");
  90. } else {
  91. WDTLOG("keep original wdt settings\n");
  92. }
  93. }
  94. static void mtk_wdt_clear_all(void)
  95. {
  96. #if WDT_CLR_IRQ
  97. DRV_WriteReg32(MTK_WDT_IRQ_CLR, MTK_WDT_IRQ_CLR_MASK |
  98. MTK_WDT_IRQ_CLR_KEY);
  99. #else
  100. return;
  101. #endif
  102. }
  103. static void mtk_wdt_reset(char bypass_power_key)
  104. {
  105. WDTCRI("%s\n", __func__);
  106. /* Watchdog Rest */
  107. unsigned int wdt_mode_val, nonrst2;
  108. mtk_wdt_clear_all();
  109. DRV_WriteReg32(MTK_WDT_RESTART, MTK_WDT_RESTART_KEY);
  110. /*set latch register to 0 before sw reset*/
  111. /* DRV_WriteReg32(MTK_WDT_LATCH_CTL, (MTK_WDT_LENGTH_CTL_KEY | 0x0)); */
  112. wdt_mode_val = DRV_Reg32(MTK_WDT_MODE);
  113. /*
  114. * MTK_WDT_MODE_AUTO_RESTART is replaced by MTK_WDT_NONRST2_BYPASS_PWR_KEY
  115. * of NONRST_REG2 for common kernel projects and two stage timeout design
  116. */
  117. nonrst2 = DRV_Reg32(MTK_WDT_NONRST_REG2);
  118. /* clear autorestart bit: autoretart: 1, bypass power key, 0: not bypass power key */
  119. nonrst2 &= ~MTK_WDT_NONRST2_BYPASS_PWR_KEY;
  120. /* make sure WDT mode is hw reboot mode, can not config isr mode */
  121. wdt_mode_val &= (~(MTK_WDT_MODE_IRQ | MTK_WDT_MODE_DUAL_MODE));
  122. wdt_mode_val = wdt_mode_val | MTK_WDT_MODE_KEY | MTK_WDT_MODE_EXTEN |
  123. MTK_WDT_MODE_IRQ_LEVEL_EN | MTK_WDT_MODE_EXTRA_CNT;
  124. /* bypass power key reboot. We using auto_restart bit as bypass power key flag */
  125. if (bypass_power_key)
  126. nonrst2 |= MTK_WDT_NONRST2_BYPASS_PWR_KEY;
  127. DRV_WriteReg32(MTK_WDT_MODE, wdt_mode_val);
  128. DRV_WriteReg32(MTK_WDT_NONRST_REG2, nonrst2);
  129. gpt_busy_wait_us(100);
  130. WDTCRI("%s: MODE: 0x%x\n", __func__, DRV_Reg32(MTK_WDT_MODE));
  131. WDTCRI("%s: SW reset happen!\n", __func__);
  132. WDTCRI("%s disable pwrap before wdt\n", __func__);
  133. pwrap_disable();
  134. DRV_WriteReg32(MTK_WDT_SWRST, MTK_WDT_SWRST_KEY);
  135. }
  136. unsigned int mtk_wdt_check_status(void)
  137. {
  138. unsigned int status;
  139. status = DRV_Reg32(MTK_WDT_STATUS);
  140. return status;
  141. }
  142. static void mtk_wdt_mode_config(BOOL dual_mode_en,
  143. BOOL irq,
  144. BOOL ext_en,
  145. BOOL ext_pol,
  146. BOOL wdt_en)
  147. {
  148. unsigned int tmp;
  149. mtk_wdt_clear_all();
  150. WDTLOG(" mtk_wdt_mode LK config mode value=%x\n", DRV_Reg32(MTK_WDT_MODE));
  151. tmp = DRV_Reg32(MTK_WDT_MODE);
  152. tmp |= MTK_WDT_MODE_KEY | MTK_WDT_MODE_IRQ_LEVEL_EN | MTK_WDT_MODE_EXTRA_CNT;
  153. /* Bit 0 : Whether enable watchdog or not */
