* Copyright (c) 2016 Alexander Graf
*/
+#define LOG_CATEGORY LOGC_EFI
+
#include <common.h>
+#include <bootm.h>
#include <charset.h>
#include <command.h>
#include <dm.h>
#include <efi_selftest.h>
#include <env.h>
#include <errno.h>
+#include <image.h>
+#include <log.h>
#include <malloc.h>
+#include <asm/global_data.h>
#include <linux/libfdt.h>
#include <linux/libfdt_env.h>
#include <mapmem.h>
static struct efi_device_path *bootefi_image_path;
static struct efi_device_path *bootefi_device_path;
+static void *image_addr;
+static size_t image_size;
/**
- * Set the load options of an image from an environment variable.
+ * efi_clear_bootdev() - clear boot device
+ */
+static void efi_clear_bootdev(void)
+{
+ efi_free_pool(bootefi_device_path);
+ efi_free_pool(bootefi_image_path);
+ bootefi_device_path = NULL;
+ bootefi_image_path = NULL;
+ image_addr = NULL;
+ image_size = 0;
+}
+
+/**
+ * efi_set_bootdev() - set boot device
+ *
+ * This function is called when a file is loaded, e.g. via the 'load' command.
+ * We use the path to this file to inform the UEFI binary about the boot device.
+ *
+ * @dev: device, e.g. "MMC"
+ * @devnr: number of the device, e.g. "1:2"
+ * @path: path to file loaded
+ * @buffer: buffer with file loaded
+ * @buffer_size: size of file loaded
+ */
+void efi_set_bootdev(const char *dev, const char *devnr, const char *path,
+ void *buffer, size_t buffer_size)
+{
+ struct efi_device_path *device, *image;
+ efi_status_t ret;
+
+ /* Forget overwritten image */
+ if (buffer + buffer_size >= image_addr &&
+ image_addr + image_size >= buffer)
+ efi_clear_bootdev();
+
+ /* Remember only PE-COFF and FIT images */
+ if (efi_check_pe(buffer, buffer_size, NULL) != EFI_SUCCESS) {
+#ifdef CONFIG_FIT
+ if (fit_check_format(buffer, IMAGE_SIZE_INVAL))
+ return;
+ /*
+ * FIT images of type EFI_OS are started via command bootm.
+ * We should not use their boot device with the bootefi command.
+ */
+ buffer = 0;
+ buffer_size = 0;
+#else
+ return;
+#endif
+ }
+
+ /* efi_set_bootdev() is typically called repeatedly, recover memory */
+ efi_clear_bootdev();
+
+ image_addr = buffer;
+ image_size = buffer_size;
+
+ ret = efi_dp_from_name(dev, devnr, path, &device, &image);
+ if (ret == EFI_SUCCESS) {
+ bootefi_device_path = device;
+ if (image) {
+ /* FIXME: image should not contain device */
+ struct efi_device_path *image_tmp = image;
+
+ efi_dp_split_file_path(image, &device, &image);
+ efi_free_pool(image_tmp);
+ }
+ bootefi_image_path = image;
+ } else {
+ efi_clear_bootdev();
+ }
+}
+
+/**
+ * efi_env_set_load_options() - set load options from environment variable
*
* @handle: the image handle
* @env_var: name of the environment variable
* @load_options: pointer to load options (output)
* Return: status code
*/
-static efi_status_t set_load_options(efi_handle_t handle, const char *env_var,
- u16 **load_options)
+static efi_status_t efi_env_set_load_options(efi_handle_t handle,
+ const char *env_var,
+ u16 **load_options)
{
- struct efi_loaded_image *loaded_image_info;
- size_t size;
const char *env = env_get(env_var);
+ size_t size;
u16 *pos;
efi_status_t ret;
*load_options = NULL;
- ret = EFI_CALL(systab.boottime->open_protocol(
- handle,
- &efi_guid_loaded_image,
- (void **)&loaded_image_info,
- efi_root, NULL,
- EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL));
- if (ret != EFI_SUCCESS)
- return EFI_INVALID_PARAMETER;
-
- loaded_image_info->load_options = NULL;
- loaded_image_info->load_options_size = 0;
if (!env)
- goto out;
-
- size = utf8_utf16_strlen(env) + 1;
- loaded_image_info->load_options = calloc(size, sizeof(u16));
- if (!loaded_image_info->load_options) {
- printf("ERROR: Out of memory\n");
- EFI_CALL(systab.boottime->close_protocol(handle,
- &efi_guid_loaded_image,
- efi_root, NULL));
+ return EFI_SUCCESS;
+ size = sizeof(u16) * (utf8_utf16_strlen(env) + 1);
+ pos = calloc(size, 1);
+ if (!pos)
