// SPDX-License-Identifier: GPL-2.0+ /* * K3: Common Architecture initialization * * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ * Lokesh Vutla */ #include #include #include "common.h" #include #include #include #include #include #include #include struct ti_sci_handle *get_ti_sci_handle(void) { struct udevice *dev; int ret; ret = uclass_get_device_by_driver(UCLASS_FIRMWARE, DM_GET_DRIVER(ti_sci), &dev); if (ret) panic("Failed to get SYSFW (%d)\n", ret); return (struct ti_sci_handle *)ti_sci_get_handle_from_sysfw(dev); } DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_K3_EARLY_CONS int early_console_init(void) { struct udevice *dev; int ret; gd->baudrate = CONFIG_BAUDRATE; ret = uclass_get_device_by_seq(UCLASS_SERIAL, CONFIG_K3_EARLY_CONS_IDX, &dev); if (ret) { printf("Error getting serial dev for early console! (%d)\n", ret); return ret; } gd->cur_serial_dev = dev; gd->flags |= GD_FLG_SERIAL_READY; gd->have_console = 1; return 0; } #endif #ifdef CONFIG_SYS_K3_SPL_ATF void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) { struct ti_sci_handle *ti_sci = get_ti_sci_handle(); int ret; /* Release all the exclusive devices held by SPL before starting ATF */ ti_sci->ops.dev_ops.release_exclusive_devices(ti_sci); /* * It is assumed that remoteproc device 1 is the corresponding * Cortex-A core which runs ATF. Make sure DT reflects the same. */ ret = rproc_dev_init(1); if (ret) panic("%s: ATF failed to initialize on rproc (%d)\n", __func__, ret); ret = rproc_load(1, spl_image->entry_point, 0x200); if (ret) panic("%s: ATF failed to load on rproc (%d)\n", __func__, ret); /* Add an extra newline to differentiate the ATF logs from SPL */ printf("Starting ATF on ARM64 core...\n\n"); ret = rproc_start(1); if (ret) panic("%s: ATF failed to start on rproc (%d)\n", __func__, ret); debug("Releasing resources...\n"); release_resources_for_core_shutdown(); debug("Finalizing core shutdown...\n"); while (1) asm volatile("wfe"); } #endif #if defined(CONFIG_OF_LIBFDT) int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name) { u64 msmc_start = 0, msmc_end = 0, msmc_size, reg[2]; struct ti_sci_handle *ti_sci = get_ti_sci_handle(); int ret, node, subnode, len, prev_node; u32 range[4], addr, size; const fdt32_t *sub_reg; ti_sci->ops.core_ops.query_msmc(ti_sci, &msmc_start, &msmc_end); msmc_size = msmc_end - msmc_start + 1; debug("%s: msmc_start = 0x%llx, msmc_size = 0x%llx\n", __func__, msmc_start, msmc_size); /* find or create "msmc_sram node */ ret = fdt_path_offset(blob, parent_path); if (ret < 0) return ret; node = fdt_find_or_add_subnode(blob, ret, node_name); if (node < 0) return node; ret = fdt_setprop_string(blob, node, "compatible", "mmio-sram"); if (ret < 0) return ret; reg[0] = cpu_to_fdt64(msmc_start); reg[1] = cpu_to_fdt64(msmc_size); ret = fdt_setprop(blob, node, "reg", reg, sizeof(reg)); if (ret < 0) return ret; fdt_setprop_cell(blob, node, "#address-cells", 1); fdt_setprop_cell(blob, node, "#size-cells", 1); range[0] = 0; range[1] = cpu_to_fdt32(msmc_start >> 32); range[2] = cpu_to_fdt32(msmc_start & 0xffffffff); range[3] = cpu_to_fdt32(msmc_size); ret = fdt_setprop(blob, node, "ranges", range, sizeof(range)); if (ret < 0) return ret; subnode = fdt_first_subnode(blob, node); prev_node = 0; /* Look for invalid subnodes and delete them */ while (subnode >= 0) { sub_reg = fdt_getprop(blob, subnode, "reg", &len); addr = fdt_read_number(sub_reg, 1); sub_reg++; size = fdt_read_number(sub_reg, 1); debug("%s: subnode = %d, addr = 0x%x. size = 0x%x\n", __func__, subnode, addr, size); if (addr + size > msmc_size || !strncmp(fdt_get_name(blob, subnode, &len), "sysfw", 5) || !strncmp(fdt_get_name(blob, subnode, &len), "l3cache", 7)) { fdt_del_node(blob, subnode); debug("%s: deleting subnode %d\n", __func__, subnode); if (!prev_node) subnode = fdt_first_subnode(blob, node); else subnode = fdt_next_subnode(blob, prev_node); } else { prev_node = subnode; subnode = fdt_next_subnode(blob, prev_node); } } return 0; } int fdt_disable_node(void *blob, char *node_path) { int offs; int ret; offs = fdt_path_offset(blob, node_path); if (offs < 0) { printf("Node %s not found.\n", node_path); return offs; } ret = fdt_setprop_string(blob, offs, "status", "disabled"); if (ret < 0) { printf("Could not add status property to node %s: %s\n", node_path, fdt_strerror(ret)); return ret; } return 0; } #endif #ifndef CONFIG_SYSRESET void reset_cpu(ulong ignored) { } #endif #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo(void) { u32 soc, rev; char *name; soc = (readl(CTRLMMR_WKUP_JTAG_DEVICE_ID) & DEVICE_ID_FAMILY_MASK) >> DEVICE_ID_FAMILY_SHIFT; rev = (readl(CTRLMMR_WKUP_JTAG_ID) & JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT; printf("SoC: "); switch (soc) { case AM654: name = "AM654"; break; case J721E: name = "J721E"; break; default: name = "Unknown Silicon"; }; printf("%s PG ", name); switch (rev) { case REV_PG1_0: name = "1.0"; break; case REV_PG2_0: name = "2.0"; break; default: name = "Unknown Revision"; }; printf("%s\n", name); return 0; } #endif #ifdef CONFIG_ARM64 void board_prep_linux(bootm_headers_t *images) { debug("Linux kernel Image start = 0x%lx end = 0x%lx\n", images->os.start, images->os.end); __asm_flush_dcache_range(images->os.start, ROUND(images->os.end, CONFIG_SYS_CACHELINE_SIZE)); } #endif #ifdef CONFIG_CPU_V7R void disable_linefill_optimization(void) { u32 actlr; /* * On K3 devices there are 2 conditions where R5F can deadlock: * 1.When software is performing series of store operations to * cacheable write back/write allocate memory region and later * on software execute barrier operation (DSB or DMB). R5F may * hang at the barrier instruction. * 2.When software is performing a mix of load and store operations * within a tight loop and store operations are all writing to * cacheable write back/write allocates memory regions, R5F may * hang at one of the load instruction. * * To avoid the above two conditions disable linefill optimization * inside Cortex R5F. */ asm("mrc p15, 0, %0, c1, c0, 1" : "=r" (actlr)); actlr |= (1 << 13); /* Set DLFO bit */ asm("mcr p15, 0, %0, c1, c0, 1" : : "r" (actlr)); } #endif