common.c 9.9 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 <image.h>
  11. #include <init.h>
  12. #include <spl.h>
  13. #include "common.h"
  14. #include <dm.h>
  15. #include <remoteproc.h>
  16. #include <asm/cache.h>
  17. #include <linux/soc/ti/ti_sci_protocol.h>
  18. #include <fdt_support.h>
  19. #include <asm/arch/sys_proto.h>
  20. #include <asm/hardware.h>
  21. #include <asm/io.h>
  22. #include <fs_loader.h>
  23. #include <fs.h>
  24. #include <env.h>
  25. #include <elf.h>
  26. struct ti_sci_handle *get_ti_sci_handle(void)
  27. {
  28. struct udevice *dev;
  29. int ret;
  30. ret = uclass_get_device_by_driver(UCLASS_FIRMWARE,
  31. DM_GET_DRIVER(ti_sci), &dev);
  32. if (ret)
  33. panic("Failed to get SYSFW (%d)\n", ret);
  34. return (struct ti_sci_handle *)ti_sci_get_handle_from_sysfw(dev);
  35. }
  36. void k3_sysfw_print_ver(void)
  37. {
  38. struct ti_sci_handle *ti_sci = get_ti_sci_handle();
  39. char fw_desc[sizeof(ti_sci->version.firmware_description) + 1];
  40. /*
  41. * Output System Firmware version info. Note that since the
  42. * 'firmware_description' field is not guaranteed to be zero-
  43. * terminated we manually add a \0 terminator if needed. Further
  44. * note that we intentionally no longer rely on the extended
  45. * printf() formatter '%.*s' to not having to require a more
  46. * full-featured printf() implementation.
  47. */
  48. strncpy(fw_desc, ti_sci->version.firmware_description,
  49. sizeof(ti_sci->version.firmware_description));
  50. fw_desc[sizeof(fw_desc) - 1] = '\0';
  51. printf("SYSFW ABI: %d.%d (firmware rev 0x%04x '%s')\n",
  52. ti_sci->version.abi_major, ti_sci->version.abi_minor,
  53. ti_sci->version.firmware_revision, fw_desc);
  54. }
  55. DECLARE_GLOBAL_DATA_PTR;
  56. #ifdef CONFIG_K3_EARLY_CONS
  57. int early_console_init(void)
  58. {
  59. struct udevice *dev;
  60. int ret;
  61. gd->baudrate = CONFIG_BAUDRATE;
  62. ret = uclass_get_device_by_seq(UCLASS_SERIAL, CONFIG_K3_EARLY_CONS_IDX,
  63. &dev);
  64. if (ret) {
  65. printf("Error getting serial dev for early console! (%d)\n",
  66. ret);
  67. return ret;
  68. }
  69. gd->cur_serial_dev = dev;
  70. gd->flags |= GD_FLG_SERIAL_READY;
  71. gd->have_console = 1;
  72. return 0;
  73. }
  74. #endif
  75. #ifdef CONFIG_SYS_K3_SPL_ATF
  76. void init_env(void)
  77. {
  78. #ifdef CONFIG_SPL_ENV_SUPPORT
  79. char *part;
  80. env_init();
  81. env_relocate();
  82. switch (spl_boot_device()) {
  83. case BOOT_DEVICE_MMC2:
  84. part = env_get("bootpart");
  85. env_set("storage_interface", "mmc");
  86. env_set("fw_dev_part", part);
  87. break;
  88. case BOOT_DEVICE_SPI:
  89. env_set("storage_interface", "ubi");
  90. env_set("fw_ubi_mtdpart", "UBI");
  91. env_set("fw_ubi_volume", "UBI0");
  92. break;
  93. default:
  94. printf("%s from device %u not supported!\n",
  95. __func__, spl_boot_device());
  96. return;
  97. }
  98. #endif
  99. }
  100. #ifdef CONFIG_FS_LOADER
  101. int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr)
  102. {
  103. struct udevice *fsdev;
  104. char *name = NULL;
  105. int size = 0;
  106. *loadaddr = 0;
  107. #ifdef CONFIG_SPL_ENV_SUPPORT
  108. switch (spl_boot_device()) {
  109. case BOOT_DEVICE_MMC2:
  110. name = env_get(name_fw);
  111. *loadaddr = env_get_hex(name_loadaddr, *loadaddr);
  112. break;
  113. default:
  114. printf("Loading rproc fw image from device %u not supported!\n",
  115. spl_boot_device());
  116. return 0;
  117. }
  118. #endif
  119. if (!*loadaddr)
  120. return 0;
  121. if (!uclass_get_device(UCLASS_FS_FIRMWARE_LOADER, 0, &fsdev)) {
  122. size = request_firmware_into_buf(fsdev, name, (void *)*loadaddr,
  123. 0, 0);
  124. }
  125. return size;
  126. }
  127. #else
  128. int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr)
  129. {
  130. return 0;
  131. }
  132. #endif
  133. __weak void start_non_linux_remote_cores(void)
  134. {
  135. }
  136. void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
  137. {
  138. typedef void __noreturn (*image_entry_noargs_t)(void);
  139. struct ti_sci_handle *ti_sci = get_ti_sci_handle();
  140. u32 loadaddr = 0;
  141. int ret, size;
  142. /* Release all the exclusive devices held by SPL before starting ATF */
  143. ti_sci->ops.dev_ops.release_exclusive_devices(ti_sci);
  144. ret = rproc_init();
  145. if (ret)
  146. panic("rproc failed to be initialized (%d)\n", ret);
  147. init_env();
  148. start_non_linux_remote_cores();
  149. size = load_firmware("name_mcur5f0_0fw", "addr_mcur5f0_0load",
  150. &loadaddr);
  151. /*
  152. * It is assumed that remoteproc device 1 is the corresponding
  153. * Cortex-A core which runs ATF. Make sure DT reflects the same.
