common.c 9.8 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * K3: Common Architecture initialization
  4. *
  5. * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
  6. * Lokesh Vutla <lokeshvutla@ti.com>
  7. */
  8. #include <common.h>
  9. #include <cpu_func.h>
  10. #include <spl.h>
  11. #include "common.h"
  12. #include <dm.h>
  13. #include <remoteproc.h>
  14. #include <linux/soc/ti/ti_sci_protocol.h>
  15. #include <fdt_support.h>
  16. #include <asm/arch/sys_proto.h>
  17. #include <asm/hardware.h>
  18. #include <asm/io.h>
  19. #include <fs_loader.h>
  20. #include <fs.h>
  21. #include <env.h>
  22. #include <elf.h>
  23. struct ti_sci_handle *get_ti_sci_handle(void)
  24. {
  25. struct udevice *dev;
  26. int ret;
  27. ret = uclass_get_device_by_driver(UCLASS_FIRMWARE,
  28. DM_GET_DRIVER(ti_sci), &dev);
  29. if (ret)
  30. panic("Failed to get SYSFW (%d)\n", ret);
  31. return (struct ti_sci_handle *)ti_sci_get_handle_from_sysfw(dev);
  32. }
  33. void k3_sysfw_print_ver(void)
  34. {
  35. struct ti_sci_handle *ti_sci = get_ti_sci_handle();
  36. char fw_desc[sizeof(ti_sci->version.firmware_description) + 1];
  37. /*
  38. * Output System Firmware version info. Note that since the
  39. * 'firmware_description' field is not guaranteed to be zero-
  40. * terminated we manually add a \0 terminator if needed. Further
  41. * note that we intentionally no longer rely on the extended
  42. * printf() formatter '%.*s' to not having to require a more
  43. * full-featured printf() implementation.
  44. */
  45. strncpy(fw_desc, ti_sci->version.firmware_description,
  46. sizeof(ti_sci->version.firmware_description));
  47. fw_desc[sizeof(fw_desc) - 1] = '\0';
  48. printf("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n",
  49. ti_sci->version.abi_major, ti_sci->version.abi_minor,
  50. ti_sci->version.firmware_revision, fw_desc);
  51. }
  52. DECLARE_GLOBAL_DATA_PTR;
  53. #ifdef CONFIG_K3_EARLY_CONS
  54. int early_console_init(void)
  55. {
  56. struct udevice *dev;
  57. int ret;
  58. gd->baudrate = CONFIG_BAUDRATE;
  59. ret = uclass_get_device_by_seq(UCLASS_SERIAL, CONFIG_K3_EARLY_CONS_IDX,
  60. &dev);
  61. if (ret) {
  62. printf("Error getting serial dev for early console! (%d)\n",
  63. ret);
  64. return ret;
  65. }
  66. gd->cur_serial_dev = dev;
  67. gd->flags |= GD_FLG_SERIAL_READY;
  68. gd->have_console = 1;
  69. return 0;
  70. }
  71. #endif
  72. #ifdef CONFIG_SYS_K3_SPL_ATF
  73. void init_env(void)
  74. {
  75. #ifdef CONFIG_SPL_ENV_SUPPORT
  76. char *part;
  77. env_init();
  78. env_relocate();
  79. switch (spl_boot_device()) {
  80. case BOOT_DEVICE_MMC2:
  81. part = env_get("bootpart");
  82. env_set("storage_interface", "mmc");
  83. env_set("fw_dev_part", part);
  84. break;
  85. case BOOT_DEVICE_SPI:
  86. env_set("storage_interface", "ubi");
  87. env_set("fw_ubi_mtdpart", "UBI");
  88. env_set("fw_ubi_volume", "UBI0");
  89. break;
  90. default:
  91. printf("%s from device %u not supported!\n",
  92. __func__, spl_boot_device());
  93. return;
  94. }
  95. #endif
  96. }
  97. #ifdef CONFIG_FS_LOADER
  98. int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr)
  99. {
  100. struct udevice *fsdev;
  101. char *name = NULL;
  102. int size = 0;
  103. *loadaddr = 0;
  104. #ifdef CONFIG_SPL_ENV_SUPPORT
  105. switch (spl_boot_device()) {
  106. case BOOT_DEVICE_MMC2:
  107. name = env_get(name_fw);
  108. *loadaddr = env_get_hex(name_loadaddr, *loadaddr);
  109. break;
  110. default:
  111. printf("Loading rproc fw image from device %u not supported!\n",
  112. spl_boot_device());
  113. return 0;
  114. }
  115. #endif
  116. if (!*loadaddr)
  117. return 0;
  118. if (!uclass_get_device(UCLASS_FS_FIRMWARE_LOADER, 0, &fsdev)) {
  119. size = request_firmware_into_buf(fsdev, name, (void *)*loadaddr,
  120. 0, 0);
  121. }
  122. return size;
  123. }
  124. #else
  125. int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr)
  126. {
  127. return 0;
  128. }
  129. #endif
  130. __weak void start_non_linux_remote_cores(void)
  131. {
  132. }
  133. void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
  134. {
  135. typedef void __noreturn (*image_entry_noargs_t)(void);
  136. struct ti_sci_handle *ti_sci = get_ti_sci_handle();
  137. u32 loadaddr = 0;
  138. int ret, size;
  139. /* Release all the exclusive devices held by SPL before starting ATF */
  140. ti_sci->ops.dev_ops.release_exclusive_devices(ti_sci);
  141. ret = rproc_init();
  142. if (ret)
  143. panic("rproc failed to be initialized (%d)\n", ret);
  144. init_env();
  145. start_non_linux_remote_cores();
  146. size = load_firmware("name_mcur5f0_0fw", "addr_mcur5f0_0load",
  147. &loadaddr);
  148. /*
  149. * It is assumed that remoteproc device 1 is the corresponding
  150. * Cortex-A core which runs ATF. Make sure DT reflects the same.
