#include <errno.h>
#include <libfdt.h>
#include <libfdt_env.h>
+#include <memalign.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
/*
* When booting using the "bootefi" command, we don't know which
}
};
+static struct efi_device_path_file_path bootefi_device_path[] = {
+ {
+ .dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE,
+ .dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH,
+ .dp.length = sizeof(bootefi_image_path[0]),
+ .str = { 'b','o','o','t','e','f','i' },
+ }, {
+ .dp.type = DEVICE_PATH_TYPE_END,
+ .dp.sub_type = DEVICE_PATH_SUB_TYPE_END,
+ .dp.length = sizeof(bootefi_image_path[0]),
+ }
+};
+
static efi_status_t bootefi_open_dp(void *handle, efi_guid_t *protocol,
void **protocol_interface, void *agent_handle,
void *controller_handle, uint32_t attributes)
{
- *protocol_interface = bootefi_image_path;
+ *protocol_interface = bootefi_device_path;
return EFI_SUCCESS;
}
/* The EFI loaded_image interface for the image executed via "bootefi" */
static struct efi_loaded_image loaded_image_info = {
- .device_handle = bootefi_image_path,
+ .device_handle = bootefi_device_path,
.file_path = bootefi_image_path,
};
{
/*
* When asking for the device path interface, return
- * bootefi_image_path
+ * bootefi_device_path
*/
.guid = &efi_guid_device_path,
.open = &bootefi_open_dp,
/* The EFI object struct for the device the "bootefi" image was loaded from */
static struct efi_object bootefi_device_obj = {
- .handle = bootefi_image_path,
+ .handle = bootefi_device_path,
.protocols = {
{
/* When asking for the device path interface, return
- * bootefi_image_path */
+ * bootefi_device_path */
.guid = &efi_guid_device_path,
.open = &bootefi_open_dp,
}
},
};
+static void *copy_fdt(void *fdt)
+{
+ u64 fdt_size = fdt_totalsize(fdt);
+ unsigned long fdt_ram_start = -1L, fdt_pages;
+ u64 new_fdt_addr;
+ void *new_fdt;
+ int i;
+
+ for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+ u64 ram_start = gd->bd->bi_dram[i].start;
+ u64 ram_size = gd->bd->bi_dram[i].size;
+
+ if (!ram_size)
+ continue;
+
+ if (ram_start < fdt_ram_start)
+ fdt_ram_start = ram_start;
+ }
+
+ /* Give us at least 4kb breathing room */
+ fdt_size = ALIGN(fdt_size + 4096, 4096);
+ fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
+
+ /* Safe fdt location is at 128MB */
+ new_fdt_addr = fdt_ram_start + (128 * 1024 * 1024) + fdt_size;
+ if (efi_allocate_pages(1, EFI_BOOT_SERVICES_DATA, fdt_pages,
+ &new_fdt_addr) != EFI_SUCCESS) {
+ /* If we can't put it there, put it somewhere */
+ new_fdt_addr = (ulong)memalign(4096, fdt_size);
+ }
+ new_fdt = (void*)(ulong)new_fdt_addr;
+ memcpy(new_fdt, fdt, fdt_totalsize(fdt));
+ fdt_set_totalsize(new_fdt, fdt_size);
+
+ return new_fdt;
+}
+
/*
* Load an EFI payload into a newly allocated piece of memory, register all
* EFI objects it would want to access and jump to it.