  154. */
  155. ret = rproc_load(1, spl_image->entry_point, 0x200);
  156. if (ret)
  157. panic("%s: ATF failed to load on rproc (%d)\n", __func__, ret);
  158. /* Add an extra newline to differentiate the ATF logs from SPL */
  159. printf("Starting ATF on ARM64 core...\n\n");
  160. ret = rproc_start(1);
  161. if (ret)
  162. panic("%s: ATF failed to start on rproc (%d)\n", __func__, ret);
  163. if (!(size > 0 && valid_elf_image(loadaddr))) {
  164. debug("Shutting down...\n");
  165. release_resources_for_core_shutdown();
  166. while (1)
  167. asm volatile("wfe");
  168. }
  169. image_entry_noargs_t image_entry =
  170. (image_entry_noargs_t)load_elf_image_phdr(loadaddr);
  171. image_entry();
  172. }
  173. #endif
  174. #if defined(CONFIG_OF_LIBFDT)
  175. int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name)
  176. {
  177. u64 msmc_start = 0, msmc_end = 0, msmc_size, reg[2];
  178. struct ti_sci_handle *ti_sci = get_ti_sci_handle();
  179. int ret, node, subnode, len, prev_node;
  180. u32 range[4], addr, size;
  181. const fdt32_t *sub_reg;
  182. ti_sci->ops.core_ops.query_msmc(ti_sci, &msmc_start, &msmc_end);
  183. msmc_size = msmc_end - msmc_start + 1;
  184. debug("%s: msmc_start = 0x%llx, msmc_size = 0x%llx\n", __func__,
  185. msmc_start, msmc_size);
  186. /* find or create "msmc_sram node */
  187. ret = fdt_path_offset(blob, parent_path);
  188. if (ret < 0)
  189. return ret;
  190. node = fdt_find_or_add_subnode(blob, ret, node_name);
  191. if (node < 0)
  192. return node;
  193. ret = fdt_setprop_string(blob, node, "compatible", "mmio-sram");
  194. if (ret < 0)
  195. return ret;
  196. reg[0] = cpu_to_fdt64(msmc_start);
  197. reg[1] = cpu_to_fdt64(msmc_size);
  198. ret = fdt_setprop(blob, node, "reg", reg, sizeof(reg));
  199. if (ret < 0)
  200. return ret;
  201. fdt_setprop_cell(blob, node, "#address-cells", 1);
  202. fdt_setprop_cell(blob, node, "#size-cells", 1);
  203. range[0] = 0;
  204. range[1] = cpu_to_fdt32(msmc_start >> 32);
  205. range[2] = cpu_to_fdt32(msmc_start & 0xffffffff);
  206. range[3] = cpu_to_fdt32(msmc_size);
  207. ret = fdt_setprop(blob, node, "ranges", range, sizeof(range));
  208. if (ret < 0)
  209. return ret;
  210. subnode = fdt_first_subnode(blob, node);
  211. prev_node = 0;
  212. /* Look for invalid subnodes and delete them */
  213. while (subnode >= 0) {
  214. sub_reg = fdt_getprop(blob, subnode, "reg", &len);
  215. addr = fdt_read_number(sub_reg, 1);
  216. sub_reg++;
  217. size = fdt_read_number(sub_reg, 1);
  218. debug("%s: subnode = %d, addr = 0x%x. size = 0x%x\n", __func__,
  219. subnode, addr, size);
  220. if (addr + size > msmc_size ||
  221. !strncmp(fdt_get_name(blob, subnode, &len), "sysfw", 5) ||
  222. !strncmp(fdt_get_name(blob, subnode, &len), "l3cache", 7)) {
  223. fdt_del_node(blob, subnode);
  224. debug("%s: deleting subnode %d\n", __func__, subnode);
  225. if (!prev_node)
  226. subnode = fdt_first_subnode(blob, node);
  227. else
  228. subnode = fdt_next_subnode(blob, prev_node);
  229. } else {
  230. prev_node = subnode;
  231. subnode = fdt_next_subnode(blob, prev_node);
  232. }
  233. }
  234. return 0;
  235. }
  236. int fdt_disable_node(void *blob, char *node_path)
  237. {
  238. int offs;
  239. int ret;
  240. offs = fdt_path_offset(blob, node_path);
  241. if (offs < 0) {
  242. printf("Node %s not found.\n", node_path);
  243. return offs;
  244. }
