msm: pil: Implement tzapps support as a platform driver
Create a platform driver to manage the tzapps support instead of
having a module that exists for any 8660 device. This allows us
to add platform devices when the configuration actually supports
it and have pil_get() fail otherwise.
Change-Id: I22707d8947ef360522edb1cd9ee6792cbd8fe797
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/arch/arm/mach-msm/pil-tzapps.c b/arch/arm/mach-msm/pil-tzapps.c
new file mode 100644
index 0000000..90ac1d9
--- /dev/null
+++ b/arch/arm/mach-msm/pil-tzapps.c
@@ -0,0 +1,96 @@
+/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/elf.h>
+#include <linux/err.h>
+
+#include "peripheral-loader.h"
+#include "scm-pas.h"
+
+static int nop_verify_blob(struct pil_desc *pil, u32 phy_addr, size_t size)
+{
+ return 0;
+}
+
+static int pil_tzapps_init_image(struct pil_desc *pil, const u8 *metadata,
+ size_t size)
+{
+ return pas_init_image(PAS_TZAPPS, metadata, size);
+}
+
+static int pil_tzapps_reset(struct pil_desc *pil)
+{
+ return pas_auth_and_reset(PAS_TZAPPS);
+}
+
+static int pil_tzapps_shutdown(struct pil_desc *pil)
+{
+ return pas_shutdown(PAS_TZAPPS);
+}
+
+static struct pil_reset_ops pil_tzapps_ops = {
+ .init_image = pil_tzapps_init_image,
+ .verify_blob = nop_verify_blob,
+ .auth_and_reset = pil_tzapps_reset,
+ .shutdown = pil_tzapps_shutdown,
+};
+
+static int __devinit pil_tzapps_driver_probe(struct platform_device *pdev)
+{
+ struct pil_desc *desc;
+
+ if (pas_supported(PAS_TZAPPS) < 0)
+ return -ENOSYS;
+
+ desc = devm_kzalloc(&pdev->dev, sizeof(*desc), GFP_KERNEL);
+ if (!desc)
+ return -ENOMEM;
+
+ desc->name = "tzapps";
+ desc->dev = &pdev->dev;
+ desc->ops = &pil_tzapps_ops;
+ if (msm_pil_register(desc))
+ return -EINVAL;
+ return 0;
+}
+
+static int __devexit pil_tzapps_driver_exit(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct platform_driver pil_tzapps_driver = {
+ .probe = pil_tzapps_driver_probe,
+ .remove = __devexit_p(pil_tzapps_driver_exit),
+ .driver = {
+ .name = "pil_tzapps",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init pil_tzapps_init(void)
+{
+ return platform_driver_register(&pil_tzapps_driver);
+}
+module_init(pil_tzapps_init);
+
+static void __exit pil_tzapps_exit(void)
+{
+ platform_driver_unregister(&pil_tzapps_driver);
+}
+module_exit(pil_tzapps_exit);
+
+MODULE_DESCRIPTION("Support for booting TZApps images");
+MODULE_LICENSE("GPL v2");