  154. if (wdt_en == TRUE)
  155. tmp |= MTK_WDT_MODE_ENABLE;
  156. else
  157. tmp &= ~MTK_WDT_MODE_ENABLE;
  158. /* Bit 1 : Configure extern reset signal polarity. */
  159. if (ext_pol == TRUE)
  160. tmp |= MTK_WDT_MODE_EXT_POL;
  161. else
  162. tmp &= ~MTK_WDT_MODE_EXT_POL;
  163. /* Bit 2 : Whether enable external reset signal */
  164. if (ext_en == TRUE)
  165. tmp |= MTK_WDT_MODE_EXTEN;
  166. else
  167. tmp &= ~MTK_WDT_MODE_EXTEN;
  168. /* Bit 3 : Whether generating interrupt instead of reset signal */
  169. if (irq == TRUE)
  170. tmp |= MTK_WDT_MODE_IRQ;
  171. else
  172. tmp &= ~MTK_WDT_MODE_IRQ;
  173. /* Bit 6 : Whether enable debug module reset */
  174. if (dual_mode_en == TRUE)
  175. tmp |= MTK_WDT_MODE_DUAL_MODE;
  176. else
  177. tmp &= ~MTK_WDT_MODE_DUAL_MODE;
  178. DRV_WriteReg32(MTK_WDT_MODE, tmp);
  179. /*
  180. * MTK_WDT_MODE_AUTO_RESTART is replaced by MTK_WDT_NONRST2_BYPASS_PWR_KEY
  181. * of NONRST_REG2 for common kernel projects and two stage timeout design
  182. */
  183. DRV_WriteReg32(MTK_WDT_NONRST_REG2, DRV_Reg32(MTK_WDT_NONRST_REG2) |
  184. MTK_WDT_NONRST2_BYPASS_PWR_KEY);
  185. /* dual_mode(1); //always dual mode */
  186. /* mdelay(100); */
  187. WDTLOG(" mtk_wdt_mode_config LK mode value=%x, tmp:%x\n", DRV_Reg32(MTK_WDT_MODE), tmp);
  188. }
  189. #if 0
  190. static void mtk_wdt_mode_config(BOOL debug_en,
  191. BOOL irq,
  192. BOOL ext_en,
  193. BOOL ext_pol,
  194. BOOL wdt_en)
  195. {
  196. unsigned short tmp;
  197. tmp = DRV_Reg32(MTK_WDT_MODE);
  198. tmp |= MTK_WDT_MODE_KEY;
  199. /* Bit 0 : Whether enable watchdog or not */
  200. if (wdt_en == TRUE)
  201. tmp |= MTK_WDT_MODE_ENABLE;
  202. else
  203. tmp &= ~MTK_WDT_MODE_ENABLE;
  204. /* Bit 1 : Configure extern reset signal polarity. */
  205. if (ext_pol == TRUE)
  206. tmp |= MTK_WDT_MODE_EXT_POL;
  207. else
  208. tmp &= ~MTK_WDT_MODE_EXT_POL;
  209. /* Bit 2 : Whether enable external reset signal */
  210. if (ext_en == TRUE)
  211. tmp |= MTK_WDT_MODE_EXTEN;
  212. else
  213. tmp &= ~MTK_WDT_MODE_EXTEN;
  214. /* Bit 3 : Whether generating interrupt instead of reset signal */
  215. if (irq == TRUE)
  216. tmp |= MTK_WDT_MODE_IRQ;
  217. else
  218. tmp &= ~MTK_WDT_MODE_IRQ;
  219. /* Bit 6 : Whether enable debug module reset */
  220. if (debug_en == TRUE)
  221. tmp |= MTK_WDT_MODE_DEBUG_EN;
  222. else
  223. tmp &= ~MTK_WDT_MODE_DEBUG_EN;
  224. DRV_WriteReg32(MTK_WDT_MODE, tmp);
  225. }
  226. #endif
  227. void mtk_wdt_set_time_out_value(UINT32 value)
  228. {
  229. /*