return EFI_OUT_OF_RESOURCES;
- }
- pos = loaded_image_info->load_options;
*load_options = pos;
utf8_utf16_strcpy(&pos, env);
- loaded_image_info->load_options_size = size * 2;
-
-out:
- return EFI_CALL(systab.boottime->close_protocol(handle,
- &efi_guid_loaded_image,
- efi_root, NULL));
+ ret = efi_set_load_options(handle, size, *load_options);
+ if (ret != EFI_SUCCESS) {
+ free(*load_options);
+ *load_options = NULL;
+ }
+ return ret;
}
#if !CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
EFI_ACPI_RECLAIM_MEMORY, fdt_pages,
&new_fdt_addr);
if (ret != EFI_SUCCESS) {
- printf("ERROR: Failed to reserve space for FDT\n");
+ log_err("ERROR: Failed to reserve space for FDT\n");
goto done;
}
}
return ret;
}
-static void efi_reserve_memory(u64 addr, u64 size)
-{
- /* Convert from sandbox address space. */
- addr = (uintptr_t)map_sysmem(addr, 0);
- if (efi_add_memory_map(addr, size,
- EFI_RESERVED_MEMORY_TYPE) != EFI_SUCCESS)
- printf("Reserved memory mapping failed addr %llx size %llx\n",
- addr, size);
-}
-
-/**
- * efi_carve_out_dt_rsv() - Carve out DT reserved memory ranges
- *
- * The mem_rsv entries of the FDT are added to the memory map. Any failures are
- * ignored because this is not critical and we would rather continue to try to
- * boot.
- *
- * @fdt: Pointer to device tree
- */
-static void efi_carve_out_dt_rsv(void *fdt)
-{
- int nr_rsv, i;
- u64 addr, size;
- int nodeoffset, subnode;
-
- nr_rsv = fdt_num_mem_rsv(fdt);
-
- /* Look for an existing entry and add it to the efi mem map. */
- for (i = 0; i < nr_rsv; i++) {
- if (fdt_get_mem_rsv(fdt, i, &addr, &size) != 0)
- continue;
- efi_reserve_memory(addr, size);
- }
-
- /* process reserved-memory */
- nodeoffset = fdt_subnode_offset(fdt, 0, "reserved-memory");
- if (nodeoffset >= 0) {
- subnode = fdt_first_subnode(fdt, nodeoffset);
- while (subnode >= 0) {
- /* check if this subnode has a reg property */
- addr = fdtdec_get_addr_size(fdt, subnode, "reg",
- (fdt_size_t *)&size);
- /*
- * The /reserved-memory node may have children with
- * a size instead of a reg property.
- */
- if (addr != FDT_ADDR_T_NONE &&
- fdtdec_get_is_enabled(fdt, subnode))
- efi_reserve_memory(addr, size);
- subnode = fdt_next_subnode(fdt, subnode);
- }
- }
-}
-
/**
* get_config_table() - get configuration table
*
*/
#if CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
if (fdt) {
- printf("ERROR: can't have ACPI table and device tree.\n");
+ log_err("ERROR: can't have ACPI table and device tree.\n");
return EFI_LOAD_ERROR;
}
#else
if (!fdt_opt) {
fdt_opt = env_get("fdtcontroladdr");
if (!fdt_opt) {
- printf("ERROR: need device tree\n");
+ log_err("ERROR: need device tree\n");
return EFI_NOT_FOUND;
}
}
fdt_addr = simple_strtoul(fdt_opt, NULL, 16);
if (!fdt_addr) {
- printf("ERROR: invalid $fdt_addr or $fdtcontroladdr\n");
+ log_err("ERROR: invalid $fdt_addr or $fdtcontroladdr\n");
return EFI_LOAD_ERROR;
}
fdt = map_sysmem(fdt_addr, 0);
/* Install device tree */
if (fdt_check_header(fdt)) {
- printf("ERROR: invalid device tree\n");
+ log_err("ERROR: invalid device tree\n");
return EFI_LOAD_ERROR;
}
/* Prepare device tree for payload */
ret = copy_fdt(&fdt);
if (ret) {
- printf("ERROR: out of memory\n");
+ log_err("ERROR: out of memory\n");
return EFI_OUT_OF_RESOURCES;
}
if (image_setup_libfdt(&img, fdt, 0, NULL)) {
- printf("ERROR: failed to process device tree\n");
+ log_err("ERROR: failed to process device tree\n");
return EFI_LOAD_ERROR;
}
/* Install device tree as UEFI table */
ret = efi_install_configuration_table(&efi_guid_fdt, fdt);
if (ret != EFI_SUCCESS) {
- printf("ERROR: failed to install device tree\n");
+ log_err("ERROR: failed to install device tree\n");
return ret;
}
#endif /* GENERATE_ACPI_TABLE */
/**
* do_bootefi_exec() - execute EFI binary
*
+ * The image indicated by @handle is started. When it returns the allocated
+ * memory for the @load_options is freed.
