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authorSascha Hauer <s.hauer@pengutronix.de>2014-07-07 18:02:53 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2014-07-16 10:46:18 +0200
commit1dff7e414d78d5fd8ff62a57b67617aa1f73e532 (patch)
tree48c3360c0536ce6096a50b774ed8c7d121b46dc2 /arch/efi/efi/efi-image.c
parent3475ba2a1da1358697297a3cf9337eed10b69695 (diff)
downloadbarebox-1dff7e414d78d5fd8ff62a57b67617aa1f73e532.tar.gz
barebox-1dff7e414d78d5fd8ff62a57b67617aa1f73e532.tar.xz
Add initial EFI architecture support
This adds support for running barebox in an EFI environment on X86 PC hardware. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/efi/efi/efi-image.c')
-rw-r--r--arch/efi/efi/efi-image.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/arch/efi/efi/efi-image.c b/arch/efi/efi/efi-image.c
new file mode 100644
index 000000000..18757d269
--- /dev/null
+++ b/arch/efi/efi/efi-image.c
@@ -0,0 +1,105 @@
+/*
+ * efi-image.c - barebox EFI payload support
+ *
+ * Copyright (c) 2014 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <sizes.h>
+#include <memory.h>
+#include <command.h>
+#include <magicvar.h>
+#include <init.h>
+#include <driver.h>
+#include <io.h>
+#include <efi.h>
+#include <malloc.h>
+#include <string.h>
+#include <linux/err.h>
+#include <boot.h>
+#include <fs.h>
+#include <binfmt.h>
+#include <wchar.h>
+#include <mach/efi.h>
+#include <mach/efi-device.h>
+
+static int efi_execute_image(const char *file)
+{
+ void *exe;
+ size_t size;
+ efi_handle_t handle;
+ efi_status_t efiret;
+ const char *options;
+ efi_loaded_image_t *loaded_image;
+
+ exe = read_file(file, &size);
+ if (!exe)
+ return -EINVAL;
+
+ efiret = BS->load_image(false, efi_parent_image, efi_device_path, exe, size,
+ &handle);
+ if (EFI_ERROR(efiret)) {
+ pr_err("failed to LoadImage: %s\n", efi_strerror(efiret));
+ return -efi_errno(efiret);;
+ };
+
+ efiret = BS->open_protocol(handle, &efi_loaded_image_protocol_guid,
+ (void **)&loaded_image,
+ efi_parent_image, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ if (EFI_ERROR(efiret))
+ return -efi_errno(efiret);
+
+ options = linux_bootargs_get();
+ loaded_image->load_options = strdup_char_to_wchar(options);
+ loaded_image->load_options_size = (strlen(options) + 1) * sizeof(wchar_t);
+
+ efiret = BS->start_image(handle, NULL, NULL);
+
+ efi_connect_all();
+ efi_register_devices();
+
+ return 0;
+}
+
+static int do_bootm_efi(struct image_data *data)
+{
+ return efi_execute_image(data->os_file);
+}
+
+static struct image_handler efi_handle_tr = {
+ .name = "EFI Application",
+ .bootm = do_bootm_efi,
+ .filetype = filetype_exe,
+};
+
+static int efi_execute(struct binfmt_hook *b, char *file, int argc, char **argv)
+{
+ return efi_execute_image(file);
+}
+
+static struct binfmt_hook binfmt_efi_hook = {
+ .type = filetype_exe,
+ .hook = efi_execute,
+};
+
+static int efi_register_image_handler(void)
+{
+ register_image_handler(&efi_handle_tr);
+ binfmt_register(&binfmt_efi_hook);
+
+ return 0;
+}
+late_initcall(efi_register_image_handler);