  230. * TimeOut = BitField 15:5
  231. * Key = BitField 4:0 = 0x08
  232. */
  233. /* sec * 32768 / 512 = sec * 64 = sec * 1 << 6 */
  234. timeout = (unsigned int)(value * (1 << 6));
  235. timeout = timeout << 5;
  236. DRV_WriteReg32(MTK_WDT_LENGTH, (timeout | MTK_WDT_LENGTH_KEY));
  237. }
  238. void mtk_wdt_restart(void)
  239. {
  240. /* Reset WatchDogTimer's counting value to time out value */
  241. /* ie., keepalive() */
  242. DRV_WriteReg32(MTK_WDT_RESTART, MTK_WDT_RESTART_KEY);
  243. }
  244. static void mtk_wdt_sw_reset(void)
  245. {
  246. WDTLOG("WDT SW RESET\n");
  247. /* DRV_WriteReg32 (0x70025000, 0x2201); */
  248. /* DRV_WriteReg32 (0x70025008, 0x1971); */
  249. /* DRV_WriteReg32 (0x7002501C, 0x1209); */
  250. mtk_wdt_reset(1);/* NOTE here, this reset will cause by pass power key */
  251. /* system will reset */
  252. while (1) {
  253. WDTLOG("SW reset fail ...\n");
  254. };
  255. }
  256. static void mtk_wdt_hw_reset(void)
  257. {
  258. WDTLOG("WDT_HW_Reset\n");
  259. /* 1. set WDT timeout 1 secs, 1*64*512/32768 = 1sec */
  260. mtk_wdt_set_time_out_value(1);
  261. /* 2. enable WDT debug reset enable, generating irq disable, ext reset disable */
  262. /* ext reset signal low, wdt enalbe */
  263. mtk_wdt_mode_config(TRUE, FALSE, FALSE, FALSE, TRUE);
  264. /* 3. reset the watch dog timer to the value set in WDT_LENGTH register */
  265. mtk_wdt_restart();
  266. /* 4. system will reset */
  267. while (1);
  268. }
  269. const char *mtk_wdt_get_last_stage(void)
  270. {
  271. unsigned int reg;
  272. unsigned int last_stage;
  273. /* check reboot source */
  274. reg = DRV_Reg32(MTK_WDT_NONRST_REG2);
  275. last_stage = (reg >> MTK_WDT_NONRST2_LAST_STAGE_OFS) & RGU_STAGE_MASK;
  276. if (last_stage == RGU_STAGE_PRELOADER)
  277. return "rst from: pl";
  278. else if (last_stage == RGU_STAGE_LK)
  279. return "rst from: lk";
  280. else if (last_stage == RGU_STAGE_KERNEL)
  281. return "rst from: kernel";
  282. else if (last_stage == RGU_STAGE_DA)
  283. return "rst from: DA";
  284. return "rst from: unknown";
  285. }
  286. static void mtk_wdt_mark_stage(unsigned int stage)
  287. {
  288. unsigned int reg = DRV_Reg32(MTK_WDT_NONRST_REG2);
  289. reg = (reg & ~(RGU_STAGE_MASK << MTK_WDT_NONRST2_STAGE_OFS))
  290. | (stage << MTK_WDT_NONRST2_STAGE_OFS);
  291. DRV_WriteReg32(MTK_WDT_NONRST_REG2, reg);
  292. }
  293. /**
  294. * For Power off and power on reset, the INTERVAL default value is 0x7FF.
  295. * We set Interval[1:0] to different value to distinguish different stage.