+ *
* @handle: handle of loaded image
+ * @load_options: load options
* Return: status code
*
* Load the EFI binary into a newly assigned memory unwinding the relocation
* information, install the loaded image protocol, and call the binary.
*/
-static efi_status_t do_bootefi_exec(efi_handle_t handle)
+static efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options)
{
efi_status_t ret;
efi_uintn_t exit_data_size = 0;
u16 *exit_data = NULL;
- u16 *load_options;
- /* Transfer environment variable as load options */
- ret = set_load_options(handle, "bootargs", &load_options);
- if (ret != EFI_SUCCESS)
- return ret;
+ /* On ARM switch from EL3 or secure mode to EL2 or non-secure mode */
+ switch_to_non_secure_mode();
/* Call our payload! */
ret = EFI_CALL(efi_start_image(handle, &exit_data_size, &exit_data));
- printf("## Application terminated, r = %lu\n", ret & ~EFI_ERROR_MASK);
- if (ret && exit_data) {
- printf("## %ls\n", exit_data);
- efi_free_pool(exit_data);
+ if (ret != EFI_SUCCESS) {
+ log_err("## Application failed, r = %lu\n",
+ ret & ~EFI_ERROR_MASK);
+ if (exit_data) {
+ log_err("## %ls\n", exit_data);
+ efi_free_pool(exit_data);
+ }
}
efi_restore_gd();
free(load_options);
+ if (IS_ENABLED(CONFIG_EFI_LOAD_FILE2_INITRD))
+ efi_initrd_deregister();
+
return ret;
}
{
efi_handle_t handle;
efi_status_t ret;
+ void *load_options;
- ret = efi_bootmgr_load(&handle);
+ ret = efi_bootmgr_load(&handle, &load_options);
if (ret != EFI_SUCCESS) {
- printf("EFI boot manager: Cannot load any image\n");
+ log_notice("EFI boot manager: Cannot load any image\n");
return CMD_RET_FAILURE;
}
- ret = do_bootefi_exec(handle);
+ ret = do_bootefi_exec(handle, load_options);
if (ret != EFI_SUCCESS)
return CMD_RET_FAILURE;
{
void *image_buf;
unsigned long addr, size;
- const char *size_str;
efi_status_t ret;
#ifdef CONFIG_CMD_BOOTEFI_HELLO
if (!strcmp(image_opt, "hello")) {
- char *saddr;
-
- saddr = env_get("loadaddr");
+ image_buf = __efi_helloworld_begin;
size = __efi_helloworld_end - __efi_helloworld_begin;
-
- if (saddr)
- addr = simple_strtoul(saddr, NULL, 16);
- else
- addr = CONFIG_SYS_LOAD_ADDR;
-
- image_buf = map_sysmem(addr, size);
- memcpy(image_buf, __efi_helloworld_begin, size);
-
- efi_free_pool(bootefi_device_path);
- efi_free_pool(bootefi_image_path);
- bootefi_device_path = NULL;
- bootefi_image_path = NULL;
+ efi_clear_bootdev();
} else
#endif
{
- size_str = env_get("filesize");
- if (size_str)
- size = simple_strtoul(size_str, NULL, 16);
- else
- size = 0;
-
- addr = simple_strtoul(image_opt, NULL, 16);
+ addr = strtoul(image_opt, NULL, 16);
/* Check that a numeric value was passed */
- if (!addr && *image_opt != '0')
+ if (!addr)
return CMD_RET_USAGE;
- image_buf = map_sysmem(addr, size);
+ image_buf = map_sysmem(addr, 0);
+
+ if (image_buf != image_addr) {
+ log_err("No UEFI binary known at %s\n", image_opt);
+ return CMD_RET_FAILURE;
+ }
+ size = image_size;
}
ret = efi_run_image(image_buf, size);
{
efi_handle_t mem_handle = NULL, handle;
struct efi_device_path *file_path = NULL;
+ struct efi_device_path *msg_path;
efi_status_t ret;
+ u16 *load_options;
if (!bootefi_device_path || !bootefi_image_path) {
/*
file_path);
if (ret != EFI_SUCCESS)
goto out;
+ msg_path = file_path;
} else {
file_path = efi_dp_append(bootefi_device_path,
bootefi_image_path);
+ msg_path = bootefi_image_path;
}
+ log_info("Booting %pD\n", msg_path);
+