  151. */
  152. ret = rproc_load(1, spl_image->entry_point, 0x200);
  153. if (ret)
  154. panic("%s: ATF failed to load on rproc (%d)\n", __func__, ret);
  155. /* Add an extra newline to differentiate the ATF logs from SPL */
  156. printf("Starting ATF on ARM64 core...\n\n");
  157. ret = rproc_start(1);
  158. if (ret)
  159. panic("%s: ATF failed to start on rproc (%d)\n", __func__, ret);
  160. if (!(size > 0 && valid_elf_image(loadaddr))) {
  161. debug("Shutting down...\n");
  162. release_resources_for_core_shutdown();
  163. while (1)
  164. asm volatile("wfe");
  165. }
  166. image_entry_noargs_t image_entry =
  167. (image_entry_noargs_t)load_elf_image_phdr(loadaddr);
  168. image_entry();
  169. }
  170. #endif
  171. #if defined(CONFIG_OF_LIBFDT)
  172. int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name)
  173. {
  174. u64 msmc_start = 0, msmc_end = 0, msmc_size, reg[2];
  175. struct ti_sci_handle *ti_sci = get_ti_sci_handle();
  176. int ret, node, subnode, len, prev_node;
  177. u32 range[4], addr, size;
  178. const fdt32_t *sub_reg;
  179. ti_sci->ops.core_ops.query_msmc(ti_sci, &msmc_start, &msmc_end);
  180. msmc_size = msmc_end - msmc_start + 1;
  181. debug("%s: msmc_start = 0x%llx, msmc_size = 0x%llx\n", __func__,
  182. msmc_start, msmc_size);
  183. /* find or create "msmc_sram node */
  184. ret = fdt_path_offset(blob, parent_path);
  185. if (ret < 0)
  186. return ret;
  187. node = fdt_find_or_add_subnode(blob, ret, node_name);
  188. if (node < 0)
  189. return node;
  190. ret = fdt_setprop_string(blob, node, "compatible", "mmio-sram");
  191. if (ret < 0)
  192. return ret;
  193. reg[0] = cpu_to_fdt64(msmc_start);
  194. reg[1] = cpu_to_fdt64(msmc_size);
  195. ret = fdt_setprop(blob, node, "reg", reg, sizeof(reg));
  196. if (ret < 0)
  197. return ret;
  198. fdt_setprop_cell(blob, node, "#address-cells", 1);
  199. fdt_setprop_cell(blob, node, "#size-cells", 1);
  200. range[0] = 0;
  201. range[1] = cpu_to_fdt32(msmc_start >> 32);
  202. range[2] = cpu_to_fdt32(msmc_start & 0xffffffff);
  203. range[3] = cpu_to_fdt32(msmc_size);
  204. ret = fdt_setprop(blob, node, "ranges", range, sizeof(range));
  205. if (ret < 0)
  206. return ret;
  207. subnode = fdt_first_subnode(blob, node);
  208. prev_node = 0;
  209. /* Look for invalid subnodes and delete them */
  210. while (subnode >= 0) {
  211. sub_reg = fdt_getprop(blob, subnode, "reg", &len);
  212. addr = fdt_read_number(sub_reg, 1);
  213. sub_reg++;
  214. size = fdt_read_number(sub_reg, 1);
  215. debug("%s: subnode = %d, addr = 0x%x. size = 0x%x\n", __func__,
  216. subnode, addr, size);
  217. if (addr + size > msmc_size ||
  218. !strncmp(fdt_get_name(blob, subnode, &len), "sysfw", 5) ||
  219. !strncmp(fdt_get_name(blob, subnode, &len), "l3cache", 7)) {
  220. fdt_del_node(blob, subnode);
  221. debug("%s: deleting subnode %d\n", __func__, subnode);
  222. if (!prev_node)
  223. subnode = fdt_first_subnode(blob, node);
  224. else
  225. subnode = fdt_next_subnode(blob, prev_node);
  226. } else {
  227. prev_node = subnode;
  228. subnode = fdt_next_subnode(blob, prev_node);
  229. }
  230. }
  231. return 0;
  232. }
  233. int fdt_disable_node(void *blob, char *node_path)
  234. {
  235. int offs;
  236. int ret;
  237. offs = fdt_path_offset(blob, node_path);
  238. if (offs < 0) {
  239. printf("Node %s not found.\n", node_path);
  240. return offs;
  241. }