  296. * Enter pre-loader, we will set it to 0x0
  297. * Enter u-boot, we will set it to 0x1
  298. * Enter kernel, we will set it to 0x2
  299. * And the default value is 0x3 which means reset from a power off and power on reset
  300. */
  301. #define POWER_OFF_ON_MAGIC (0x3)
  302. #define PRE_LOADER_MAGIC (0x0)
  303. #define U_BOOT_MAGIC (0x1)
  304. #define KERNEL_MAGIC (0x2)
  305. #define MAGIC_NUM_MASK (0x3)
  306. /**
  307. * If the reset is trigger by RGU(Time out or SW trigger), we hope the system can boot up directly;
  308. * we DO NOT hope we must press power key to reboot system after reset.
  309. * This message should tell pre-loader and u-boot, and we use Interval[2] to store this information.
  310. * And this information will be cleared when enter kernel.
  311. */
  312. #define IS_POWER_ON_RESET (0x1<<2)
  313. #define RGU_TRIGGER_RESET_MASK (0x1<<2)
  314. void mtk_wdt_init(void)
  315. {
  316. unsigned int tmp;
  317. unsigned int interval_val = DRV_Reg32(MTK_WDT_INTERVAL);
  318. /* mark stage */
  319. mtk_wdt_mark_stage(RGU_STAGE_LK);
  320. mtk_wdt_mode_config(FALSE, FALSE, FALSE, FALSE, FALSE);
  321. WDTLOG("wdt init\n");
  322. /* Update interval register value and check reboot flag */
  323. if ((interval_val & RGU_TRIGGER_RESET_MASK) == IS_POWER_ON_RESET)
  324. is_rgu_trigger_rst = 0; /* Power off and power on reset */
  325. else
  326. is_rgu_trigger_rst = 1; /* RGU trigger reset */
  327. interval_val &= ~(RGU_TRIGGER_RESET_MASK|MAGIC_NUM_MASK);
  328. interval_val |= (U_BOOT_MAGIC|IS_POWER_ON_RESET);
  329. /* Write back INTERVAL REG */
  330. DRV_WriteReg32(MTK_WDT_INTERVAL, interval_val);
  331. /* Setting timeout 10s */
  332. mtk_wdt_set_time_out_value(10);
  333. /*set SPM_SCPSYS_rst to be enable, thermal_ctl_rst to be disable*/
  334. tmp = DRV_Reg32(MTK_WDT_REQ_MODE);
  335. tmp |= MTK_WDT_REQ_MODE_KEY;
  336. tmp |= MTK_WDT_REQ_MODE_SPM_SCPSYS;
  337. tmp &= (~MTK_WDT_REQ_MODE_THERMAL);
  338. DRV_WriteReg32(MTK_WDT_REQ_MODE, tmp);
  339. /*set thermal_ctl_rst & SPM_SCPSYS_rst to be reset mode*/
  340. tmp = DRV_Reg32(MTK_WDT_REQ_IRQ_EN);
  341. tmp |= MTK_WDT_REQ_IRQ_KEY;
  342. tmp &= ~(MTK_WDT_REQ_IRQ_THERMAL_EN | MTK_WDT_REQ_IRQ_SPM_SCPSYS_EN);
  343. DRV_WriteReg32(MTK_WDT_REQ_IRQ_EN, tmp);
  344. #ifdef WDT_ENABLED
  345. mtk_wdt_mode_config(TRUE, TRUE, TRUE, FALSE, TRUE);
  346. mtk_wdt_restart();
  347. #endif
  348. #if 0
  349. int i = 0;
  350. /* lk wdt test */
  351. while (1) {
  352. i++;
  353. mdelay(1000);
  354. WDTLOG("wdt test %d\n", i);
  355. /* Dump RGU regisers */