ret = EFI_CALL(efi_load_image(false, efi_root, file_path, source_buffer,
source_size, &handle));
+ if (ret != EFI_SUCCESS) {
+ log_err("Loading image failed\n");
+ goto out;
+ }
+
+ /* Transfer environment variable as load options */
+ ret = efi_env_set_load_options(handle, "bootargs", &load_options);
if (ret != EFI_SUCCESS)
goto out;
- ret = do_bootefi_exec(handle);
+ ret = do_bootefi_exec(handle, load_options);
out:
efi_delete_handle(mem_handle);
return ret;
/* Transfer environment variable as load options */
- return set_load_options((efi_handle_t)*image_objp, load_options_path,
- &load_options);
+ return efi_env_set_load_options((efi_handle_t)*image_objp,
+ load_options_path,
+ &load_options);
}
/**
if (ret == EFI_SUCCESS)
return ret;
- efi_free_pool(bootefi_image_path);
- bootefi_image_path = NULL;
failure:
- efi_free_pool(bootefi_device_path);
- bootefi_device_path = NULL;
+ efi_clear_bootdev();
return ret;
}
* @argv: command line arguments
* Return: status code
*/
-static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_bootefi(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
{
efi_status_t ret;
void *fdt;
/* Initialize EFI drivers */
ret = efi_init_obj_list();
if (ret != EFI_SUCCESS) {
- printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
- ret & ~EFI_ERROR_MASK);
+ log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n",
+ ret & ~EFI_ERROR_MASK);
return CMD_RET_FAILURE;
}
else if (ret != EFI_SUCCESS)
return CMD_RET_FAILURE;
- if (!strcmp(argv[1], "bootmgr"))
- return do_efibootmgr();
+ if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR)) {
+ if (!strcmp(argv[1], "bootmgr"))
+ return do_efibootmgr();
+ }
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
- else if (!strcmp(argv[1], "selftest"))
+ if (!strcmp(argv[1], "selftest"))
return do_efi_selftest();
#endif
" Use environment variable efi_selftest to select a single test.\n"
" Use 'setenv efi_selftest list' to enumerate all tests.\n"
#endif
+#ifdef CONFIG_CMD_BOOTEFI_BOOTMGR
"bootefi bootmgr [fdt address]\n"
" - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
"\n"
" If specified, the device tree located at <fdt address> gets\n"
- " exposed as EFI configuration table.\n";
+ " exposed as EFI configuration table.\n"
+#endif
+ ;
#endif
U_BOOT_CMD(
"Boots an EFI payload from memory",
bootefi_help_text
);
-
-/**
- * efi_set_bootdev() - set boot device
- *
- * This function is called when a file is loaded, e.g. via the 'load' command.
- * We use the path to this file to inform the UEFI binary about the boot device.
- *
- * @dev: device, e.g. "MMC"
- * @devnr: number of the device, e.g. "1:2"
- * @path: path to file loaded
- */
-void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
-{
- struct efi_device_path *device, *image;
- efi_status_t ret;
-
- /* efi_set_bootdev is typically called repeatedly, recover memory */
- efi_free_pool(bootefi_device_path);
- efi_free_pool(bootefi_image_path);
-
- ret = efi_dp_from_name(dev, devnr, path, &device, &image);
- if (ret == EFI_SUCCESS) {
- bootefi_device_path = device;
- if (image) {
- /* FIXME: image should not contain device */
- struct efi_device_path *image_tmp = image;
-
- efi_dp_split_file_path(image, &device, &image);
- efi_free_pool(image_tmp);
- }
- bootefi_image_path = image;
- } else {
- bootefi_device_path = NULL;
- bootefi_image_path = NULL;
- }
-}
projects / platform / kernel / u-boot.git / blobdiff