*/
-static unsigned long do_bootefi_exec(void *efi)
+static unsigned long do_bootefi_exec(void *efi, void *fdt)
{
ulong (*entry)(void *image_handle, struct efi_system_table *st);
ulong fdt_pages, fdt_size, fdt_start, fdt_end;
*/
efi_save_gd();
- /* Update system table to point to our currently loaded FDT */
-
- if (working_fdt) {
+ if (fdt && !fdt_check_header(fdt)) {
/* Prepare fdt for payload */
- if (image_setup_libfdt(&img, working_fdt, 0, NULL)) {
+ fdt = copy_fdt(fdt);
+
+ if (image_setup_libfdt(&img, fdt, 0, NULL)) {
printf("ERROR: Failed to process device tree\n");
return -EINVAL;
}
/* Link to it in the efi tables */
systab.tables[0].guid = EFI_FDT_GUID;
- systab.tables[0].table = working_fdt;
+ systab.tables[0].table = fdt;
systab.nr_tables = 1;
/* And reserve the space in the memory map */
- fdt_start = ((ulong)working_fdt) & ~EFI_PAGE_MASK;
- fdt_end = ((ulong)working_fdt) + fdt_totalsize(working_fdt);
+ fdt_start = ((ulong)fdt) & ~EFI_PAGE_MASK;
+ fdt_end = ((ulong)fdt) + fdt_totalsize(fdt);
fdt_size = (fdt_end - fdt_start) + EFI_PAGE_MASK;
fdt_pages = fdt_size >> EFI_PAGE_SHIFT;
/* Give a bootloader the chance to modify the device tree */
fdt_pages += 2;
efi_add_memory_map(fdt_start, fdt_pages,
EFI_BOOT_SERVICES_DATA, true);
-
} else {
- printf("WARNING: No device tree loaded, expect boot to fail\n");
+ printf("WARNING: Invalid device tree, expect boot to fail\n");
systab.nr_tables = 0;
}
/* Interpreter command to boot an arbitrary EFI image from memory */
static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- char *saddr;
- unsigned long addr;
+ char *saddr, *sfdt;
+ unsigned long addr, fdt_addr = 0;
int r = 0;
if (argc < 2)
addr = simple_strtoul(saddr, NULL, 16);
+ if (argc > 2) {
+ sfdt = argv[2];
+ fdt_addr = simple_strtoul(sfdt, NULL, 16);
+ }
+
printf("## Starting EFI application at 0x%08lx ...\n", addr);
- r = do_bootefi_exec((void *)addr);
+ r = do_bootefi_exec((void *)addr, (void*)fdt_addr);
printf("## Application terminated, r = %d\n", r);
if (r != 0)
#ifdef CONFIG_SYS_LONGHELP
static char bootefi_help_text[] =
- "<image address>\n"
- " - boot EFI payload stored at address <image address>\n"
- "\n"
- "Since most EFI payloads want to have a device tree provided, please\n"
- "make sure you load a device tree using the fdt addr command before\n"
- "executing bootefi.\n";
+ "<image address> [fdt address]\n"
+ " - boot EFI payload stored at address <image address>.\n"
+ " If specified, the device tree located at <fdt address> gets\n"
+ " exposed as EFI configuration table.\n";
#endif
U_BOOT_CMD(
- bootefi, 2, 0, do_bootefi,
+ bootefi, 3, 0, do_bootefi,
"Boots an EFI payload from memory\n",
bootefi_help_text
);
-void efi_set_bootdev(const char *dev, const char *devnr)
+void efi_set_bootdev(const char *dev, const char *devnr, const char *path)
{
- char devname[16] = { 0 }; /* dp->str is u16[16] long */
+ __maybe_unused struct blk_desc *desc;
+ char devname[32] = { 0 }; /* dp->str is u16[32] long */
char *colon;
/* Assemble the condensed device name we use in efi_disk.c */
snprintf(devname, sizeof(devname), "%s%s", dev, devnr);
colon = strchr(devname, ':');
+
+#ifdef CONFIG_ISO_PARTITION
+ /* For ISOs we create partition block devices */
+ desc = blk_get_dev(dev, simple_strtol(devnr, NULL, 10));
+ if (desc && (desc->type != DEV_TYPE_UNKNOWN) &&
+ (desc->part_type == PART_TYPE_ISO)) {
+ if (!colon)
+ snprintf(devname, sizeof(devname), "%s%s:1", dev,
+ devnr);
+ colon = NULL;
+ }
+#endif
+
if (colon)
*colon = '\0';
- /* Patch the bootefi_image_path to the target device */
+ /* Patch bootefi_device_path to the target device */
+ memset(bootefi_device_path[0].str, 0, sizeof(bootefi_device_path[0].str));
+ ascii2unicode(bootefi_device_path[0].str, devname);
+
+ /* Patch bootefi_image_path to the target file path */
memset(bootefi_image_path[0].str, 0, sizeof(bootefi_image_path[0].str));
+ snprintf(devname, sizeof(devname), "%s", path);
ascii2unicode(bootefi_image_path[0].str, devname);
}
projects / u-boot / blobdiff