  356. WDTLOG("==== fwq Dump RGU Reg ========\n");
  357. WDTLOG("RGU MODE: %x\n", DRV_Reg32(MTK_WDT_MODE));
  358. WDTLOG("RGU LENGTH: %x\n", DRV_Reg32(MTK_WDT_LENGTH));
  359. WDTLOG("RGU STA: %x\n", DRV_Reg32(MTK_WDT_STATUS));
  360. WDTLOG("RGU INTERVAL: %x\n", DRV_Reg32(MTK_WDT_INTERVAL));
  361. WDTLOG("RGU SWSYSRST: %x\n", DRV_Reg32(MTK_WDT_SWSYSRST));
  362. WDTLOG("==== Dump RGU Reg End ====\n");
  363. if (i < 60) {
  364. WDTLOG("kick lk ext\n");
  365. mtk_wdt_restart();
  366. }
  367. }
  368. #endif
  369. }
  370. BOOL mtk_is_rgu_trigger_reset(void)
  371. {
  372. if (is_rgu_trigger_rst)
  373. return TRUE;
  374. return FALSE;
  375. }
  376. extern BOOT_ARGUMENT *g_boot_arg;
  377. int mtk_wdt_boot_check(void)
  378. {
  379. int boot_reason;
  380. if (g_boot_arg->maggic_number == BOOT_ARGUMENT_MAGIC) {
  381. boot_reason = g_boot_arg->boot_reason;
  382. WDTLOG("WDT get boot reason is %d from pre-loader\n", boot_reason);
  383. if (boot_reason == BR_WDT) {
  384. return WDT_NORMAL_REBOOT;
  385. } else if (boot_reason == BR_WDT_BY_PASS_PWK || BR_KERNEL_PANIC == boot_reason || BR_WDT_SW == boot_reason || BR_WDT_HW == boot_reason) {
  386. return WDT_BY_PASS_PWK_REBOOT;
  387. } else {
  388. return WDT_NOT_WDT_REBOOT;
  389. }
  390. }
  391. return WDT_NOT_WDT_REBOOT;
  392. }
  393. void mtk_arch_reset(char mode)
  394. {
  395. WDTLOG("mtk_arch_reset\n");
  396. mtk_wdt_reset(mode);
  397. while (1);
  398. }
  399. void mtk_arch_full_reset(void)
  400. {
  401. #ifdef MTK_PMIC_FULL_RESET
  402. /* save pl lk log to expdb before pmic full reset*/
  403. save_pllk_log();
  404. WDTCRI("mtk_arch_full_reset\n");
  405. /* PMIC full reset will happen (reset immediately) inside. */
  406. pmic_cold_reset();
  407. while (1);
  408. #else
  409. WDTCRI("mtk_arch_full_reset: PMIC full reset is not supported.\n");
  410. #endif
  411. }
  412. void wdt_check_exception(void)
  413. {
  414. unsigned int reg = DRV_Reg32(MTK_WDT_NONRST_REG);
  415. DRV_WriteReg32(MTK_WDT_NONRST_REG, 0);
  416. if (((reg & (~MTK_WDT_STATUS_SWWDT_RST)) || DRV_Reg32(MTK_WDT_STATUS)) && (g_boot_mode != FASTBOOT))
  417. mtk_arch_full_reset();
  418. }
  419. void rgu_swsys_reset(WD_SYS_RST_TYPE reset_type)
  420. {
  421. if (reset_type == WD_MD_RST) {
  422. unsigned int wdt_dbg_ctrl;
  423. wdt_dbg_ctrl = DRV_Reg32(MTK_WDT_SWSYSRST);
  424. wdt_dbg_ctrl |= MTK_WDT_SWSYS_RST_KEY;
  425. wdt_dbg_ctrl |= 0x80;/* 1<<7 */
  426. DRV_WriteReg32(MTK_WDT_SWSYSRST, wdt_dbg_ctrl);
  427. udelay(1000);
  428. wdt_dbg_ctrl = DRV_Reg32(MTK_WDT_SWSYSRST);