  245. ret = fdt_setprop_string(blob, offs, "status", "disabled");
  246. if (ret < 0) {
  247. printf("Could not add status property to node %s: %s\n",
  248. node_path, fdt_strerror(ret));
  249. return ret;
  250. }
  251. return 0;
  252. }
  253. #endif
  254. #ifndef CONFIG_SYSRESET
  255. void reset_cpu(ulong ignored)
  256. {
  257. }
  258. #endif
  259. #if defined(CONFIG_DISPLAY_CPUINFO)
  260. int print_cpuinfo(void)
  261. {
  262. u32 soc, rev;
  263. char *name;
  264. soc = (readl(CTRLMMR_WKUP_JTAG_ID) &
  265. JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT;
  266. rev = (readl(CTRLMMR_WKUP_JTAG_ID) &
  267. JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT;
  268. printf("SoC: ");
  269. switch (soc) {
  270. case AM65X:
  271. name = "AM65x";
  272. break;
  273. case J721E:
  274. name = "J721E";
  275. break;
  276. default:
  277. name = "Unknown Silicon";
  278. };
  279. printf("%s SR ", name);
  280. switch (rev) {
  281. case REV_PG1_0:
  282. name = "1.0";
  283. break;
  284. case REV_PG2_0:
  285. name = "2.0";
  286. break;
  287. default:
  288. name = "Unknown Revision";
  289. };
  290. printf("%s\n", name);
  291. return 0;
  292. }
  293. #endif
  294. #ifdef CONFIG_ARM64
  295. void board_prep_linux(bootm_headers_t *images)
  296. {
  297. debug("Linux kernel Image start = 0x%lx end = 0x%lx\n",
  298. images->os.start, images->os.end);
  299. __asm_flush_dcache_range(images->os.start,
  300. ROUND(images->os.end,
  301. CONFIG_SYS_CACHELINE_SIZE));
  302. }
  303. #endif
  304. #ifdef CONFIG_CPU_V7R
  305. void disable_linefill_optimization(void)
  306. {
  307. u32 actlr;
  308. /*
  309. * On K3 devices there are 2 conditions where R5F can deadlock:
  310. * 1.When software is performing series of store operations to
  311. * cacheable write back/write allocate memory region and later
  312. * on software execute barrier operation (DSB or DMB). R5F may
  313. * hang at the barrier instruction.
  314. * 2.When software is performing a mix of load and store operations
  315. * within a tight loop and store operations are all writing to
  316. * cacheable write back/write allocates memory regions, R5F may
  317. * hang at one of the load instruction.
  318. *
  319. * To avoid the above two conditions disable linefill optimization
  320. * inside Cortex R5F.
  321. */
  322. asm("mrc p15, 0, %0, c1, c0, 1" : "=r" (actlr));
  323. actlr |= (1 << 13); /* Set DLFO bit */
  324. asm("mcr p15, 0, %0, c1, c0, 1" : : "r" (actlr));
  325. }
  326. #endif
  327. void remove_fwl_configs(struct fwl_data *fwl_data, size_t fwl_data_size)
  328. {
  329. struct ti_sci_msg_fwl_region region;
  330. struct ti_sci_fwl_ops *fwl_ops;
  331. struct ti_sci_handle *ti_sci;
  332. size_t i, j;
  333. ti_sci = get_ti_sci_handle();
  334. fwl_ops = &ti_sci->ops.fwl_ops;
  335. for (i = 0; i < fwl_data_size; i++) {
  336. for (j = 0; j < fwl_data[i].regions; j++) {
  337. region.fwl_id = fwl_data[i].fwl_id;
  338. region.region = j;
  339. region.n_permission_regs = 3;
  340. fwl_ops->get_fwl_region(ti_sci, &region);
  341. if (region.control != 0) {
  342. pr_debug("Attempting to disable firewall %5d (%25s)\n",
  343. region.fwl_id, fwl_data[i].name);
  344. region.control = 0;
  345. if (fwl_ops->set_fwl_region(ti_sci, &region))
  346. pr_err("Could not disable firewall %5d (%25s)\n",
  347. region.fwl_id, fwl_data[i].name);
  348. }
  349. }
  350. }
  351. }