diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-omap2/fdt-common.c')
| -rw-r--r-- | roms/u-boot/arch/arm/mach-omap2/fdt-common.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-omap2/fdt-common.c b/roms/u-boot/arch/arm/mach-omap2/fdt-common.c new file mode 100644 index 000000000..5eb044731 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-omap2/fdt-common.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2016-2017 Texas Instruments, Inc. + */ + +#include <common.h> +#include <log.h> +#include <linux/libfdt.h> +#include <fdt_support.h> + +#include <asm/omap_common.h> +#include <asm/omap_sec_common.h> + +#ifdef CONFIG_TI_SECURE_DEVICE + +/* Give zero values if not already defined */ +#ifndef TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ +#define TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ (0) +#endif +#ifndef CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ +#define CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ (0) +#endif + +int ft_hs_disable_rng(void *fdt, struct bd_info *bd) +{ + const char *path; + int offs; + int ret; + + /* Make HW RNG reserved for secure world use */ + path = "/ocp/rng"; + offs = fdt_path_offset(fdt, path); + if (offs < 0) { + debug("Node %s not found.\n", path); + return 0; + } + ret = fdt_setprop_string(fdt, offs, + "status", "disabled"); + if (ret < 0) { + printf("Could not add status property to node %s: %s\n", + path, fdt_strerror(ret)); + return ret; + } + return 0; +} + +#if (CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE != 0) +/* + * fdt_pack_reg - pack address and size array into the "reg"-suitable stream + */ +static int fdt_pack_reg(const void *fdt, void *buf, u64 address, u64 size) +{ + int address_cells = fdt_address_cells(fdt, 0); + int size_cells = fdt_size_cells(fdt, 0); + char *p = buf; + + if (address_cells == 2) + *(fdt64_t *)p = cpu_to_fdt64(address); + else + *(fdt32_t *)p = cpu_to_fdt32(address); + p += 4 * address_cells; + + if (size_cells == 2) + *(fdt64_t *)p = cpu_to_fdt64(size); + else + *(fdt32_t *)p = cpu_to_fdt32(size); + p += 4 * size_cells; + + return p - (char *)buf; +} + +int ft_hs_fixup_dram(void *fdt, struct bd_info *bd) +{ + const char *path, *subpath; + int offs, len; + u32 sec_mem_start = get_sec_mem_start(); + u32 sec_mem_size = CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE; + fdt32_t address_cells = cpu_to_fdt32(fdt_address_cells(fdt, 0)); + fdt32_t size_cells = cpu_to_fdt32(fdt_size_cells(fdt, 0)); + u8 temp[16]; /* Up to 64-bit address + 64-bit size */ + + /* Delete any original secure_reserved node */ + path = "/reserved-memory/secure_reserved"; + offs = fdt_path_offset(fdt, path); + if (offs >= 0) + fdt_del_node(fdt, offs); + + /* Add new secure_reserved node */ + path = "/reserved-memory"; + offs = fdt_path_offset(fdt, path); + if (offs < 0) { + debug("Node %s not found\n", path); + path = "/"; + subpath = "reserved-memory"; + offs = fdt_path_offset(fdt, path); + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s%s node.\n", path, subpath); + return 1; + } + path = "/reserved-memory"; + offs = fdt_path_offset(fdt, path); + + fdt_setprop(fdt, offs, "#address-cells", &address_cells, sizeof(address_cells)); + fdt_setprop(fdt, offs, "#size-cells", &size_cells, sizeof(size_cells)); + fdt_setprop(fdt, offs, "ranges", NULL, 0); + } + + subpath = "secure_reserved"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s%s node.\n", path, subpath); + return 1; + } + + fdt_setprop_string(fdt, offs, "compatible", "ti,secure-memory"); + fdt_setprop_string(fdt, offs, "status", "okay"); + fdt_setprop(fdt, offs, "no-map", NULL, 0); + len = fdt_pack_reg(fdt, temp, sec_mem_start, sec_mem_size); + fdt_setprop(fdt, offs, "reg", temp, len); + + return 0; +} +#else +int ft_hs_fixup_dram(void *fdt, struct bd_info *bd) { return 0; } +#endif + +int ft_hs_add_tee(void *fdt, struct bd_info *bd) +{ + const char *path, *subpath; + int offs; + + extern int tee_loaded; + if (!tee_loaded) + return 0; + + path = "/firmware"; + offs = fdt_path_offset(fdt, path); + if (offs < 0) { + path = "/"; + offs = fdt_path_offset(fdt, path); + if (offs < 0) { + printf("Could not find root node.\n"); + return 1; + } + + subpath = "firmware"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s node.\n", subpath); + return 1; + } + } + + subpath = "optee"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s node.\n", subpath); + return 1; + } + + fdt_setprop_string(fdt, offs, "compatible", "linaro,optee-tz"); + fdt_setprop_string(fdt, offs, "method", "smc"); + + return 0; +} + +#endif |