  429. wdt_dbg_ctrl |= MTK_WDT_SWSYS_RST_KEY;
  430. wdt_dbg_ctrl &= (~0x80);/* ~(1<<7) */
  431. DRV_WriteReg32(MTK_WDT_SWSYSRST, wdt_dbg_ctrl);
  432. dprintf(CRITICAL, "fwq rgu lk md reset\n");
  433. }
  434. }
  435. void rgu_release_rg_mcu_pwr_on(void)
  436. {
  437. unsigned int wdt_dbg_ctrl;
  438. wdt_dbg_ctrl = DRV_Reg32(MTK_WDT_DEBUG_CTL);
  439. wdt_dbg_ctrl &= (~MTK_RG_MCU_PWR_ON);
  440. wdt_dbg_ctrl |= MTK_DEBUG_CTL_KEY;
  441. DRV_WriteReg32(MTK_WDT_DEBUG_CTL, wdt_dbg_ctrl);
  442. WDTLOG("RGU %s:MTK_WDT_DEBUG_CTL(%x)\n", __func__, wdt_dbg_ctrl);
  443. }
  444. void rgu_release_rg_mcu_pwr_iso_dis(void)
  445. {
  446. unsigned int wdt_dbg_ctrl;
  447. wdt_dbg_ctrl = DRV_Reg32(MTK_WDT_DEBUG_CTL);
  448. wdt_dbg_ctrl &= (~MTK_RG_MCU_PWR_ISO_DIS);
  449. wdt_dbg_ctrl |= MTK_DEBUG_CTL_KEY;
  450. DRV_WriteReg32(MTK_WDT_DEBUG_CTL, wdt_dbg_ctrl);
  451. WDTLOG("RGU %s:MTK_WDT_DEBUG_CTL(%x)\n", __func__, wdt_dbg_ctrl);
  452. }
  453. #else
  454. void mtk_wdt_init(void)
  455. {
  456. WDTLOG("WDT Dummy init called\n");
  457. }
  458. BOOL mtk_is_rgu_trigger_reset(void)
  459. {
  460. WDTLOG("Dummy mtk_is_rgu_trigger_reset called\n");
  461. return FALSE;
  462. }
  463. void mtk_arch_reset(char mode)
  464. {
  465. WDTLOG("WDT Dummy arch reset called\n");
  466. }
  467. void mtk_arch_full_reset(void)
  468. {
  469. WDTLOG("WDT Dummy arch full reset called\n");
  470. }
  471. void wdt_check_exception(void)
  472. {
  473. WDTLOG("WDT Dummy check exception called\n");
  474. }
  475. int mtk_wdt_boot_check(void)
  476. {
  477. WDTLOG("WDT Dummy mtk_wdt_boot_check called\n");
  478. return WDT_NOT_WDT_REBOOT;
  479. }
  480. void mtk_wdt_disable(void)
  481. {
  482. WDTLOG("WDT Dummy mtk_wdt_disable called\n");
  483. }
  484. const char *mtk_wdt_get_last_stage(void)
  485. {
  486. return "rst from: not supported";
  487. }
  488. void mtk_wdt_restart(void)
  489. {
  490. WDTLOG("WDT Dummy mtk_wdt_restart called\n");
  491. }
  492. static void mtk_wdt_sw_reset(void)
  493. {
  494. WDTLOG("WDT Dummy mtk_wdt_sw_reset called\n");
  495. }
  496. static void mtk_wdt_hw_reset(void)
  497. {
  498. WDTLOG("WDT Dummy mtk_wdt_hw_reset called\n");
  499. }
  500. void rgu_swsys_reset(WD_SYS_RST_TYPE reset_type)
  501. {
  502. WDTLOG("WDT Dummy rgu_swsys_reset called\n");
  503. }
  504. void rgu_release_rg_mcu_pwr_on(void)
  505. {
  506. WDTLOG("WDT Dummy %s called\n", __func__);
  507. }
  508. void rgu_release_rg_mcu_pwr_iso_dis(void)
  509. {
  510. WDTLOG("WDT Dummy %s called\n", __func__);
  511. }
  512. #endif