[PATCH v4 27/33] bootstd: Add a sandbox bootmeth driver

Simon Glass
2022-03-06T12:54:54Z

Add a bootmeth driver for sandbox, used for testing.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

(no changes since v3)

Changes in v3:
- Add a log category

boot/Kconfig | 7 +++++
boot/Makefile | 1 +
boot/bootmeth_sandbox.c | 69 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 77 insertions(+)
create mode 100644 boot/bootmeth_sandbox.c

diff --git a/boot/Kconfig b/boot/Kconfig
index d434048deb..ace6c0761c 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -370,6 +370,13 @@ config BOOTMETH_EFILOADER

This provides a way to try out standard boot on an existing boot flow.

+config BOOTMETH_SANDBOX
+ def_bool y
+ depends on SANDBOX
+ help
+ This is a sandbox bootmeth driver used for testing. It always returns
+ -ENOTSUPP when attempting to boot.
+
endif

config LEGACY_IMAGE_FORMAT
diff --git a/boot/Makefile b/boot/Makefile
index 38b10d81f0..db8cb1187e 100644
--- a/boot/Makefile
+++ b/boot/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_$(SPL_TPL_)BOOTSTD) += bootstd-uclass.o
obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_DISTRO) += bootmeth_distro.o
obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_DISTRO_PXE) += bootmeth_pxe.o
obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_EFILOADER) += bootmeth_efi.o
+obj-$(CONFIG_$(SPL_TPL_)BOOTMETH_SANDBOX) += bootmeth_sandbox.o
ifdef CONFIG_$(SPL_TPL_)BOOTSTD_FULL
obj-$(CONFIG_$(SPL_TPL_)CMD_BOOTEFI_BOOTMGR) += bootmeth_efi_mgr.o
endif
diff --git a/boot/bootmeth_sandbox.c b/boot/bootmeth_sandbox.c
new file mode 100644
index 0000000000..13ec5e95e6
--- /dev/null
+++ b/boot/bootmeth_sandbox.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Bootmethod for sandbox testing
+ *
+ * Copyright 2021 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#define LOG_CATEGORY UCLASS_BOOTSTD
+
+#include <common.h>
+#include <bootdev.h>
+#include <bootflow.h>
+#include <bootmeth.h>
+#include <dm.h>
+
+static int sandbox_check(struct udevice *dev, struct bootflow_iter *iter)
+{
+ return 0;
+}
+
+static int sandbox_read_bootflow(struct udevice *dev, struct bootflow *bflow)
+{
+ /* pretend we are ready */
+ bflow->state = BOOTFLOWST_READY;
+
+ return 0;
+}
+
+static int sandbox_read_file(struct udevice *dev, struct bootflow *bflow,
+ const char *file_path, ulong addr, ulong *sizep)
+{
+ return -ENOSYS;
+}
+
+static int sandbox_boot(struct udevice *dev, struct bootflow *bflow)
+{
+ /* always fail: see bootflow_iter_disable() */
+ return -ENOTSUPP;
+}
+
+static int sandbox_bootmeth_bind(struct udevice *dev)
+{
+ struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
+
+ plat->desc = "Sandbox boot for testing";
+
+ return 0;
+}
+
+static struct bootmeth_ops sandbox_bootmeth_ops = {
+ .check = sandbox_check,
+ .read_bootflow = sandbox_read_bootflow,
+ .read_file = sandbox_read_file,
+ .boot = sandbox_boot,
+};
+
+static const struct udevice_id sandbox_bootmeth_ids[] = {
+ { .compatible = "u-boot,sandbox-syslinux" },
+ { }
+};
+
+U_BOOT_DRIVER(bootmeth_sandbox) = {
+ .name = "bootmeth_sandbox",
+ .id = UCLASS_BOOTMETH,
+ .of_match = sandbox_bootmeth_ids,
+ .ops = &sandbox_bootmeth_ops,
+ .bind = sandbox_bootmeth_bind,
+};
--
2.35.1.616.g0bdcbb4464-goog