  242. ret = fdt_setprop_string(blob, offs, "status", "disabled");
  243. if (ret < 0) {
  244. printf("Could not add status property to node %s: %s\n",
  245. node_path, fdt_strerror(ret));
  246. return ret;
  247. }
  248. return 0;
  249. }
  250. #endif
  251. #ifndef CONFIG_SYSRESET
  252. void reset_cpu(ulong ignored)
  253. {
  254. }
  255. #endif
  256. #if defined(CONFIG_DISPLAY_CPUINFO)
  257. int print_cpuinfo(void)
  258. {
  259. u32 soc, rev;
  260. char *name;
  261. soc = (readl(CTRLMMR_WKUP_JTAG_DEVICE_ID) &
  262. DEVICE_ID_FAMILY_MASK) >> DEVICE_ID_FAMILY_SHIFT;
  263. rev = (readl(CTRLMMR_WKUP_JTAG_ID) &
  264. JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT;
  265. printf("SoC: ");
  266. switch (soc) {
  267. case AM654:
  268. name = "AM654";
  269. break;
  270. case J721E:
  271. name = "J721E";
  272. break;
  273. default:
  274. name = "Unknown Silicon";
  275. };
  276. printf("%s SR ", name);
  277. switch (rev) {
  278. case REV_PG1_0:
  279. name = "1.0";
  280. break;
  281. case REV_PG2_0:
  282. name = "2.0";
  283. break;
  284. default:
  285. name = "Unknown Revision";
  286. };
  287. printf("%s\n", name);
  288. return 0;
  289. }
  290. #endif
  291. #ifdef CONFIG_ARM64
  292. void board_prep_linux(bootm_headers_t *images)
  293. {
  294. debug("Linux kernel Image start = 0x%lx end = 0x%lx\n",
  295. images->os.start, images->os.end);
  296. __asm_flush_dcache_range(images->os.start,
  297. ROUND(images->os.end,
  298. CONFIG_SYS_CACHELINE_SIZE));
  299. }
  300. #endif
  301. #ifdef CONFIG_CPU_V7R
  302. void disable_linefill_optimization(void)
  303. {
  304. u32 actlr;
  305. /*
  306. * On K3 devices there are 2 conditions where R5F can deadlock:
  307. * 1.When software is performing series of store operations to
  308. * cacheable write back/write allocate memory region and later
  309. * on software execute barrier operation (DSB or DMB). R5F may
  310. * hang at the barrier instruction.
  311. * 2.When software is performing a mix of load and store operations
  312. * within a tight loop and store operations are all writing to
  313. * cacheable write back/write allocates memory regions, R5F may
  314. * hang at one of the load instruction.
  315. *
  316. * To avoid the above two conditions disable linefill optimization
  317. * inside Cortex R5F.
  318. */
  319. asm("mrc p15, 0, %0, c1, c0, 1" : "=r" (actlr));
  320. actlr |= (1 << 13); /* Set DLFO bit */
  321. asm("mcr p15, 0, %0, c1, c0, 1" : : "r" (actlr));
  322. }
  323. #endif
  324. void remove_fwl_configs(struct fwl_data *fwl_data, size_t fwl_data_size)
  325. {
  326. struct ti_sci_msg_fwl_region region;
  327. struct ti_sci_fwl_ops *fwl_ops;
  328. struct ti_sci_handle *ti_sci;
  329. size_t i, j;
  330. ti_sci = get_ti_sci_handle();
  331. fwl_ops = &ti_sci->ops.fwl_ops;
  332. for (i = 0; i < fwl_data_size; i++) {
  333. for (j = 0; j < fwl_data[i].regions; j++) {
  334. region.fwl_id = fwl_data[i].fwl_id;
  335. region.region = j;
  336. region.n_permission_regs = 3;
  337. fwl_ops->get_fwl_region(ti_sci, &region);
  338. if (region.control != 0) {
  339. pr_debug("Attempting to disable firewall %5d (%25s)\n",
  340. region.fwl_id, fwl_data[i].name);
  341. region.control = 0;
  342. if (fwl_ops->set_fwl_region(ti_sci, &region))
  343. pr_err("Could not disable firewall %5d (%25s)\n",
  344. region.fwl_id, fwl_data[i].name);
  345. }
  346. }
  347. }
  348. }